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highlight_test.go
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highlight_test.go
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package highlight
import (
"fmt"
"strings"
"testing"
"github.com/d4l3k/go-highlight/registry"
)
type highlightCase struct {
in, out string
}
func testCases(t *testing.T, lang string, cases []highlightCase) {
for i, c := range cases {
resp, err := highlightTest(lang, []byte(c.in))
if err != nil {
t.Error(err)
}
if string(resp) != c.out {
t.Errorf("%d. Highlight(%q, %q)\n = %q;\nnot %q", i, lang, c.in, resp, c.out)
}
}
}
func TestHighlight(t *testing.T) {
cases := []highlightCase{
{
`package main`,
`<keyword>package</keyword> main`,
},
{
`// hello
`,
`<comment>// hello</comment>
`,
},
{
`/* hello */
`,
`<comment>/* hello */</comment>
`,
},
{
`var testfunc`,
`<keyword>var</keyword> testfunc`,
},
{
`=append()`,
`=<built_in>append</built_in>()`,
},
{
`
func main() {
log.Println("duck")
}`,
`
<keyword>func</keyword> main() {
log.Println(<string>"duck"</string>)
}`,
},
{
`/* NOTE: test */`,
`<comment>/* </comment><doctag>NOTE:</doctag><comment> test */</comment>`,
},
}
testCases(t, "go", cases)
}
func TestHighlightCaseInsensitive(t *testing.T) {
insensitiveCases := []highlightCase{
{
`If ($True -eq $True) { "duck" }`,
`<keyword>If</keyword> (<variable>$True</variable> -eq <variable>$True</variable>) { <string>"duck"</string> }`,
},
{
`iF ($True -eq $True) { "duck" }`,
`<keyword>iF</keyword> (<variable>$True</variable> -eq <variable>$True</variable>) { <string>"duck"</string> }`,
},
}
testCases(t, "powershell", insensitiveCases)
sensitiveCases := []highlightCase{
{
`package main`,
`<keyword>package</keyword> main`,
},
{
`PACKAGE main`,
`PACKAGE main`,
},
}
testCases(t, "go", sensitiveCases)
}
func TestHighlightMultiLine(t *testing.T) {
cases := []highlightCase{
{
"`\n`",
"<string>`\n`</string>",
},
}
testCases(t, "go", cases)
}
func TestBeginKeywords(t *testing.T) {
cases := []highlightCase{
{
`select * from duck;`,
`<keyword>select</keyword> * <keyword>from</keyword> duck;`,
},
}
testCases(t, "sql", cases)
}
func TestAliases(t *testing.T) {
cases := []highlightCase{
{
`package main`,
`<keyword>package</keyword> main`,
},
}
for _, lang := range []string{"go", "golang"} {
testCases(t, lang, cases)
}
}
func TestLanguages(t *testing.T) {
code := `package main`
for _, lang := range registry.Languages() {
_, err := highlightTest(lang, []byte(code))
if err != nil {
t.Errorf("%s: error: %v", lang, err)
}
}
}
func TestEmptyHighlights(t *testing.T) {
cases := []highlightCase{
{
`<head><!-- foo --></head>`,
`<section><head></section><section><!-- foo --></section><section></head></section>`,
},
}
testCases(t, "apache", cases)
}
func TestSubLanguage(t *testing.T) {
// We want to first test that the standalone behavior is correct.
casesJS := []highlightCase{
{
`
"use strict";
const foo = 10;
`,
`<meta>
"use strict"</meta>;
<keyword>const</keyword> foo = <number>10</number>;
`,
},
}
testCases(t, "javascript", casesJS)
// Then test that the behavior is the same when a sub language.
casesHTML := []highlightCase{
{
`<script>
"use strict";
const foo = 10;
</script>`,
`<tag><script></tag><meta>
"use strict"</meta>;
<keyword>const</keyword> foo = <number>10</number>;
<tag></script></tag>`,
},
}
testCases(t, "html", casesHTML)
}
func BenchmarkHighlight(b *testing.B) {
n := []int{10, 100, 1000, 10000, 100000, 1000000}
for _, n := range n {
b.Run(fmt.Sprintf("BenchmarkHighlight%dBytes", n), func(b *testing.B) {
code := strings.Repeat(" ", n)
b.ResetTimer()
for i := 0; i < b.N; i++ {
if _, err := HTML("go", []byte(code)); err != nil {
b.Error(err)
}
}
})
}
}