253 lines
11 KiB
Java
253 lines
11 KiB
Java
/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not
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* use this file except in compliance with the License. You may obtain a copy of
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* the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations under
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* the License.
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*/
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package com.android.inputmethod.latin;
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import android.test.AndroidTestCase;
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public class ResizableIntArrayTests extends AndroidTestCase {
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private static final int DEFAULT_CAPACITY = 48;
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public void testNewInstance() {
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final ResizableIntArray src = new ResizableIntArray(DEFAULT_CAPACITY);
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final int[] array = src.getPrimitiveArray();
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assertEquals("new instance length", 0, src.getLength());
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assertNotNull("new instance array", array);
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assertEquals("new instance array length", DEFAULT_CAPACITY, array.length);
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}
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public void testAdd() {
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final ResizableIntArray src = new ResizableIntArray(DEFAULT_CAPACITY);
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final int[] array = src.getPrimitiveArray();
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int[] array2 = null, array3 = null;
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final int limit = DEFAULT_CAPACITY * 2 + 10;
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for (int i = 0; i < limit; i++) {
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src.add(i);
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assertEquals("length after add " + i, i + 1, src.getLength());
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if (i == DEFAULT_CAPACITY) array2 = src.getPrimitiveArray();
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if (i == DEFAULT_CAPACITY * 2) array3 = src.getPrimitiveArray();
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if (i < DEFAULT_CAPACITY) {
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assertSame("array after add " + i, array, src.getPrimitiveArray());
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} else if (i < DEFAULT_CAPACITY * 2) {
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assertSame("array after add " + i, array2, src.getPrimitiveArray());
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} else if (i < DEFAULT_CAPACITY * 3) {
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assertSame("array after add " + i, array3, src.getPrimitiveArray());
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}
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}
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for (int i = 0; i < limit; i++) {
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assertEquals("value at " + i, i, src.get(i));
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}
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}
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public void testAddAt() {
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final ResizableIntArray src = new ResizableIntArray(DEFAULT_CAPACITY);
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final int limit = DEFAULT_CAPACITY * 10, step = DEFAULT_CAPACITY * 2;
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for (int i = 0; i < limit; i += step) {
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src.add(i, i);
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assertEquals("length after add at " + i, i + 1, src.getLength());
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}
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for (int i = 0; i < limit; i += step) {
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assertEquals("value at " + i, i, src.get(i));
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}
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}
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public void testGet() {
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final ResizableIntArray src = new ResizableIntArray(DEFAULT_CAPACITY);
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try {
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final int value = src.get(0);
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fail("get(0) shouldn't succeed");
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} catch (ArrayIndexOutOfBoundsException e) {
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// success
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}
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try {
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final int value = src.get(DEFAULT_CAPACITY);
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fail("get(DEFAULT_CAPACITY) shouldn't succeed");
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} catch (ArrayIndexOutOfBoundsException e) {
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// success
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}
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final int index = DEFAULT_CAPACITY / 2;
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src.add(index, 100);
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assertEquals("legth after add at " + index, index + 1, src.getLength());
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assertEquals("value after add at " + index, 100, src.get(index));
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assertEquals("value after add at 0", 0, src.get(0));
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try {
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final int value = src.get(src.getLength());
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fail("get(length) shouldn't succeed");
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} catch (ArrayIndexOutOfBoundsException e) {
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// success
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}
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}
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public void testReset() {
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final ResizableIntArray src = new ResizableIntArray(DEFAULT_CAPACITY);
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final int[] array = src.getPrimitiveArray();
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for (int i = 0; i < DEFAULT_CAPACITY; i++) {
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src.add(i);
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assertEquals("length after add " + i, i + 1, src.getLength());
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}
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final int smallerLength = DEFAULT_CAPACITY / 2;
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src.reset(smallerLength);
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final int[] array2 = src.getPrimitiveArray();
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assertEquals("length after reset", 0, src.getLength());
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assertNotSame("array after reset", array, array2);
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int[] array3 = null;
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for (int i = 0; i < DEFAULT_CAPACITY; i++) {
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src.add(i);
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assertEquals("length after add " + i, i + 1, src.getLength());
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if (i == smallerLength) array3 = src.getPrimitiveArray();
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if (i < smallerLength) {
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assertSame("array after add " + i, array2, src.getPrimitiveArray());
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} else if (i < smallerLength * 2) {
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assertSame("array after add " + i, array3, src.getPrimitiveArray());
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}
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}
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}
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public void testSetLength() {
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final ResizableIntArray src = new ResizableIntArray(DEFAULT_CAPACITY);
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final int[] array = src.getPrimitiveArray();
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for (int i = 0; i < DEFAULT_CAPACITY; i++) {
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src.add(i);
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assertEquals("length after add " + i, i + 1, src.getLength());
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}
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final int largerLength = DEFAULT_CAPACITY * 2;
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src.setLength(largerLength);
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final int[] array2 = src.getPrimitiveArray();
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assertEquals("length after larger setLength", largerLength, src.getLength());
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assertNotSame("array after larger setLength", array, array2);
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assertEquals("array length after larger setLength", largerLength, array2.length);
