Add tests

tests/cases/conformance/types/thisType/thisTypeInObjectLiterals2.ts

@@ -1,7 +1,5 @@
 // @declaration: true
-// @strictNullChecks: true
-// @noImplicitAny: true
-// @noImplicitThis: true
+// @strict: true
 // @target: es5
 
 // In methods of an object literal with no contextual type, 'this' has the type
@@ -51,6 +49,42 @@ let p1: Point = {
     }
 };
 
+let p2: Point | null = {
+    x: 10,
+    y: 20,
+    moveBy(dx, dy, dz) {
+        this.x += dx;
+        this.y += dy;
+        if (this.z && dz) {
+            this.z += dz;
+        }
+    }
+};
+
+let p3: Point | undefined = {
+    x: 10,
+    y: 20,
+    moveBy(dx, dy, dz) {
+        this.x += dx;
+        this.y += dy;
+        if (this.z && dz) {
+            this.z += dz;
+        }
+    }
+};
+
+let p4: Point | null | undefined = {
+    x: 10,
+    y: 20,
+    moveBy(dx, dy, dz) {
+        this.x += dx;
+        this.y += dy;
+        if (this.z && dz) {
+            this.z += dz;
+        }
+    }
+};
+
 declare function f1(p: Point): void;
 
 f1({
@@ -65,6 +99,20 @@ f1({
     }
 });
 
+declare function f2(p: Point | null | undefined): void;
+
+f2({
+    x: 10,
+    y: 20,
+    moveBy(dx, dy, dz) {
+        this.x += dx;
+        this.y += dy;
+        if (this.z && dz) {
+            this.z += dz;
+        }
+    }
+});
+
 // In methods of an object literal with a contextual type that includes some
 // ThisType<T>, 'this' is of type T.