// Copyright 2018 The Gitea Authors. All rights reserved.// Copyright 2025 The Forgejo Authors.// SPDX-License-Identifier: MIT package markup import (	"fmt"	"strconv"	"strings"	"testing" 	"forgejo.org/modules/git"	"forgejo.org/modules/setting"	"forgejo.org/modules/util" 	"github.com/stretchr/testify/assert"	"github.com/stretchr/testify/require") const (	TestAppURL  = "http://localhost:3000/"	TestOrgRepo = "gogits/gogs"	TestRepoURL = TestAppURL + TestOrgRepo + "/") // externalIssueLink an HTML link to an alphanumeric-style issuefunc externalIssueLink(baseURL, class, name string) string {	return link(util.URLJoin(baseURL, name), class, name)} // numericLink an HTML to a numeric-style issuefunc numericIssueLink(baseURL, class string, index int, marker string) string {	return link(util.URLJoin(baseURL, strconv.Itoa(index)), class, fmt.Sprintf("%s%d", marker, index))} // link an HTML linkfunc link(href, class, contents string) string {	if class != "" {		class = " class=\"" + class + "\""	} 	return fmt.Sprintf("<a href=\"%s\"%s>%s</a>", href, class, contents)} var numericMetas = map[string]string{	"format": "https://someurl.com/{user}/{repo}/{index}",	"user":   "someUser",	"repo":   "someRepo",	"style":  IssueNameStyleNumeric,} var alphanumericMetas = map[string]string{	"format": "https://someurl.com/{user}/{repo}/{index}",	"user":   "someUser",	"repo":   "someRepo",	"style":  IssueNameStyleAlphanumeric,} var regexpMetas = map[string]string{	"format": "https://someurl.com/{user}/{repo}/{index}",	"user":   "someUser",	"repo":   "someRepo",	"style":  IssueNameStyleRegexp,} // these values should match the TestOrgRepo const abovevar localMetas = map[string]string{	"user": "gogits",	"repo": "gogs",} func TestRender_IssueIndexPattern(t *testing.T) {	// numeric: render inputs without valid mentions	test := func(s string) {		testRenderIssueIndexPattern(t, s, s, &RenderContext{			Ctx: git.DefaultContext,		})		testRenderIssueIndexPattern(t, s, s, &RenderContext{			Ctx:   git.DefaultContext,			Metas: numericMetas,		})	} 	// should not render anything when there are no mentions	test("")	test("this is a test")	test("test 123 123 1234")	test("#")	test("# # #")	test("# 123")	test("#abcd")	test("test#1234")	test("#1234test")	test("#abcd")	test("test!1234")	test("!1234test")	test(" test !1234test")	test("/home/gitea/#1234")	test("/home/gitea/!1234") 	// should not render issue mention without leading space	test("test#54321 issue") 	// should not render issue mention without trailing space	test("test #54321issue")} func TestRender_IssueIndexPattern2(t *testing.T) {	setting.AppURL = TestAppURL 	// numeric: render inputs with valid mentions	test := func(s, expectedFmt, marker string, indices ...int) {		var path, prefix string		isExternal := false		if marker == "!" {			path = "pulls"			prefix = "http://localhost:3000/someUser/someRepo/pulls/"		} else {			path = "issues"			prefix = "https://someurl.com/someUser/someRepo/"			isExternal = true		} 		links := make([]any, len(indices))		for i, index := range indices {			links[i] = numericIssueLink(util.URLJoin(TestRepoURL, path), "ref-issue", index, marker)		}		expectedNil := fmt.Sprintf(expectedFmt, links...)		