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ClasspathScannerTests.java
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/
ClasspathScannerTests.java
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/*
* Copyright 2015 the original author or authors.
*
* All rights reserved. This program and the accompanying materials are
* made available under the terms of the Eclipse Public License v1.0 which
* accompanies this distribution and is available at
*
* http://www.eclipse.org/legal/epl-v10.html
*/
package org.junit.gen5.commons.util;
import java.io.File;
import java.util.Arrays;
import java.util.List;
import java.util.Optional;
import java.util.function.Predicate;
import org.junit.Assert;
import org.junit.Assume;
import org.junit.Before;
import org.junit.Test;
public class ClasspathScannerTests {
private ClasspathScanner classpathScanner;
@Before
public void init() {
classpathScanner = new ClasspathScanner(ReflectionUtils::getDefaultClassLoader, ReflectionUtils::loadClass);
}
@Test
public void findAllClassesInThisPackage() throws Exception {
List<Class<?>> classes = classpathScanner.scanForClassesInPackage("org.junit.gen5.commons", clazz -> true);
Assert.assertTrue("Should be at least 20 classes", classes.size() >= 20);
Assert.assertTrue(classes.contains(NestedClassToBeFound.class));
Assert.assertTrue(classes.contains(MemberClassToBeFound.class));
}
@Test
public void findAllClassesInThisPackageWithFilter() throws Exception {
Predicate<Class<?>> thisClassOnly = clazz -> clazz == ClasspathScannerTests.class;
List<Class<?>> classes = classpathScanner.scanForClassesInPackage("org.junit.gen5.commons", thisClassOnly);
Assert.assertSame(ClasspathScannerTests.class, classes.get(0));
}
@Test
public void isPackage() throws Exception {
Assert.assertTrue(classpathScanner.isPackage("org.junit.gen5.commons"));
Assert.assertFalse(classpathScanner.isPackage("org.doesnotexist"));
}
@Test
public void findAllClassesInClasspathRoot() throws Exception {
Predicate<Class<?>> thisClassOnly = clazz -> clazz == ClasspathScannerTests.class;
File root = getTestClasspathRoot();
List<Class<?>> classes = classpathScanner.scanForClassesInClasspathRoot(root, thisClassOnly);
Assert.assertSame(ClasspathScannerTests.class, classes.get(0));
}
@Test
public void findAllClassesInClasspathRootWithFilter() throws Exception {
File root = getTestClasspathRoot();
List<Class<?>> classes = classpathScanner.scanForClassesInClasspathRoot(root, clazz -> true);
Assert.assertTrue("Should be at least 20 classes", classes.size() >= 20);
Assert.assertTrue(classes.contains(ClasspathScannerTests.class));
}
private File getTestClasspathRoot() {
String fullClassPath = System.getProperty("java.class.path");
Optional<String> testRoot = Arrays.stream(fullClassPath.split(File.pathSeparator)).filter(
s -> s.endsWith("/classes/test")).findFirst();
Assume.assumeTrue("There should be a test root", testRoot.isPresent());
return new File(testRoot.get());
}
class MemberClassToBeFound {
}
static class NestedClassToBeFound {
}
}