emacs/test/automated/python-tests.el

;;; python-tests.el --- Test suite for python.el

;; Copyright (C) 2013 Free Software Foundation, Inc.

;; This file is part of GNU Emacs.

;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:

;;; Code:

(require 'python)

(defmacro python-tests-with-temp-buffer (contents &rest body)
  "Create a `python-mode' enabeld temp buffer with CONTENTS.
BODY is code to be executed within the temp buffer.  Point is
always located at the beginning of buffer."
  (declare (indent 1) (debug t))
  `(with-temp-buffer
     (python-mode)
     (insert ,contents)
     (goto-char (point-min))
     ,@body))

(defun python-tests-look-at (string &optional num restore-point)
  "Move point at beginning of STRING in the current buffer.
Optional argument NUM defaults to 1 and is an integer indicating
how many ocurrences must be found, when positive the search is
done forwards, otherwise backwards.  When RESTORE-POINT is
non-nil the point is not moved but the position found is still
returned.  When searching forward and point is already looking at
STRING, it is skipped so the next STRING occurrence is selected."
  (let* ((num (or num 1))
         (starting-point (point))
         (string (regexp-quote string))
         (search-fn (if (> num 0) #'re-search-forward #'re-search-backward))
         (deinc-fn (if (> num 0) #'1- #'1+))
         (found-point))
    (prog2
        (catch 'exit
          (while (not (= num 0))
            (when (and (> num 0)
                       (looking-at string))
              ;; Moving forward and already looking at STRING, skip it.
              (forward-char (length (match-string-no-properties 0))))
            (and (not (funcall search-fn string nil t))
                 (throw 'exit t))
            (when (> num 0)
              ;; `re-search-forward' leaves point at the end of the
              ;; occurrence, move back so point is at the beginning
              ;; instead.
              (forward-char (- (length (match-string-no-properties 0)))))
            (setq
             num (funcall deinc-fn num)
             found-point (point))))
        found-point
      (and restore-point (goto-char starting-point)))))


;;; Tests for your tests, so you can test while you test.

(ert-deftest python-tests-look-at-1 ()
  "Test forward movement."
  (python-tests-with-temp-buffer
   "Lorem ipsum dolor sit amet, consectetur adipisicing elit,
sed do eiusmod tempor incididunt ut labore et dolore magna
aliqua."
   (let ((expected (save-excursion
                     (dotimes (i 3)
                       (re-search-forward "et" nil t))
                     (forward-char -2)
                     (point))))
     (should (= (python-tests-look-at "et" 3 t) expected))
     ;; Even if NUM is bigger than found occurrences the point of last
     ;; one should be returned.
     (should (= (python-tests-look-at "et" 6 t) expected))
     ;; If already looking at STRING, it should skip it.
     (dotimes (i 2) (re-search-forward "et"))
     (forward-char -2)
     (should (= (python-tests-look-at "et") expected)))))

(ert-deftest python-tests-look-at-2 ()
  "Test backward movement."
  (python-tests-with-temp-buffer
   "Lorem ipsum dolor sit amet, consectetur adipisicing elit,
sed do eiusmod tempor incididunt ut labore et dolore magna
aliqua."
   (let ((expected
          (save-excursion
            (re-search-forward "et" nil t)
            (forward-char -2)
            (point))))
     (dotimes (i 3)
       (re-search-forward "et" nil t))
     (should (= (python-tests-look-at "et" -3 t) expected))
     (should (= (python-tests-look-at "et" -6 t) expected)))))


;;; Bindings


;;; Python specialized rx


;;; Font-lock and syntax


;;; Indentation

;; See: http://www.python.org/dev/peps/pep-0008/#indentation

(ert-deftest python-indent-pep8-1 ()
  "First pep8 case."
  (python-tests-with-temp-buffer
   "# Aligned with opening delimiter
foo = long_function_name(var_one, var_two,
                         var_three, var_four)
"
   (should (eq (car (python-indent-context)) 'no-indent))
   (should (= (python-indent-calculate-indentation) 0))
   (python-tests-look-at "foo = long_function_name(var_one, var_two,")
   (should (eq (car (python-indent-context)) 'after-line))
   (should (= (python-indent-calculate-indentation) 0))
   (python-tests-look-at "var_three, var_four)")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 25))))

(ert-deftest python-indent-pep8-2 ()
  "Second pep8 case."
  (python-tests-with-temp-buffer
   "# More indentation included to distinguish this from the rest.
def long_function_name(
        var_one, var_two, var_three,
        var_four):
    print (var_one)
"
   (should (eq (car (python-indent-context)) 'no-indent))
   (should (= (python-indent-calculate-indentation) 0))
   (python-tests-look-at "def long_function_name(")
   (should (eq (car (python-indent-context)) 'after-line))
   (should (= (python-indent-calculate-indentation) 0))
   (python-tests-look-at "var_one, var_two, var_three,")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 8))
   (python-tests-look-at "var_four):")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 8))
   (python-tests-look-at "print (var_one)")
   (should (eq (car (python-indent-context)) 'after-beginning-of-block))
   (should (= (python-indent-calculate-indentation) 4))))

(ert-deftest python-indent-pep8-3 ()
  "Third pep8 case."
  (python-tests-with-temp-buffer
   "# Extra indentation is not necessary.
foo = long_function_name(
  var_one, var_two,
  var_three, var_four)
"
   (should (eq (car (python-indent-context)) 'no-indent))
   (should (= (python-indent-calculate-indentation) 0))
   (python-tests-look-at "foo = long_function_name(")
   (should (eq (car (python-indent-context)) 'after-line))
   (should (= (python-indent-calculate-indentation) 0))
   (python-tests-look-at "var_one, var_two,")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 4))
   (python-tests-look-at "var_three, var_four)")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 4))))

(ert-deftest python-indent-inside-paren-1 ()
  "The most simple inside-paren case that shouldn't fail."
  (python-tests-with-temp-buffer
   "
data = {
    'key':
    {
        'objlist': [
            {
                'pk': 1,
                'name': 'first',
            },
            {
                'pk': 2,
                'name': 'second',
            }
        ]
    }
}
"
   (python-tests-look-at "data = {")
   (should (eq (car (python-indent-context)) 'after-line))
   (should (= (python-indent-calculate-indentation) 0))
   (python-tests-look-at "'key':")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 4))
   (python-tests-look-at "{")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 4))
   (python-tests-look-at "'objlist': [")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 8))
   (python-tests-look-at "{")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 12))
   (python-tests-look-at "'pk': 1,")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 16))
   (python-tests-look-at "'name': 'first',")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 16))
   (python-tests-look-at "},")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 12))
   (python-tests-look-at "{")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 12))
   (python-tests-look-at "'pk': 2,")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 16))
   (python-tests-look-at "'name': 'second',")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 16))
   (python-tests-look-at "}")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 12))
   (python-tests-look-at "]")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 8))
   (python-tests-look-at "}")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 4))
   (python-tests-look-at "}")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 0))))

(ert-deftest python-indent-inside-paren-2 ()
  "Another more compact paren group style."
  (python-tests-with-temp-buffer
   "
data = {'key': {
    'objlist': [
        {'pk': 1,
         'name': 'first'},
        {'pk': 2,
         'name': 'second'}
    ]
}}
"
   (python-tests-look-at "data = {")
   (should (eq (car (python-indent-context)) 'after-line))
   (should (= (python-indent-calculate-indentation) 0))
   (python-tests-look-at "'objlist': [")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 4))
   (python-tests-look-at "{'pk': 1,")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 8))
   (python-tests-look-at "'name': 'first'},")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 9))
   (python-tests-look-at "{'pk': 2,")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 8))
   (python-tests-look-at "'name': 'second'}")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 9))
   (python-tests-look-at "]")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 4))
   (python-tests-look-at "}}")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 0))
   (python-tests-look-at "}")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 0))))

