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gitea/modules/markup/html_node_test.go
Gregorius Bima Kharisma Wicaksana f9d3983de2
fix: generate IDs for HTML headings without id attribute (#36233)
This PR fixes #27383 where HTML headings like `<h1>Title</h1>` in
markdown files would have empty permalink anchors

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
2026-01-06 05:09:44 +00:00

105 lines
3.3 KiB
Go

// Copyright 2024 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package markup
import (
"strings"
"testing"
"github.com/stretchr/testify/assert"
)
func TestProcessNodeAttrID_HTMLHeadingWithoutID(t *testing.T) {
// Test that HTML headings without id get an auto-generated id from their text content
// when EnableHeadingIDGeneration is true (for repo files and wiki pages)
testCases := []struct {
name string
input string
expected string
}{
{
name: "h1 without id",
input: `<h1>Heading without ID</h1>`,
expected: `<h1 id="user-content-heading-without-id">Heading without ID</h1>`,
},
{
name: "h2 without id",
input: `<h2>Another Heading</h2>`,
expected: `<h2 id="user-content-another-heading">Another Heading</h2>`,
},
{
name: "h3 without id",
input: `<h3>Third Level</h3>`,
expected: `<h3 id="user-content-third-level">Third Level</h3>`,
},
{
name: "h1 with existing id should keep it",
input: `<h1 id="my-custom-id">Heading with ID</h1>`,
expected: `<h1 id="user-content-my-custom-id">Heading with ID</h1>`,
},
{
name: "h1 with user-content prefix should not double prefix",
input: `<h1 id="user-content-already-prefixed">Already Prefixed</h1>`,
expected: `<h1 id="user-content-already-prefixed">Already Prefixed</h1>`,
},
{
name: "heading with special characters",
input: `<h1>What is Wine Staging?</h1>`,
expected: `<h1 id="user-content-what-is-wine-staging">What is Wine Staging?</h1>`,
},
{
name: "heading with nested elements",
input: `<h2><strong>Bold</strong> and <em>Italic</em></h2>`,
expected: `<h2 id="user-content-bold-and-italic"><strong>Bold</strong> and <em>Italic</em></h2>`,
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
var result strings.Builder
ctx := NewTestRenderContext().WithEnableHeadingIDGeneration(true)
err := PostProcessDefault(ctx, strings.NewReader(tc.input), &result)
assert.NoError(t, err)
assert.Equal(t, tc.expected, strings.TrimSpace(result.String()))
})
}
}
func TestProcessNodeAttrID_SkipHeadingIDForComments(t *testing.T) {
// Test that HTML headings in comment-like contexts (issue comments)
// do NOT get auto-generated IDs to avoid duplicate IDs on pages with multiple documents.
// This is controlled by EnableHeadingIDGeneration which defaults to false.
testCases := []struct {
name string
input string
expected string
}{
{
name: "h1 without id in comment context",
input: `<h1>Heading without ID</h1>`,
expected: `<h1>Heading without ID</h1>`,
},
{
name: "h2 without id in comment context",
input: `<h2>Another Heading</h2>`,
expected: `<h2>Another Heading</h2>`,
},
{
name: "h1 with existing id should still be prefixed",
input: `<h1 id="my-custom-id">Heading with ID</h1>`,
expected: `<h1 id="user-content-my-custom-id">Heading with ID</h1>`,
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
var result strings.Builder
// Default context without EnableHeadingIDGeneration (simulates comment rendering)
err := PostProcessDefault(NewTestRenderContext(), strings.NewReader(tc.input), &result)
assert.NoError(t, err)
assert.Equal(t, tc.expected, strings.TrimSpace(result.String()))
})
}
}