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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.checks.javadoc;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.mockito.Matchers.anyObject;
import java.util.HashSet;
import java.util.Set;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.powermock.api.mockito.PowerMockito;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;
@RunWith(PowerMockRunner.class)
@PrepareForTest({ ClassResolver.class, ClassResolverTest.class })
public class ClassResolverTest {
@Test
public void testMisc() throws ClassNotFoundException {
final Set<String> imports = new HashSet<>();
imports.add("java.io.File");
imports.add("nothing.will.match.*");
imports.add("java.applet.*");
final ClassResolver classResolver =
new ClassResolver(Thread.currentThread().getContextClassLoader(),
null, imports);
assertNotNull("Class resolver should not be null", classResolver);
try {
classResolver.resolve("who.will.win.the.world.cup", "");
fail("Should not resolve class");
}
catch (ClassNotFoundException ex) {
// expected
}
classResolver.resolve("java.lang.String", "");
classResolver.resolve("StringBuffer", "");
classResolver.resolve("AppletContext", "");
try {
classResolver.resolve("ChoiceFormat", "");
fail("ClassNotFoundException is expected");
}
catch (ClassNotFoundException ex) {
// expected
}
imports.add("java.text.ChoiceFormat");
final ClassResolver newClassResolver = new ClassResolver(
Thread.currentThread().getContextClassLoader(), null, imports);
newClassResolver.resolve("ChoiceFormat", "");
final ClassResolver javaUtilClassResolver = new ClassResolver(
Thread.currentThread().getContextClassLoader(), "java.util", imports);
javaUtilClassResolver.resolve("List", "");
try {
javaUtilClassResolver.resolve("two.nil.england", "");
fail("ClassNotFoundException is expected");
}
catch (ClassNotFoundException ex) {
// expected
}
}
@Test
public void testExistedImportCantBeResolved() {
final Set<String> imports = new HashSet<>();
imports.add("java.applet.someClass");
final ClassResolver classResolver = new ClassResolver(
Thread.currentThread().getContextClassLoader(),
"", imports);
try {
classResolver.resolve("someClass", "");
fail("Exception expected");
}
catch (ClassNotFoundException ex) {
// expected
assertEquals("Invalid exception message", "someClass", ex.getMessage());
}
}
@Test
public void testResolveInnerClass() throws Exception {
final Set<String> imports = new HashSet<>();
final ClassResolver classResolver = new ClassResolver(
Thread.currentThread().getContextClassLoader(),
"java.util", imports);
final Class<?> entry = classResolver.resolve("Entry", "Map");
assertEquals("Invalid resolve result", "java.util.Map$Entry", entry.getName());
}
@Test
public void testResolveInnerClassWithEmptyPackage() {
final Set<String> imports = new HashSet<>();
final ClassResolver classResolver = new ClassResolver(
Thread.currentThread().getContextClassLoader(),
"", imports);
try {
classResolver.resolve("Entry", "Map");
fail("Exception is expected");
}
catch (ClassNotFoundException ex) {
assertEquals("Invalid exception message", "Entry", ex.getMessage());
}
}
@Test
public void testResolveQualifiedNameFails() throws Exception {
final Set<String> imports = new HashSet<>();
imports.add("java.applet.someClass");
final ClassResolver classResolver = PowerMockito.spy(new ClassResolver(Thread
.currentThread().getContextClassLoader(), "", imports));
PowerMockito.doThrow(new ClassNotFoundException("expected exception"))
.when(classResolver, "safeLoad", anyObject());
PowerMockito.doReturn(true).when(classResolver, "isLoadable", anyObject());
try {
classResolver.resolve("someClass", "");
fail("Exception expected");
}
catch (IllegalStateException ex) {
// expected
final String expected = "expected exception";
assertTrue("Invalid exception cause, should be: ClassNotFoundException",
ex.getCause() instanceof ClassNotFoundException);
assertTrue("Invalid excpetion message, should end with: " + expected,
ex.getMessage().endsWith(expected));
}
}
/**
* This test exists to prevent any possible regression and let of
* https://github.com/checkstyle/checkstyle/issues/1192 to be persistent
* event is not very obvious.
*
* @throws Exception when smth is not expected
*/
@Test
public void testIsLoadableWithNoClassDefFoundError() throws Exception {
final Set<String> imports = new HashSet<>();
imports.add("java.applet.someClass");
final ClassResolver classResolver = PowerMockito.spy(new ClassResolver(Thread
.currentThread().getContextClassLoader(), "", imports));
PowerMockito.doThrow(new NoClassDefFoundError("expected exception"))
.when(classResolver, "safeLoad", anyObject());
final boolean result = classResolver.isLoadable("someClass");
assertFalse("result should be false", result);
}
}
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