(ert-deftest python-indent-after-block-1 ()
  "The most simple after-block case that shouldn't fail."
  (python-tests-with-temp-buffer
   "
def foo(a, b, c=True):
"
   (should (eq (car (python-indent-context)) 'no-indent))
   (should (= (python-indent-calculate-indentation) 0))
   (goto-char (point-max))
   (should (eq (car (python-indent-context)) 'after-beginning-of-block))
   (should (= (python-indent-calculate-indentation) 4))))

(ert-deftest python-indent-after-block-2 ()
  "A weird (malformed) multiline block statement."
  (python-tests-with-temp-buffer
   "
def foo(a, b, c={
    'a':
}):
"
   (goto-char (point-max))
   (should (eq (car (python-indent-context)) 'after-beginning-of-block))
   (should (= (python-indent-calculate-indentation) 4))))

(ert-deftest python-indent-dedenters-1 ()
  "Check all dedenters."
  (python-tests-with-temp-buffer
   "
def foo(a, b, c):
    if a:
        print (a)
    elif b:
        print (b)
    else:
        try:
            print (c.pop())
        except (IndexError, AttributeError):
            print (c)
        finally:
            print ('nor a, nor b are true')
"
   (python-tests-look-at "if a:")
   (should (eq (car (python-indent-context)) 'after-beginning-of-block))
   (should (= (python-indent-calculate-indentation) 4))
   (python-tests-look-at "print (a)")
   (should (eq (car (python-indent-context)) 'after-beginning-of-block))
   (should (= (python-indent-calculate-indentation) 8))
   (python-tests-look-at "elif b:")
   (should (eq (car (python-indent-context)) 'after-line))
   (should (= (python-indent-calculate-indentation) 4))
   (python-tests-look-at "print (b)")
   (should (eq (car (python-indent-context)) 'after-beginning-of-block))
   (should (= (python-indent-calculate-indentation) 8))
   (python-tests-look-at "else:")
   (should (eq (car (python-indent-context)) 'after-line))
   (should (= (python-indent-calculate-indentation) 4))
   (python-tests-look-at "try:")
   (should (eq (car (python-indent-context)) 'after-beginning-of-block))
   (should (= (python-indent-calculate-indentation) 8))
   (python-tests-look-at "print (c.pop())")
   (should (eq (car (python-indent-context)) 'after-beginning-of-block))
   (should (= (python-indent-calculate-indentation) 12))
   (python-tests-look-at "except (IndexError, AttributeError):")
   (should (eq (car (python-indent-context)) 'after-line))
   (should (= (python-indent-calculate-indentation) 8))
   (python-tests-look-at "print (c)")
   (should (eq (car (python-indent-context)) 'after-beginning-of-block))
   (should (= (python-indent-calculate-indentation) 12))
   (python-tests-look-at "finally:")
   (should (eq (car (python-indent-context)) 'after-line))
   (should (= (python-indent-calculate-indentation) 8))
   (python-tests-look-at "print ('nor a, nor b are true')")
   (should (eq (car (python-indent-context)) 'after-beginning-of-block))
   (should (= (python-indent-calculate-indentation) 12))))

(ert-deftest python-indent-after-backslash-1 ()
  "The most common case."
  (python-tests-with-temp-buffer
   "
from foo.bar.baz import something, something_1 \\\\
    something_2 something_3, \\\\
    something_4, something_5
"
   (python-tests-look-at "from foo.bar.baz import something, something_1")
   (should (eq (car (python-indent-context)) 'after-line))
   (should (= (python-indent-calculate-indentation) 0))
   (python-tests-look-at "something_2 something_3,")
   (should (eq (car (python-indent-context)) 'after-backslash))
   (should (= (python-indent-calculate-indentation) 4))
   (python-tests-look-at "something_4, something_5")
   (should (eq (car (python-indent-context)) 'after-backslash))
   (should (= (python-indent-calculate-indentation) 4))
   (goto-char (point-max))
   (should (eq (car (python-indent-context)) 'after-line))
   (should (= (python-indent-calculate-indentation) 0))))

(ert-deftest python-indent-after-backslash-2 ()
  "A pretty extreme complicated case."
  (python-tests-with-temp-buffer
   "
objects = Thing.objects.all() \\\\
                       .filter(
                           type='toy',
                           status='bought'
                       ) \\\\
                       .aggregate(
                           Sum('amount')
                       ) \\\\
                       .values_list()
"
   (python-tests-look-at "objects = Thing.objects.all()")
   (should (eq (car (python-indent-context)) 'after-line))
   (should (= (python-indent-calculate-indentation) 0))
   (python-tests-look-at ".filter(")
   (should (eq (car (python-indent-context)) 'after-backslash))
   (should (= (python-indent-calculate-indentation) 23))
   (python-tests-look-at "type='toy',")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 27))
   (python-tests-look-at "status='bought'")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 27))
   (python-tests-look-at ") \\\\")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 23))
   (python-tests-look-at ".aggregate(")
   (should (eq (car (python-indent-context)) 'after-backslash))
   (should (= (python-indent-calculate-indentation) 23))
   (python-tests-look-at "Sum('amount')")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 27))
   (python-tests-look-at ") \\\\")
   (should (eq (car (python-indent-context)) 'inside-paren))
   (should (= (python-indent-calculate-indentation) 23))
   (python-tests-look-at ".values_list()")
   (should (eq (car (python-indent-context)) 'after-backslash))
   (should (= (python-indent-calculate-indentation) 23))
   (forward-line 1)
   (should (eq (car (python-indent-context)) 'after-line))
   (should (= (python-indent-calculate-indentation) 0))))


;;; Navigation

(ert-deftest python-nav-beginning-of-defun-1 ()
  (python-tests-with-temp-buffer
   "
def decoratorFunctionWithArguments(arg1, arg2, arg3):
    '''print decorated function call data to stdout.

    Usage:

    @decoratorFunctionWithArguments('arg1', 'arg2')
    def func(a, b, c=True):
        pass
    '''

    def wwrap(f):
        print 'Inside wwrap()'
        def wrapped_f(*args):
            print 'Inside wrapped_f()'
            print 'Decorator arguments:', arg1, arg2, arg3
            f(*args)
            print 'After f(*args)'
        return wrapped_f
    return wwrap
"
   (python-tests-look-at "return wrap")
   (should (= (save-excursion
                (python-nav-beginning-of-defun)
                (point))
              (save-excursion
                (python-tests-look-at "def wrapped_f(*args):" -1)
                (beginning-of-line)
                (point))))
   (python-tests-look-at "def wrapped_f(*args):" -1)
   (should (= (save-excursion
                (python-nav-beginning-of-defun)
                (point))
              (save-excursion
                (python-tests-look-at "def wwrap(f):" -1)
                (beginning-of-line)
                (point))))
   (python-tests-look-at "def wwrap(f):" -1)
   (should (= (save-excursion
                (python-nav-beginning-of-defun)
                (point))
              (save-excursion
                (python-tests-look-at "def decoratorFunctionWithArguments" -1)
                (beginning-of-line)
                (point))))))

