Add asserts for testing and add test for 'for' loops

tests/assert.js

@@ -0,0 +1,42 @@
+// Copyright 2014 Samsung Electronics Co., Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+function assertTrue (what) {
+	if (what !== true)
+		exit (1);
+}
+
+function assertFalse (what) {
+	if (what !== false)
+		exit (1);
+}
+
+function assertNull (what) {
+	if (what !== null)
+		exit (1);
+}
+
+function assertNotNull (what) {
+	if (what === null)
+		exit (1);
+}
+
+function assertEquals (arg1, arg2) {
+	if (arg1 !== arg2)
+		exit (1);
+}
+
+function assertUnreachable () {
+	exit (1);
+}

tests/jerry/for.js

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+// Copyright 2014 Samsung Electronics Co., Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+var i = 0;
+for (; i < 100; i++) {}
+assertEquals (i, 100);
+
+for (var j = 0; j < 100; j++) {}
+assertEquals (i, 100);
+
+for (i = 0;;) {
+	if (i == 100) {
+		break;
+		assertUnreachable ();
+	}
+	i++;
+}
+assertEquals (i, 100);
+
+for (i = 0; i < 10; i++) {
+	for (j = 0; j < 10; j++) {}
+}
+assertEquals (i, 100);
+assertEquals (j, 100);