引入依赖

mockito依赖至少是3.4.0+

  2.     <dependencies>
  3.         <dependency>
  4.             <groupId>org.mockito</groupId>
  5.             <artifactId>mockito-core</artifactId>
  6.             <version>3.8.0</version>
  7.             <scope>test</scope>
  8.         </dependency>
  9.         <dependency>
  10.             <groupId>org.mockito</groupId>
  11.             <artifactId>mockito-inline</artifactId>
  12.             <version>3.8.0</version>
  13.             <scope>test</scope>
  14.         </dependency>
  15.     </dependencies>

Mock无参静态方法

  1. @Test
  2. void givenStaticMethodWithNoArgs_whenMocked_thenReturnsMockSuccessfully() {
  3.     assertThat(StaticUtils.name()).isEqualTo("Baeldung");
  5.     try (MockedStatic<StaticUtils> utilities = Mockito.mockStatic(StaticUtils.class)) {
  6.         utilities.when(StaticUtils::name).thenReturn("Eugen");
  7.         assertThat(StaticUtils.name()).isEqualTo("Eugen");
  8.     }
  10.     assertThat(StaticUtils.name()).isEqualTo("Baeldung");
  11. }

Mock有参静态方法

  1. @Test
  2. void givenStaticMethodWithArgs_whenMocked_thenReturnsMockSuccessfully() {
  3.     assertThat(StaticUtils.range(2, 6)).containsExactly(2, 3, 4, 5);
  5.     try (MockedStatic<StaticUtils> utilities = Mockito.mockStatic(StaticUtils.class)) {
  6.         utilities.when(() -> StaticUtils.range(2, 6))
  7.           .thenReturn(Arrays.asList(10, 11, 12));
  9.         assertThat(StaticUtils.range(2, 6)).containsExactly(10, 11, 12);
  10.     }
  12.     assertThat(StaticUtils.range(2, 6)).containsExactly(2, 3, 4, 5);
  13. }