Migrated several tests from blink to V8 repository.

test/webkit/regexp-char-insensitive.js

Index: test/webkit/regexp-char-insensitive.js
diff --git a/test/webkit/concat-while-having-a-bad-time.js b/test/webkit/regexp-char-insensitive.js
similarity index 63%
copy from test/webkit/concat-while-having-a-bad-time.js
copy to test/webkit/regexp-char-insensitive.js
index dfda1e08a0b36194b787a44ee12a9693acd8aeaf..14a10f686d46db6057b9a9e7312b55ca99570f39 100644
--- a/test/webkit/concat-while-having-a-bad-time.js
+++ b/test/webkit/regexp-char-insensitive.js
@@ -22,10 +22,26 @@
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 description(
-"Tests the behavior of Array.prototype.concat while the array is having a bad time due to one of the elements we are concatenating."
+"This test checks the case-insensitive matching of character literals."
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
+shouldBeTrue("/\u00E5/i.test('/\u00E5/')");
+shouldBeTrue("/\u00E5/i.test('/\u00C5/')");
+shouldBeTrue("/\u00C5/i.test('/\u00E5/')");
+shouldBeTrue("/\u00C5/i.test('/\u00C5/')");
 
+shouldBeFalse("/\u00E5/i.test('P')");
+shouldBeFalse("/\u00E5/i.test('PASS')");
+shouldBeFalse("/\u00C5/i.test('P')");
+shouldBeFalse("/\u00C5/i.test('PASS')");
 
+shouldBeNull("'PASS'.match(/\u00C5/i)");
+shouldBeNull("'PASS'.match(/\u00C5/i)");
+
+shouldBe("'PAS\u00E5'.replace(/\u00E5/ig, 'S')", "'PASS'");
+shouldBe("'PAS\u00E5'.replace(/\u00C5/ig, 'S')", "'PASS'");
+shouldBe("'PAS\u00C5'.replace(/\u00E5/ig, 'S')", "'PASS'");
+shouldBe("'PAS\u00C5'.replace(/\u00C5/ig, 'S')", "'PASS'");
+
+shouldBe("'PASS'.replace(/\u00E5/ig, '%C3%A5')", "'PASS'");
+shouldBe("'PASS'.replace(/\u00C5/ig, '%C3%A5')", "'PASS'");