Taking a screenshot of an area less than that of the entire Activity

It is often desirable to capture only a portion of your screen or to capture a single View. For these cases, you can use the setScreenshotViewProvider to specify which View to capture.

Using setScreenshotViewProvider, you must return a View reference which will be used by Testify to narrow the bitmap to only that View.

ScreenshotTestRule

@TestifyLayout(R.layout.view_client_details)
@ScreenshotInstrumentation
@Test
fun default() {
    rule
        .setScreenshotViewProvider {
            it.findViewById(R.id.info_card)
        }
        .assertSame()
}

ScreenshotScenarioRule

@TestifyLayout(R.layout.view_client_details)
@ScreenshotInstrumentation
@Test
fun default() {
    launchActivity<TestHarnessActivity>().use { scenario ->
        rule
            .withScenario(scenario)
            .setScreenshotViewProvider {
                it.findViewById(R.id.info_card)
            }
            .assertSame()
    }
}