/*
* Copyright (C) 2014 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 com.android.mediaframeworktest.unit;
import android.test.suitebuilder.annotation.SmallTest;
import android.util.Range;
import android.util.Rational;
/**
* <pre>
* adb shell am instrument \
* -e class 'com.android.mediaframeworktest.unit.RangeTest' \
* -w com.android.mediaframeworktest/.MediaFrameworkUnitTestRunner
* </pre>
*/
public class RangeTest extends junit.framework.TestCase {
@SmallTest
public void testConstructor() {
// Trivial, same range
Range<Integer> intRange = new Range<Integer>(1, 1);
assertLower(intRange, 1);
assertUpper(intRange, 1);
// Different values in range
Range<Integer> intRange2 = new Range<Integer>(100, 200);
assertLower(intRange2, 100);
assertUpper(intRange2, 200);
Range<Float> floatRange = new Range<Float>(Float.NEGATIVE_INFINITY,
Float.POSITIVE_INFINITY);
assertLower(floatRange, Float.NEGATIVE_INFINITY);
assertUpper(floatRange, Float.POSITIVE_INFINITY);
}
@SmallTest
public void testIllegalValues() {
// Test NPEs
try {
new Range<Integer>(null, null);
fail("Expected exception to be thrown for (null, null)");
} catch (NullPointerException e) {
// OK: both args are null
}
try {
new Range<Integer>(null, 0);
fail("Expected exception to be thrown for (null, 0)");
} catch (NullPointerException e) {
// OK: left arg is null
}
try {
new Range<Integer>(0, null);
fail("Expected exception to be thrown for (0, null)");
} catch (NullPointerException e) {
// OK: right arg is null
}
// Test IAEs
try {
new Range<Integer>(50, -50);
fail("Expected exception to be thrown for (50, -50)");
} catch (IllegalArgumentException e) {
// OK: 50 > -50 so it fails
}
try {
new Range<Float>(0.0f, Float.NEGATIVE_INFINITY);
fail("Expected exception to be thrown for (0.0f, -Infinity)");
} catch (IllegalArgumentException e) {
// OK: 0.0f is > NEGATIVE_INFINITY, so it fails
}
}
@SmallTest
public void testEquals() {
Range<Float> oneHalf = Range.create(1.0f, 2.0f);
Range<Float> oneHalf2 = new Range<Float>(1.0f, 2.0f);
assertEquals(oneHalf, oneHalf2);
assertHashCodeEquals(oneHalf, oneHalf2);
Range<Float> twoThirds = new Range<Float>(2.0f, 3.0f);
Range<Float> twoThirds2 = Range.create(2.0f, 3.0f);
assertEquals(twoThirds, twoThirds2);
assertHashCodeEquals(twoThirds, twoThirds2);
Range<Rational> negativeOneTenthPositiveOneTenth =
new Range<Rational>(new Rational(-1, 10), new Rational(1, 10));
Range<Rational> negativeOneTenthPositiveOneTenth2 =
Range.create(new Rational(-1, 10), new Rational(1, 10));
assertEquals(negativeOneTenthPositiveOneTenth, negativeOneTenthPositiveOneTenth2);
assertHashCodeEquals(negativeOneTenthPositiveOneTenth, negativeOneTenthPositiveOneTenth2);
}
@SmallTest
public void testInRange() {
Range<Integer> hundredOneTwo = Range.create(100, 200);
assertInRange(hundredOneTwo, 100);
assertInRange(hundredOneTwo, 200);
assertInRange(hundredOneTwo, 150);
assertOutOfRange(hundredOneTwo, 99);
assertOutOfRange(hundredOneTwo, 201);
assertOutOfRange(hundredOneTwo, 100000);
Range<Float> infinities = Range.create(Float.NEGATIVE_INFINITY, Float.POSITIVE_INFINITY);
assertInRange(infinities, Float.NEGATIVE_INFINITY);
assertInRange(infinities, Float.POSITIVE_INFINITY);
assertInRange(infinities, 0.0f);
assertOutOfRange(infinities, Float.NaN);
Range<Rational> negativeOneTenthPositiveOneTenth =
new Range<Rational>(new Rational(-1, 10), new Rational(1, 10));
assertInRange(negativeOneTenthPositiveOneTenth, new Rational(-1, 10));
assertInRange(negativeOneTenthPositiveOneTenth, new Rational(1, 10));
assertInRange(negativeOneTenthPositiveOneTenth, Rational.ZERO);
assertOutOfRange(negativeOneTenthPositiveOneTenth, new Rational(-100, 1));
assertOutOfRange(negativeOneTenthPositiveOneTenth, new Rational(100, 1));
}
private static <T extends Comparable<? super T>> void assertInRange(Range<T> object, T needle) {
assertAction("in-range", object, needle, true, object.contains(needle));
}
private static <T extends Comparable<? super T>> void assertOutOfRange(Range<T> object,
T needle) {
assertAction("out-of-range", object, needle, false, object.contains(needle));
}
private static <T extends Comparable<? super T>> void assertUpper(Range<T> object, T expected) {
assertAction("upper", object, expected, object.getUpper());
}
private static <T extends Comparable<? super T>> void assertLower(Range<T> object, T expected) {
assertAction("lower", object, expected, object.getLower());
}
private static <T, T2> void assertAction(String action, T object, T2 expected,
T2 actual) {
assertEquals("Expected " + object + " " + action + " to be ",
expected, actual);
}
private static <T, T2> void assertAction(String action, T object, T2 needle, boolean expected,
boolean actual) {
String expectedMessage = expected ? action : ("not " + action);
assertEquals("Expected " + needle + " to be " + expectedMessage + " of " + object,
expected, actual);
}
private static <T extends Comparable<? super T>> void assertHashCodeEquals(
Range<T> left, Range<T> right) {
assertEquals("Left hash code for " + left +
" expected to be equal to right hash code for " + right,
left.hashCode(), right.hashCode());
}
}