(ert-deftest python-nav-beginning-of-defun-2 ()
  (python-tests-with-temp-buffer
   "
class C(object):

    def m(self):
        self.c()

        def b():
            pass

        def a():
            pass

    def c(self):
        pass
"
   ;; Nested defuns, are handled with care.
   (python-tests-look-at "def c(self):")
   (should (= (save-excursion
                (python-nav-beginning-of-defun)
                (point))
              (save-excursion
                (python-tests-look-at "def m(self):" -1)
                (beginning-of-line)
                (point))))
   ;; Defuns on same levels should be respected.
   (python-tests-look-at "def a():" -1)
   (should (= (save-excursion
                (python-nav-beginning-of-defun)
                (point))
              (save-excursion
                (python-tests-look-at "def b():" -1)
                (beginning-of-line)
                (point))))
   ;; Jump to a top level defun.
   (python-tests-look-at "def b():" -1)
   (should (= (save-excursion
                (python-nav-beginning-of-defun)
                (point))
              (save-excursion
                (python-tests-look-at "def m(self):" -1)
                (beginning-of-line)
                (point))))
   ;; Jump to a top level defun again.
   (python-tests-look-at "def m(self):" -1)
   (should (= (save-excursion
                (python-nav-beginning-of-defun)
                (point))
              (save-excursion
                (python-tests-look-at "class C(object):" -1)
                (beginning-of-line)
                (point))))))

(ert-deftest python-nav-end-of-defun-1 ()
  (python-tests-with-temp-buffer
   "
class C(object):

    def m(self):
        self.c()

        def b():
            pass

        def a():
            pass

    def c(self):
        pass
"
   (should (= (save-excursion
                (python-tests-look-at "class C(object):")
                (python-nav-end-of-defun)
                (point))
              (save-excursion
                (point-max))))
   (should (= (save-excursion
                (python-tests-look-at "def m(self):")
                (python-nav-end-of-defun)
                (point))
              (save-excursion
                (python-tests-look-at "def c(self):")
                (forward-line -1)
                (point))))
   (should (= (save-excursion
                (python-tests-look-at "def b():")
                (python-nav-end-of-defun)
                (point))
              (save-excursion
                (python-tests-look-at "def b():")
                (forward-line 2)
                (point))))
   (should (= (save-excursion
                (python-tests-look-at "def c(self):")
                (python-nav-end-of-defun)
                (point))
              (save-excursion
                (point-max))))))

(ert-deftest python-nav-end-of-defun-2 ()
  (python-tests-with-temp-buffer
   "
def decoratorFunctionWithArguments(arg1, arg2, arg3):
    '''print decorated function call data to stdout.

    Usage:

    @decoratorFunctionWithArguments('arg1', 'arg2')
    def func(a, b, c=True):
        pass
    '''

    def wwrap(f):
        print 'Inside wwrap()'
        def wrapped_f(*args):
            print 'Inside wrapped_f()'
            print 'Decorator arguments:', arg1, arg2, arg3
            f(*args)
            print 'After f(*args)'
        return wrapped_f
    return wwrap
"
   (should (= (save-excursion
                (python-tests-look-at "def decoratorFunctionWithArguments")
                (python-nav-end-of-defun)
                (point))
              (save-excursion
                (point-max))))
   (should (= (save-excursion
                (python-tests-look-at "@decoratorFunctionWithArguments")
                (python-nav-end-of-defun)
                (point))
              (save-excursion
                (point-max))))
   (should (= (save-excursion
                (python-tests-look-at "def wwrap(f):")
                (python-nav-end-of-defun)
                (point))
              (save-excursion
                (python-tests-look-at "return wwrap")
                (line-beginning-position))))
   (should (= (save-excursion
                (python-tests-look-at "def wrapped_f(*args):")
                (python-nav-end-of-defun)
                (point))
              (save-excursion
                (python-tests-look-at "return wrapped_f")
                (line-beginning-position))))
   (should (= (save-excursion
                (python-tests-look-at "f(*args)")
                (python-nav-end-of-defun)
                (point))
              (save-excursion
                (python-tests-look-at "return wrapped_f")
                (line-beginning-position))))))


(ert-deftest python-nav-beginning-of-statement-1 ()
  (python-tests-with-temp-buffer
   "
v1 = 123 + \
     456 + \
     789
v2 = (value1,
      value2,

      value3,
      value4)
v3 = ('this is a string'

      'that is continued'
      'between lines'
      'within a paren',
      # this is a comment, yo
      'continue previous line')
v4 = '''
a very long
string
'''
"
   (python-tests-look-at "v2 =")
   (python-util-forward-comment -1)
   (should (= (save-excursion
                (python-nav-beginning-of-statement)
                (point))
              (python-tests-look-at "v1 =" -1 t)))
   (python-tests-look-at "v3 =")
   (python-util-forward-comment -1)
   (should (= (save-excursion
                (python-nav-beginning-of-statement)
                (point))
              (python-tests-look-at "v2 =" -1 t)))
   (python-tests-look-at "v4 =")
   (python-util-forward-comment -1)
   (should (= (save-excursion
                (python-nav-beginning-of-statement)
                (point))
              (python-tests-look-at "v3 =" -1 t)))
   (goto-char (point-max))
   (python-util-forward-comment -1)
   (should (= (save-excursion
                (python-nav-beginning-of-statement)
                (point))
              (python-tests-look-at "v4 =" -1 t)))))

(ert-deftest python-nav-end-of-statement-1 ()
  (python-tests-with-temp-buffer
   "
v1 = 123 + \
     456 + \
     789
v2 = (value1,
      value2,

      value3,
      value4)
v3 = ('this is a string'

      'that is continued'
      'between lines'
      'within a paren',
      # this is a comment, yo
      'continue previous line')
v4 = '''
a very long
string
'''
"
   (python-tests-look-at "v1 =")
   (should (= (save-excursion
                (python-nav-end-of-statement)
                (point))
              (save-excursion
                (python-tests-look-at "789")
                (line-end-position))))
   (python-tests-look-at "v2 =")
   (should (= (save-excursion
                (python-nav-end-of-statement)
                (point))
              (save-excursion
                (python-tests-look-at "value4)")
                (line-end-position))))
   (python-tests-look-at "v3 =")
   (should (= (save-excursion
                (python-nav-end-of-statement)
                (point))
              (save-excursion
                (python-tests-look-at
                 "'continue previous line')")
                (line-end-position))))
   (python-tests-look-at "v4 =")
   (should (= (save-excursion
                (python-nav-end-of-statement)
                (point))
              (save-excursion
                (goto-char (point-max))
                (python-util-forward-comment -1)
                (point))))))

(ert-deftest python-nav-forward-statement-1 ()
  (python-tests-with-temp-buffer
   "
v1 = 123 + \
     456 + \
     789
v2 = (value1,
      value2,

      value3,
      value4)
v3 = ('this is a string'

      'that is continued'
      'between lines'
      'within a paren',
      # this is a comment, yo
      'continue previous line')
v4 = '''
a very long
string
'''
"
   (python-tests-look-at "v1 =")
   (should (= (save-excursion
                (python-nav-forward-statement)
                (point))
              (python-tests-look-at "v2 =")))
   (should (= (save-excursion
                (python-nav-forward-statement)
                (point))
              (python-tests-look-at "v3 =")))
   (should (= (save-excursion
                (python-nav-forward-statement)
                (point))
              (python-tests-look-at "v4 =")))
   (should (= (save-excursion
                (python-nav-forward-statement)
                (point))
              (point-max)))))

