Add new tests

Author: JsonFreeman

tests/cases/conformance/types/tuple/wideningTuples1.ts

@@ -0,0 +1,5 @@
+//@noImplicitAny: true
+declare function foo<T extends [any]>(x: T): T;
+
+var y = foo([undefined]);
+y = [""];

tests/cases/conformance/types/tuple/wideningTuples2.ts

@@ -0,0 +1,6 @@
+//@noImplicitAny: true
+var foo: () => [any] = function bar() {
+    let intermediate = bar();
+    intermediate = [""];
+    return [undefined];
+};

tests/cases/conformance/types/tuple/wideningTuples3.ts

@@ -0,0 +1,4 @@
+//@noImplicitAny: true
+var a: [any];
+
+var b = a = [undefined, null];

tests/cases/conformance/types/tuple/wideningTuples4.ts

@@ -0,0 +1,4 @@
+var a: [any];
+
+var b = a = [undefined, null];
+b = ["", ""];

tests/cases/conformance/types/tuple/wideningTuples5.ts

@@ -0,0 +1,2 @@
+//@noImplicitAny: true
+var [a, b] = [undefined, null];

tests/cases/conformance/types/tuple/wideningTuples6.ts

@@ -0,0 +1,3 @@
+var [a, b] = [undefined, null];
+a = "";
+b = "";

tests/cases/conformance/types/tuple/wideningTuples7.ts

@@ -0,0 +1,5 @@
+//@noImplicitAny: true
+var foo = function bar() {
+    let intermediate: [string];
+    return intermediate = [undefined];
+};