             .to(beFalse(), description: "should NOT have called function with non-nil and non-nil arguments")
     }
     
-    func testDidCallFunctionWithNilArgument() {
+    func testNilArgument() {
         // given
         let testClass = TestClass()
         

        expect(testClass.calledArgumentsList[0].count).to(equal(1), description: "should have 1 argument in first argument set")
        expect("\(testClass.calledArgumentsList[0][0])").to(equal("bar"), description: "should have correct argument in first argument set recorded")
    }
    
    func testDidCallFunction() {
        // given

            description: "should NOT have called function with arguments at most 1 time")
    }
    
    // MARK: Argument Enum Tests
    
    func testDontCareArgument() {
        // given
        let testClass = TestClass()
        