(ert-deftest python-nav-backward-statement-1 ()
  (python-tests-with-temp-buffer
   "
v1 = 123 + \
     456 + \
     789
v2 = (value1,
      value2,

      value3,
      value4)
v3 = ('this is a string'

      'that is continued'
      'between lines'
      'within a paren',
      # this is a comment, yo
      'continue previous line')
v4 = '''
a very long
string
'''
"
   (goto-char (point-max))
   (should (= (save-excursion
                (python-nav-backward-statement)
                (point))
              (python-tests-look-at "v4 =" -1)))
   (should (= (save-excursion
                (python-nav-backward-statement)
                (point))
              (python-tests-look-at "v3 =" -1)))
   (should (= (save-excursion
                (python-nav-backward-statement)
                (point))
              (python-tests-look-at "v2 =" -1)))
   (should (= (save-excursion
                (python-nav-backward-statement)
                (point))
              (python-tests-look-at "v1 =" -1)))))

(ert-deftest python-nav-backward-statement-2 ()
  :expected-result :failed
  (python-tests-with-temp-buffer
   "
v1 = 123 + \
     456 + \
     789
v2 = (value1,
      value2,

      value3,
      value4)
"
   ;; FIXME: For some reason `python-nav-backward-statement' is moving
   ;; back two sentences when starting from 'value4)'.
   (goto-char (point-max))
   (python-util-forward-comment -1)
   (should (= (save-excursion
                (python-nav-backward-statement)
                (point))
              (python-tests-look-at "v2 =" -1 t)))))

(ert-deftest python-nav-beginning-of-block-1 ()
  (python-tests-with-temp-buffer
   "
def decoratorFunctionWithArguments(arg1, arg2, arg3):
    '''print decorated function call data to stdout.

    Usage:

    @decoratorFunctionWithArguments('arg1', 'arg2')
    def func(a, b, c=True):
        pass
    '''

    def wwrap(f):
        print 'Inside wwrap()'
        def wrapped_f(*args):
            print 'Inside wrapped_f()'
            print 'Decorator arguments:', arg1, arg2, arg3
            f(*args)
            print 'After f(*args)'
        return wrapped_f
    return wwrap
"
   (python-tests-look-at "return wwrap")
   (should (= (save-excursion
                (python-nav-beginning-of-block)
                (point))
              (python-tests-look-at "def decoratorFunctionWithArguments" -1)))
   (python-tests-look-at "print 'Inside wwrap()'")
   (should (= (save-excursion
                (python-nav-beginning-of-block)
                (point))
              (python-tests-look-at "def wwrap(f):" -1)))
   (python-tests-look-at "print 'After f(*args)'")
   (end-of-line)
   (should (= (save-excursion
                (python-nav-beginning-of-block)
                (point))
              (python-tests-look-at "def wrapped_f(*args):" -1)))
   (python-tests-look-at "return wrapped_f")
   (should (= (save-excursion
                (python-nav-beginning-of-block)
                (point))
              (python-tests-look-at "def wwrap(f):" -1)))))

(ert-deftest python-nav-end-of-block-1 ()
  (python-tests-with-temp-buffer
   "
def decoratorFunctionWithArguments(arg1, arg2, arg3):
    '''print decorated function call data to stdout.

    Usage:

    @decoratorFunctionWithArguments('arg1', 'arg2')
    def func(a, b, c=True):
        pass
    '''

    def wwrap(f):
        print 'Inside wwrap()'
        def wrapped_f(*args):
            print 'Inside wrapped_f()'
            print 'Decorator arguments:', arg1, arg2, arg3
            f(*args)
            print 'After f(*args)'
        return wrapped_f
    return wwrap
"
   (python-tests-look-at "def decoratorFunctionWithArguments")
   (should (= (save-excursion
                (python-nav-end-of-block)
                (point))
              (save-excursion
                (goto-char (point-max))
                (python-util-forward-comment -1)
                (point))))
   (python-tests-look-at "def wwrap(f):")
   (should (= (save-excursion
                (python-nav-end-of-block)
                (point))
              (save-excursion
                (python-tests-look-at "return wrapped_f")
                (line-end-position))))
   (end-of-line)
   (should (= (save-excursion
                (python-nav-end-of-block)
                (point))
              (save-excursion
                (python-tests-look-at "return wrapped_f")
                (line-end-position))))
   (python-tests-look-at "f(*args)")
   (should (= (save-excursion
                (python-nav-end-of-block)
                (point))
              (save-excursion
                (python-tests-look-at "print 'After f(*args)'")
                (line-end-position))))))

(ert-deftest python-nav-forward-block-1 ()
  "This also accounts as a test for `python-nav-backward-block'."
  (python-tests-with-temp-buffer
   "
if request.user.is_authenticated():
    # def block():
    #     pass
    try:
        profile = request.user.get_profile()
    except Profile.DoesNotExist:
        profile = Profile.objects.create(user=request.user)
    else:
        if profile.stats:
            profile.recalculate_stats()
        else:
            profile.clear_stats()
    finally:
        profile.views += 1
        profile.save()
"
   (should (= (save-excursion (python-nav-forward-block))
              (python-tests-look-at "if request.user.is_authenticated():")))
   (should (= (save-excursion (python-nav-forward-block))
              (python-tests-look-at "try:")))
   (should (= (save-excursion (python-nav-forward-block))
              (python-tests-look-at "except Profile.DoesNotExist:")))
   (should (= (save-excursion (python-nav-forward-block))
              (python-tests-look-at "else:")))
   (should (= (save-excursion (python-nav-forward-block))
              (python-tests-look-at "if profile.stats:")))
   (should (= (save-excursion (python-nav-forward-block))
              (python-tests-look-at "else:")))
   (should (= (save-excursion (python-nav-forward-block))
              (python-tests-look-at "finally:")))
   ;; When point is at the last block, leave it there and return nil
   (should (not (save-excursion (python-nav-forward-block))))
   ;; Move backwards, and even if the number of moves is less than the
   ;; provided argument return the point.
   (should (= (save-excursion (python-nav-forward-block -10))
              (python-tests-look-at
               "if request.user.is_authenticated():" -1)))))

(ert-deftest python-nav-lisp-forward-sexp-safe-1 ()
  (python-tests-with-temp-buffer
   "
profile = Profile.objects.create(user=request.user)
profile.notify()
"
   (python-tests-look-at "profile =")
   (python-nav-lisp-forward-sexp-safe 4)
   (should (looking-at "(user=request.user)"))
   (python-tests-look-at "user=request.user")
   (python-nav-lisp-forward-sexp-safe -1)
   (should (looking-at "(user=request.user)"))
   (python-nav-lisp-forward-sexp-safe -4)
   (should (looking-at "profile ="))
   (python-tests-look-at "user=request.user")
   (python-nav-lisp-forward-sexp-safe 3)
   (should (looking-at ")"))
   (python-nav-lisp-forward-sexp-safe 1)
   (should (looking-at "$"))
   (python-nav-lisp-forward-sexp-safe 1)
   (should (looking-at ".notify()"))))

