test/cmock-function-mockers_test.cc

   1 #include <cmock/cmock.h>
   2
   3 #include "math.h"
   4
   5 using namespace ::testing;
   6
   7 DECLARE_FUNCTION_MOCK2(AddFunctionMock, add, int(int, int));
   8 DECLARE_FUNCTION_MOCK1(NegateFunctionMock, negate, int(int));
   9
  10 IMPLEMENT_FUNCTION_MOCK2(AddFunctionMock, add, int(int, int));
  11 IMPLEMENT_FUNCTION_MOCK1(NegateFunctionMock, negate, int(int));
  12
  13 /**
  14  * Function add is mocked as long as AddFunctionMock instance exists.
  15  * Once mock function is destroyed, a call directs to a real function.
  16  */
  17 TEST(FunctionMockersTest, MocksFunctionAsLongAsMockInstanceExists) {
  18
  19         {
  20                 AddFunctionMock mock;
  21
  22                 EXPECT_FUNCTION_CALL(mock, (1, 2)).WillOnce(Return(12));
  23                 ASSERT_EQ(12, add(1, 2));
  24         }
  25
  26         ASSERT_EQ(3, add(1, 2));
  27 }
  28
  29 /**
  30  * real static mock class field holds pointer to a real function.
  31  */
  32 TEST(FunctionMockersTest, FunctionMockExportsRealFunctionPointer) {
  33         EXPECT_EQ(3, AddFunctionMock::real(1, 2));
  34 }
  35
  36 /**
  37  * Function negate doesn't exist, but can be mocked.
  38  */
  39 TEST(FunctionMockersTest, ThrowsExceptionIfRealFunctionNotFound)
  40 {
  41         {
  42                 NegateFunctionMock mock;
  43
  44                 EXPECT_FUNCTION_CALL(mock, (9)).WillOnce(Return(3));
  45
  46                 ASSERT_EQ(3, negate(9));
  47         }
  48
  49         EXPECT_THROW(negate(9), std::logic_error);
  50 }