/*
- * Copyright 2008 Google Inc.
+ * Copyright 2008 ZXing authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
package com.google.zxing.common;
import com.google.zxing.BarcodeFormat;
+import com.google.zxing.DecodeHintType;
import com.google.zxing.MonochromeBitmapSource;
import com.google.zxing.Reader;
import com.google.zxing.ReaderException;
import junit.framework.TestCase;
import javax.imageio.ImageIO;
+import java.awt.geom.AffineTransform;
+import java.awt.image.AffineTransformOp;
import java.awt.image.BufferedImage;
+import java.awt.image.BufferedImageOp;
import java.io.File;
import java.io.FileInputStream;
import java.io.FilenameFilter;
import java.io.IOException;
import java.io.InputStreamReader;
-import java.net.URL;
+import java.util.Hashtable;
+import java.util.List;
+import java.util.ArrayList;
/**
* @author srowen@google.com (Sean Owen)
+ * @author dswitkin@google.com (Daniel Switkin)
*/
public abstract class AbstractBlackBoxTestCase extends TestCase {
+ protected static final Hashtable<DecodeHintType, Object> TRY_HARDER_HINT;
+ static {
+ TRY_HARDER_HINT = new Hashtable<DecodeHintType, Object>();
+ TRY_HARDER_HINT.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
+ }
+
private static final FilenameFilter IMAGE_NAME_FILTER = new FilenameFilter() {
public boolean accept(File dir, String name) {
String lowerCase = name.toLowerCase();
- return
- lowerCase.endsWith(".jpg") || lowerCase.endsWith(".jpeg") ||
- lowerCase.endsWith(".gif") || lowerCase.endsWith(".png") ||
- lowerCase.endsWith(".url");
+ return lowerCase.endsWith(".jpg") || lowerCase.endsWith(".jpeg") ||
+ lowerCase.endsWith(".gif") || lowerCase.endsWith(".png");
}
};
+ private static class TestResult {
+ private final int mustPassCount;
+ private final int tryHarderCount;
+ private final float rotation;
+
+ TestResult(int mustPassCount, int tryHarderCount, float rotation) {
+ this.mustPassCount = mustPassCount;
+ this.tryHarderCount = tryHarderCount;
+ this.rotation = rotation;
+ }
+ public int getMustPassCount() {
+ return mustPassCount;
+ }
+ public int getTryHarderCount() {
+ return tryHarderCount;
+ }
+ public float getRotation() {
+ return rotation;
+ }
+ }
+
private final File testBase;
private final Reader barcodeReader;
- private final double passPercent;
private final BarcodeFormat expectedFormat;
+ private final List<TestResult> testResults;
protected AbstractBlackBoxTestCase(File testBase,
Reader barcodeReader,
- double passPercent,
BarcodeFormat expectedFormat) {
this.testBase = testBase;
this.barcodeReader = barcodeReader;
- this.passPercent = passPercent;
this.expectedFormat = expectedFormat;
+ testResults = new ArrayList<TestResult>();
}
- public void testBlackBox() throws IOException {
+ /**
+ * Adds a new test for the current directory of images.
+ *
+ * @param mustPassCount The number of images which must decode for the test to pass.
+ * @param tryHarderCount The number of images which must pass using the try harder flag.
+ * @param rotation The rotation in degrees clockwise to use for this test.
