Adds test infrastructure for JS optimizer. Adds simple tests

js/js.translator/testData/js-optimizer/temporary-variable/assignment.optimized.js

@@ -0,0 +1,10 @@
+function test(a, b, c) {
+    return a + b + c;
+}
+
+function box() {
+    var result = test(2, 3, 4);
+    if (result != 9) return "fail: " + result;
+
+    return "OK"
+}

js/js.translator/testData/js-optimizer/temporary-variable/assignment.original.js

@@ -0,0 +1,12 @@
+function test(a, b, c) {
+    var $tmp;
+    $tmp = a + b;
+    return $tmp + c;
+}
+
+function box() {
+    var result = test(2, 3, 4);
+    if (result != 9) return "fail: " + result;
+
+    return "OK"
+}

js/js.translator/testData/js-optimizer/temporary-variable/declaration.optimized.js

@@ -0,0 +1,10 @@
+function test(a, b, c) {
+    return a + b + c;
+}
+
+function box() {
+    var result = test(2, 3, 4);
+    if (result != 9) return "fail: " + result;
+
+    return "OK"
+}

js/js.translator/testData/js-optimizer/temporary-variable/declaration.original.js

@@ -0,0 +1,11 @@
+function test(a, b, c) {
+    var $tmp = a + b;
+    return $tmp + c;
+}
+
+function box() {
+    var result = test(2, 3, 4);
+    if (result != 9) return "fail: " + result;
+
+    return "OK"
+}