SecurityProviderMocking.java

// https://gist.github.com/OleksandrKucherenko/34b5c72445bcf9d5519af6898afcb8fb#file-keychainmoduletests-java-L87-L92

@RunWith(RobolectricTestRunner.class)
public class KeychainModuleTests {
  /**
   * Security fake provider.
   */
  private FakeProvider provider = new FakeProvider();

  @Before
  public void setUp() throws Exception {
    provider.configuration.clear();

    Security.insertProviderAt(provider, 0);
  }

  @After
  public void tearDown() throws Exception {
    Security.removeProvider(FakeProvider.NAME);
  }
}