| Test Case Id | Description | Example that should pass | file | Example that should fail | Effect | file | Creation Note | Comments |
| TC000 | empty file | -- | -- | empty file | file not recognized as webvtt | tc000_empty.vtt | cat | |
| TC001 | UTF-8 File | file with UTF-8 encoded characters (use iconv) - example has Japanese characters | tc001_utf8.vtt | file with characters in different encoding (use iconv) - example has japanese characters in ISO-2022-JP-3 | file not recognized as webvtt | tc001_iso2022jp3.vtt | TexMate | This file still works fine with annacc's WebKit implementation (doesn't look pretty, but converts successfully) - is probably ok: browsers are allowed to be more tolerant than the spec |
| TC002 | UTF-8 File with BOM | UTF-8 file in Japanese with BOM at start | tc002_bom.vtt | -- | -- | python: import codecs; file = open("bom.txt", "w"); file.write(codecs.BOM_UTF8); file.close() | TC003 | Line terminator: \r, \n or \r\n | file in UTF-8 with all three line terminators; file with no line terminator at the end | tc003_newlines.vtt; tc003_nonewlineateof.vtt | -- | -- | python: file = open("newline.txt", "w"); file.write("WEBVTT\n"); file.write("\r"); file.write("1\r\n"); file.write("00:00:00.000 --> 00:00:30.500\r"); file.write("Bear is Coming!!!!!\r\n"); file.close(); |
| TC004 | Magic File Header | WEBVTT header plus any rubbish after it, then 2 newlines; WEBVTT FILE header | tc004_webvttfile.vtt; tc004_webvttrubbish.vtt | AWEBVTT header to break magic | file not recognized as webvtt | tc004_nowebvtt.vtt | TextMate | |
| TC008 | Random content below file magic header | Any text in the line directly below the WEBVTT line followed by 2 line terminators | tc008_metadataarea.vtt | Faulty cues, which can later be used for default styling and settings but are for now ignored | cues ignored | tc008_defaultstyles.vtt | TextMate | |
| TC005 | with optional cue identifier | random text as cue identifiers, including duplicate ids, ids with spaces, and suparts of --> | tc005_cueid.vtt | cue identifier that contains --> | cues ignored | tc005_cueiderror.vtt | TextMate | |
| TC006 | cue without identifier | no cue identifier | id that is only --> | cues ignored | tc006_cuenoiderror.vtt | TextMate | seems like tc005 and tc006 can be combined (testing the same stuff) - one has an identifier, the other doesn't - I'll keep them separate - ok makes sense | |
| TC007 | cue timing without optional hours | mm:ss.msmsms --> mm:ss.msmsms, space and tab separators | tc007_timingsnohour.vtt | cue timing without hours, but erroneously: wrong number of digits, minutes, or seconds greate than 59, characters other than digits | cues ignored | tc007_timingsnohourerror.vtt | TextMate | |
| TC009 | cue timing with hours | hh...:mm:ss.msmsms --> hh...:mm:ss.msmsms | tc009_timingshour.vtt | cue timing with hours, but erroneously: wrong number of digits, minutes, or seconds greate than 59, characters other than digits | cues ignored | tc009_timingshourerror.vtt | TextMate | |
| TC010 | -- | -- | cue without time spec | cues ignored | tc010_notimings.vtt | TextMate | ||
| TC011 | cues separated by one or more blank line | cues with 2, 3, 4 newlines (\r and \n) | tc011_cues.vtt | cues not separated | one cue only | tc011_cuesnosep.vtt | cat to the end of tc003_newlines.vtt | |
| TC012 | -- | -- | cues temporally out of order | cues out of order are ignored | tc012_cuseoutoforder.vtt | TextMate | ||
| TC013 | cue with WebVTT setting | cues with tab and space separated settings | tc013_settings.vtt | settings separated with non-blank characters | cues are ignored | tc013_settingsbadsep.vtt | TextMate | |
| TC014 | cues with alignment settings | cues should align start, middle, end | tc014_alignment.vtt tc014_alignment_ltr.vtt | invalid alignment values | setting is ignored | tc014_alignmentbad.vtt | TextMate, translation copied from Google translate | |
| TC015 | cues with text positioning | cues should position at different horizontal positions | tc015_positioning.vtt tc015_positioning_ltr.vtt | invalid positioning values | positioning is ignored | tc015_positioningbad.vtt | TextMate, translation copied from Google translate | |
| TC016 | cues with alignment and text position settings | cues should position at different horizontal positions with different alignments | tc016_align_positioning.vtt | either one or both of positioning and alignment values are invalid | positioning and/or setting are ignored | tc016_align_positioningbad.vtt | TextMate | |
| TC017 | cues with line positioning | cues should position at different vertical positions | tc017_linepos.vtt | invalid positioning values | positioning is ignored | tc017_lineposbad.vtt | TextMate | |
| TC018 | cues with alignment, line and text position settings | cues should position at different horizontal and vertical positions with different alignments | tc018_align_text_linepos.vtt | one or more of line/text positioning and alignment values are invalid | text/line positioning and/or setting are ignored | tc018_align_text_lineposbad.vtt | TextMate | |
| TC019 | cue size settings | cues vertical size is changed exemplified by larger background area | tc019_cuesize.vtt | invalid cue sizes | cue size setting is ignored | tc019_cuesizebad.vtt | TextMate | |
| TC020 | cue size setting with alignment | cues align within the different box and wrap | tc020_cuesize_align.vtt | either size or alignment are invalid | size or alignment is ignored | tc020_cuesize_alignbad.vtt | TextMate | |
| TC021 | cue with vertical direction setting | cues should render vertically growing left-to-right or right-to-left | tc021_valign.vtt tc021_valign_ltr.vtt | invalid vertical direction setting | direction setting is ignored | tc021_valignbad.vtt | TextMate, translation copied from Google translate | |
| TC022 | cue content with escape characters | &, <, > are provided in escaped manner | tc022_entities.vtt | invalid use of &, < and > | parts of cue text are ignored, potentially whole cues scrambled | tc022_entitieswrong.vtt | TextMate | |
| TC023 | cue with <b>, <i>, <u>, <rt> and <ruby> tags | cue text fragments should render appropriately | tc023_markup.vtt | cue text has invalid markup of <b>, <i>, <u>, <rt> and <ruby> | markup that is wrong is ignored or has a bad effect on the remainder of the cue text | tc023_markupbad.vtt | TextMate | |
| TC024 | paint-on text in cues with <timestamp> markup | <time> markers reveal text successively | tc024_timestamp.vtt | cue text has invalid timestamp | invalid timestamps are ignored | tc024_timestampbad.vtt | TextMate | |
| TC025 | cues with class markup <c> | cue text fragment mapped to HTML <span> element with CSS classes | tc025_class.vtt | invalid class markup | invalid markup is ignored | tc025_classbad.vtt | TextMate | TC026 | cues with voice markup <v> | cue text fragment mapped to HTML <q> element with @title for annotation | tc026_voice.vtt | invalid voice markup | invalid markup is ignored | tc026_voicebad.vtt | TextMate |
| TC027 | -- | -- | -- | empty cues | empty cues are discarded | tc027_emptycue.vtt | TextMate | |
| TC028 | -- | -- | -- | cue with html markup that is not specified in webvtt; examples include <h1>, <p>, <ul>, <ol>, <li>, <a>, <video>, <img> | markup is discarded | tc028_unsupportedmarkup.vtt | TextMate |