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78 lines
2.6 KiB
Markdown
78 lines
2.6 KiB
Markdown
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CSS tests require a specific naming convention. This is also a good,
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but not mandatory, style to use for other tests.
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## File Name
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The file name format is ```test-topic-###.ext``` where `test-topic`
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somewhat describes the test, `###` is a zero-filled number used to
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keep the file names unique, and `ext` is typically either
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`html` or `xht`.
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Test filenames must also be globally unique. There cannot be multiple
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tests with the same filename, even if they are in different parent
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directories. For example, having both
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`/css-values-3/foo-001.html` and `/css-variables-1/foo-001.html`
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would not be allowed. This restriction is in place because some tools
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that use the CSS tests dump all of the test files into a single
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directory, which would cause all but one of the tests with the same
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filename to be clobbered and accidentally skipped.
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### test-topic
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`test-topic` is a short identifier that describes the test. The
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`test-topic` should avoid conjunctions, articles, and prepositions.
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It is a file name, not an English phrase: it should be as concise
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as possible.
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Examples:
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```
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margin-collapsing-###.ext
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border-solid-###.ext
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float-clear-###.ext
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```
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### `###`
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`###` is a zero-filled number used to keep the file names unique when
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files have the same test-topic name.
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Note: The number format is limited to 999 cases. If you go over this
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number it is recommended that you reevaluate your test-topic name.
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For example, in the case of margin-collapsing there are multiple
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cases so each case could have the same test-topic but different
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numbers:
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```
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margin-collapsing-001.xht
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margin-collapsing-002.xht
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margin-collapsing-003.xht
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```
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There may also be a letter affixed after the number, which can be
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used to indicate variants of a test.
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For example, ```float-wrap-001l.xht``` and ```float-wrap-001r.xht```
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might be left and right variants of a float test.
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If tests using both the unsuffixed number and the suffixed number
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exist, the suffixed tests must be subsets of the unsuffixed test.
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For example, if ```bidi-004``` and ```bidi-004a``` both exist,
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```bidi-004a``` must be a subset of ```bidi-004```.
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If the unsuffixed test is strictly the union of the suffixed tests,
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i.e. covers all aspects of the suffixed tests (such that a user agent
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passing the unsuffixed test will, by design, pass all the suffixed
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tests), then the unsuffixed test should be marked with the combo flag.
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If ```bidi-004a``` and ```bidi-004b``` cover all aspects of ```bidi-
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004``` (except their interaction), then bidi-004 should be given the
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combo flag.
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### ext
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`ext` is the file extension or format of the file.
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For XHTML test files, it should be `xht`.
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For HTML (non-XML) test files, it should be `html`.
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