testRenderIssueIndexPattern(t, s, expectedNil, &RenderContext{			Ctx:   git.DefaultContext,			Metas: localMetas,		}) 		class := "ref-issue"		if isExternal {			class += " ref-external-issue"		} 		for i, index := range indices {			links[i] = numericIssueLink(prefix, class, index, marker)		}		expectedNum := fmt.Sprintf(expectedFmt, links...)		testRenderIssueIndexPattern(t, s, expectedNum, &RenderContext{			Ctx:   git.DefaultContext,			Metas: numericMetas,		})	} 	// should render freestanding mentions	test("#1234 test", "%s test", "#", 1234)	test("test #8 issue", "test %s issue", "#", 8)	test("!1234 test", "%s test", "!", 1234)	test("test !8 issue", "test %s issue", "!", 8)	test("test issue #1234", "test issue %s", "#", 1234)	test("fixes issue #1234.", "fixes issue %s.", "#", 1234) 	// should render mentions in parentheses / brackets	test("(#54321 issue)", "(%s issue)", "#", 54321)	test("[#54321 issue]", "[%s issue]", "#", 54321)	test("test (#9801 extra) issue", "test (%s extra) issue", "#", 9801)	test("test (!9801 extra) issue", "test (%s extra) issue", "!", 9801)	test("test (#1)", "test (%s)", "#", 1) 	// should render multiple issue mentions in the same line	test("#54321 #1243", "%s %s", "#", 54321, 1243)	test("wow (#54321 #1243)", "wow (%s %s)", "#", 54321, 1243)	test("(#4)(#5)", "(%s)(%s)", "#", 4, 5)	test("#1 (#4321) test", "%s (%s) test", "#", 1, 4321) 	// should render with :	test("#1234: test", "%s: test", "#", 1234)	test("wow (#54321: test)", "wow (%s: test)", "#", 54321)} func TestRender_IssueIndexPattern3(t *testing.T) {	setting.AppURL = TestAppURL 	// alphanumeric: render inputs without valid mentions	test := func(s string) {		testRenderIssueIndexPattern(t, s, s, &RenderContext{			Ctx:   git.DefaultContext,			Metas: alphanumericMetas,		})	}	test("")	test("this is a test")	test("test 123 123 1234")	test("#")	test("# 123")	test("#abcd")	test("test #123")	test("abc-1234")         // issue prefix must be capital	test("ABc-1234")         // issue prefix must be _all_ capital	test("ABCDEFGHIJK-1234") // the limit is 10 characters in the prefix	test("ABC1234")          // dash is required	test("test ABC- test")   // number is required	test("test -1234 test")  // prefix is required	test("testABC-123 test") // leading space is required	test("test ABC-123test") // trailing space is required	test("ABC-0123")         // no leading zero} func TestRender_IssueIndexPattern4(t *testing.T) {	setting.AppURL = TestAppURL 	// alphanumeric: render inputs with valid mentions	test := func(s, expectedFmt string, names ...string) {		links := make([]any, len(names))		for i, name := range names {			links[i] = externalIssueLink("https://someurl.com/someUser/someRepo/", "ref-issue ref-external-issue", name)		}		expected := fmt.Sprintf(expectedFmt, links...)		testRenderIssueIndexPattern(t, s, expected, &RenderContext{			Ctx:   git.DefaultContext,			Metas: alphanumericMetas,		})	}	test("OTT-1234 test", "%s test", "OTT-1234")	test("test T-12 issue", "test %s issue", "T-12")	test("test issue ABCDEFGHIJ-1234567890", "test issue %s", "ABCDEFGHIJ-1234567890")} func TestRender_IssueIndexPattern5(t *testing.T) {	setting.AppURL = TestAppURL 	// regexp: render inputs without valid mentions	test := func(s, expectedFmt, pattern string, ids, names []string) {		metas := regexpMetas		metas["regexp"] = pattern		links := make([]any, len(ids))		for i, id := range ids {			links[i] = link(util.URLJoin("https://someurl.com/someUser/someRepo/", id), "ref-issue ref-external-issue", names[i])		} 		expected := fmt.Sprintf(expectedFmt, links...)		