Making Launcher TAPL check orientation only when the expected orientation is set by the test

import android.util.Log;

import android.view.InputDevice;

import android.view.MotionEvent;

import android.view.Surface;

import android.view.ViewConfiguration;

import android.view.WindowManager;

import android.view.accessibility.AccessibilityEvent;

    private final UiDevice mDevice;

    private final Instrumentation mInstrumentation;

    private int mExpectedRotation = Surface.ROTATION_0;

    private Integer mExpectedRotation = null;

    private final Uri mTestProviderUri;

    private final Deque<String> mDiagnosticContext = new LinkedList<>();

    private Function<Long, String> mSystemHealthSupplier;

    private boolean mCheckEventsForSuccessfulGestures = false;

    private Runnable mOnLauncherCrashed;

    private static Pattern getTouchEventPattern(String prefix, String action) {

        // The pattern includes checks that we don't get a multi-touch events or other surprises.

        return Pattern.compile(

        mIgnoreTaskbarVisibility = ignoreTaskbarVisibility;

    }

    public void setExpectedRotation(int expectedRotation) {

    /**

     * Sets expected rotation.

     * TAPL periodically checks that Launcher didn't suddenly change the rotation to unexpected one.

     * Null parameter disables checks. The initial state is "no checks".

     */

    public void setExpectedRotation(Integer expectedRotation) {

        mExpectedRotation = expectedRotation;

    }

    private UiObject2 verifyContainerType(ContainerType containerType) {

        waitForLauncherInitialized();

        if (mExpectedRotation != null) {

            assertEquals("Unexpected display rotation",

                    mExpectedRotation, mDevice.getDisplayRotation());

        }

        final String error = getNavigationModeMismatchError(true);

        assertTrue(error, error == null);