add func mock test, fix func mock, interface mock

Author: wangjiejacques

CodeGeneratorTests/funcMock.txt

@@ -3,4 +3,5 @@
    testSuccessHandlerDidReturn = successHandler(testSuccessHandlerParam0, testSuccessHandlerParam1)
   }
   testFuncMockWasCalled = true
+  testFuncMockWasCalledTimes += 1
   return testFuncMockShouldReturn

Generate.../FuncMocker.swift

@@ -45,6 +45,8 @@ struct FuncMocker {
         var bodyLines = paramMockers.flatMap { $0.lines }
         let wasCalledBodyLine = "\(indentation)\(indentation)\(wasCalledVariable.name) = true"
         bodyLines.append(wasCalledBodyLine)
+        let wasCalledTimesBodyLine = "\(indentation)\(indentation)\(wasCalledTimesVariable.name) += 1"
+        bodyLines.append(wasCalledTimesBodyLine)
         if let returnVariable = returnVariable {
             let returnLine = "\(indentation)\(indentation)return \(returnVariable.name)"
             bodyLines.append(returnLine)