testRenderIssueIndexPattern(t, s, expected, &RenderContext{			Ctx:   git.DefaultContext,			Metas: metas,		})	} 	test("abc ISSUE-123 def", "abc %s def",		"ISSUE-(\\d+)",		[]string{"123"},		[]string{"ISSUE-123"},	) 	test("abc (ISSUE 123) def", "abc %s def",		"\\(ISSUE (\\d+)\\)",		[]string{"123"},		[]string{"(ISSUE 123)"},	) 	test("abc ISSUE-123 def", "abc %s def",		"(ISSUE-(\\d+))",		[]string{"ISSUE-123"},		[]string{"ISSUE-123"},	) 	testRenderIssueIndexPattern(t, "will not match", "will not match", &RenderContext{		Ctx:   git.DefaultContext,		Metas: regexpMetas,	})} func TestRender_IssueIndexPattern_Document(t *testing.T) {	setting.AppURL = TestAppURL	metas := map[string]string{		"format": "https://someurl.com/{user}/{repo}/{index}",		"user":   "someUser",		"repo":   "someRepo",		"style":  IssueNameStyleNumeric,		"mode":   "document",	} 	testRenderIssueIndexPattern(t, "#1", "#1", &RenderContext{		Ctx:   git.DefaultContext,		Metas: metas,	})	testRenderIssueIndexPattern(t, "#1312", "#1312", &RenderContext{		Ctx:   git.DefaultContext,		Metas: metas,	})	testRenderIssueIndexPattern(t, "!1", "!1", &RenderContext{		Ctx:   git.DefaultContext,		Metas: metas,	})} func testRenderIssueIndexPattern(t *testing.T, input, expected string, ctx *RenderContext) {	ctx.Links.AbsolutePrefix = true	if ctx.Links.Base == "" {		ctx.Links.Base = TestRepoURL	} 	var buf strings.Builder	err := postProcess(ctx, []processor{issueIndexPatternProcessor}, strings.NewReader(input), &buf)	require.NoError(t, err)	assert.Equal(t, expected, buf.String(), "input=%q", input)} func TestRender_AutoLink(t *testing.T) {	setting.AppURL = TestAppURL 	test := func(input, expected, base string) {		var buffer strings.Builder		err := PostProcess(&RenderContext{			Ctx: git.DefaultContext,			Links: Links{				Base: base,			},			Metas: localMetas,		}, strings.NewReader(input), &buffer)		require.NoError(t, err, nil)		assert.Equal(t, strings.TrimSpace(expected), strings.TrimSpace(buffer.String())) 		buffer.Reset()		err = PostProcess(&RenderContext{			Ctx: git.DefaultContext,			Links: Links{				Base: base,			},			Metas:  localMetas,			IsWiki: true,		}, strings.NewReader(input), &buffer)		require.NoError(t, err)		assert.Equal(t, strings.TrimSpace(expected), strings.TrimSpace(buffer.String()))	} 	t.Run("Issue", func(t *testing.T) {		// render valid issue URLs		test(util.URLJoin(TestRepoURL, "issues", "3333"),			numericIssueLink(util.URLJoin(TestRepoURL, "issues"), "ref-issue", 3333, "#"),			TestRepoURL)	}) 	t.Run("Commit", func(t *testing.T) {		// render valid commit URLs		tmp := util.URLJoin(TestRepoURL, "commit", "d8a994ef243349f321568f9e36d5c3f444b99cae")		test(tmp, "<a href=\""+tmp+"\" class=\"commit\"><code class=\"nohighlight\">d8a994ef24</code></a>", TestRepoURL)		test(tmp, "<a href=\""+tmp+"\" class=\"commit\"><code class=\"nohighlight\">"+TestOrgRepo+"@d8a994ef24</code></a>", "https://localhost/forgejo/forgejo")		test(			tmp+"#diff-2",			"<a href=\""+tmp+"#diff-2\" class=\"commit\"><code class=\"nohighlight\">d8a994ef24 (diff-2)</code></a>",			TestRepoURL,		