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moved java files for pre-convert
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Henry Schimke
347
java_test/java/com/google/zxing/common/BitMatrixTestCase.java
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347
java_test/java/com/google/zxing/common/BitMatrixTestCase.java
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/*
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* Copyright 2007 ZXing authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of 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,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.zxing.common;
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import org.junit.Assert;
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import org.junit.Test;
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import java.util.Arrays;
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/**
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* @author Sean Owen
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* @author dswitkin@google.com (Daniel Switkin)
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*/
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public final class BitMatrixTestCase extends Assert {
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private static final int[] BIT_MATRIX_POINTS = { 1, 2, 2, 0, 3, 1 };
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@Test
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public void testGetSet() {
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BitMatrix matrix = new BitMatrix(33);
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assertEquals(33, matrix.getHeight());
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for (int y = 0; y < 33; y++) {
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for (int x = 0; x < 33; x++) {
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if (y * x % 3 == 0) {
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matrix.set(x, y);
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}
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}
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}
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for (int y = 0; y < 33; y++) {
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for (int x = 0; x < 33; x++) {
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assertEquals(y * x % 3 == 0, matrix.get(x, y));
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}
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}
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}
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@Test
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public void testSetRegion() {
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BitMatrix matrix = new BitMatrix(5);
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matrix.setRegion(1, 1, 3, 3);
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for (int y = 0; y < 5; y++) {
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for (int x = 0; x < 5; x++) {
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assertEquals(y >= 1 && y <= 3 && x >= 1 && x <= 3, matrix.get(x, y));
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}
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}
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}
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@Test
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public void testEnclosing() {
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BitMatrix matrix = new BitMatrix(5);
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assertNull(matrix.getEnclosingRectangle());
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matrix.setRegion(1, 1, 1, 1);
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assertArrayEquals(new int[] { 1, 1, 1, 1 }, matrix.getEnclosingRectangle());
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matrix.setRegion(1, 1, 3, 2);
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assertArrayEquals(new int[] { 1, 1, 3, 2 }, matrix.getEnclosingRectangle());
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matrix.setRegion(0, 0, 5, 5);
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assertArrayEquals(new int[] { 0, 0, 5, 5 }, matrix.getEnclosingRectangle());
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}
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@Test
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public void testOnBit() {
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BitMatrix matrix = new BitMatrix(5);
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assertNull(matrix.getTopLeftOnBit());
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assertNull(matrix.getBottomRightOnBit());
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matrix.setRegion(1, 1, 1, 1);
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assertArrayEquals(new int[] { 1, 1 }, matrix.getTopLeftOnBit());
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assertArrayEquals(new int[] { 1, 1 }, matrix.getBottomRightOnBit());
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matrix.setRegion(1, 1, 3, 2);
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assertArrayEquals(new int[] { 1, 1 }, matrix.getTopLeftOnBit());
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assertArrayEquals(new int[] { 3, 2 }, matrix.getBottomRightOnBit());
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matrix.setRegion(0, 0, 5, 5);
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assertArrayEquals(new int[] { 0, 0 }, matrix.getTopLeftOnBit());
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assertArrayEquals(new int[] { 4, 4 }, matrix.getBottomRightOnBit());
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}
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@Test
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public void testRectangularMatrix() {
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BitMatrix matrix = new BitMatrix(75, 20);
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assertEquals(75, matrix.getWidth());
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assertEquals(20, matrix.getHeight());
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matrix.set(10, 0);
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matrix.set(11, 1);
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matrix.set(50, 2);
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matrix.set(51, 3);
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matrix.flip(74, 4);
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matrix.flip(0, 5);
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// Should all be on
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assertTrue(matrix.get(10, 0));
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assertTrue(matrix.get(11, 1));
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assertTrue(matrix.get(50, 2));
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assertTrue(matrix.get(51, 3));
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assertTrue(matrix.get(74, 4));
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assertTrue(matrix.get(0, 5));
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// Flip a couple back off
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matrix.flip(50, 2);
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matrix.flip(51, 3);
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assertFalse(matrix.get(50, 2));
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assertFalse(matrix.get(51, 3));
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}
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@Test
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public void testRectangularSetRegion() {
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BitMatrix matrix = new BitMatrix(320, 240);
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assertEquals(320, matrix.getWidth());
