java单元测试之Mock静态方法

发表于:2018-10-22 17:11  作者:zslm   来源:51testing采编

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  1
  public final class AmountUtil {
  public static String CustomFormatWith2Digits(int amount) {
  return "1";
  }
  }
  2.引入依赖
  <dependency>
  <groupId>org.mockito</groupId>
  <artifactId>mockito-core</artifactId>
  <version>1.10.19</version>
  <scope>test</scope>
  </dependency>
  <dependency>
  <groupId>org.powermock</groupId>
  <artifactId>powermock-api-mockito</artifactId>
  <version>1.6.5</version>
  <scope>test</scope>
  </dependency>
  <dependency>
  <groupId>org.powermock</groupId>
  <artifactId>powermock-module-junit4</artifactId>
  <version>1.6.5</version>
  <scope>test</scope>
  </dependency>
  3.写单元测试
  import org.junit.Assert;
  import org.junit.Before;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.mockito.Mockito;
  import org.powermock.api.mockito.PowerMockito;
  import org.powermock.core.classloader.annotations.PowerMockIgnore;
  import org.powermock.core.classloader.annotations.PrepareForTest;
  import org.powermock.modules.junit4.PowerMockRunner;
  import static org.mockito.Matchers.anyInt;
  import static org.mockito.Matchers.eq;
  import static org.mockito.MockitoAnnotations.initMocks;
  import static org.mockito.Matchers.anyObject;
  import static org.mockito.Mockito.when;
  @RunWith(PowerMockRunner.class)
  @PrepareForTest({AmountUtil.class})
  @PowerMockIgnore("javax.management.*")
  public class StaticClassTest {
  @Before
  public void setUp() throws Exception {
  initMocks(this);
  }
  @Test
  public void test1() throws Exception {
  this.mockResources();
  String s = AmountUtil.CustomFormatWith2Digits(1);
  Assert.assertTrue(s == "");
  }
  private void mockResources() throws Exception {
  PowerMockito.mockStatic(AmountUtil.class);
  PowerMockito.when(AmountUtil.CustomFormatWith2Digits(anyInt())).thenReturn("");
  }
  }

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