[webvtt/test] Testcase for webvtt tags

webvtt_internal_test.go

@@ -96,39 +96,39 @@ func TestCueVoiceSpanRegex(t *testing.T) {
 	}{
 		{
 			give: `<v 中文> this is the content</v>`,
-			want: ` 中文`,
+			want: `中文`,
 		},
 		{
 			give: `<v 中文> this is the content`,
-			want: ` 中文`,
+			want: `中文`,
 		},
 		{
 			give: `<v.abc 中文> this is the content</v>`,
-			want: ` 中文`,
+			want: `中文`,
 		},
 		{
 			give: `<v.jp 言語の> this is the content`,
-			want: ` 言語の`,
+			want: `言語の`,
 		},
 		{
 			give: `<v.ko 언어> this is the content`,
-			want: ` 언어`,
+			want: `언어`,
 		},
 		{
 			give: `<v foo bar> this is the content`,
-			want: ` foo bar`,
+			want: `foo bar`,
 		},
 		{
 			give: `<v هذا عربي> this is the content`,
-			want: ` هذا عربي`,
+			want: `هذا عربي`,
 		},
 	}
 
 	for _, tt := range tests {
 		t.Run(tt.want, func(t *testing.T) {
-			results := webVTTRegexpStartTag.FindStringSubmatch(tt.give)
-			assert.True(t, len(results) == 4)
-			assert.Equal(t, tt.want, results[3])
+			results := webVTTRegexpTag.FindStringSubmatch(tt.give)
+			assert.True(t, len(results) == 5)
+			assert.Equal(t, tt.want, results[4])
 		})
 	}
 }

webvtt_test.go

@@ -162,3 +162,46 @@ Sentence with an & in the middle
 Sentence with an < in the middle
 `, b.String())
 }
+
+func TestWebVTTTags(t *testing.T) {
+	testData := `WEBVTT
+
+	00:01:00.000 --> 00:02:00.000
+	<u><i>Italic with underline text</i></u> some extra
+
+	00:02:00.000 --> 00:03:00.000
+	<lang en>English here</lang> <c.yellow.bg_blue>Yellow text on blue background</c>
+
+	00:03:00.000 --> 00:04:00.000
+	<v Joe><c.red><i>Joe's words are red in italic</i></c>
+
+	00:04:00.000 --> 00:05:00.000
+	<customed_tag.class1.class2>Text here</customed_tag>`
+
+	s, err := astisub.ReadFromWebVTT(strings.NewReader(testData))
+	require.NoError(t, err)
+
+	require.Len(t, s.Items, 4)
+
+	b := &bytes.Buffer{}
+	err = s.WriteToWebVTT(b)
+	require.NoError(t, err)
+	require.Equal(t, `WEBVTT
+
+1
+00:01:00.000 --> 00:02:00.000
+<u><i>Italic with underline text</i></u> some extra
+
+2
+00:02:00.000 --> 00:03:00.000
+<lang en>English here</lang> <c.yellow.bg_blue>Yellow text on blue background</c>
+
+3
+00:03:00.000 --> 00:04:00.000
+<v Joe><c.red><i>Joe's words are red in italic</i></c>
+
+4
+00:04:00.000 --> 00:05:00.000
+<customed_tag.class1.class2>Text here</customed_tag>
+`, b.String())
+}