Espresso + Junit4 - Login Once Before Running All Test

I want to write some automated test for one of my application. All of the functionality requires login. So, i have written test, but for each test, it is doing login and testing th

Solution 1:

You can use methods with @BeforeClass and @AfterClass annotations.

@RunWith(AndroidJUnit4.class)publicclassAllDisabledTest {
    publicstaticfinalStringUSER_NAME="all_disabled";
    publicstaticfinalStringDISPLAY_NAME="All Disabled";
    publicstaticfinalStringPASSWORD="1234";

    @Rulepublic ActivityTestRule<LoginActivity> mActivityRule = newActivityTestRule<>(
            LoginActivity.class);
    }

    @BeforeClasspublicstaticvoidsetUpBeforeClass() {
        // do login stuff here
    }

    @AfterClasspublicstaticvoidtearDownAfterClass() {
        // ...
    }

    // ...
}

Note: @BeforeClass and @AfterClass methods must be static.