)		test(			tmp+"#diff-953bb4f01b7c77fa18f0cd54211255051e647dbc",			"<a href=\""+tmp+"#diff-953bb4f01b7c77fa18f0cd54211255051e647dbc\" class=\"commit\"><code class=\"nohighlight\">d8a994ef24 (diff-953bb4f01b)</code></a>",			TestRepoURL,		) 		// render other commit URLs		tmp = "https://external-link.gitea.io/go-gitea/gitea/commit/d8a994ef243349f321568f9e36d5c3f444b99cae#diff-2"		test(tmp, "<a href=\""+tmp+"\" class=\"commit\"><code class=\"nohighlight\">d8a994ef24 (diff-2)</code></a>", "https://external-link.gitea.io/go-gitea/gitea")		test(tmp, "<a href=\""+tmp+"\" class=\"commit\"><code class=\"nohighlight\">go-gitea/gitea@d8a994ef24 (diff-2)</code></a>", TestRepoURL) 		tmp = "http://localhost:3000/gogits/gogs/src/commit/190d9492934af498c3f669d6a2431dc5459e5b20"		test(tmp, "<a href=\""+tmp+"\" class=\"commit\"><code class=\"nohighlight\">190d949293</code></a>", "http://localhost:3000/gogits/gogs")		test(tmp, "<a href=\""+tmp+"\" class=\"commit\"><code class=\"nohighlight\">gogits/gogs@190d949293</code></a>", "https://external-link.gitea.io/go-gitea/gitea") 		tmp = "http://localhost:3000/sub/gogits/gogs/src/commit/190d9492934af498c3f669d6a2431dc5459e5b20"		test(tmp, "<a href=\""+tmp+"\" class=\"commit\"><code class=\"nohighlight\">190d949293</code></a>", "http://localhost:3000/sub/gogits/gogs")		test(tmp, "<a href=\""+tmp+"\" class=\"commit\"><code class=\"nohighlight\">gogits/gogs@190d949293</code></a>", "http://localhost:3000/gogits/gogs")		test(tmp, "<a href=\""+tmp+"\" class=\"commit\"><code class=\"nohighlight\">gogits/gogs@190d949293</code></a>", "https://external-link.gitea.io/go-gitea/gitea") 		tmp = "http://localhost:3000/sub1/sub2/sub3/gogits/gogs/src/commit/190d9492934af498c3f669d6a2431dc5459e5b20"		test(tmp, "<a href=\""+tmp+"\" class=\"commit\"><code class=\"nohighlight\">190d949293</code></a>", "http://localhost:3000/sub1/sub2/sub3/gogits/gogs")		test(tmp, "<a href=\""+tmp+"\" class=\"commit\"><code class=\"nohighlight\">gogits/gogs@190d949293</code></a>", "http://localhost:3000/sub1/gogits/gogs")		test(tmp, "<a href=\""+tmp+"\" class=\"commit\"><code class=\"nohighlight\">gogits/gogs@190d949293</code></a>", "https://external-link.gitea.io/go-gitea/gitea") 		// if the repository happens to be named like one of the known app routes (e.g. `src`),		// we can parse the URL correctly, if there is no sub path		tmp = "http://localhost:3000/gogits/src/commit/190d9492934af498c3f669d6a2431dc5459e5b20"		test(tmp, "<a href=\""+tmp+"\" class=\"commit\"><code class=\"nohighlight\">gogits/src@190d949293</code></a>", TestRepoURL)		tmp = "http://localhost:3000/gogits/src/src/commit/190d9492934af498c3f669d6a2431dc5459e5b20"		test(tmp, "<a href=\""+tmp+"\" class=\"commit\"><code class=\"nohighlight\">gogits/src@190d949293</code></a>", TestRepoURL)		// but if there is a sub path, we cannot reliably distinguish the repo name from the app route		tmp = "http://localhost:3000/sub/gogits/src/commit/190d9492934af498c3f669d6a2431dc5459e5b20"		test(tmp, "<a href=\""+tmp+"\" class=\"commit\"><code class=\"nohighlight\">sub/gogits@190d949293</code></a>", TestRepoURL)	}) 	t.Run("Compare", func(t *testing.T) {		tmp := util.URLJoin(TestRepoURL, "compare", "d8a994ef243349f321568f9e36d5c3f444b99cae..190d9492934af498c3f669d6a2431dc5459e5b20")		