(ert-deftest python-nav-forward-sexp-1 ()
  (python-tests-with-temp-buffer
   "
a()
b()
c()
"
   (python-tests-look-at "a()")
   (python-nav-forward-sexp)
   (should (looking-at "$"))
   (should (save-excursion
             (beginning-of-line)
             (looking-at "a()")))
   (python-nav-forward-sexp)
   (should (looking-at "$"))
   (should (save-excursion
             (beginning-of-line)
             (looking-at "b()")))
   (python-nav-forward-sexp)
   (should (looking-at "$"))
   (should (save-excursion
             (beginning-of-line)
             (looking-at "c()")))
   ;; Movement next to a paren should do what lisp does and
   ;; unfortunately It can't change, because otherwise
   ;; `blink-matching-open' breaks.
   (python-nav-forward-sexp -1)
   (should (looking-at "()"))
   (should (save-excursion
             (beginning-of-line)
             (looking-at "c()")))
   (python-nav-forward-sexp -1)
   (should (looking-at "c()"))
   (python-nav-forward-sexp -1)
   (should (looking-at "b()"))
   (python-nav-forward-sexp -1)
   (should (looking-at "a()"))))

(ert-deftest python-nav-forward-sexp-2 ()
  (python-tests-with-temp-buffer
   "
def func():
    if True:
        aaa = bbb
        ccc = ddd
        eee = fff
    return ggg
"
   (python-tests-look-at "aa =")
   (python-nav-forward-sexp)
   (should (looking-at " = bbb"))
   (python-nav-forward-sexp)
   (should (looking-at "$"))
   (should (save-excursion
             (back-to-indentation)
             (looking-at "aaa = bbb")))
   (python-nav-forward-sexp)
   (should (looking-at "$"))
   (should (save-excursion
             (back-to-indentation)
             (looking-at "ccc = ddd")))
   (python-nav-forward-sexp)
   (should (looking-at "$"))
   (should (save-excursion
             (back-to-indentation)
             (looking-at "eee = fff")))
   (python-nav-forward-sexp)
   (should (looking-at "$"))
   (should (save-excursion
             (back-to-indentation)
             (looking-at "return ggg")))
   (python-nav-forward-sexp -1)
   (should (looking-at "def func():"))))

(ert-deftest python-nav-forward-sexp-3 ()
  (python-tests-with-temp-buffer
   "
from some_module import some_sub_module
from another_module import another_sub_module

def another_statement():
    pass
"
   (python-tests-look-at "some_module")
   (python-nav-forward-sexp)
   (should (looking-at " import"))
   (python-nav-forward-sexp)
   (should (looking-at " some_sub_module"))
   (python-nav-forward-sexp)
   (should (looking-at "$"))
   (should
    (save-excursion
      (back-to-indentation)
      (looking-at
       "from some_module import some_sub_module")))
   (python-nav-forward-sexp)
   (should (looking-at "$"))
   (should
    (save-excursion
      (back-to-indentation)
      (looking-at
       "from another_module import another_sub_module")))
   (python-nav-forward-sexp)
   (should (looking-at "$"))
   (should
    (save-excursion
      (back-to-indentation)
      (looking-at
       "pass")))
   (python-nav-forward-sexp -1)
   (should (looking-at "def another_statement():"))
   (python-nav-forward-sexp -1)
   (should (looking-at "from another_module import another_sub_module"))
   (python-nav-forward-sexp -1)
   (should (looking-at "from some_module import some_sub_module"))))

(ert-deftest python-nav-up-list-1 ()
  (python-tests-with-temp-buffer
   "
def f():
    if True:
        return [i for i in range(3)]
"
   (python-tests-look-at "3)]")
   (python-nav-up-list)
   (should (looking-at "]"))
   (python-nav-up-list)
   (should (looking-at "$"))))

(ert-deftest python-nav-backward-up-list-1 ()
  :expected-result :failed
  (python-tests-with-temp-buffer
   "
def f():
    if True:
        return [i for i in range(3)]
"
   (python-tests-look-at "3)]")
   (python-nav-backward-up-list)
   (should (looking-at "(3)\\]"))
   (python-nav-backward-up-list)
   (should (looking-at
            "\\[i for i in range(3)\\]"))
   ;; FIXME: Need to move to beginning-of-statement.
   (python-nav-backward-up-list)
   (should (looking-at
            "return \\[i for i in range(3)\\]"))
   (python-nav-backward-up-list)
   (should (looking-at "if True:"))
   (python-nav-backward-up-list)
   (should (looking-at "def f():"))))


;;; Shell integration


;;; Shell completion


;;; PDB Track integration


;;; Symbol completion


;;; Fill paragraph


;;; Skeletons


;;; FFAP


;;; Code check


;;; Eldoc


;;; Imenu
(ert-deftest python-imenu-prev-index-position-1 ()
  (require 'imenu)
  (python-tests-with-temp-buffer
   "
def decoratorFunctionWithArguments(arg1, arg2, arg3):
    '''print decorated function call data to stdout.

    Usage:

    @decoratorFunctionWithArguments('arg1', 'arg2')
    def func(a, b, c=True):
        pass
    '''

    def wwrap(f):
        print 'Inside wwrap()'
        def wrapped_f(*args):
            print 'Inside wrapped_f()'
            print 'Decorator arguments:', arg1, arg2, arg3
            f(*args)
            print 'After f(*args)'
        return wrapped_f
    return wwrap

def test(): # Some comment
    'This is a test function'
    print 'test'

class C(object):

    def m(self):
        self.c()

        def b():
            pass

        def a():
            pass

    def c(self):
        pass
"
   (let ((expected
          '(("*Rescan*" . -99)
            ("decoratorFunctionWithArguments" . 2)
            ("decoratorFunctionWithArguments.wwrap" . 224)
            ("decoratorFunctionWithArguments.wwrap.wrapped_f" . 273)
            ("test" . 500)
            ("C" . 575)
            ("C.m" . 593)
            ("C.m.b" . 628)
            ("C.m.a" . 663)
            ("C.c" . 698))))
     (mapc
      (lambda (elt)
        (should (= (cdr (assoc-string (car elt) expected))
                   (if (markerp (cdr elt))
                       (marker-position (cdr elt))
                     (cdr elt)))))
      (imenu--make-index-alist)))))


;;; Misc helpers

(ert-deftest python-info-current-defun-1 ()
  (python-tests-with-temp-buffer
   "
def foo(a, b):
"
   (forward-line 1)
   (should (string= "foo" (python-info-current-defun)))
   (should (string= "def foo" (python-info-current-defun t)))
   (forward-line 1)
   (should (not (python-info-current-defun)))
   (indent-for-tab-command)
   (should (string= "foo" (python-info-current-defun)))
   (should (string= "def foo" (python-info-current-defun t)))))

