TestProductionCode.c

00001 #include "ProductionCode.h"
00002 #include "unity.h"
00003 #include "unity_fixture.h"
00004 
00005 TEST_GROUP(ProductionCode);
00006 
00007 //sometimes you may want to get at local data in a module.
00008 //for example: If you plan to pass by reference, this could be useful
00009 //however, it should often be avoided
00010 extern int Counter;
00011 
00012 TEST_SETUP(ProductionCode)
00013 {
00014   //This is run before EACH TEST
00015   Counter = 0x5a5a;
00016 }
00017 
00018 TEST_TEAR_DOWN(ProductionCode)
00019 {
00020 }
00021 
00022 TEST(ProductionCode, FindFunction_WhichIsBroken_ShouldReturnZeroIfItemIsNotInList_WhichWorksEvenInOurBrokenCode)
00023 {
00024   //All of these should pass
00025   TEST_ASSERT_EQUAL(0, FindFunction_WhichIsBroken(78));
00026   TEST_ASSERT_EQUAL(0, FindFunction_WhichIsBroken(1));
00027   TEST_ASSERT_EQUAL(0, FindFunction_WhichIsBroken(33));
00028   TEST_ASSERT_EQUAL(0, FindFunction_WhichIsBroken(999));
00029   TEST_ASSERT_EQUAL(0, FindFunction_WhichIsBroken(-1));
00030 }
00031 
00032 TEST(ProductionCode, FindFunction_WhichIsBroken_ShouldReturnTheIndexForItemsInList_WhichWillFailBecauseOurFunctionUnderTestIsBroken)
00033 {
00034   // You should see this line fail in your test summary
00035   TEST_ASSERT_EQUAL(1, FindFunction_WhichIsBroken(34));
00036 
00037   // Notice the rest of these didn't get a chance to run because the line above failed.
00038   // Unit tests abort each test function on the first sign of trouble.
00039   // Then NEXT test function runs as normal.
00040   TEST_ASSERT_EQUAL(8, FindFunction_WhichIsBroken(8888));
00041 }
00042 
00043 TEST(ProductionCode, FunctionWhichReturnsLocalVariable_ShouldReturnTheCurrentCounterValue)
00044 {
00045     //This should be true because setUp set this up for us before this test
00046     TEST_ASSERT_EQUAL_HEX(0x5a5a, FunctionWhichReturnsLocalVariable());
00047 
00048     //This should be true because we can still change our answer
00049     Counter = 0x1234;
00050     TEST_ASSERT_EQUAL_HEX(0x1234, FunctionWhichReturnsLocalVariable());
00051 }
00052 
00053 TEST(ProductionCode, FunctionWhichReturnsLocalVariable_ShouldReturnTheCurrentCounterValueAgain)
00054 {
00055     //This should be true again because setup was rerun before this test (and after we changed it to 0x1234)
00056     TEST_ASSERT_EQUAL_HEX(0x5a5a, FunctionWhichReturnsLocalVariable());
00057 }
00058 
00059 TEST(ProductionCode, FunctionWhichReturnsLocalVariable_ShouldReturnCurrentCounter_ButFailsBecauseThisTestIsActuallyFlawed)
00060 {
00061     //Sometimes you get the test wrong.  When that happens, you get a failure too... and a quick look should tell
00062     // you what actually happened...which in this case was a failure to setup the initial condition.
00063     TEST_ASSERT_EQUAL_HEX(0x1234, FunctionWhichReturnsLocalVariable());
00064 }