Version 2.5.2

test/mjsunit/string-case.js

Index: test/mjsunit/string-case.js
diff --git a/test/mjsunit/string-case.js b/test/mjsunit/string-case.js
index 13dcd3ea815615f6c2591eb9fcbbdf982147f4c9..283e703fc33d31df4a75944c7558c68eef7f2e64 100644
--- a/test/mjsunit/string-case.js
+++ b/test/mjsunit/string-case.js
@@ -25,4 +25,47 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+// Flags: --random-seed=17
+
 assertEquals("ΚΟΣΜΟΣ ΚΟΣΜΟΣ".toLowerCase(), "κοσμος κοσμος");
+
+var A_CODE = "A".charCodeAt(0);
+var Z_CODE = "Z".charCodeAt(0);
+var a_CODE = "a".charCodeAt(0);
+var z_CODE = "z".charCodeAt(0);
+
+function charCodeToLower(charCode) {
+  if (A_CODE <= charCode && charCode <= Z_CODE) {
+    return charCode + a_CODE - A_CODE;
+  }
+  return charCode;
+}
+
+function charCodeToUpper(charCode) {
+  if (a_CODE <= charCode && charCode <= z_CODE) {
+    return charCode - (a_CODE - A_CODE);
+  }
+  return charCode;
+}
+
+function test(length) {
+  var str = "";
+  var strLower = "";
+  var strUpper = "";
+  for (var i = 0; i < length; i++) {
+    var c = Math.round(0x7f * Math.random());
+    str += String.fromCharCode(c);
+    strLower += String.fromCharCode(charCodeToLower(c));
+    strUpper += String.fromCharCode(charCodeToUpper(c));
+  }
+  assertEquals(strLower, str.toLowerCase());
+  assertEquals(strUpper, str.toUpperCase());
+}
+
+for (var i = 1; i <= 128; i <<= 1); {
+  for (var j = 0; j < 8; j++) {
+    for (var k = 0; k < 3; k++) {
+      test(i + j);
+    }
+  }
+}