Add tests for __metadata and __param

Author: mhegazy

src/harness/harness.ts

@@ -990,8 +990,12 @@ module Harness {
                             }
                             break;
 
+                        case 'emitdecoratormetadata':
+                            options.emitDecoratorMetadata = setting.value === 'true';
+                            break;
+
                         case 'noemithelpers':
-                            options.noEmitHelpers = !!setting.value;
+                            options.noEmitHelpers = setting.value === 'true';
                             break;
 
                         case 'noemitonerror':
@@ -1486,7 +1490,7 @@ module Harness {
             "errortruncation", "usecasesensitivefilenames", "preserveconstenums",
             "includebuiltfile", "suppressimplicitanyindexerrors", "stripinternal",
             "separatecompilation", "inlinesourcemap", "maproot", "sourceroot",
-            "inlinesources"];
+            "inlinesources", "emitdecoratormetadata"];
 
         function extractCompilerSettings(content: string): CompilerSetting[] {
 

tests/baselines/reference/noEmitHelpers2.js

@@ -3,15 +3,20 @@
 function decorator() { }
 
 @decorator
-class A { }
+class A {
+    constructor(a: number, @decorator b: string) {
+    }
+}
 
 //// [noEmitHelpers2.js]
 function decorator() { }
 var A = (function () {
-    function A() {
+    function A(a, b) {
     }
     A = __decorate([
-        decorator
+        decorator,
+        __param(1, decorator), 
+        __metadata('design:paramtypes', [Number, String])
     ], A);
     return A;
 })();

tests/baselines/reference/noEmitHelpers2.symbols

@@ -0,0 +1,17 @@
+=== tests/cases/compiler/noEmitHelpers2.ts ===
+
+function decorator() { }
+>decorator : Symbol(decorator, Decl(noEmitHelpers2.ts, 0, 0))
+
+@decorator
+>decorator : Symbol(decorator, Decl(noEmitHelpers2.ts, 0, 0))
+
+class A {
+>A : Symbol(A, Decl(noEmitHelpers2.ts, 1, 24))
+
+    constructor(a: number, @decorator b: string) {
+>a : Symbol(a, Decl(noEmitHelpers2.ts, 5, 16))
+>decorator : Symbol(decorator, Decl(noEmitHelpers2.ts, 0, 0))
+>b : Symbol(b, Decl(noEmitHelpers2.ts, 5, 26))
+    }
+}

tests/baselines/reference/noEmitHelpers2.types

@@ -0,0 +1,17 @@
+=== tests/cases/compiler/noEmitHelpers2.ts ===
+
+function decorator() { }
+>decorator : () => void
+
+@decorator
+>decorator : () => void
+
+class A {
+>A : A
+
+    constructor(a: number, @decorator b: string) {
+>a : number
+>decorator : () => void
+>b : string
+    }
+}

tests/cases/compiler/noEmitHelpers2.ts

@@ -1,10 +1,11 @@
 // @noemithelpers: true
+// @emitdecoratormetadata: true
 // @target: es5
 
 function decorator() { }
 
 @decorator
 class A {
-    constructor(a: number, b: string) {
+    constructor(a: number, @decorator b: string) {
     }
 }