+ */
+ protected void addTest(int mustPassCount, int tryHarderCount, float rotation) {
+ testResults.add(new TestResult(mustPassCount, tryHarderCount, rotation));
+ }
+ protected File[] getImageFiles() {
assertTrue("Please run from the 'core' directory", testBase.exists());
+ return testBase.listFiles(IMAGE_NAME_FILTER);
+ }
+
+ protected Reader getReader() {
+ return barcodeReader;
+ }
+
+ public void testBlackBox() throws IOException {
+ assertFalse(testResults.isEmpty());
- File[] imageFiles = testBase.listFiles(IMAGE_NAME_FILTER);
- int passedCount = 0;
+ File[] imageFiles = getImageFiles();
+ int testCount = testResults.size();
+ int[] passedCounts = new int[testCount];
+ int[] tryHarderCounts = new int[testCount];
for (File testImage : imageFiles) {
System.out.println("Starting " + testImage.getAbsolutePath());
- BufferedImage image;
- if (testImage.getName().endsWith(".url")) {
- String urlString = readFileAsString(testImage);
- image = ImageIO.read(new URL(urlString));
- } else {
- image = ImageIO.read(testImage);
- }
- MonochromeBitmapSource source = new BufferedImageMonochromeBitmapSource(image);
- Result result;
- try {
- result = barcodeReader.decode(source);
- } catch (ReaderException re) {
- System.out.println(re);
- continue;
- }
-
- assertEquals(expectedFormat, result.getBarcodeFormat());
+ BufferedImage image = ImageIO.read(testImage);
String testImageFileName = testImage.getName();
- File expectedTextFile =
- new File(testBase, testImageFileName.substring(0, testImageFileName.indexOf('.')) + ".txt");
+ File expectedTextFile = new File(testBase,
+ testImageFileName.substring(0, testImageFileName.indexOf('.')) + ".txt");
String expectedText = readFileAsString(expectedTextFile);
- String resultText = result.getText();
- if (expectedText.equals(resultText)) {
- passedCount++;
- } else {
- System.out.println("Mismatch: expected '" + expectedText + "' but got '" + resultText + '\'');
+ for (int x = 0; x < testCount; x++) {
+ float rotation = testResults.get(x).getRotation();
+ BufferedImage rotatedImage = rotateImage(image, rotation);
+ MonochromeBitmapSource source = new BufferedImageMonochromeBitmapSource(rotatedImage);
+ if (decode(source, rotation, expectedText, false)) {
+ passedCounts[x]++;
+ }
+ if (decode(source, rotation, expectedText, true)) {
+ tryHarderCounts[x]++;
+ }
}
+ }
+
+ // Print the results of all tests first
+ for (int x = 0; x < testCount; x++) {
+ System.out.println("Rotation " + testResults.get(x).getRotation() + " degrees:");
+ System.out.println(" " + passedCounts[x] + " of " + imageFiles.length + " images passed ("
+ + testResults.get(x).getMustPassCount() + " required)");
+ System.out.println(" " + tryHarderCounts[x] + " of " + imageFiles.length +
+ " images passed with try harder (" + testResults.get(x).getTryHarderCount() +
+ " required)");
+ }
+
+ // Then run through again and assert if any failed
+ for (int x = 0; x < testCount; x++) {
+ assertTrue("Rotation " + testResults.get(x).getRotation() +
+ " degrees: Too many images failed",
+ passedCounts[x] >= testResults.get(x).getMustPassCount());
+ assertTrue("Try harder, Rotation " + testResults.get(x).getRotation() +
+ " degrees: Too many images failed",
+ tryHarderCounts[x] >= testResults.get(x).getTryHarderCount());
+ }
+ }
+ private boolean decode(MonochromeBitmapSource source, float rotation, String expectedText,
+ boolean tryHarder) {
+ Result result;
+ String suffix = " (" + (tryHarder ? "try harder, " : "") + "rotation: " + rotation + ')';
+
+ try {
+ result = barcodeReader.decode(source, tryHarder ? TRY_HARDER_HINT : null);
+ } catch (ReaderException re) {
+ System.out.println(re + suffix);
+ return false;
+ }
+
+ if (!expectedFormat.equals(result.getBarcodeFormat())) {
+ System.out.println("Format mismatch: expected '" + expectedFormat + "' but got '" +
+ result.getBarcodeFormat() + "'" + suffix);
+ return false;
}
- System.out.println(passedCount + " of " + imageFiles.length + " images passed");
- assertTrue("Too many images failed", passedCount >= (int) (imageFiles.length * passPercent));
+ String resultText = result.getText();
+ if (!expectedText.equals(resultText)) {
+ System.out.println("Mismatch: expected '" + expectedText + "' but got '" + resultText +
+ "'" + suffix);
+ return false;
+ }
+ return true;
}
private static String readFileAsString(File file) throws IOException {
- StringBuilder result = new StringBuilder();
- InputStreamReader reader = new InputStreamReader(new FileInputStream(file), "UTF-8");
+ StringBuilder result = new StringBuilder((int) file.length());
+ InputStreamReader reader = new InputStreamReader(new FileInputStream(file), "UTF8");
try {
char[] buffer = new char[256];
int charsRead;
return result.toString();
}
+ protected static BufferedImage rotateImage(BufferedImage original, float degrees) {
+ if (degrees == 0.0f) {
+ return original;
+ } else {
+ AffineTransform at = new AffineTransform();
+ at.rotate(Math.toRadians(degrees), original.getWidth() / 2.0f, original.getHeight() / 2.0f);
+ BufferedImageOp op = new AffineTransformOp(at, AffineTransformOp.TYPE_BICUBIC);
+ return op.filter(original, null);
+ }
+ }
+
}
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projects / zxing.git / blobdiff