Compare :lang value case-insensitive in ASCII range

Source/wtf/text/WTFStringTest.cpp

 /*
  * Copyright (C) 2012 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 298 matching lines @@
     for (size_t i = 0; i < sizeof(testDataList) / sizeof(testDataList[0]); ++i) {
         const char* expected = testDataList[i].expected;
         String source = String::fromUTF8(testDataList[i].source);
         for (size_t j = 0; j < testDataList[i].localeListLength; ++j) {
             const char* locale = testDataList[i].localeList[j];
             EXPECT_STREQ(expected, source.lower(locale).utf8().data()) << testDataList[i].sourceDescription << "; locale=" << locale;
         }
     }
 }
 
+TEST(WTF, StartsWithIgnoringASCIICase)
+{
+    String allASCII("LINK");
+    String allASCIILowerCase("link");
+    ASSERT_TRUE(startsWithIgnoringASCIICase(allASCII, allASCIILowerCase));

[tkent, 2015/05/13 01:07:55]

This should be EXPECT_TRUE(), not ASSERT_TRUE().
Same for the following ASSERT_*().

+    String allASCIIMixedCase("lInK");
+    ASSERT_TRUE(startsWithIgnoringASCIICase(allASCII, allASCIIMixedCase));
+    String allASCIIDifferent("foo");
+    ASSERT_FALSE(startsWithIgnoringASCIICase(allASCII, allASCIIDifferent));
+    String nonASCII = String::fromUTF8("LIN\xE2\x84\xAA");
+    ASSERT_FALSE(startsWithIgnoringASCIICase(allASCII, nonASCII));
+    ASSERT_TRUE(startsWithIgnoringASCIICase(allASCII, nonASCII.lower()));
+
+    ASSERT_FALSE(startsWithIgnoringASCIICase(nonASCII, allASCII));
+    ASSERT_FALSE(startsWithIgnoringASCIICase(nonASCII, allASCIILowerCase));
+    ASSERT_FALSE(startsWithIgnoringASCIICase(nonASCII, allASCIIMixedCase));
+    ASSERT_FALSE(startsWithIgnoringASCIICase(nonASCII, allASCIIDifferent));
+}
+
 } // namespace