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

modules/highlight/lexerdetect_test.go

@@ -0,0 +1,74 @@
+// Copyright 2026 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package highlight
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestDetectChromaLexer(t *testing.T) {
+	globalVars().highlightMapping[".my-html"] = "HTML"
+	t.Cleanup(func() { delete(globalVars().highlightMapping, ".my-html") })
+
+	casesWithContent := []struct {
+		fileName string
+		language string
+		content  string
+		expected string
+	}{
+		{"test.v", "", "", "V"},
+		{"test.v", "any-lang-name", "", "V"},
+
+		{"any-file", "javascript", "", "JavaScript"},
+		{"any-file", "", "/* vim: set filetype=python */", "Python"},
+		{"any-file", "", "", "fallback"},
+
+		{"test.fs", "", "", "FSharp"},
+		{"test.fs", "F#", "", "FSharp"},
+		{"test.fs", "", "let x = 1", "FSharp"},
+
+		{"test.c", "", "", "C"},
+		{"test.C", "", "", "C++"},
+		{"OLD-CODE.PAS", "", "", "ObjectPascal"},
+		{"test.my-html", "", "", "HTML"},
+
+		{"a.php", "", "", "PHP"},
+		{"a.sql", "", "", "SQL"},
+		{"dhcpd.conf", "", "", "ISCdhcpd"},
+		{".env.my-production", "", "", "Bash"},
+
+		{"a.hcl", "", "", "HCL"}, // not the same as Chroma, enry detects "*.hcl" as "HCL"
+		{"a.hcl", "HCL", "", "HCL"},
+		{"a.hcl", "Terraform", "", "Terraform"},
+	}
+	for _, c := range casesWithContent {
+		lexer := detectChromaLexerWithAnalyze(c.fileName, c.language, []byte(c.content))
+		if assert.NotNil(t, lexer, "case: %+v", c) {
+			assert.Equal(t, c.expected, lexer.Config().Name, "case: %+v", c)
+		}
+	}
+
+	casesNameLang := []struct {
+		fileName string
+		language string
+		expected string
+		byLang   bool
+	}{
+		{"a.v", "", "V", false},
+		{"a.v", "V", "V", true},
+		{"a.v", "verilog", "verilog", true},
+		{"a.v", "any-lang-name", "V", false},
+
+		{"a.hcl", "", "Terraform", false}, // not the same as enry
+		{"a.hcl", "HCL", "HCL", true},
+		{"a.hcl", "Terraform", "Terraform", true},
+	}
+	for _, c := range casesNameLang {
+		lexer, byLang := detectChromaLexerByFileName(c.fileName, c.language)
+		assert.Equal(t, c.expected, lexer.Config().Name, "case: %+v", c)
+		assert.Equal(t, c.byLang, byLang, "case: %+v", c)
+	}
+}