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
20
test_FindFunction_WhichIsBroken_ShouldReturnZeroIfItemIsNotInList_WhichWorksEvenInOurBrokenCode(void)21 void test_FindFunction_WhichIsBroken_ShouldReturnZeroIfItemIsNotInList_WhichWorksEvenInOurBrokenCode(void)
22 {
23 /* All of these should pass */
24 TEST_ASSERT_EQUAL(0, FindFunction_WhichIsBroken(78));
25 TEST_ASSERT_EQUAL(0, FindFunction_WhichIsBroken(2));
26 TEST_ASSERT_EQUAL(0, FindFunction_WhichIsBroken(33));
27 TEST_ASSERT_EQUAL(0, FindFunction_WhichIsBroken(999));
28 TEST_ASSERT_EQUAL(0, FindFunction_WhichIsBroken(-1));
29 }
30
test_FindFunction_WhichIsBroken_ShouldReturnTheIndexForItemsInList_WhichWillFailBecauseOurFunctionUnderTestIsBroken(void)31 void test_FindFunction_WhichIsBroken_ShouldReturnTheIndexForItemsInList_WhichWillFailBecauseOurFunctionUnderTestIsBroken(void)
32 {
33 /* You should see this line fail in your test summary */
34 TEST_ASSERT_EQUAL(1, FindFunction_WhichIsBroken(34));
35
36 /* Notice the rest of these didn't get a chance to run because the line above failed.
37 * Unit tests abort each test function on the first sign of trouble.
38 * Then NEXT test function runs as normal. */
39 TEST_ASSERT_EQUAL(8, FindFunction_WhichIsBroken(8888));
40 }
41
test_FunctionWhichReturnsLocalVariable_ShouldReturnTheCurrentCounterValue(void)42 void test_FunctionWhichReturnsLocalVariable_ShouldReturnTheCurrentCounterValue(void)
43 {
44 /* This should be true because setUp set this up for us before this test */
45 TEST_ASSERT_EQUAL_HEX(0x5a5a, FunctionWhichReturnsLocalVariable());
46
47 /* This should be true because we can still change our answer */
48 Counter = 0x1234;
49 TEST_ASSERT_EQUAL_HEX(0x1234, FunctionWhichReturnsLocalVariable());
50 }
51
test_FunctionWhichReturnsLocalVariable_ShouldReturnTheCurrentCounterValueAgain(void)52 void test_FunctionWhichReturnsLocalVariable_ShouldReturnTheCurrentCounterValueAgain(void)
53 {
54 /* This should be true again because setup was rerun before this test (and after we changed it to 0x1234) */
55 TEST_ASSERT_EQUAL_HEX(0x5a5a, FunctionWhichReturnsLocalVariable());
56 }
57
test_FunctionWhichReturnsLocalVariable_ShouldReturnCurrentCounter_ButFailsBecauseThisTestIsActuallyFlawed(void)58 void test_FunctionWhichReturnsLocalVariable_ShouldReturnCurrentCounter_ButFailsBecauseThisTestIsActuallyFlawed(void)
59 {
60 /* Sometimes you get the test wrong. When that happens, you get a failure too... and a quick look should tell
61 * you what actually happened...which in this case was a failure to setup the initial condition. */
62 TEST_ASSERT_EQUAL_HEX(0x1234, FunctionWhichReturnsLocalVariable());
63 }
64