/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package jakarta.el;
import java.util.ArrayList;
import org.junit.Assert;
import org.junit.Test;
import org.apache.catalina.authenticator.DigestAuthenticator;
import org.apache.tomcat.util.res.StringManager;
public class TestImportHandler {
/**
* java.lang should be imported by default
*/
@Test
public void testResolveClass01() {
ImportHandler handler = new ImportHandler();
Class<?> result = handler.resolveClass("String");
Assert.assertEquals(String.class, result);
}
/**
* Resolve an unknown class
*/
@Test
public void testResolveClass02() {
ImportHandler handler = new ImportHandler();
Class<?> result = handler.resolveClass("Foo");
Assert.assertNull(result);
}
/**
* Conflict on resolution.
*/
@Test
public void testResolveClass03() {
ImportHandler handler = new ImportHandler();
handler.importPackage("org.apache.tomcat.util");
handler.importPackage("org.apache.jasper.runtime");
for (int i = 1; i <= 3; i++) {
try {
Class<?> clazz = handler.resolveClass("ExceptionUtils");
Assert.fail("Expected ELException but got [" + clazz.getName() + "] on iteration " + i);
} catch (ELException ex) {
// Expected
}
}
}
/**
* Multiple package imports with a single match. https://bz.apache.org/bugzilla/show_bug.cgi?id=57113
*/
@Test
public void testResolveClass04() {
ImportHandler handler = new ImportHandler();
handler.importPackage("java.util");
handler.importPackage("java.net");
Class<?> clazz = handler.resolveClass("ArrayList");
Assert.assertEquals(ArrayList.class, clazz);
}
/**
* Attempting to resolve something that isn't a simple class name
* https://bz.apache.org/bugzilla/show_bug.cgi?id=57132
*/
@Test
public void testResolveClass05() {
ImportHandler handler = new ImportHandler();
handler.importPackage("java.nio");
Class<?> clazz = handler.resolveClass("charset.StandardCharsets");
Assert.assertNull(clazz);
}
/**
* Attempting to resolve something that isn't a simple class name
* https://bz.apache.org/bugzilla/show_bug.cgi?id=57132
*/
@Test
public void testResolveClass06() {
ImportHandler handler = new ImportHandler();
handler.importPackage("java.nio");
Class<?> clazz = handler.resolveClass(null);
Assert.assertNull(clazz);
}
/**
* Import a valid class.
*/
@Test
public void testImportClass01() {
ImportHandler handler = new ImportHandler();
handler.importClass("org.apache.tomcat.util.res.StringManager");
Class<?> result = handler.resolveClass("StringManager");
Assert.assertEquals(StringManager.class, result);
}
/**
* Import an invalid class.
*/
@Test
public void testImportClass02() {
ImportHandler handler = new ImportHandler();
handler.importClass("org.apache.tomcat.util.res.StringManagerX");
Class<?> result = handler.resolveClass("StringManagerX");
Assert.assertNull(result);
}
/**
* Import conflicting classes
*/
@Test
public void testImportClass03() {
ImportHandler handler = new ImportHandler();
handler.importClass("org.apache.tomcat.util.ExceptionUtils");
for (int i = 1; i <= 3; i++) {
try {
handler.importClass("org.apache.jasper.util.ExceptionUtils");
Assert.fail("Expected ELException but got none on iteration " + i);
} catch (ELException ex) {
// Expected
}
}
}
/**
* Import duplicate classes (i.e. the same class twice).
*/
@Test
public void testImportClass04() {
ImportHandler handler = new ImportHandler();
handler.importClass("org.apache.tomcat.util.res.StringManager");
handler.importClass("org.apache.tomcat.util.res.StringManager");
Class<?> result = handler.resolveClass("StringManager");
Assert.assertEquals(StringManager.class, result);
}
/**
* Import an invalid package.
*/
@Test
public void testImportPackage01_57574() {
ImportHandler handler = new ImportHandler();
handler.importPackage("org.apache.tomcat.foo");
// No exception is expected
}
/**
* Import a valid static field.
*/
@Test
public void testImportStatic01() {
ImportHandler handler = new ImportHandler();
handler.importStatic("org.apache.tomcat.util.scan.Constants.Package");
Class<?> result = handler.resolveStatic("Package");
Assert.assertEquals(org.apache.tomcat.util.scan.Constants.class, result);
}
/**
* Import an invalid static field - does not exist.
*/
@Test(expected = ELException.class)
public void testImportStatic02() {
ImportHandler handler = new ImportHandler();
handler.importStatic("org.apache.tomcat.util.buf.Constants.PackageXX");
}
/**
* Import an invalid static field - non-public.
*/
@Test
public void testImportStatic03() {
ImportHandler handler = new ImportHandler();
handler.importStatic("org.apache.tomcat.util.buf.Ascii.toLower");
Class<?> result = handler.resolveStatic("toLower");
Assert.assertEquals(org.apache.tomcat.util.buf.Ascii.class, result);
}
/**
* Import an invalid static field - conflict.
*/
@Test
public void testImportStatic04() {
ImportHandler handler = new ImportHandler();
handler.importStatic("org.apache.tomcat.util.scan.Constants.Package");
for (int i = 1; i <= 3; i++) {
try {
handler.importStatic("org.apache.tomcat.util.threads.Constants.Package");
Assert.fail("Expected ELException but got none on iteration " + i);
} catch (ELException ex) {
// Expected
}
}
}
/**
* Package imports with conflicts due to non-public classes should not conflict.
*/
@Test
public void testBug57135() {
ImportHandler importHandler = new ImportHandler();
importHandler.importPackage("util.a");
importHandler.importPackage("util.b");
importHandler.resolveClass("Foo");
}
/**
* Support for inner classes.
* <p>
* https://bz.apache.org/bugzilla/show_bug.cgi?id=69635
*/
@Test
public void testResolveInnerClass() {
ImportHandler importHandler = new ImportHandler();
importHandler.importClass("org.apache.catalina.authenticator.DigestAuthenticator.AuthDigest");
Class<?> clazz = importHandler.resolveClass("AuthDigest");
Assert.assertEquals(DigestAuthenticator.AuthDigest.class, clazz);
}
}