Add decorator test for a decorator on a class expression.

Author: CyrusNajmabadi

tests/baselines/reference/classExpressionWithDecorator1.errors.txt

@@ -0,0 +1,10 @@
+tests/cases/compiler/classExpressionWithDecorator1.ts(1,9): error TS1109: Expression expected.
+tests/cases/compiler/classExpressionWithDecorator1.ts(1,10): error TS2304: Cannot find name 'decorate'.
+
+
+==== tests/cases/compiler/classExpressionWithDecorator1.ts (2 errors) ====
+    var v = @decorate class C { static p = 1 };
+            ~
+!!! error TS1109: Expression expected.
+             ~~~~~~~~
+!!! error TS2304: Cannot find name 'decorate'.

tests/baselines/reference/classExpressionWithDecorator1.js

@@ -0,0 +1,26 @@
+//// [classExpressionWithDecorator1.ts]
+var v = @decorate class C { static p = 1 };
+
+//// [classExpressionWithDecorator1.js]
+var __decorate = this.__decorate || function (decorators, target, key, value) {
+    var kind = typeof (arguments.length == 2 ? value = target : value);
+    for (var i = decorators.length - 1; i >= 0; --i) {
+        var decorator = decorators[i];
+        switch (kind) {
+            case "function": value = decorator(value) || value; break;
+            case "number": decorator(target, key, value); break;
+            case "undefined": decorator(target, key); break;
+            case "object": value = decorator(target, key, value) || value; break;
+        }
+    }
+    return value;
+};
+var v = ;
+var C = (function () {
+    function C() {
+    }
+    C.p = 1;
+    C = __decorate([decorate], C);
+    return C;
+})();
+;

tests/cases/compiler/classExpressionWithDecorator1.ts

@@ -0,0 +1 @@
+var v = @decorate class C { static p = 1 };