snapshot of https://github.com/go-gitea/gitea.git (main, 2026-09-15; blobs > 131072B omitted)

modules/emoji/emoji_test.go

@@ -0,0 +1,125 @@
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// Copyright 2015 Kenneth Shaw
+// SPDX-License-Identifier: MIT
+
+package emoji
+
+import (
+	"testing"
+
+	"gitea.dev/modules/container"
+	"gitea.dev/modules/setting"
+	"gitea.dev/modules/test"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestLookup(t *testing.T) {
+	a := FromCode("\U0001f37a")
+	b := FromCode("🍺")
+	c := FromAlias(":beer:")
+	d := FromAlias("beer")
+
+	assert.Equal(t, a, b)
+	assert.Equal(t, b, c)
+	assert.Equal(t, c, d)
+
+	m := FromCode("\U0001f44d")
+	n := FromAlias(":thumbsup:")
+	o := FromAlias("+1")
+
+	assert.Equal(t, m, n)
+	assert.Equal(t, m, o)
+
+	defer test.MockVariableValue(&setting.UI.EnabledEmojisSet, container.SetOf("thumbsup"))()
+	defer globalVarsStore.Store(nil)
+	globalVarsStore.Store(nil)
+	a = FromCode("\U0001f37a")
+	c = FromAlias(":beer:")
+	m = FromCode("\U0001f44d")
+	n = FromAlias(":thumbsup:")
+	o = FromAlias("+1")
+	assert.Nil(t, a)
+	assert.Nil(t, c)
+	assert.NotNil(t, m)
+	assert.NotNil(t, n)
+	assert.Nil(t, o)
+}
+
+func TestReplacers(t *testing.T) {
+	tests := []struct {
+		f      func(string) string
+		v, exp string
+	}{
+		{ReplaceCodes, ":thumbsup: +1 for \U0001f37a! 🍺 \U0001f44d", ":thumbsup: +1 for :beer:! :beer: :+1:"},
+		{ReplaceAliases, ":thumbsup: +1 :+1: :beer:", "\U0001f44d +1 \U0001f44d \U0001f37a"},
+	}
+
+	for i, x := range tests {
+		s := x.f(x.v)
+		assert.Equalf(t, x.exp, s, "test %d `%s` expected `%s`, got: `%s`", i, x.v, x.exp, s)
+	}
+}
+
+const (
+	testInputWithEmojis = "This is a test string containing some emojis like \U0001f44d and \U0001f37a and some text in between."
+	testInputNoEmojis   = "This is a test string containing no emojis at all, just plain old ASCII text, which should ideally be scanned very quickly by our trie implementation."
+)
+
+func TestFindEmojiSubmatchIndex(t *testing.T) {
+	type testcase struct {
+		input    string
+		expected []int
+	}
+
+	testCases := []testcase{
+		{
+			"\U0001f44d",
+			[]int{0, len("\U0001f44d")},
+		},
+		{
+			"\U0001f44d +1 \U0001f44d \U0001f37a",
+			[]int{0, 4},
+		},
+		{
+			" \U0001f44d",
+			[]int{1, 1 + len("\U0001f44d")},
+		},
+		{
+			"\u0001\U0001f44d",
+			[]int{1, 1 + len("\U0001f44d")},
+		},
+		{
+			// This package can handle keycap emoji if it is registered in the emoji data.
+			// However, many other places (e.g.: markup rendering) also might not handle such cases correctly.
+			// For example: how is "**{U+FE0F}{U+20E3}**" rendered in Markdown/Markup?
+			"a 8\U0000fe0f\U000020e3 b", // keycap emoji "8\ufe0f\u20e3" in emoji data
+			[]int{2, 2 + len("8\U0000fe0f\U000020e3")},
+		},
+		{
+			testInputWithEmojis,
+			[]int{50, 54},
+		},
+		{
+			testInputNoEmojis,
+			nil,
+		},
+	}
+
+	for _, tc := range testCases {
+		actual := FindEmojiSubmatchIndex(tc.input)
+		assert.Equal(t, tc.expected, actual)
+	}
+}
+
+func BenchmarkFindEmojiSubmatchIndex(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		_ = FindEmojiSubmatchIndex(testInputWithEmojis)
+	}
+}
+
+func BenchmarkFindEmojiSubmatchIndexNoMatch(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		_ = FindEmojiSubmatchIndex(testInputNoEmojis)
+	}
+}