(ert-deftest python-info-current-defun-2 ()
  (python-tests-with-temp-buffer
   "
class C(object):

    def m(self):
        if True:
            return [i for i in range(3)]
        else:
            return []

        def b():
            pass

        def a():
            pass

    def c(self):
        pass
"
   (forward-line 1)
   (should (string= "C" (python-info-current-defun)))
   (should (string= "class C" (python-info-current-defun t)))
   (python-tests-look-at "return [i for ")
   (should (string= "C.m" (python-info-current-defun)))
   (should (string= "def C.m" (python-info-current-defun t)))
   (python-tests-look-at "def b():")
   (should (string= "C.m.b" (python-info-current-defun)))
   (should (string= "def C.m.b" (python-info-current-defun t)))
   (forward-line 2)
   (indent-for-tab-command)
   (python-indent-dedent-line-backspace 1)
   (should (string= "C.m" (python-info-current-defun)))
   (should (string= "def C.m" (python-info-current-defun t)))
   (python-tests-look-at "def c(self):")
   (forward-line -1)
   (indent-for-tab-command)
   (should (string= "C.m.a" (python-info-current-defun)))
   (should (string= "def C.m.a" (python-info-current-defun t)))
   (python-indent-dedent-line-backspace 1)
   (should (string= "C.m" (python-info-current-defun)))
   (should (string= "def C.m" (python-info-current-defun t)))
   (python-indent-dedent-line-backspace 1)
   (should (string= "C" (python-info-current-defun)))
   (should (string= "class C" (python-info-current-defun t)))
   (python-tests-look-at "def c(self):")
   (should (string= "C.c" (python-info-current-defun)))
   (should (string= "def C.c" (python-info-current-defun t)))
   (python-tests-look-at "pass")
   (should (string= "C.c" (python-info-current-defun)))
   (should (string= "def C.c" (python-info-current-defun t)))))

(ert-deftest python-info-current-defun-3 ()
  (python-tests-with-temp-buffer
   "
def decoratorFunctionWithArguments(arg1, arg2, arg3):
    '''print decorated function call data to stdout.

    Usage:

    @decoratorFunctionWithArguments('arg1', 'arg2')
    def func(a, b, c=True):
        pass
    '''

    def wwrap(f):
        print 'Inside wwrap()'
        def wrapped_f(*args):
            print 'Inside wrapped_f()'
            print 'Decorator arguments:', arg1, arg2, arg3
            f(*args)
            print 'After f(*args)'
        return wrapped_f
    return wwrap
"
   (python-tests-look-at "def wwrap(f):")
   (forward-line -1)
   (should (not (python-info-current-defun)))
   (indent-for-tab-command 1)
   (should (string= (python-info-current-defun)
                    "decoratorFunctionWithArguments"))
   (should (string= (python-info-current-defun t)
                    "def decoratorFunctionWithArguments"))
   (python-tests-look-at "def wrapped_f(*args):")
   (should (string= (python-info-current-defun)
                    "decoratorFunctionWithArguments.wwrap.wrapped_f"))
   (should (string= (python-info-current-defun t)
                    "def decoratorFunctionWithArguments.wwrap.wrapped_f"))
   (python-tests-look-at "return wrapped_f")
   (should (string= (python-info-current-defun)
                    "decoratorFunctionWithArguments.wwrap"))
   (should (string= (python-info-current-defun t)
                    "def decoratorFunctionWithArguments.wwrap"))
   (end-of-line 1)
   (python-tests-look-at "return wwrap")
   (should (string= (python-info-current-defun)
                    "decoratorFunctionWithArguments"))
   (should (string= (python-info-current-defun t)
                    "def decoratorFunctionWithArguments"))))

(ert-deftest python-info-current-symbol-1 ()
  (python-tests-with-temp-buffer
   "
class C(object):

    def m(self):
        self.c()

    def c(self):
        print ('a')
"
   (python-tests-look-at "self.c()")
   (should (string= "self.c" (python-info-current-symbol)))
   (should (string= "C.c" (python-info-current-symbol t)))))

(ert-deftest python-info-current-symbol-2 ()
  (python-tests-with-temp-buffer
   "
class C(object):

    class M(object):

        def a(self):
            self.c()

        def c(self):
            pass
"
   (python-tests-look-at "self.c()")
   (should (string= "self.c" (python-info-current-symbol)))
   (should (string= "C.M.c" (python-info-current-symbol t)))))

(ert-deftest python-info-current-symbol-3 ()
  "Keywords should not be considered symbols."
  :expected-result :failed
  (python-tests-with-temp-buffer
   "
class C(object):
    pass
"
   ;; FIXME: keywords are not symbols.
   (python-tests-look-at "class C")
   (should (not (python-info-current-symbol)))
   (should (not (python-info-current-symbol t)))
   (python-tests-look-at "C(object)")
   (should (string= "C" (python-info-current-symbol)))
   (should (string= "class C" (python-info-current-symbol t)))))

(ert-deftest python-info-statement-starts-block-p-1 ()
  (python-tests-with-temp-buffer
   "
def long_function_name(
        var_one, var_two, var_three,
        var_four):
    print (var_one)
"
   (python-tests-look-at "def long_function_name")
   (should (python-info-statement-starts-block-p))
   (python-tests-look-at "print (var_one)")
   (python-util-forward-comment -1)
   (should (python-info-statement-starts-block-p))))

(ert-deftest python-info-statement-starts-block-p-2 ()
  (python-tests-with-temp-buffer
   "
if width == 0 and height == 0 and \\\\
   color == 'red' and emphasis == 'strong' or \\\\
   highlight > 100:
    raise ValueError('sorry, you lose')
"
   (python-tests-look-at "if width == 0 and")
   (should (python-info-statement-starts-block-p))
   (python-tests-look-at "raise ValueError(")
   (python-util-forward-comment -1)
   (should (python-info-statement-starts-block-p))))

(ert-deftest python-info-statement-ends-block-p-1 ()
  (python-tests-with-temp-buffer
   "
def long_function_name(
        var_one, var_two, var_three,
        var_four):
    print (var_one)
"
   (python-tests-look-at "print (var_one)")
   (should (python-info-statement-ends-block-p))))

(ert-deftest python-info-statement-ends-block-p-2 ()
  (python-tests-with-temp-buffer
   "
if width == 0 and height == 0 and \\\\
   color == 'red' and emphasis == 'strong' or \\\\
   highlight > 100:
    raise ValueError(
'sorry, you lose'

)
"
   (python-tests-look-at "raise ValueError(")
   (should (python-info-statement-ends-block-p))))

(ert-deftest python-info-beginning-of-statement-p-1 ()
  (python-tests-with-temp-buffer
   "
def long_function_name(
        var_one, var_two, var_three,
        var_four):
    print (var_one)
"
   (python-tests-look-at "def long_function_name")
   (should (python-info-beginning-of-statement-p))
   (forward-char 10)
   (should (not (python-info-beginning-of-statement-p)))
   (python-tests-look-at "print (var_one)")
   (should (python-info-beginning-of-statement-p))
   (goto-char (line-beginning-position))
   (should (not (python-info-beginning-of-statement-p)))))

(ert-deftest python-info-beginning-of-statement-p-2 ()
  (python-tests-with-temp-buffer
   "
if width == 0 and height == 0 and \\\\
   color == 'red' and emphasis == 'strong' or \\\\
   highlight > 100:
    raise ValueError(
'sorry, you lose'

)
"
   (python-tests-look-at "if width == 0 and")
   (should (python-info-beginning-of-statement-p))
   (forward-char 10)
   (should (not (python-info-beginning-of-statement-p)))
   (python-tests-look-at "raise ValueError(")
   (should (python-info-beginning-of-statement-p))
   (goto-char (line-beginning-position))
   (should (not (python-info-beginning-of-statement-p)))))

(ert-deftest python-info-end-of-statement-p-1 ()
  (python-tests-with-temp-buffer
   "
def long_function_name(
        var_one, var_two, var_three,
        var_four):
    print (var_one)
"
   (python-tests-look-at "def long_function_name")
   (should (not (python-info-end-of-statement-p)))
   (end-of-line)
   (should (not (python-info-end-of-statement-p)))
   (python-tests-look-at "print (var_one)")
   (python-util-forward-comment -1)
   (should (python-info-end-of-statement-p))
   (python-tests-look-at "print (var_one)")
   (should (not (python-info-end-of-statement-p)))
   (end-of-line)
   (should (python-info-end-of-statement-p))))