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assertEquals(240, matrix.getHeight());
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matrix.setRegion(105, 22, 80, 12);
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// Only bits in the region should be on
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for (int y = 0; y < 240; y++) {
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for (int x = 0; x < 320; x++) {
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assertEquals(y >= 22 && y < 34 && x >= 105 && x < 185, matrix.get(x, y));
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}
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}
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}
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@Test
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public void testGetRow() {
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BitMatrix matrix = new BitMatrix(102, 5);
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for (int x = 0; x < 102; x++) {
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if ((x & 0x03) == 0) {
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matrix.set(x, 2);
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}
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}
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// Should allocate
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BitArray array = matrix.getRow(2, null);
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assertEquals(102, array.getSize());
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// Should reallocate
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BitArray array2 = new BitArray(60);
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array2 = matrix.getRow(2, array2);
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assertEquals(102, array2.getSize());
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// Should use provided object, with original BitArray size
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BitArray array3 = new BitArray(200);
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array3 = matrix.getRow(2, array3);
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assertEquals(200, array3.getSize());
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for (int x = 0; x < 102; x++) {
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boolean on = (x & 0x03) == 0;
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assertEquals(on, array.get(x));
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assertEquals(on, array2.get(x));
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assertEquals(on, array3.get(x));
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}
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}
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@Test
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public void testRotate90Simple() {
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BitMatrix matrix = new BitMatrix(3, 3);
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matrix.set(0, 0);
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matrix.set(0, 1);
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matrix.set(1, 2);
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matrix.set(2, 1);
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matrix.rotate90();
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assertTrue(matrix.get(0, 2));
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assertTrue(matrix.get(1, 2));
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assertTrue(matrix.get(2, 1));
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assertTrue(matrix.get(1, 0));
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}
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@Test
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public void testRotate180Simple() {
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BitMatrix matrix = new BitMatrix(3, 3);
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matrix.set(0, 0);
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matrix.set(0, 1);
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matrix.set(1, 2);
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matrix.set(2, 1);
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matrix.rotate180();
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assertTrue(matrix.get(2, 2));
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assertTrue(matrix.get(2, 1));
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assertTrue(matrix.get(1, 0));
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assertTrue(matrix.get(0, 1));
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}
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@Test
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public void testRotate180() {
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testRotate180(7, 4);
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testRotate180(7, 5);
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testRotate180(8, 4);
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testRotate180(8, 5);
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}
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@Test
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public void testParse() {
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BitMatrix emptyMatrix = new BitMatrix(3, 3);
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BitMatrix fullMatrix = new BitMatrix(3, 3);
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fullMatrix.setRegion(0, 0, 3, 3);
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BitMatrix centerMatrix = new BitMatrix(3, 3);
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centerMatrix.setRegion(1, 1, 1, 1);
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BitMatrix emptyMatrix24 = new BitMatrix(2, 4);
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assertEquals(emptyMatrix, BitMatrix.parse(" \n \n \n", "x", " "));
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assertEquals(emptyMatrix, BitMatrix.parse(" \n \r\r\n \n\r", "x", " "));
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assertEquals(emptyMatrix, BitMatrix.parse(" \n \n ", "x", " "));
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assertEquals(fullMatrix, BitMatrix.parse("xxx\nxxx\nxxx\n", "x", " "));
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assertEquals(centerMatrix, BitMatrix.parse(" \n x \n \n", "x", " "));
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assertEquals(centerMatrix, BitMatrix.parse(" \n x \n \n", "x ", " "));
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try {
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assertEquals(centerMatrix, BitMatrix.parse(" \n xy\n \n", "x", " "));
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fail();
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} catch (IllegalArgumentException ex) {
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// good
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}
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assertEquals(emptyMatrix24, BitMatrix.parse(" \n \n \n \n", "x", " "));
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assertEquals(centerMatrix, BitMatrix.parse(centerMatrix.toString("x", "."), "x", "."));
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}
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@Test
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public void testParseBoolean() {
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BitMatrix emptyMatrix = new BitMatrix(3, 3);
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BitMatrix fullMatrix = new BitMatrix(3, 3);
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fullMatrix.setRegion(0, 0, 3, 3);
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BitMatrix centerMatrix = new BitMatrix(3, 3);
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centerMatrix.setRegion(1, 1, 1, 1);
