WindowMetricsCalculatorRule

public final class WindowMetricsCalculatorRule implements TestRule

A TestRule that will sub out the actual WindowMetricsCalculator with a more simple one that will support testing independent of the current platform. The fake WindowMetricsCalculator that is used will return the width and height from the android.util.DisplayMetrics associated to an Activity. The result of WindowMetricsCalculator.computeCurrentWindowMetrics and WindowMetricsCalculator.computeMaximumWindowMetrics will be the same. For accurate results use the Espresso Test framework with an actual Activity and use the actual WindowMetricsCalculator.

Summary

public WindowMetricsCalculatorRule()

public @NonNull Statement apply(@NonNull Statement base, @NonNull Description description)