#41: Add usage example

tests/data/mini_c_test/b.c

@@ -35,3 +35,10 @@ void b_step(void){
 
     local_extern(2);
 }
+
+int x1 = 1;
+
+int get_x1(void)
+{
+   return x1;
+}

tests/data/mini_c_test/b_test.cc

@@ -31,28 +31,40 @@ TEST(b_test, TestSignalChain_3)
   b_step();
 }
 
-TEST(b_test, TestSignalChain_4)
+/* Introducing a test fixture */
+
+class B : public Test {
+  void SetUp() override {
+     mock = CREATE_MOCK();   // Create the mock handle in the fixture
+     // Now some generic reactions can be set up
+     ON_CALL(*mock, a_get_y5).WillByDefault(Return(13));
+  }
+  void TearDown() override {
+     DESTROY_MOCK();  // Tear down the mock handle to finalize its expecations
+  }
+
+protected:
+   mock_ptr_t mock;
+};
+
+TEST_F(B, TestSignalChain_4)
 {
-  LOCAL_MOCK(mymock);
   a_y4 = 13;
-  EXPECT_CALL(mymock, c_set_u3_and_u4(_, 13));
+  EXPECT_CALL(*mock, c_set_u3_and_u4(_, 13));
   b_step();
 }
 
-TEST(b_test, TestSignalChain_5)
+TEST_F(B, TestSignalChain_5)
 {
-  LOCAL_MOCK(mymock);
-  EXPECT_CALL(mymock, a_get_y5())
-      .WillOnce(Return(13));
-  EXPECT_CALL(mymock, c_get_y3_and_set_u5(13));
+  // Makes use of a_get_y5 behavior from the fixture's setup
+  EXPECT_CALL(*mock, c_get_y3_and_set_u5(13));
   b_step();
 }
 
-TEST(b_test, TestSignalChain_6)
+TEST_F(B, TestSignalChain_6)
 {
-  LOCAL_MOCK(mymock);
-  EXPECT_CALL(mymock, a_get_y6(_))
+  EXPECT_CALL(*mock, a_get_y6(_))
       .WillOnce(SetArgPointee<0>(13));
-  EXPECT_CALL(mymock, c_set_u6(13));
+  EXPECT_CALL(*mock, c_set_u6(13));
   b_step();
 }