test(tmp, "<a href=\""+tmp+"\" class=\"compare\"><code class=\"nohighlight\">d8a994ef24..190d949293</code></a>", TestRepoURL)		test(tmp, "<a href=\""+tmp+"\" class=\"compare\"><code class=\"nohighlight\">"+TestOrgRepo+"@d8a994ef24..190d949293</code></a>", "https://localhost/forgejo/forgejo") 		tmp = "http://localhost:3000/sub/gogits/gogs/compare/190d9492934af498c3f669d6a2431dc5459e5b20..d8a994ef243349f321568f9e36d5c3f444b99cae"		test(tmp, "<a href=\""+tmp+"\" class=\"compare\"><code class=\"nohighlight\">190d949293..d8a994ef24</code></a>", "http://localhost:3000/sub/gogits/gogs")		test(tmp, "<a href=\""+tmp+"\" class=\"compare\"><code class=\"nohighlight\">gogits/gogs@190d949293..d8a994ef24</code></a>", "http://localhost:3000/gogits/gogs")		test(tmp, "<a href=\""+tmp+"\" class=\"compare\"><code class=\"nohighlight\">gogits/gogs@190d949293..d8a994ef24</code></a>", "https://external-link.gitea.io/go-gitea/gitea") 		tmp = "http://localhost:3000/sub1/sub2/sub3/gogits/gogs/compare/190d9492934af498c3f669d6a2431dc5459e5b20..d8a994ef243349f321568f9e36d5c3f444b99cae"		test(tmp, "<a href=\""+tmp+"\" class=\"compare\"><code class=\"nohighlight\">190d949293..d8a994ef24</code></a>", "http://localhost:3000/sub1/sub2/sub3/gogits/gogs")		test(tmp, "<a href=\""+tmp+"\" class=\"compare\"><code class=\"nohighlight\">gogits/gogs@190d949293..d8a994ef24</code></a>", "http://localhost:3000/sub1/gogits/gogs")		test(tmp, "<a href=\""+tmp+"\" class=\"compare\"><code class=\"nohighlight\">gogits/gogs@190d949293..d8a994ef24</code></a>", "https://external-link.gitea.io/go-gitea/gitea") 		tmp = "https://codeberg.org/forgejo/forgejo/compare/8bbac4c679bea930c74849c355a60ed3c52f8eb5...e2278e5a38187a1dc84dc41d583ec8b44e7257c1?files=options/locale/locale_fi-FI.ini"		test(tmp, "<a href=\""+tmp+"\" class=\"compare\"><code class=\"nohighlight\">8bbac4c679...e2278e5a38 (options/locale/locale_fi-FI.ini)</code></a>", "https://codeberg.org/forgejo/forgejo")		test(tmp, "<a href=\""+tmp+"\" class=\"compare\"><code class=\"nohighlight\">forgejo/forgejo@8bbac4c679...e2278e5a38 (options/locale/locale_fi-FI.ini)</code></a>", TestRepoURL)		test(tmp+".", "<a href=\""+tmp+"\" class=\"compare\"><code class=\"nohighlight\">forgejo/forgejo@8bbac4c679...e2278e5a38 (options/locale/locale_fi-FI.ini)</code></a>.", TestRepoURL) 		tmp = "https://codeberg.org/forgejo/forgejo/compare/8bbac4c679bea930c74849c355a60ed3c52f8eb5...e2278e5a38187a1dc84dc41d583ec8b44e7257c1?files=options/locale/locale_fi-FI.ini#L2"		test(tmp, "<a href=\""+tmp+"\" class=\"compare\"><code class=\"nohighlight\">8bbac4c679...e2278e5a38 (options/locale/locale_fi-FI.ini#L2)</code></a>", "https://codeberg.org/forgejo/forgejo")	}) 	t.Run("Invalid URLs", func(t *testing.T) {		tmp := "https://local host/gogits/src/commit/190d9492934af498c3f669d6a2431dc5459e5b20"		test(tmp, "<a href=\"https://local\" class=\"link\">https://local</a> host/gogits/src/commit/190d9492934af498c3f669d6a2431dc5459e5b20", TestRepoURL)	})} func TestRender_IssueIndexPatternRef(t *testing.T) {	setting.AppURL = TestAppURL 	test := func(input, expected string) {		var buf strings.Builder		err := postProcess(&RenderContext{			Ctx:   git.DefaultContext,			Metas: numericMetas,		}, []processor{issueIndexPatternProcessor}, strings.NewReader(input), &buf)		