tests/tests/telecom/src/android/telecom/cts/ConnectionTest.java

/*
 * Copyright (C) 2015 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.telecom.cts;

import static android.telecom.cts.TestUtils.shouldTestTelecom;

import android.os.Build;
import android.telecom.Connection;
import android.telecom.DisconnectCause;
import android.test.AndroidTestCase;

import java.util.concurrent.Semaphore;
import java.util.concurrent.TimeUnit;

public class ConnectionTest extends AndroidTestCase {

    public void testStateCallbacks() {
        if (!shouldTestTelecom(getContext())) {
            return;
        }

        final Semaphore lock = new Semaphore(0);
        Connection connection = createConnection(lock);

        waitForStateChange(lock);
        assertEquals(Connection.STATE_NEW, connection.getState());

        connection.setInitializing();
        waitForStateChange(lock);
        assertEquals(Connection.STATE_INITIALIZING, connection.getState());

        connection.setInitialized();
        waitForStateChange(lock);
        assertEquals(Connection.STATE_NEW, connection.getState());

        connection.setRinging();
        waitForStateChange(lock);
        assertEquals(Connection.STATE_RINGING, connection.getState());

        connection.setDialing();
        waitForStateChange(lock);
        assertEquals(Connection.STATE_DIALING, connection.getState());

        connection.setActive();
        waitForStateChange(lock);
        assertEquals(Connection.STATE_ACTIVE, connection.getState());

        connection.setOnHold();
        waitForStateChange(lock);
        assertEquals(Connection.STATE_HOLDING, connection.getState());

        connection.setDisconnected(
                new DisconnectCause(DisconnectCause.LOCAL, "Test call"));
        waitForStateChange(lock);
        assertEquals(Connection.STATE_DISCONNECTED, connection.getState());

        connection.setRinging();
        waitForStateChange(lock);
        assertEquals("Connection should not move out of STATE_DISCONNECTED.",
                Connection.STATE_DISCONNECTED, connection.getState());
    }

    /**
     * {@link UnsupportedOperationException} is only thrown in L MR1+.
     */
    public void testFailedState() {
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP_MR1) {
            return;
        }
        Connection connection = Connection.createFailedConnection(
                new DisconnectCause(DisconnectCause.LOCAL, "Test call"));
        assertEquals(Connection.STATE_DISCONNECTED, connection.getState());

        try {
            connection.setRinging();
        } catch (UnsupportedOperationException e) {
            return;
        }
        fail("Connection should not move out of STATE_DISCONNECTED");
    }

    /**
     * {@link UnsupportedOperationException} is only thrown in L MR1+.
     */
    public void testCanceledState() {
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP_MR1) {
            return;
        }
        Connection connection = Connection.createCanceledConnection();
        assertEquals(Connection.STATE_DISCONNECTED, connection.getState());

        try {
            connection.setDialing();
        } catch (UnsupportedOperationException e) {
            return;
        }
        fail("Connection should not move out of STATE_DISCONNECTED");
    }

    private static Connection createConnection(final Semaphore lock) {
        BasicConnection connection = new BasicConnection();
        connection.setLock(lock);
        return connection;
    }

    private static void waitForStateChange(Semaphore lock) {
        try {
            lock.tryAcquire(1000, TimeUnit.MILLISECONDS);
        } catch (InterruptedException e) {
            fail("State transition timed out");
        }
    }

    private static final class BasicConnection extends Connection {
        private Semaphore mLock;

        public void setLock(Semaphore lock) {
            mLock = lock;
        }

        @Override
        public void onStateChanged(int state) {
            mLock.release();
        }
    }
}