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	This PR adds mathematical rendering with KaTeX. The first step is to add a Goldmark extension that detects the latex (and tex) mathematics delimiters. The second step to make this extension only run if math support is enabled. The second step is to then add KaTeX CSS and JS to the head which will load after the dom is rendered. Fix #3445 Signed-off-by: Andrew Thornton <art27@cantab.net> Signed-off-by: Andrew Thornton <art27@cantab.net> Co-authored-by: silverwind <me@silverwind.io> Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
		
			
				
	
	
		
			107 lines
		
	
	
		
			3.2 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			107 lines
		
	
	
		
			3.2 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
| // Copyright 2020 The Gitea Authors. All rights reserved.
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| // Use of this source code is governed by a MIT-style
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| // license that can be found in the LICENSE file.
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| 
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| package markdown
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| 
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| import (
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| 	"fmt"
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| 	"strings"
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| 	"testing"
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| 
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| 	"code.gitea.io/gitea/modules/structs"
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| 
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| 	"github.com/stretchr/testify/assert"
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| )
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| 
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| func validateMetadata(it structs.IssueTemplate) bool {
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| 	/*
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| 		A legacy to keep the unit tests working.
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| 		Copied from the method "func (it IssueTemplate) Valid() bool", the original method has been removed.
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| 		Because it becomes quite complicated to validate an issue template which is support yaml form now.
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| 		The new way to validate an issue template is to call the Validate in modules/issue/template,
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| 	*/
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| 	return strings.TrimSpace(it.Name) != "" && strings.TrimSpace(it.About) != ""
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| }
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| 
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| func TestExtractMetadata(t *testing.T) {
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| 	t.Run("ValidFrontAndBody", func(t *testing.T) {
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| 		var meta structs.IssueTemplate
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| 		body, err := ExtractMetadata(fmt.Sprintf("%s\n%s\n%s\n%s", sepTest, frontTest, sepTest, bodyTest), &meta)
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| 		assert.NoError(t, err)
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| 		assert.Equal(t, bodyTest, body)
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| 		assert.Equal(t, metaTest, meta)
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| 		assert.True(t, validateMetadata(meta))
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| 	})
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| 
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| 	t.Run("NoFirstSeparator", func(t *testing.T) {
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| 		var meta structs.IssueTemplate
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| 		_, err := ExtractMetadata(fmt.Sprintf("%s\n%s\n%s", frontTest, sepTest, bodyTest), &meta)
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| 		assert.Error(t, err)
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| 	})
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| 
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| 	t.Run("NoLastSeparator", func(t *testing.T) {
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| 		var meta structs.IssueTemplate
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| 		_, err := ExtractMetadata(fmt.Sprintf("%s\n%s\n%s", sepTest, frontTest, bodyTest), &meta)
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| 		assert.Error(t, err)
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| 	})
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| 
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| 	t.Run("NoBody", func(t *testing.T) {
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| 		var meta structs.IssueTemplate
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| 		body, err := ExtractMetadata(fmt.Sprintf("%s\n%s\n%s", sepTest, frontTest, sepTest), &meta)
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| 		assert.NoError(t, err)
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| 		assert.Equal(t, "", body)
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| 		assert.Equal(t, metaTest, meta)
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| 		assert.True(t, validateMetadata(meta))
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| 	})
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| }
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| 
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| func TestExtractMetadataBytes(t *testing.T) {
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| 	t.Run("ValidFrontAndBody", func(t *testing.T) {
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| 		var meta structs.IssueTemplate
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| 		body, err := ExtractMetadataBytes([]byte(fmt.Sprintf("%s\n%s\n%s\n%s", sepTest, frontTest, sepTest, bodyTest)), &meta)
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| 		assert.NoError(t, err)
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| 		assert.Equal(t, bodyTest, body)
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| 		assert.Equal(t, metaTest, meta)
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| 		assert.True(t, validateMetadata(meta))
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| 	})
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| 
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| 	t.Run("NoFirstSeparator", func(t *testing.T) {
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| 		var meta structs.IssueTemplate
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| 		_, err := ExtractMetadataBytes([]byte(fmt.Sprintf("%s\n%s\n%s", frontTest, sepTest, bodyTest)), &meta)
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| 		assert.Error(t, err)
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| 	})
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| 
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| 	t.Run("NoLastSeparator", func(t *testing.T) {
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| 		var meta structs.IssueTemplate
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| 		_, err := ExtractMetadataBytes([]byte(fmt.Sprintf("%s\n%s\n%s", sepTest, frontTest, bodyTest)), &meta)
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| 		assert.Error(t, err)
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| 	})
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| 
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| 	t.Run("NoBody", func(t *testing.T) {
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| 		var meta structs.IssueTemplate
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| 		body, err := ExtractMetadataBytes([]byte(fmt.Sprintf("%s\n%s\n%s", sepTest, frontTest, sepTest)), &meta)
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| 		assert.NoError(t, err)
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| 		assert.Equal(t, "", body)
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| 		assert.Equal(t, metaTest, meta)
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| 		assert.True(t, validateMetadata(meta))
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| 	})
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| }
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| 
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| var (
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| 	sepTest   = "-----"
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| 	frontTest = `name: Test
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| about: "A Test"
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| title: "Test Title"
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| labels:
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|   - bug
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|   - "test label"`
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| 	bodyTest = "This is the body"
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| 	metaTest = structs.IssueTemplate{
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| 		Name:   "Test",
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| 		About:  "A Test",
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| 		Title:  "Test Title",
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| 		Labels: []string{"bug", "test label"},
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| 	}
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| )
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