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BitMatrix emptyMatrix24 = new BitMatrix(2, 4);
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boolean[][] matrix = new boolean[3][3];
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assertEquals(emptyMatrix, BitMatrix.parse(matrix));
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matrix[1][1] = true;
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assertEquals(centerMatrix, BitMatrix.parse(matrix));
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for (boolean[] arr : matrix) {
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Arrays.fill(arr, true);
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}
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assertEquals(fullMatrix, BitMatrix.parse(matrix));
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}
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@Test
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public void testUnset() {
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BitMatrix emptyMatrix = new BitMatrix(3, 3);
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BitMatrix matrix = emptyMatrix.clone();
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matrix.set(1, 1);
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assertNotEquals(emptyMatrix, matrix);
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matrix.unset(1, 1);
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assertEquals(emptyMatrix, matrix);
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matrix.unset(1, 1);
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assertEquals(emptyMatrix, matrix);
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}
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@Test
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public void testXOR() {
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BitMatrix emptyMatrix = new BitMatrix(3, 3);
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BitMatrix fullMatrix = new BitMatrix(3, 3);
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fullMatrix.setRegion(0, 0, 3, 3);
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BitMatrix centerMatrix = new BitMatrix(3, 3);
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centerMatrix.setRegion(1, 1, 1, 1);
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BitMatrix invertedCenterMatrix = fullMatrix.clone();
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invertedCenterMatrix.unset(1, 1);
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BitMatrix badMatrix = new BitMatrix(4, 4);
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testXOR(emptyMatrix, emptyMatrix, emptyMatrix);
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testXOR(emptyMatrix, centerMatrix, centerMatrix);
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testXOR(emptyMatrix, fullMatrix, fullMatrix);
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testXOR(centerMatrix, emptyMatrix, centerMatrix);
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testXOR(centerMatrix, centerMatrix, emptyMatrix);
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testXOR(centerMatrix, fullMatrix, invertedCenterMatrix);
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testXOR(invertedCenterMatrix, emptyMatrix, invertedCenterMatrix);
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testXOR(invertedCenterMatrix, centerMatrix, fullMatrix);
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testXOR(invertedCenterMatrix, fullMatrix, centerMatrix);
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testXOR(fullMatrix, emptyMatrix, fullMatrix);
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testXOR(fullMatrix, centerMatrix, invertedCenterMatrix);
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testXOR(fullMatrix, fullMatrix, emptyMatrix);
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try {
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emptyMatrix.clone().xor(badMatrix);
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fail();
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} catch (IllegalArgumentException ex) {
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// good
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}
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try {
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badMatrix.clone().xor(emptyMatrix);
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fail();
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} catch (IllegalArgumentException ex) {
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// good
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}
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}
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public static String matrixToString(BitMatrix result) {
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assertEquals(1, result.getHeight());
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StringBuilder builder = new StringBuilder(result.getWidth());
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for (int i = 0; i < result.getWidth(); i++) {
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builder.append(result.get(i, 0) ? '1' : '0');
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}
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return builder.toString();
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}
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private static void testXOR(BitMatrix dataMatrix, BitMatrix flipMatrix, BitMatrix expectedMatrix) {
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BitMatrix matrix = dataMatrix.clone();
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matrix.xor(flipMatrix);
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assertEquals(expectedMatrix, matrix);
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}
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private static void testRotate180(int width, int height) {
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BitMatrix input = getInput(width, height);
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input.rotate180();
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BitMatrix expected = getExpected(width, height);
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for (int y = 0; y < height; y++) {
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for (int x = 0; x < width; x++) {
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assertEquals("(" + x + ',' + y + ')', expected.get(x, y), input.get(x, y));
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}
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}
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}
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private static BitMatrix getExpected(int width, int height) {
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BitMatrix result = new BitMatrix(width, height);
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for (int i = 0; i < BIT_MATRIX_POINTS.length; i += 2) {
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result.set(width - 1 - BIT_MATRIX_POINTS[i], height - 1 - BIT_MATRIX_POINTS[i + 1]);
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}
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return result;
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}
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private static BitMatrix getInput(int width, int height) {
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BitMatrix result = new BitMatrix(width, height);
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for (int i = 0; i < BIT_MATRIX_POINTS.length; i += 2) {
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result.set(BIT_MATRIX_POINTS[i], BIT_MATRIX_POINTS[i + 1]);
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}
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return result;
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}
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}
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