function spying tests

NagRock · Nov 12, 2017 · c1e4cf3 · c1e4cf3
1 parent 2fe1992
commit c1e4cf3
Showing 1 changed file with 14 additions and 0 deletions.
diff --git a/test/spy.spec.ts b/test/spy.spec.ts
@@ -17,6 +17,10 @@ describe("spying on a real object", () => {
         }
     }
 
+    function RealFn() {
+
+    }
+
     describe("calling a mocked method", () => {
         it("delegates a call to the mock", () => {
             // given
@@ -72,6 +76,16 @@ describe("spying on a real object", () => {
         });
     });
 
+    describe("spying functions", () => {
+        it("should not mock function.prototype methods", () => {
+          // when
+          spy(RealFn);
+
+          expect(RealFn.bind).toBe(Function.prototype.bind);
+          expect(RealFn.apply).toBe(Function.prototype.apply);
+        });
+    });
+
     describe("access to a real object property", () => {
         it("get instance property", () => {
           // given