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 */
8extern int Counter;
9
10void setUp(void)
11{
12  /* This is run before EACH TEST */
13  Counter = 0x5a5a;
14}
15
16void tearDown(void)
17{
18}
19
20void 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(2));
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
30void 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
41void 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
51void 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
57void 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