1
2 #include "ProductionCode.h"
3 #include "unity.h"
4
5 /* sometimes you may want to get at local data in a module.
6 * for example: If you plan to pass by reference, this could be useful
7 * however, it should often be avoided */
8 extern int Counter;
9
setUp(void)10 void setUp(void)
11 {
12 /* This is run before EACH TEST */
13 Counter = 0x5a5a;
14 }
15
tearDown(void)16 void tearDown(void)
17 {
18 }
19
test_FindFunction_WhichIsBroken_ShouldReturnZeroIfItemIsNotInList_WhichWorksEvenInOurBrokenCode(void)20 void test_FindFunction_WhichIsBroken_ShouldReturnZeroIfItemIsNotInList_WhichWorksEvenInOurBrokenCode(void)
21 {
22 /* All of these should pass */
23 TEST_ASSERT_EQUAL(0, FindFunction_WhichIsBroken(78));
24 TEST_ASSERT_EQUAL(0, FindFunction_WhichIsBroken(1));
25 TEST_ASSERT_EQUAL(0, FindFunction_WhichIsBroken(33));
26 TEST_ASSERT_EQUAL(0, FindFunction_WhichIsBroken(999));
27 TEST_ASSERT_EQUAL(0, FindFunction_WhichIsBroken(-1));
28 }
29
test_FindFunction_WhichIsBroken_ShouldReturnTheIndexForItemsInList_WhichWillFailBecauseOurFunctionUnderTestIsBroken(void)30 void test_FindFunction_WhichIsBroken_ShouldReturnTheIndexForItemsInList_WhichWillFailBecauseOurFunctionUnderTestIsBroken(void)
31 {
32 /* You should see this line fail in your test summary */
33 TEST_ASSERT_EQUAL(1, FindFunction_WhichIsBroken(34));
34
35 /* Notice the rest of these didn't get a chance to run because the line above failed.
36 * Unit tests abort each test function on the first sign of trouble.
37 * Then NEXT test function runs as normal. */
38 TEST_ASSERT_EQUAL(8, FindFunction_WhichIsBroken(8888));
39 }
40
test_FunctionWhichReturnsLocalVariable_ShouldReturnTheCurrentCounterValue(void)41 void test_FunctionWhichReturnsLocalVariable_ShouldReturnTheCurrentCounterValue(void)
42 {
43 /* This should be true because setUp set this up for us before this test */
44 TEST_ASSERT_EQUAL_HEX(0x5a5a, FunctionWhichReturnsLocalVariable());
45
46 /* This should be true because we can still change our answer */
47 Counter = 0x1234;
48 TEST_ASSERT_EQUAL_HEX(0x1234, FunctionWhichReturnsLocalVariable());
49 }
50
test_FunctionWhichReturnsLocalVariable_ShouldReturnTheCurrentCounterValueAgain(void)51 void test_FunctionWhichReturnsLocalVariable_ShouldReturnTheCurrentCounterValueAgain(void)
52 {
53 /* This should be true again because setup was rerun before this test (and after we changed it to 0x1234) */
54 TEST_ASSERT_EQUAL_HEX(0x5a5a, FunctionWhichReturnsLocalVariable());
55 }
56
test_FunctionWhichReturnsLocalVariable_ShouldReturnCurrentCounter_ButFailsBecauseThisTestIsActuallyFlawed(void)57 void test_FunctionWhichReturnsLocalVariable_ShouldReturnCurrentCounter_ButFailsBecauseThisTestIsActuallyFlawed(void)
58 {
59 /* Sometimes you get the test wrong. When that happens, you get a failure too... and a quick look should tell
60 * you what actually happened...which in this case was a failure to setup the initial condition. */
61 TEST_ASSERT_EQUAL_HEX(0x1234, FunctionWhichReturnsLocalVariable());
62 }
63