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for (int i = 0; i < DEFAULT_CAPACITY; i++) {
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assertEquals("value at " + i, i, src.get(i));
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}
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for (int i = DEFAULT_CAPACITY; i < largerLength; i++) {
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assertEquals("value at " + i, 0, src.get(i));
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}
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final int smallerLength = DEFAULT_CAPACITY / 2;
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src.setLength(smallerLength);
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final int[] array3 = src.getPrimitiveArray();
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assertEquals("length after smaller setLength", smallerLength, src.getLength());
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assertSame("array after smaller setLength", array2, array3);
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assertEquals("array length after smaller setLength", largerLength, array3.length);
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for (int i = 0; i < smallerLength; i++) {
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assertEquals("value at " + i, i, src.get(i));
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}
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}
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public void testSet() {
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final ResizableIntArray src = new ResizableIntArray(DEFAULT_CAPACITY);
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final int limit = DEFAULT_CAPACITY * 2 + 10;
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for (int i = 0; i < limit; i++) {
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src.add(i);
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}
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final ResizableIntArray dst = new ResizableIntArray(DEFAULT_CAPACITY);
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dst.set(src);
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assertEquals("length after set", dst.getLength(), src.getLength());
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assertSame("array after set", dst.getPrimitiveArray(), src.getPrimitiveArray());
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}
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public void testCopy() {
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final ResizableIntArray src = new ResizableIntArray(DEFAULT_CAPACITY);
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for (int i = 0; i < DEFAULT_CAPACITY; i++) {
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src.add(i);
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}
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final ResizableIntArray dst = new ResizableIntArray(DEFAULT_CAPACITY);
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final int[] array = dst.getPrimitiveArray();
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dst.copy(src);
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assertEquals("length after copy", dst.getLength(), src.getLength());
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assertSame("array after copy", array, dst.getPrimitiveArray());
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assertNotSame("array after copy", dst.getPrimitiveArray(), src.getPrimitiveArray());
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assertArrayEquals("values after copy",
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dst.getPrimitiveArray(), 0, src.getPrimitiveArray(), 0, dst.getLength());
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final int smallerLength = DEFAULT_CAPACITY / 2;
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dst.reset(smallerLength);
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final int[] array2 = dst.getPrimitiveArray();
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dst.copy(src);
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final int[] array3 = dst.getPrimitiveArray();
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assertEquals("length after copy to smaller", dst.getLength(), src.getLength());
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assertNotSame("array after copy to smaller", array2, array3);
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assertNotSame("array after copy to smaller", array3, src.getPrimitiveArray());
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assertArrayEquals("values after copy to smaller",
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dst.getPrimitiveArray(), 0, src.getPrimitiveArray(), 0, dst.getLength());
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}
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public void testAppend() {
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final int srcLen = DEFAULT_CAPACITY;
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final ResizableIntArray src = new ResizableIntArray(srcLen);
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for (int i = 0; i < srcLen; i++) {
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src.add(i);
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}
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final ResizableIntArray dst = new ResizableIntArray(DEFAULT_CAPACITY * 2);
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final int[] array = dst.getPrimitiveArray();
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final int dstLen = DEFAULT_CAPACITY / 2;
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for (int i = 0; i < dstLen; i++) {
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final int value = -i - 1;
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dst.add(value);
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}
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final ResizableIntArray dstCopy = new ResizableIntArray(dst.getLength());
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dstCopy.copy(dst);
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dst.append(src, 0, 0);
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assertEquals("length after append zero", dstLen, dst.getLength());
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assertSame("array after append zero", array, dst.getPrimitiveArray());
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assertArrayEquals("values after append zero",
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dstCopy.getPrimitiveArray(), 0, dst.getPrimitiveArray(), 0, dstLen);
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dst.append(src, 0, srcLen);
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assertEquals("length after append", dstLen + srcLen, dst.getLength());
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assertSame("array after append", array, dst.getPrimitiveArray());
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assertTrue("primitive length after append",
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dst.getPrimitiveArray().length >= dstLen + srcLen);
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assertArrayEquals("original values after append",
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dstCopy.getPrimitiveArray(), 0, dst.getPrimitiveArray(), 0, dstLen);
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assertArrayEquals("appended values after append",
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src.getPrimitiveArray(), 0, dst.getPrimitiveArray(), dstLen, srcLen);
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dst.append(src, 0, srcLen);
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assertEquals("length after 2nd append", dstLen + srcLen * 2, dst.getLength());
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assertNotSame("array after 2nd append", array, dst.getPrimitiveArray());
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assertTrue("primitive length after 2nd append",
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dst.getPrimitiveArray().length >= dstLen + srcLen * 2);
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assertArrayEquals("original values after 2nd append",
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dstCopy.getPrimitiveArray(), 0, dst.getPrimitiveArray(), 0, dstLen);
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assertArrayEquals("appended values after 2nd append",
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src.getPrimitiveArray(), 0, dst.getPrimitiveArray(), dstLen, srcLen);
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assertArrayEquals("appended values after 2nd append",
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src.getPrimitiveArray(), 0, dst.getPrimitiveArray(), dstLen + srcLen, srcLen);
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}
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private static void assertArrayEquals(String message, int[] expecteds, int expectedPos,
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int[] actuals, int actualPos, int length) {
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if (expecteds == null && actuals == null) {
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return;
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}
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if (expecteds == null || actuals == null) {
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fail(message + ": expecteds=" + expecteds + " actuals=" + actuals);
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}
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for (int i = 0; i < length; i++) {
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assertEquals(message + ": element at " + i,
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expecteds[i + expectedPos], actuals[i + actualPos]);
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}
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}
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}
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