参数化测试很好,可以将不同的数据输入到测试中。但是,我创建了一个示例计算器,希望为其创建参数化测试。但是,我发现您只能为一个测试创建1组参数化数据。
我创建了参数化测试,以将2个数字与预期结果相加。此数据将无法与减法一起使用,因为预期结果将有所不同。
是否可以为每个测试的加,减,乘和除设置参数化数据?
非常感谢您的任何建议,
@RunWith(Parameterized.class)
public class CalculatorModelPresenterTest {
private CalculatorModel mCalculatorModel;
/* Array of tests */
@Parameterized.Parameters
public static Collection<Object[]> data() {
return Arrays.asList(new Object[][]{
{3.0, 4.0, 7.0},
{4.0, 3.0, 7.0},
{8.0, 2.0, 10.0},
{-1.0, 4.0, 3.0},
{3256.0, 4.0, 3260.0}
});
}
private double mNumberOne;
private double mNumberTwo;
private double mExpectedResult;
/* CONSTRUCTOR THAT ASSIGNS THE FIELDS WITH THE TEST DATA */
public CalculatorModelPresenterTest(double numberOne, double numberTwo, double expectedResult) {
mNumberOne = numberOne;
mNumberTwo = numberTwo;
mExpectedResult = expectedResult;
}
/* THIS TEST WILL PASS AS THE TEST DATA IS FOR ADDING */
@Test
public void testAdd() throws Exception {
final double actualResult = mCalculatorModel.add(mNumberOne, mNumberTwo);
assertEquals(actualResult, mExpectedResult, 0);
}
/* HOWEVER, THIS TEST WILL ALWAYS FAIL AS THE TEST DATA IS CUSTOMIZED FOR THE ADD */
@Test
public void testSub() throws Exception {
final double actualResult = mCalculatorModel.sub(mNumberOne, mNumberTwo);
assertEquals(actualResult, mExpectedResult, 0);
}
@Before
public void setUp() throws Exception {
mCalculatorModel = new CalculatorModel();
}
@After
public void tearDown() throws Exception {
mCalculatorModel = null;
}
}
只需添加另一个这样的参数:
return Arrays.asList(new Object[][]{
{3.0, 4.0, 7.0, -1.0},
{4.0, 3.0, 7.0, 1.0},
{8.0, 2.0, 10.0, 6.0},
{-1.0, 4.0, 3.0, -5.0},
{3256.0, 4.0, 3260.0, 3252.0}
});
...
private double mExpectedSubResult;
/* CONSTRUCTOR THAT ASSIGNS THE FIELDS WITH THE TEST DATA */
public CalculatorModelPresenterTest(double numberOne, double numberTwo, double expectedResult, double expectedSubResult) {
mNumberOne = numberOne;
mNumberTwo = numberTwo;
mExpectedResult = expectedResult;
mExpectedSubResult = expectedSubResult;
}
...
/* THIS TEST WILL NOW PASS */
@Test
public void testSub() throws Exception {
final double actualResult = mCalculatorModel.sub(mNumberOne, mNumberTwo);
assertEquals(actualResult, mExpectedSubResult, 0);
}
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