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/*
* 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 dalvik.system;
import java.lang.reflect.Array;
import junit.framework.TestCase;
/**
* Test VMRuntime behavior.
*/
public final class VMRuntimeTest extends TestCase {
private void doTestNewNonMovableArray(Class<?> componentType, int step, int maxLength) {
// Can't create negative sized arrays.
try {
Object array = VMRuntime.getRuntime().newNonMovableArray(componentType, -1);
assertTrue(false);
} catch (NegativeArraySizeException expected) {
}
try {
Object array = VMRuntime.getRuntime().newNonMovableArray(componentType, Integer.MIN_VALUE);
assertTrue(false);
} catch (NegativeArraySizeException expected) {
}
// Allocate arrays in a loop and check their properties.
for (int i = 0; i <= maxLength; i += step) {
Object array = VMRuntime.getRuntime().newNonMovableArray(componentType, i);
assertTrue(array.getClass().isArray());
assertEquals(array.getClass().getComponentType(), componentType);
assertEquals(Array.getLength(array), i);
}
}
public void testNewNonMovableArray() {
// Can't create arrays with no component type.
try {
Object array = VMRuntime.getRuntime().newNonMovableArray(null, 0);
assertTrue(false);
} catch (NullPointerException expected) {
}
// Can't create arrays of void.
try {
Object array = VMRuntime.getRuntime().newNonMovableArray(void.class, 0);
assertTrue(false);
} catch (NoClassDefFoundError expected) {
}
int maxLengthForLoop = 16 * 1024;
int step = 67;
doTestNewNonMovableArray(boolean.class, step, maxLengthForLoop);
doTestNewNonMovableArray(byte.class, step, maxLengthForLoop);
doTestNewNonMovableArray(char.class, step, maxLengthForLoop);
doTestNewNonMovableArray(short.class, step, maxLengthForLoop);
doTestNewNonMovableArray(int.class, step, maxLengthForLoop);
doTestNewNonMovableArray(long.class, step, maxLengthForLoop);
doTestNewNonMovableArray(float.class, step, maxLengthForLoop);
doTestNewNonMovableArray(double.class, step, maxLengthForLoop);
doTestNewNonMovableArray(Object.class, step, maxLengthForLoop);
doTestNewNonMovableArray(Number.class, step, maxLengthForLoop);
doTestNewNonMovableArray(String.class, step, maxLengthForLoop);
doTestNewNonMovableArray(Runnable.class, step, maxLengthForLoop);
}
private void doTestNewUnpaddedArray(Class<?> componentType, int step, int maxLength) {
// Can't create negative sized arrays.
try {
Object array = VMRuntime.getRuntime().newUnpaddedArray(componentType, -1);
assertTrue(false);
} catch (NegativeArraySizeException expected) {
}
try {
Object array = VMRuntime.getRuntime().newUnpaddedArray(componentType, Integer.MIN_VALUE);
assertTrue(false);
} catch (NegativeArraySizeException expected) {
}
// Allocate arrays in a loop and check their properties.
for (int i = 0; i <= maxLength; i += step) {
Object array = VMRuntime.getRuntime().newUnpaddedArray(componentType, i);
assertTrue(array.getClass().isArray());
assertEquals(array.getClass().getComponentType(), componentType);
assertTrue(Array.getLength(array) >= i);
}
}
public void testNewUnpaddedArray() {
// Can't create arrays with no component type.
try {
Object array = VMRuntime.getRuntime().newUnpaddedArray(null, 0);
assertTrue(false);
} catch (NullPointerException expected) {
}
// Can't create arrays of void.
try {
Object array = VMRuntime.getRuntime().newUnpaddedArray(void.class, 0);
assertTrue(false);
} catch (NoClassDefFoundError expected) {
}
int maxLengthForLoop = 16 * 1024;
int step = 67;
doTestNewUnpaddedArray(boolean.class, step, maxLengthForLoop);
doTestNewUnpaddedArray(byte.class, step, maxLengthForLoop);
doTestNewUnpaddedArray(char.class, step, maxLengthForLoop);
doTestNewUnpaddedArray(short.class, step, maxLengthForLoop);
doTestNewUnpaddedArray(int.class, step, maxLengthForLoop);
doTestNewUnpaddedArray(long.class, step, maxLengthForLoop);
doTestNewUnpaddedArray(float.class, step, maxLengthForLoop);
doTestNewUnpaddedArray(double.class, step, maxLengthForLoop);
doTestNewUnpaddedArray(Object.class, step, maxLengthForLoop);
doTestNewUnpaddedArray(Number.class, step, maxLengthForLoop);
doTestNewUnpaddedArray(String.class, step, maxLengthForLoop);
doTestNewUnpaddedArray(Runnable.class, step, maxLengthForLoop);
}
}
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