(ert-deftest python-info-end-of-statement-p-2 ()
  (python-tests-with-temp-buffer
   "
if width == 0 and height == 0 and \\\\
   color == 'red' and emphasis == 'strong' or \\\\
   highlight > 100:
    raise ValueError(
'sorry, you lose'

)
"
   (python-tests-look-at "if width == 0 and")
   (should (not (python-info-end-of-statement-p)))
   (end-of-line)
   (should (not (python-info-end-of-statement-p)))
   (python-tests-look-at "raise ValueError(")
   (python-util-forward-comment -1)
   (should (python-info-end-of-statement-p))
   (python-tests-look-at "raise ValueError(")
   (should (not (python-info-end-of-statement-p)))
   (end-of-line)
   (should (not (python-info-end-of-statement-p)))
   (goto-char (point-max))
   (python-util-forward-comment -1)
   (should (python-info-end-of-statement-p))))

(ert-deftest python-info-beginning-of-block-p-1 ()
  (python-tests-with-temp-buffer
   "
def long_function_name(
        var_one, var_two, var_three,
        var_four):
    print (var_one)
"
   (python-tests-look-at "def long_function_name")
   (should (python-info-beginning-of-block-p))
   (python-tests-look-at "var_one, var_two, var_three,")
   (should (not (python-info-beginning-of-block-p)))
   (python-tests-look-at "print (var_one)")
   (should (not (python-info-beginning-of-block-p)))))

(ert-deftest python-info-beginning-of-block-p-2 ()
  (python-tests-with-temp-buffer
   "
if width == 0 and height == 0 and \\\\
   color == 'red' and emphasis == 'strong' or \\\\
   highlight > 100:
    raise ValueError(
'sorry, you lose'

)
"
   (python-tests-look-at "if width == 0 and")
   (should (python-info-beginning-of-block-p))
   (python-tests-look-at "color == 'red' and emphasis")
   (should (not (python-info-beginning-of-block-p)))
   (python-tests-look-at "raise ValueError(")
   (should (not (python-info-beginning-of-block-p)))))

(ert-deftest python-info-end-of-block-p-1 ()
  (python-tests-with-temp-buffer
   "
def long_function_name(
        var_one, var_two, var_three,
        var_four):
    print (var_one)
"
   (python-tests-look-at "def long_function_name")
   (should (not (python-info-end-of-block-p)))
   (python-tests-look-at "var_one, var_two, var_three,")
   (should (not (python-info-end-of-block-p)))
   (python-tests-look-at "var_four):")
   (end-of-line)
   (should (not (python-info-end-of-block-p)))
   (python-tests-look-at "print (var_one)")
   (should (not (python-info-end-of-block-p)))
   (end-of-line 1)
   (should (python-info-end-of-block-p))))

(ert-deftest python-info-end-of-block-p-2 ()
  (python-tests-with-temp-buffer
   "
if width == 0 and height == 0 and \\\\
   color == 'red' and emphasis == 'strong' or \\\\
   highlight > 100:
    raise ValueError(
'sorry, you lose'

)
"
   (python-tests-look-at "if width == 0 and")
   (should (not (python-info-end-of-block-p)))
   (python-tests-look-at "color == 'red' and emphasis == 'strong' or")
   (should (not (python-info-end-of-block-p)))
   (python-tests-look-at "highlight > 100:")
   (end-of-line)
   (should (not (python-info-end-of-block-p)))
   (python-tests-look-at "raise ValueError(")
   (should (not (python-info-end-of-block-p)))
   (end-of-line 1)
   (should (not (python-info-end-of-block-p)))
   (goto-char (point-max))
   (python-util-forward-comment -1)
   (should (python-info-end-of-block-p))))

(ert-deftest python-info-closing-block-1 ()
  (python-tests-with-temp-buffer
   "
if request.user.is_authenticated():
    try:
        profile = request.user.get_profile()
    except Profile.DoesNotExist:
        profile = Profile.objects.create(user=request.user)
    else:
        if profile.stats:
            profile.recalculate_stats()
        else:
            profile.clear_stats()
    finally:
        profile.views += 1
        profile.save()
"
   (python-tests-look-at "try:")
   (should (not (python-info-closing-block)))
   (python-tests-look-at "except Profile.DoesNotExist:")
   (should (= (python-tests-look-at "try:" -1 t)
              (python-info-closing-block)))
   (python-tests-look-at "else:")
   (should (= (python-tests-look-at "except Profile.DoesNotExist:" -1 t)
              (python-info-closing-block)))
   (python-tests-look-at "if profile.stats:")
   (should (not (python-info-closing-block)))
   (python-tests-look-at "else:")
   (should (= (python-tests-look-at "if profile.stats:" -1 t)
              (python-info-closing-block)))
   (python-tests-look-at "finally:")
   (should (= (python-tests-look-at "else:" -2 t)
              (python-info-closing-block)))))

(ert-deftest python-info-closing-block-2 ()
  (python-tests-with-temp-buffer
   "
if request.user.is_authenticated():
    profile = Profile.objects.get_or_create(user=request.user)
    if profile.stats:
        profile.recalculate_stats()

data = {
    'else': 'do it'
}
    'else'
"
   (python-tests-look-at "'else': 'do it'")
   (should (not (python-info-closing-block)))
   (python-tests-look-at "'else'")
   (should (not (python-info-closing-block)))))

(ert-deftest python-info-line-ends-backslash-p-1 ()
  (python-tests-with-temp-buffer
   "
objects = Thing.objects.all() \\\\
                       .filter(
                           type='toy',
                           status='bought'
                       ) \\\\
                       .aggregate(
                           Sum('amount')
                       ) \\\\
                       .values_list()
"
   (should (python-info-line-ends-backslash-p 2)) ; .filter(...
   (should (python-info-line-ends-backslash-p 3))
   (should (python-info-line-ends-backslash-p 4))
   (should (python-info-line-ends-backslash-p 5))
   (should (python-info-line-ends-backslash-p 6)) ; ) \...
   (should (python-info-line-ends-backslash-p 7))
   (should (python-info-line-ends-backslash-p 8))
   (should (python-info-line-ends-backslash-p 9))
   (should (not (python-info-line-ends-backslash-p 10))))) ; .values_list()...

