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////////////////////////////////////////////////////////////////////////////////
// checkstyle: Checks Java source code for adherence to a set of rules.
// Copyright (C) 2001-2017 the original author or authors.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
////////////////////////////////////////////////////////////////////////////////
package com.puppycrawl.tools.checkstyle;
import static com.puppycrawl.tools.checkstyle.utils.CommonUtils.EMPTY_BYTE_ARRAY;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.powermock.api.mockito.PowerMockito.mock;
import static org.powermock.api.mockito.PowerMockito.when;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLStreamHandler;
import java.util.Arrays;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.Set;
import org.junit.Test;
import org.mockito.Mockito;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import com.puppycrawl.tools.checkstyle.api.CheckstyleException;
/**
* Enter a description of class PackageNamesLoaderTest.java.
* @author Rick Giles
* @author lkuehne
*/
public class PackageNamesLoaderTest {
@Test
public void testDefault()
throws CheckstyleException {
final Set<String> packageNames = PackageNamesLoader
.getPackageNames(Thread.currentThread()
.getContextClassLoader());
validatePackageNames(packageNames);
}
private static void validatePackageNames(Set<String> pkgNames) {
final String[] checkstylePackages = {
"com.puppycrawl.tools.checkstyle.",
"com.puppycrawl.tools.checkstyle.checks.",
"com.puppycrawl.tools.checkstyle.checks.annotation.",
"com.puppycrawl.tools.checkstyle.checks.blocks.",
"com.puppycrawl.tools.checkstyle.checks.coding.",
"com.puppycrawl.tools.checkstyle.checks.design.",
"com.puppycrawl.tools.checkstyle.checks.header.",
"com.puppycrawl.tools.checkstyle.checks.imports.",
"com.puppycrawl.tools.checkstyle.checks.indentation.",
"com.puppycrawl.tools.checkstyle.checks.javadoc.",
"com.puppycrawl.tools.checkstyle.checks.metrics.",
"com.puppycrawl.tools.checkstyle.checks.modifier.",
"com.puppycrawl.tools.checkstyle.checks.naming.",
"com.puppycrawl.tools.checkstyle.checks.regexp.",
"com.puppycrawl.tools.checkstyle.checks.sizes.",
"com.puppycrawl.tools.checkstyle.checks.whitespace.",
"com.puppycrawl.tools.checkstyle.filefilters.",
"com.puppycrawl.tools.checkstyle.filters.",
};
assertEquals("pkgNames.length.", checkstylePackages.length,
pkgNames.size());
final Set<String> checkstylePackagesSet = new HashSet<>(Arrays.asList(checkstylePackages));
assertEquals("names set.", checkstylePackagesSet, pkgNames);
}
@Test
@SuppressWarnings("unchecked")
public void testPackagesWithDots() throws Exception {
final Constructor<PackageNamesLoader> constructor =
PackageNamesLoader.class.getDeclaredConstructor();
constructor.setAccessible(true);
final PackageNamesLoader loader = constructor.newInstance();
final Attributes attributes = mock(Attributes.class);
when(attributes.getValue("name")).thenReturn("coding.");
loader.startElement("", "", "package", attributes);
loader.endElement("", "", "package");
final Field field = PackageNamesLoader.class.getDeclaredField("packageNames");
field.setAccessible(true);
final Set<String> list = (Set<String>) field.get(loader);
assertEquals("coding.", list.iterator().next());
}
@Test
@SuppressWarnings("unchecked")
public void testPackagesWithSaxException() throws Exception {
final URLConnection mockConnection = Mockito.mock(URLConnection.class);
when(mockConnection.getInputStream()).thenReturn(
new ByteArrayInputStream(EMPTY_BYTE_ARRAY));
final URL url = getMockUrl(mockConnection);
final Enumeration<URL> enumeration = mock(Enumeration.class);
when(enumeration.hasMoreElements()).thenReturn(true);
when(enumeration.nextElement()).thenReturn(url);
final ClassLoader classLoader = mock(ClassLoader.class);
when(classLoader.getResources("checkstyle_packages.xml")).thenReturn(enumeration);
try {
PackageNamesLoader.getPackageNames(classLoader);
fail("CheckstyleException is expected");
}
catch (CheckstyleException ex) {
assertTrue(ex.getCause() instanceof SAXException);
}
}
@Test
@SuppressWarnings("unchecked")
public void testPackagesWithIoException() throws Exception {
final URLConnection mockConnection = Mockito.mock(URLConnection.class);
when(mockConnection.getInputStream()).thenReturn(null);
final URL url = getMockUrl(mockConnection);
final Enumeration<URL> enumer = mock(Enumeration.class);
when(enumer.hasMoreElements()).thenReturn(true);
when(enumer.nextElement()).thenReturn(url);
final ClassLoader classLoader = mock(ClassLoader.class);
when(classLoader.getResources("checkstyle_packages.xml")).thenReturn(enumer);
try {
PackageNamesLoader.getPackageNames(classLoader);
fail("CheckstyleException is expected");
}
catch (CheckstyleException ex) {
assertTrue(ex.getCause() instanceof IOException);
assertNotEquals("unable to get package file resources", ex.getMessage());
}
}
@Test
@SuppressWarnings("unchecked")
public void testPackagesWithIoExceptionGetResources() throws Exception {
final ClassLoader classLoader = mock(ClassLoader.class);
when(classLoader.getResources("checkstyle_packages.xml")).thenThrow(IOException.class);
try {
PackageNamesLoader.getPackageNames(classLoader);
fail("CheckstyleException is expected");
}
catch (CheckstyleException ex) {
assertTrue(ex.getCause() instanceof IOException);
assertEquals("unable to get package file resources", ex.getMessage());
}
}
private static URL getMockUrl(final URLConnection connection) throws IOException {
final URLStreamHandler handler = new URLStreamHandler() {
@Override
protected URLConnection openConnection(final URL url) {
return connection;
}
};
return new URL("http://foo.bar", "foo.bar", 80, "", handler);
}
}
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