/*
 * Copyright (C) 2008 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.text.method.cts;

import android.cts.util.KeyEventUtil;
import android.text.InputType;
import android.text.method.DateKeyListener;
import android.view.KeyEvent;

/**
 * Test {@link android.text.method.DateKeyListener}.
 */
public class DateKeyListenerTest extends KeyListenerTestCase {

    private KeyEventUtil mKeyEventUtil;

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        mKeyEventUtil = new KeyEventUtil(getInstrumentation());
    }

    public void testConstructor() {
        new DateKeyListener();
    }

    public void testGetInstance() {
        DateKeyListener listener1 = DateKeyListener.getInstance();
        DateKeyListener listener2 = DateKeyListener.getInstance();

        assertNotNull(listener1);
        assertNotNull(listener2);
        assertSame(listener1, listener2);
    }

    public void testGetAcceptedChars() {
        MockDateKeyListener mockDateKeyListener = new MockDateKeyListener();

        TextMethodUtils.assertEquals(DateKeyListener.CHARACTERS,
                mockDateKeyListener.getAcceptedChars());
    }

    public void testGetInputType() {
        DateKeyListener dateKeyListener = new DateKeyListener();

        int expected = InputType.TYPE_CLASS_DATETIME | InputType.TYPE_DATETIME_VARIATION_DATE;
        assertEquals(expected, dateKeyListener.getInputType());
    }

    /*
     * Scenario description:
     * 1. Press '1' key and check if the content of TextView becomes "1"
     * 2. Press '2' key and check if the content of TextView becomes "12"
     * 3. Press an unaccepted key if it exists and this key will not be accepted.
     * 4. Press '-' key and check if the content of TextView becomes "12-"
     * 5. Press '/' key and check if the content of TextView becomes "12-/"
     * 6. remove DateKeyListener and Press '/' key, this key will not be accepted
     */
    public void testDateTimeKeyListener() {
        final DateKeyListener dateKeyListener = DateKeyListener.getInstance();

        setKeyListenerSync(dateKeyListener);
        assertEquals("", mTextView.getText().toString());

        // press '1' key.
        mKeyEventUtil.sendKeys(mTextView, KeyEvent.KEYCODE_1);
        assertEquals("1", mTextView.getText().toString());

        // press '2' key.
        mKeyEventUtil.sendKeys(mTextView, KeyEvent.KEYCODE_2);
        assertEquals("12", mTextView.getText().toString());

        // press an unaccepted key if it exists.
        int keyCode = TextMethodUtils.getUnacceptedKeyCode(DateKeyListener.CHARACTERS);
        if (-1 != keyCode) {
            mKeyEventUtil.sendKeys(mTextView, keyCode);
            assertEquals("12", mTextView.getText().toString());
        }

        // press '-' key.
        mKeyEventUtil.sendKeys(mTextView, KeyEvent.KEYCODE_MINUS);
        assertEquals("12-", mTextView.getText().toString());

        // press '/' key.
        mKeyEventUtil.sendKeys(mTextView, KeyEvent.KEYCODE_SLASH);
        assertEquals("12-/", mTextView.getText().toString());

        // remove DateKeyListener
        setKeyListenerSync(null);
        assertEquals("12-/", mTextView.getText().toString());

        // press '/' key, it will not be accepted.
        mKeyEventUtil.sendKeys(mTextView, KeyEvent.KEYCODE_SLASH);
        assertEquals("12-/", mTextView.getText().toString());
    }

    /**
     * A mocked {@link android.text.method.DateKeyListener} for testing purposes.
     *
     * Allows {@link DateKeyListenerTest} to call
     * {@link android.text.method.DateKeyListener#getAcceptedChars()}.
     */
    private class MockDateKeyListener extends DateKeyListener {
        @Override
        protected char[] getAcceptedChars() {
            return super.getAcceptedChars();
        }
    }
}