8dc2499aa6
gotools/ * Makefile.am (go_cmd_cgo_files): Add ast_go118.go (check-go-tool): Copy golang.org/x/tools directories. * Makefile.in: Regenerate. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/384695
89 lines
2.1 KiB
Go
89 lines
2.1 KiB
Go
// Copyright 2020 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package netip
|
|
|
|
import (
|
|
"testing"
|
|
)
|
|
|
|
func TestUint128AddSub(t *testing.T) {
|
|
const add1 = 1
|
|
const sub1 = -1
|
|
tests := []struct {
|
|
in uint128
|
|
op int // +1 or -1 to add vs subtract
|
|
want uint128
|
|
}{
|
|
{uint128{0, 0}, add1, uint128{0, 1}},
|
|
{uint128{0, 1}, add1, uint128{0, 2}},
|
|
{uint128{1, 0}, add1, uint128{1, 1}},
|
|
{uint128{0, ^uint64(0)}, add1, uint128{1, 0}},
|
|
{uint128{^uint64(0), ^uint64(0)}, add1, uint128{0, 0}},
|
|
|
|
{uint128{0, 0}, sub1, uint128{^uint64(0), ^uint64(0)}},
|
|
{uint128{0, 1}, sub1, uint128{0, 0}},
|
|
{uint128{0, 2}, sub1, uint128{0, 1}},
|
|
{uint128{1, 0}, sub1, uint128{0, ^uint64(0)}},
|
|
{uint128{1, 1}, sub1, uint128{1, 0}},
|
|
}
|
|
for _, tt := range tests {
|
|
var got uint128
|
|
switch tt.op {
|
|
case add1:
|
|
got = tt.in.addOne()
|
|
case sub1:
|
|
got = tt.in.subOne()
|
|
default:
|
|
panic("bogus op")
|
|
}
|
|
if got != tt.want {
|
|
t.Errorf("%v add %d = %v; want %v", tt.in, tt.op, got, tt.want)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestBitsSetFrom(t *testing.T) {
|
|
tests := []struct {
|
|
bit uint8
|
|
want uint128
|
|
}{
|
|
{0, uint128{^uint64(0), ^uint64(0)}},
|
|
{1, uint128{^uint64(0) >> 1, ^uint64(0)}},
|
|
{63, uint128{1, ^uint64(0)}},
|
|
{64, uint128{0, ^uint64(0)}},
|
|
{65, uint128{0, ^uint64(0) >> 1}},
|
|
{127, uint128{0, 1}},
|
|
{128, uint128{0, 0}},
|
|
}
|
|
for _, tt := range tests {
|
|
var zero uint128
|
|
got := zero.bitsSetFrom(tt.bit)
|
|
if got != tt.want {
|
|
t.Errorf("0.bitsSetFrom(%d) = %064b want %064b", tt.bit, got, tt.want)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestBitsClearedFrom(t *testing.T) {
|
|
tests := []struct {
|
|
bit uint8
|
|
want uint128
|
|
}{
|
|
{0, uint128{0, 0}},
|
|
{1, uint128{1 << 63, 0}},
|
|
{63, uint128{^uint64(0) &^ 1, 0}},
|
|
{64, uint128{^uint64(0), 0}},
|
|
{65, uint128{^uint64(0), 1 << 63}},
|
|
{127, uint128{^uint64(0), ^uint64(0) &^ 1}},
|
|
{128, uint128{^uint64(0), ^uint64(0)}},
|
|
}
|
|
for _, tt := range tests {
|
|
ones := uint128{^uint64(0), ^uint64(0)}
|
|
got := ones.bitsClearedFrom(tt.bit)
|
|
if got != tt.want {
|
|
t.Errorf("ones.bitsClearedFrom(%d) = %064b want %064b", tt.bit, got, tt.want)
|
|
}
|
|
}
|
|
}
|