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tests: Add some more UTF-8 validation corner cases
The move to c-utf8 for validation has exposed a few new branches where our existing (fairly comprehensive) UTF-8 validation test suite didn’t check things. Add unit tests for those branches, so we keep code coverage. I’ve validated (with an independent UTF-8 decoder) that the test vectors are correctly marked as valid/invalid in the test data (so the tests aren’t just blindly coded to match the behaviour of the new validator code). Signed-off-by: Philip Withnall <pwithnall@gnome.org> Helps: #3481
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@ -81,8 +81,9 @@ static Test global_test[] = {
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{ "\xed\x9f\xbf", -1, 3, TRUE },
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{ "\xee\x80\x80", -1, 3, TRUE },
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{ "\xef\xbf\xbd", -1, 3, TRUE },
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{ "\xf1\x80\x80\x80", -1, 4, TRUE },
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{ "\xf4\x8f\xbf\xbf", -1, 4, TRUE },
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{ "\xf4\x90\x80\x80", -1, 0, FALSE },
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{ "\xf4\x90\x80\x80", -1, 0, FALSE }, /* bigger than U+10FFFF */
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/* malformed sequences */
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/* continuation bytes */
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{ "\x80", -1, 0, FALSE },
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@ -94,6 +95,18 @@ static Test global_test[] = {
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{ "\x80\xbf\x80\xbf\x80", -1, 0, FALSE },
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{ "\x80\xbf\x80\xbf\x80\xbf", -1, 0, FALSE },
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{ "\x80\xbf\x80\xbf\x80\xbf\x80", -1, 0, FALSE },
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{ "\xe0\xa0\x20", -1, 0, FALSE },
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{ "\xe1\x80\x20", -1, 0, FALSE },
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{ "\xed\x80\x20", -1, 0, FALSE },
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{ "\xf0\xc0\x80\x80", -1, 0, FALSE },
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{ "\xf0\x90\x20\x80", -1, 0, FALSE },
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{ "\xf0\x90\x80\x20", -1, 0, FALSE },
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{ "\xf1\x20\x80\x80", -1, 0, FALSE },
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{ "\xf1\x80\x20\x80", -1, 0, FALSE },
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{ "\xf1\x80\x80\x20", -1, 0, FALSE },
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{ "\xf4\x7f\x80\x80", -1, 0, FALSE },
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{ "\xf4\x80\x20\x80", -1, 0, FALSE },
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{ "\xf4\x80\x80\x20", -1, 0, FALSE },
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/* all possible continuation byte */
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{ "\x80", -1, 0, FALSE },
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@ -253,6 +266,9 @@ static Test global_test[] = {
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{ "\x20\xf0\x80\x80\x80\x20", -1, 1, FALSE },
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{ "\x20\xf8\x80\x80\x80\x80\x20", -1, 1, FALSE },
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{ "\x20\xfc\x80\x80\x80\x80\x80\x20", -1, 1, FALSE },
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{ "\xe0\x9f\x80", -1, 0, FALSE },
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{ "\xe0\xc0\x80", -1, 0, FALSE },
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{ "\xf0\x8f\x80\x80", -1, 0, FALSE },
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/* illegal code positions */
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{ "\x20\xed\xa0\x80\x20", -1, 1, FALSE },
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{ "\x20\xed\xad\xbf\x20", -1, 1, FALSE },
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@ -270,6 +286,14 @@ static Test global_test[] = {
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{ "\x20\xed\xaf\xbf\xed\xb0\x80\x20", -1, 1, FALSE },
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{ "\x20\xed\xaf\xbf\xed\xbf\xbf\x20", -1, 1, FALSE },
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/* ASCII boundaries */
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{ "\x00", 1, 0, FALSE },
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{ "\x01", -1, 1, TRUE },
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{ "\x02", -1, 1, TRUE },
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{ "\x7d", -1, 1, TRUE },
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{ "\x7e", -1, 1, TRUE },
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{ "\x7f", -1, 1, TRUE },
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{ NULL, 0, 0, 0 }
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};
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