androidx/emoji/widget/EmojiTextWatcherTest.java

/*
 * Copyright (C) 2017 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 androidx.emoji.widget;

import static androidx.emoji.util.EmojiMatcher.sameCharSequence;

import static org.junit.Assert.assertEquals;
import static org.mockito.Matchers.any;
import static org.mockito.Matchers.anyInt;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import android.support.test.filters.SmallTest;
import android.support.test.runner.AndroidJUnit4;
import android.text.Spannable;
import android.text.SpannableString;
import android.widget.EditText;

import androidx.emoji.text.EmojiCompat;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;

@SmallTest
@RunWith(AndroidJUnit4.class)
public class EmojiTextWatcherTest {

    private EmojiTextWatcher mTextWatcher;
    private EmojiCompat mEmojiCompat;

    @Before
    public void setup() {
        final EditText editText = mock(EditText.class);
        mEmojiCompat = mock(EmojiCompat.class);
        EmojiCompat.reset(mEmojiCompat);
        mTextWatcher = new EmojiTextWatcher(editText);
    }

    @Test
    public void testOnTextChanged_callsProcess() {
        final Spannable testString = new SpannableString("abc");
        when(mEmojiCompat.getLoadState()).thenReturn(EmojiCompat.LOAD_STATE_SUCCEEDED);

        mTextWatcher.onTextChanged(testString, 0, 0, 1);

        verify(mEmojiCompat, times(1)).process(sameCharSequence(testString), eq(0), eq(1),
                eq(Integer.MAX_VALUE), anyInt());
        verify(mEmojiCompat, times(0)).registerInitCallback(any(EmojiCompat.InitCallback.class));
    }

    @Test
    public void testOnTextChanged_whenEmojiCompatLoading() {
        final Spannable testString = new SpannableString("abc");
        when(mEmojiCompat.getLoadState()).thenReturn(EmojiCompat.LOAD_STATE_LOADING);

        mTextWatcher.onTextChanged(testString, 0, 0, 1);

        verify(mEmojiCompat, times(0)).process(any(Spannable.class), anyInt(), anyInt(), anyInt(),
                anyInt());
        verify(mEmojiCompat, times(1)).registerInitCallback(any(EmojiCompat.InitCallback.class));
    }

    @Test
    public void testOnTextChanged_whenEmojiCompatLoadFailed() {
        final Spannable testString = new SpannableString("abc");
        when(mEmojiCompat.getLoadState()).thenReturn(EmojiCompat.LOAD_STATE_FAILED);

        mTextWatcher.onTextChanged(testString, 0, 0, 1);

        verify(mEmojiCompat, times(0)).process(any(Spannable.class), anyInt(), anyInt(), anyInt(),
                anyInt());
        verify(mEmojiCompat, times(0)).registerInitCallback(any(EmojiCompat.InitCallback.class));
    }

    @Test
    public void testSetEmojiReplaceStrategy() {
        final Spannable testString = new SpannableString("abc");
        when(mEmojiCompat.getLoadState()).thenReturn(EmojiCompat.LOAD_STATE_SUCCEEDED);

        assertEquals(EmojiCompat.REPLACE_STRATEGY_DEFAULT, mTextWatcher.getEmojiReplaceStrategy());

        mTextWatcher.onTextChanged(testString, 0, 0, 1);

        verify(mEmojiCompat, times(1)).process(any(Spannable.class), anyInt(), anyInt(), anyInt(),
                eq(EmojiCompat.REPLACE_STRATEGY_DEFAULT));

        mTextWatcher.setEmojiReplaceStrategy(EmojiCompat.REPLACE_STRATEGY_ALL);

        mTextWatcher.onTextChanged(testString, 0, 0, 1);

        verify(mEmojiCompat, times(1)).process(any(Spannable.class), anyInt(), anyInt(), anyInt(),
                eq(EmojiCompat.REPLACE_STRATEGY_ALL));
    }

    @Test
    public void testFilter_withManualLoadStrategy() {
        final Spannable testString = new SpannableString("abc");
        when(mEmojiCompat.getLoadState()).thenReturn(EmojiCompat.LOAD_STATE_DEFAULT);

        mTextWatcher.onTextChanged(testString, 0, 0, 1);

        verify(mEmojiCompat, times(0)).process(any(Spannable.class), anyInt(), anyInt());
        verify(mEmojiCompat, times(1)).registerInitCallback(any(EmojiCompat.InitCallback.class));
    }
}