(ert-deftest python-info-beginning-of-backslash-1 ()
  (python-tests-with-temp-buffer
   "
objects = Thing.objects.all() \\\\
                       .filter(
                           type='toy',
                           status='bought'
                       ) \\\\
                       .aggregate(
                           Sum('amount')
                       ) \\\\
                       .values_list()
"
   (let ((first 2)
         (second (python-tests-look-at ".filter("))
         (third (python-tests-look-at ".aggregate(")))
     (should (= first (python-info-beginning-of-backslash 2)))
     (should (= second (python-info-beginning-of-backslash 3)))
     (should (= second (python-info-beginning-of-backslash 4)))
     (should (= second (python-info-beginning-of-backslash 5)))
     (should (= second (python-info-beginning-of-backslash 6)))
     (should (= third (python-info-beginning-of-backslash 7)))
     (should (= third (python-info-beginning-of-backslash 8)))
     (should (= third (python-info-beginning-of-backslash 9)))
     (should (not (python-info-beginning-of-backslash 10))))))

(ert-deftest python-info-continuation-line-p-1 ()
  (python-tests-with-temp-buffer
   "
if width == 0 and height == 0 and \\\\
   color == 'red' and emphasis == 'strong' or \\\\
   highlight > 100:
    raise ValueError(
'sorry, you lose'

)
"
   (python-tests-look-at "if width == 0 and height == 0 and")
   (should (not (python-info-continuation-line-p)))
   (python-tests-look-at "color == 'red' and emphasis == 'strong' or")
   (should (python-info-continuation-line-p))
   (python-tests-look-at "highlight > 100:")
   (should (python-info-continuation-line-p))
   (python-tests-look-at "raise ValueError(")
   (should (not (python-info-continuation-line-p)))
   (python-tests-look-at "'sorry, you lose'")
   (should (python-info-continuation-line-p))
   (forward-line 1)
   (should (python-info-continuation-line-p))
   (python-tests-look-at ")")
   (should (python-info-continuation-line-p))
   (forward-line 1)
   (should (not (python-info-continuation-line-p)))))

(ert-deftest python-info-block-continuation-line-p-1 ()
  (python-tests-with-temp-buffer
   "
if width == 0 and height == 0 and \\\\
   color == 'red' and emphasis == 'strong' or \\\\
   highlight > 100:
    raise ValueError(
'sorry, you lose'

)
"
   (python-tests-look-at "if width == 0 and")
   (should (not (python-info-block-continuation-line-p)))
   (python-tests-look-at "color == 'red' and emphasis == 'strong' or")
   (should (= (python-info-block-continuation-line-p)
              (python-tests-look-at "if width == 0 and" -1 t)))
   (python-tests-look-at "highlight > 100:")
   (should (not (python-info-block-continuation-line-p)))))

(ert-deftest python-info-block-continuation-line-p-2 ()
  (python-tests-with-temp-buffer
   "
def foo(a,
        b,
        c):
    pass
"
   (python-tests-look-at "def foo(a,")
   (should (not (python-info-block-continuation-line-p)))
   (python-tests-look-at "b,")
   (should (= (python-info-block-continuation-line-p)
              (python-tests-look-at "def foo(a," -1 t)))
   (python-tests-look-at "c):")
   (should (not (python-info-block-continuation-line-p)))))

(ert-deftest python-info-assignment-continuation-line-p-1 ()
  (python-tests-with-temp-buffer
   "
data = foo(), bar() \\\\
       baz(), 4 \\\\
       5, 6
"
   (python-tests-look-at "data = foo(), bar()")
   (should (not (python-info-assignment-continuation-line-p)))
   (python-tests-look-at "baz(), 4")
   (should (= (python-info-assignment-continuation-line-p)
              (python-tests-look-at "foo()," -1 t)))
   (python-tests-look-at "5, 6")
   (should (not (python-info-assignment-continuation-line-p)))))

(ert-deftest python-info-assignment-continuation-line-p-2 ()
  (python-tests-with-temp-buffer
   "
data = (foo(), bar()
        baz(), 4
        5, 6)
"
   (python-tests-look-at "data = (foo(), bar()")
   (should (not (python-info-assignment-continuation-line-p)))
   (python-tests-look-at "baz(), 4")
   (should (= (python-info-assignment-continuation-line-p)
              (python-tests-look-at "(foo()," -1 t)))
   (python-tests-look-at "5, 6)")
   (should (not (python-info-assignment-continuation-line-p)))))

(ert-deftest python-info-looking-at-beginning-of-defun-1 ()
  (python-tests-with-temp-buffer
   "
def decorat0r(deff):
    '''decorates stuff.

    @decorat0r
    def foo(arg):
        ...
    '''
    def wrap():
        deff()
    return wwrap
"
   (python-tests-look-at "def decorat0r(deff):")
   (should (python-info-looking-at-beginning-of-defun))
   (python-tests-look-at "def foo(arg):")
   (should (not (python-info-looking-at-beginning-of-defun)))
   (python-tests-look-at "def wrap():")
   (should (python-info-looking-at-beginning-of-defun))
   (python-tests-look-at "deff()")
   (should (not (python-info-looking-at-beginning-of-defun)))))

(ert-deftest python-info-current-line-comment-p-1 ()
  (python-tests-with-temp-buffer
   "
# this is a comment
foo = True  # another comment
'#this is a string'
if foo:
    # more comments
    print ('bar') # print bar
"
   (python-tests-look-at "# this is a comment")
   (should (python-info-current-line-comment-p))
   (python-tests-look-at "foo = True  # another comment")
   (should (not (python-info-current-line-comment-p)))
   (python-tests-look-at "'#this is a string'")
   (should (not (python-info-current-line-comment-p)))
   (python-tests-look-at "# more comments")
   (should (python-info-current-line-comment-p))
   (python-tests-look-at "print ('bar') # print bar")
   (should (not (python-info-current-line-comment-p)))))

(ert-deftest python-info-current-line-empty-p ()
  (python-tests-with-temp-buffer
   "
# this is a comment

foo = True  # another comment
"
   (should (python-info-current-line-empty-p))
   (python-tests-look-at "# this is a comment")
   (should (not (python-info-current-line-empty-p)))
   (forward-line 1)
   (should (python-info-current-line-empty-p))))


;;; Utility functions

(ert-deftest python-util-goto-line-1 ()
  (python-tests-with-temp-buffer
   (concat
    "# a comment
# another comment
def foo(a, b, c):
    pass" (make-string 20 ?\n))
   (python-util-goto-line 10)
   (should (= (line-number-at-pos) 10))
   (python-util-goto-line 20)
   (should (= (line-number-at-pos) 20))))

(ert-deftest python-util-clone-local-variables-1 ()
  (let ((buffer (generate-new-buffer
                 "python-util-clone-local-variables-1"))
        (varcons
         '((python-fill-docstring-style . django)
           (python-shell-interpreter . "python")
           (python-shell-interpreter-args . "manage.py shell")
           (python-shell-prompt-regexp . "In \\[[0-9]+\\]: ")
           (python-shell-prompt-output-regexp . "Out\\[[0-9]+\\]: ")
           (python-shell-extra-pythonpaths "/home/user/pylib/")
           (python-shell-completion-setup-code
            . "from IPython.core.completerlib import module_completion")
           (python-shell-completion-module-string-code
            . "';'.join(module_completion('''%s'''))\n")
           (python-shell-completion-string-code
            . "';'.join(get_ipython().Completer.all_completions('''%s'''))\n")
           (python-shell-virtualenv-path
            . "/home/user/.virtualenvs/project"))))
    (with-current-buffer buffer
      (kill-all-local-variables)
      (dolist (ccons varcons)
        (set (make-local-variable (car ccons)) (cdr ccons))))
    (python-tests-with-temp-buffer
     ""
     (python-util-clone-local-variables buffer)
     (dolist (ccons varcons)
       (should
        (equal (symbol-value (car ccons)) (cdr ccons)))))
    (kill-buffer buffer)))

(ert-deftest python-util-forward-comment-1 ()
  (python-tests-with-temp-buffer
   (concat
    "# a comment
# another comment
     # bad indented comment
# more comments" (make-string 9999 ?\n))
   (python-util-forward-comment 1)
   (should (= (point) (point-max)))
   (python-util-forward-comment -1)
   (should (= (point) (point-min)))))


(provide 'python-tests)

;; Local Variables:
;; coding: utf-8
;; indent-tabs-mode: nil
;; End:

;;; python-tests.el ends here