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// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package xslices_test
import (
"math/rand"
"net/url"
"slices"
"testing"
"github.com/stretchr/testify/assert"
"github.com/superseriousbusiness/gotosocial/internal/util/xslices"
)
func TestGrowJust(t *testing.T) {
for _, l := range []int{0, 2, 4, 8, 16, 32, 64} {
for _, x := range []int{0, 2, 4, 8, 16, 32, 64} {
s := make([]int, l, l+x)
for _, g := range []int{0, 2, 4, 8, 16, 32, 64} {
s2 := xslices.GrowJust(s, g)
// Slice length should not be different.
assert.Equal(t, len(s), len(s2))
switch {
// If slice already has capacity for
// 'g' then it should not be changed.
case cap(s) >= len(s)+g:
assert.Equal(t, cap(s), cap(s2))
// Else, returned slice should only
// have capacity for original length
// plus extra elements, NOTHING MORE.
default:
assert.Equal(t, cap(s2), len(s)+g)
}
}
}
}
}
func TestAppendJust(t *testing.T) {
for _, l := range []int{0, 2, 4, 8, 16, 32, 64} {
for _, x := range []int{0, 2, 4, 8, 16, 32, 64} {
s := make([]int, l, l+x)
// Randomize slice.
for i := range s {
s[i] = rand.Int()
}
for _, a := range []int{0, 2, 4, 8, 16, 32, 64} {
toAppend := make([]int, a)
// Randomize appended vals.
for i := range toAppend {
toAppend[i] = rand.Int()
}
s2 := xslices.AppendJust(s, toAppend...)
// Slice length should be as expected.
assert.Equal(t, len(s)+a, len(s2))
// Slice contents should be as expected.
assert.Equal(t, append(s, toAppend...), s2)
switch {
// If slice already has capacity for
// 'toAppend' then it should not change.
case cap(s) >= len(s)+a:
assert.Equal(t, cap(s), cap(s2))
// Else, returned slice should only
// have capacity for original length
// plus extra elements, NOTHING MORE.
default:
assert.Equal(t, len(s)+a, cap(s2))
}
}
}
}
}
func TestGather(t *testing.T) {
out := xslices.Gather(nil, []*url.URL{
{Scheme: "https", Host: "google.com", Path: "/some-search"},
{Scheme: "http", Host: "example.com", Path: "/robots.txt"},
}, (*url.URL).String)
if !slices.Equal(out, []string{
"https://google.com/some-search",
"http://example.com/robots.txt",
}) {
t.Fatal("unexpected gather output")
}
out = xslices.Gather([]string{
"starting input string",
"another starting input",
}, []*url.URL{
{Scheme: "https", Host: "google.com", Path: "/some-search"},
{Scheme: "http", Host: "example.com", Path: "/robots.txt"},
}, (*url.URL).String)
if !slices.Equal(out, []string{
"starting input string",
"another starting input",
"https://google.com/some-search",
"http://example.com/robots.txt",
}) {
t.Fatal("unexpected gather output")
}
}
func TestGatherIf(t *testing.T) {
out := xslices.GatherIf(nil, []string{
"hello world",
"not hello world",
"hello world",
}, func(s string) (string, bool) {
return s, s == "hello world"
})
if !slices.Equal(out, []string{
"hello world",
"hello world",
}) {
t.Fatal("unexpected gatherif output")
}
out = xslices.GatherIf([]string{
"starting input string",
"another starting input",
}, []string{
"hello world",
"not hello world",
"hello world",
}, func(s string) (string, bool) {
return s, s == "hello world"
})
if !slices.Equal(out, []string{
"starting input string",
"another starting input",
"hello world",
"hello world",
}) {
t.Fatal("unexpected gatherif output")
}
}
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