PercentageTipTest.java

/*
 * Copyright (C) 2014 SCVNGR, Inc. d/b/a LevelUp
 *
 * 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 com.scvngr.levelup.core.model.tip;

import android.test.MoreAsserts;
import android.test.suitebuilder.annotation.SmallTest;

import com.scvngr.levelup.core.test.ParcelTestUtils;
import com.scvngr.levelup.core.test.SupportAndroidTestCase;

/**
 * Tests {@link com.scvngr.levelup.core.model.tip.PercentageTip}.
 */
public final class PercentageTipTest extends SupportAndroidTestCase {

    /**
     * Test equals and hash code.
     */
    @SmallTest
    public void testEqualsAndHashCode() {
        final PercentageTip tip1 = new PercentageTip(0);
        final PercentageTip tip2 = new PercentageTip(50);

        MoreAsserts.checkEqualsAndHashCodeMethods(tip1, tip1, true);
        MoreAsserts.checkEqualsAndHashCodeMethods(tip1, tip2, false);
    }

    /**
     * Test {@link com.scvngr.levelup.core.model.tip.PercentageTip#getEncodedValue} gets the value used to encode the tip.
     */
    @SmallTest
    public void testGetEncodedValue() {
        // Minimum
        {
            final int value = 0;
            final PercentageTip tip = new PercentageTip(value);
            assertEquals(PercentageTip.MINIMUM_VALUE_WITH_OFFSET_DECIMAL, tip.getEncodedValue());
            assertEquals(PercentageTip.MINIMUM_VALUE_WITH_OFFSET_DECIMAL, 0);
        }

        // Typical
        {
            final int value = 250;
            final PercentageTip tip = new PercentageTip(value);
            assertEquals(value, tip.getValue());
            assertEquals(PercentageTip.MINIMUM_VALUE_WITH_OFFSET_DECIMAL + value, tip.getEncodedValue());
        }

        // Too small
        try {
            new PercentageTip(-1);
            fail();
        } catch (final IllegalArgumentException e) {
            // Intentionally blank
        }

        // Too large
        try {
            new PercentageTip(PercentageTip.MAXIMUM_VALUE_WITH_OFFSET_DECIMAL
                    - PercentageTip.MINIMUM_VALUE_WITH_OFFSET_DECIMAL + 1);
            fail();
        } catch (final IllegalArgumentException e) {
            // Intentionally blank
        }
    }

    /**
     * Test {@link com.scvngr.levelup.core.model.tip.PercentageTip#getValue} gets the value used to construct the tip.
     */
    @SmallTest
    public void testGetValue() {
        assertEquals(0, new PercentageTip(0).getValue());

        final int value = 25;
        assertEquals(value, new PercentageTip(value).getValue());
    }

    /**
     * Test {@link android.os.Parcelable} implementation.
     */
    @SmallTest
    public void testParcel() {
        ParcelTestUtils.assertParcelableRoundtrips(new PercentageTip(0));
        ParcelTestUtils.assertParcelableRoundtrips(new PercentageTip(50));
    }

    /**
     * Test {@link com.scvngr.levelup.core.model.tip.PercentageTip#withValue} gets a new {@link com.scvngr.levelup.core.model.tip.PercentageTip} with the specified
     * value.
     */
    @SmallTest
    public void testWithValue() {
        final PercentageTip zero = new PercentageTip(0);
        final PercentageTip one = zero.withValue(1);

        assertEquals(0, zero.getValue());
        assertEquals(1, one.getValue());
        MoreAsserts.assertNotEqual(zero, one);
    }
}