require.NoError(t, err)		assert.Equal(t, expected, buf.String(), "input=%q", input)	} 	test("alan-turin/Enigma-cryptanalysis#1", `<a href="/alan-turin/enigma-cryptanalysis/issues/1" class="ref-issue">alan-turin/Enigma-cryptanalysis#1</a>`)} func TestRender_FullIssueURLs(t *testing.T) {	setting.AppURL = TestAppURL 	test := func(input, expected string) {		var result strings.Builder		err := postProcess(&RenderContext{			Ctx: git.DefaultContext,			Links: Links{				Base: TestRepoURL,			},			Metas: localMetas,		}, []processor{fullIssuePatternProcessor}, strings.NewReader(input), &result)		require.NoError(t, err)		assert.Equal(t, expected, result.String())	}	test("Here is a link https://git.osgeo.org/gogs/postgis/postgis/pulls/6",		"Here is a link https://git.osgeo.org/gogs/postgis/postgis/pulls/6")	test("Look here http://localhost:3000/person/repo/issues/4",		`Look here <a href="http://localhost:3000/person/repo/issues/4" class="ref-issue">person/repo#4</a>`)	test("http://localhost:3000/person/repo/issues/4#issuecomment-1234",		`<a href="http://localhost:3000/person/repo/issues/4#issuecomment-1234" class="ref-issue">person/repo#4 (comment)</a>`)	test("http://localhost:3000/gogits/gogs/issues/4",		`<a href="http://localhost:3000/gogits/gogs/issues/4" class="ref-issue">#4</a>`)	test("http://localhost:3000/gogits/gogs/issues/4 test",		`<a href="http://localhost:3000/gogits/gogs/issues/4" class="ref-issue">#4</a> test`)	test("http://localhost:3000/gogits/gogs/issues/4?a=1&b=2#comment-form test",		`<a href="http://localhost:3000/gogits/gogs/issues/4?a=1&amp;b=2#comment-form" class="ref-issue">#4</a> test`)	test("http://localhost:3000/testOrg/testOrgRepo/pulls/2/files#issuecomment-24",		`<a href="http://localhost:3000/testOrg/testOrgRepo/pulls/2/files#issuecomment-24" class="ref-issue">testOrg/testOrgRepo#2/files (comment)</a>`)	test("http://localhost:3000/testOrg/testOrgRepo/pulls/2/commits",		`<a href="http://localhost:3000/testOrg/testOrgRepo/pulls/2/commits" class="ref-issue">testOrg/testOrgRepo#2/commits</a>`)} func TestRegExp_hashCurrentPattern(t *testing.T) {	trueTestCases := []string{		"d8a994ef243349f321568f9e36d5c3f444b99cae",		"abcdefabcdefabcdefabcdefabcdefabcdefabcd",		"(abcdefabcdefabcdefabcdefabcdefabcdefabcd)",		"[abcdefabcdefabcdefabcdefabcdefabcdefabcd]",		"abcdefabcdefabcdefabcdefabcdefabcdefabcd.",		"abcdefabcdefabcdefabcdefabcdefabcdefabcd:",		"d8a994ef243349f321568f9e36d5c3f444b99cae12424fa123391042fbae2319",		"abcdefd?",		"abcdefd!",		"!abcd3ef",		":abcd3ef",		".abcd3ef",		" (abcd3ef). ",	}	falseTestCases := []string{		"test",		"abcdefg",		"e59ff077-2d03-4e6b-964d-63fbaea81f",		"abcdefghijklmnopqrstuvwxyzabcdefghijklmn",		"abcdefghijklmnopqrstuvwxyzabcdefghijklmO",		"commit/abcdefd",		"abcd3ef...defabcd",	} 	for _, testCase := range trueTestCases {		assert.True(t, hashCurrentPattern.MatchString(testCase))	}	for _, testCase := range falseTestCases {		assert.False(t, hashCurrentPattern.MatchString(testCase))	}} func TestRegExp_anySHA1Pattern(t *testing.T) {	testCases := map[string][]string{		"https://github.com/jquery/jquery/blob/a644101ed04d0beacea864ce805e0c4f86ba1cd1/test/unit/event.js#L2703": {			"jquery/jquery/blob",

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