Add fourslash tests to cover external module case

Author: Yui T

tests/baselines/reference/getEmitOutputExternalModule.baseline

@@ -0,0 +1,9 @@
+EmitOutputStatus : Succeeded
+Filename : declSingleFile.js
+var x = 5;
+var Bar = (function () {
+    function Bar() {
+    }
+    return Bar;
+})();
+

tests/baselines/reference/getEmitOutputExternalModule2.baseline

@@ -0,0 +1,15 @@
+EmitOutputStatus : JSGeneratedWithSemanticErrors
+Filename : declSingleFile.js
+var x = 5;
+var Bar = (function () {
+    function Bar() {
+    }
+    return Bar;
+})();
+var x = "world";
+var Bar2 = (function () {
+    function Bar2() {
+    }
+    return Bar2;
+})();
+

tests/baselines/reference/getEmitOutputSingleFile2.baseline

@@ -5,28 +5,4 @@ exports.bar = "hello world";
 Filename : tests/cases/fourslash/inputFile3.d.ts
 export declare var foo: number;
 export declare var bar: string;
-Filename : declSingleFile.js
-var x = 5;
-var Bar = (function () {
-    function Bar() {
-    }
-    return Bar;
-})();
-var x1 = "hello world";
-var Foo = (function () {
-    function Foo() {
-    }
-    return Foo;
-})();
-Filename : declSingleFile.d.ts
-declare var x: number;
-declare class Bar {
-    x: string;
-    y: number;
-}
-declare var x1: string;
-declare class Foo {
-    x: string;
-    y: number;
-}
 

tests/cases/fourslash/getEmitOutputExternalModule.ts

@@ -0,0 +1,19 @@
+/// <reference path="fourslash.ts" />
+
+// @BaselineFile: getEmitOutputExternalModule.baseline
+// @out: declSingleFile.js
+
+// @Filename: inputFile1.ts
+// @emitThisFile: true
+//// var x: number = 5;
+//// class Bar {
+////    x : string;
+////    y : number
+//// }
+
+// @Filename: inputFile2.ts
+//// export module M {
+//// 	class C {c}
+//// }
+
+verify.baselineGetEmitOutput();

tests/cases/fourslash/getEmitOutputExternalModule2.ts

@@ -0,0 +1,26 @@
+/// <reference path="fourslash.ts" />
+
+// @BaselineFile: getEmitOutputExternalModule2.baseline
+// @out: declSingleFile.js
+
+// @Filename: inputFile1.ts
+//// var x: number = 5;
+//// class Bar {
+////    x : string;
+////    y : number
+//// }
+
+// @Filename: inputFile2.ts
+// @emitThisFile: true
+//// var x: string = "world";
+//// class Bar2 {
+////    x : string;
+////    y : number
+//// }
+
+// @Filename: inputFile3.ts
+//// export module M {
+//// 	class C {c}
+//// }
+
+verify.baselineGetEmitOutput();