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Document, that the second part of a decompose() wouldn't decompose()

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This is not directly documented in Unicode, or I couldn't find it,
but the test I just added confirms that it is currently the case.
This commit is contained in:
Behdad Esfahbod
2011-07-14 16:26:58 -04:00
parent f4cf6c3db0
commit 89a5d17d58
2 changed files with 23 additions and 0 deletions
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16
glib/tests/unicode.c
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@@ -525,6 +525,21 @@ test_canonical_decomposition (void)
TEST2 (0xCE20, 0x110E, 0x1173);
}
static void
test_decompose_tail (void)
{
gunichar ch, a, b, c, d;
/* Test that whenever a char ch decomposes into a and b, b itself
* won't decompose any further. */
for (ch = 0; ch < 0x110000; ch++)
if (g_unichar_decompose (ch, &a, &b))
g_assert (!g_unichar_decompose (b, &c, &d));
else
g_assert (a == ch && b == 0);
}
int
main (int argc,
char *argv[])
@@ -543,6 +558,7 @@ main (int argc,
g_test_add_func ("/unicode/compose", test_compose);
g_test_add_func ("/unicode/decompose", test_decompose);
g_test_add_func ("/unicode/canonical-decomposition", test_canonical_decomposition);
g_test_add_func ("/unicode/decompose-tail", test_decompose_tail);
return g_test_run();
}