package htmlformat
import (
"strings"
"testing"
"github.com/google/go-cmp/cmp"
)
func TestFormat(t *testing.T) {
tests := []struct {
name string
input string
expected string
}{
{
name: "missing closing tags are inserted",
input: ``,
expected: `
`,
},
{
name: "html attribute escaping is normalized",
input: ` A B `,
expected: `
A
B
`,
},
{
name: "bare ampersands are escaped",
input: ` A B `,
expected: `
A
B
`,
},
{
name: "html elements are indented",
input: ` A B `,
expected: `
A
B
`,
},
{
name: "text fragments are supported",
input: `test 123`,
expected: `test 123` + "\n",
},
{
name: "script tags are only indented",
input: ``,
expected: `` + "\n",
},
{
name: "phrasing content element children are kept on the same line, including punctuation",
input: ``,
expected: `
`,
},
{
name: "style content is indented consistently",
input: ``,
expected: `
`,
},
{
name: "space after text node with punctuation is preserved",
input: `Link . Another
`,
expected: `
Link .
Another
`,
},
{
name: "spaces are not added around elements ending with punctuation",
input: "19:00 –20:00
",
expected: `
19:00 –20:00
`,
},
{
name: "HTML entities in pre/code blocks are preserved",
input: `<tab>
<tab>
`,
},
{
name: "multiple HTML entities in pre blocks are preserved",
input: `<html> & "quotes" `,
expected: `<html> & "quotes"
`,
},
{
name: "HTML entities in nested code within pre are preserved",
input: `Some text <tag> more text `,
expected: `
Some text <tag> more text
`,
},
{
name: "ampersands in pre blocks are preserved",
input: `npm install && npm test `,
expected: `npm install && npm test
`,
},
{
name: "complex HTML entities in code blocks are preserved",
input: `const html = "<div class="test">Hello & goodbye</div>";
const html = "<div class="test">Hello & goodbye</div>";
`,
},
{
name: "HTML entities in code blocks (no pre) are preserved",
input: `const html = "<div class="test">Hello & goodbye</div>";`,
expected: `const html = "<div class="test">Hello & goodbye</div>";
`,
},
}
for _, test := range tests {
test := test
t.Run(test.name, func(t *testing.T) {
t.Parallel()
r := strings.NewReader(test.input)
w := new(strings.Builder)
if err := Fragment(w, r); err != nil {
t.Fatalf("failed to format: %v", err)
}
if diff := cmp.Diff(test.expected, w.String()); diff != "" {
t.Error(diff)
}
})
}
}
func TestFormatDocument(t *testing.T) {
tests := []struct {
name string
input string
expected string
}{
{
name: "HTML5 doctype is preserved",
input: "",
expected: "\n\n \n \n \n \n\n",
},
}
for _, test := range tests {
test := test
t.Run(test.name, func(t *testing.T) {
t.Parallel()
r := strings.NewReader(test.input)
w := new(strings.Builder)
if err := Document(w, r); err != nil {
t.Fatalf("failed to format: %v", err)
}
if diff := cmp.Diff(test.expected, w.String()); diff != "" {
t.Error(diff)
}
})
}
}