tests/tests/text/src/android/text/style/cts/SuperscriptSpanTest.java

/*
 * 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.style.cts;

import static org.junit.Assert.assertEquals;

import android.os.Parcel;
import android.support.test.filters.SmallTest;
import android.support.test.runner.AndroidJUnit4;
import android.text.TextPaint;
import android.text.style.SuperscriptSpan;

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

@SmallTest
@RunWith(AndroidJUnit4.class)
public class SuperscriptSpanTest {
    @Test
    public void testConstructor() {
        SuperscriptSpan superscriptSpan = new SuperscriptSpan();

        Parcel p = Parcel.obtain();
        try {
            superscriptSpan.writeToParcel(p, 0);
            p.setDataPosition(0);
            new SuperscriptSpan(p);
        } finally {
            p.recycle();
        }
    }

    @Test
    public void testUpdateMeasureState() {
        // the expected result is: tp.baselineShift += (int) (tp.ascent() / 2)
        SuperscriptSpan superscriptSpan = new SuperscriptSpan();

        TextPaint tp = new TextPaint();
        float ascent = tp.ascent();
        int baselineShift = 100;
        tp.baselineShift = baselineShift;

        superscriptSpan.updateMeasureState(tp);
        assertEquals(baselineShift + (int) (ascent / 2), tp.baselineShift);
    }

    @Test(expected=NullPointerException.class)
    public void testUpdateMeasureStateNull() {
        SuperscriptSpan superscriptSpan = new SuperscriptSpan();

        superscriptSpan.updateMeasureState(null);
    }

    @Test
    public void testUpdateDrawState() {
        // the expected result is: tp.baselineShift += (int) (tp.ascent() / 2)
        SuperscriptSpan superscriptSpan = new SuperscriptSpan();

        TextPaint tp = new TextPaint();
        float ascent = tp.ascent();
        int baselineShift = 50;
        tp.baselineShift = baselineShift;

        superscriptSpan.updateDrawState(tp);
        assertEquals(baselineShift + (int) (ascent / 2), tp.baselineShift);
    }

    @Test(expected=NullPointerException.class)
    public void testUpdateDrawStateNull() {
        SuperscriptSpan superscriptSpan = new SuperscriptSpan();

        superscriptSpan.updateDrawState(null);
    }

    @Test
    public void testDescribeContents() {
        SuperscriptSpan superscriptSpan = new SuperscriptSpan();
        superscriptSpan.describeContents();
    }

    @Test
    public void testGetSpanTypeId() {
        SuperscriptSpan superscriptSpan = new SuperscriptSpan();
        superscriptSpan.getSpanTypeId();
    }

    @Test
    public void testWriteToParcel() {
        Parcel p = Parcel.obtain();
        try {
            SuperscriptSpan superscriptSpan = new SuperscriptSpan();
            superscriptSpan.writeToParcel(p, 0);
            p.setDataPosition(0);
            new SuperscriptSpan(p);
        } finally {
            p.recycle();
        }
    }
}