Added tests.

tests/cases/conformance/types/contextualTypes/commaOperator/contextuallyTypeCommaOperator01.ts

@@ -0,0 +1,3 @@
+let x: (a: string) => string;
+
+x = (100, a => a);

tests/cases/conformance/types/contextualTypes/commaOperator/contextuallyTypeCommaOperator02.ts

@@ -0,0 +1,6 @@
+let x: (a: string) => string;
+
+x = (100, a => {
+    const b: number = a;
+    return b;
+});

tests/cases/conformance/types/contextualTypes/logicalAnd/contextuallyTypeLogicalAnd01.ts

@@ -0,0 +1,4 @@
+let x: (a: string) => string;
+let y = true;
+
+x = y && (a => a);

tests/cases/conformance/types/contextualTypes/logicalAnd/contextuallyTypeLogicalAnd02.ts

@@ -0,0 +1,7 @@
+let x: (a: string) => string;
+let y = true;
+
+x = y && (a => {
+    const b: number = a;
+    return b;
+});