Mokito Example
Source: https://sites.google.com/a/pintailconsultingllc.com/java/mockito-examples
package examples.mockito;
2
3 import java.math.BigDecimal;
4
5 /**
6 * @author Christopher Bartling, Pintail Consulting LLC
7 * @since Aug 31, 2008 1:18:11 AM
8 */
9 public interface PricingService {
10
11 void setDataAccess(DataAccess dataAccess);
12
13 BigDecimal getPrice(String sku) throws SkuNotFoundException;
14 }
//-----------------------------------------------------------------------------------
1 package examples.mockito;
2
3 import java.math.BigDecimal;
4
5 /**
6 * @author Christopher Bartling, Pintail Consulting LLC
7 * @since Aug 31, 2008 1:18:22 AM
8 */
9 public interface DataAccess {
10
11 BigDecimal getPriceBySku(String sku);
12 }
//-----------------------------------------------------------------------------------
public class PricingServiceImpl implements PricingService {
10
11 private DataAccess dataAccess;
12
13 public void setDataAccess(DataAccess dataAccess) {
14 this.dataAccess = dataAccess;
15 }
16
17 public BigDecimal getPrice(String sku) throws SkuNotFoundException {
18 BigDecimal price = this.dataAccess.getPriceBySku(sku);
19 if (price == null) {
20 throw new SkuNotFoundException("SKU not found.");
21 }
22 return price;
23 }
24 }
// MOCKITO unit test -----------------------------------------------------------------------------
17 public class PricingServiceTests {
18 private static final String SKU = "3283947";
19 private static final String BAD_SKU = "-9999993434";
20 private PricingService systemUnderTest;
21
22 @MockitoAnnotations.Mock
23 private DataAccess mockedDependency;
24
25 @Before
26 public void doBeforeEachTestCase() {
27 MockitoAnnotations.initMocks(this);
28 systemUnderTest = new PricingServiceImpl();
29 systemUnderTest.setDataAccess(mockedDependency);
30 }
31
32 @Test
33 public void getPrice() throws SkuNotFoundException {
34 stub(mockedDependency.getPriceBySku(SKU)).toReturn(new BigDecimal(100));
35 final BigDecimal price = systemUnderTest.getPrice(SKU);
36 // Verify state
37 assertNotNull(price);
38
39 // Verify behavior
40 verify(mockedDependency).getPriceBySku(SKU);
41 }
42
43 @Test(expected = SkuNotFoundException.class)
44 public void getPriceNonExistentSkuThrowsException() throws SkuNotFoundException {
45 stub(mockedDependency.getPriceBySku(BAD_SKU)).toReturn(null);
46 final BigDecimal price = systemUnderTest.getPrice(BAD_SKU);
47 }
48
49 @Test(expected = RuntimeException.class)
50 public void getPriceDataAccessThrowsRuntimeException() throws SkuNotFoundException {
51 stub(mockedDependency.getPriceBySku(SKU)).toThrow(new RuntimeException("Fatal data access exception."));
52 final BigDecimal price = systemUnderTest.getPrice(SKU);
53 }
54
55 }