add traceur test suite

test/fixtures/traceur/ArrayComprehension/Simple.js

@@ -0,0 +1,32 @@
+// Options: --array-comprehension
+
+function* range() {
+  for (var i = 0; i < 5; i++) {
+    yield i;
+  }
+}
+
+var array = [for (x of [0, 1, 2, 3]) x];
+assertArrayEquals([0, 1, 2, 3], array);
+
+var array2 = [for (x of [0, 1, 2]) for (y of [0, 1, 2]) x + '' + y];
+assertArrayEquals(['00', '01', '02', '10', '11', '12', '20', '21', '22'],
+             array2);
+
+var array3 = [
+    for (x of [0, 1, 2, 3, 4])
+      for (y of range())
+        if (x === y)
+          x + '' + y];
+assertArrayEquals(['00', '11', '22', '33', '44'], array3);
+
+// Ensure this works as expression statement
+[for (testVar of []) testVar];
+
+var array4 = [
+  for (x of range())
+    if (x % 2 === 0)
+      for (y of range())
+        if (y % 2 === 1)
+          x + '' + y];
+assertArrayEquals(['01', '03', '21', '23', '41', '43'], array4);