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273
test/javax/el/TestImportHandler.java
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273
test/javax/el/TestImportHandler.java
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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package javax.el;
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import java.util.ArrayList;
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import org.junit.Assert;
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import org.junit.Test;
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import org.apache.tomcat.util.res.StringManager;
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public class TestImportHandler {
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/**
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* java.lang should be imported by default
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*/
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@Test
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public void testResolveClass01() {
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ImportHandler handler = new ImportHandler();
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Class<?> result = handler.resolveClass("String");
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Assert.assertEquals(String.class, result);
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}
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/**
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* Resolve an unknown class
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*/
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@Test
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public void testResolveClass02() {
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ImportHandler handler = new ImportHandler();
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Class<?> result = handler.resolveClass("Foo");
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Assert.assertNull(result);
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}
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/**
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* Conflict on resolution.
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*/
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@Test
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public void testResolveClass03() {
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ImportHandler handler = new ImportHandler();
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handler.importPackage("org.apache.tomcat.util");
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handler.importPackage("org.apache.jasper.runtime");
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for (int i = 1; i <= 3; i++) {
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try {
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Class<?> clazz = handler.resolveClass("ExceptionUtils");
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Assert.fail("Expected ELException but got [" + clazz.getName()
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+ "] on iteration " + i);
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} catch (ELException ex) {
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// Expected
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}
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}
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}
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/**
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* Multiple package imports with a single match.
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* https://bz.apache.org/bugzilla/show_bug.cgi?id=57113
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*/
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@Test
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public void testResolveClass04() {
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ImportHandler handler = new ImportHandler();
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handler.importPackage("java.util");
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handler.importPackage("java.net");
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Class<?> clazz = handler.resolveClass("ArrayList");
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Assert.assertEquals(ArrayList.class, clazz);
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}
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/**
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* Attempting to resolve something that isn't a simple class name
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* https://bz.apache.org/bugzilla/show_bug.cgi?id=57132
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*/
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@Test
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public void testResolveClass05() {
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ImportHandler handler = new ImportHandler();
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handler.importPackage("java.nio");
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Class<?> clazz = handler.resolveClass("charset.StandardCharsets");
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Assert.assertNull(clazz);
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}
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/**
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* Attempting to resolve something that isn't a simple class name
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* https://bz.apache.org/bugzilla/show_bug.cgi?id=57132
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*/
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@Test
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public void testResolveClass06() {
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ImportHandler handler = new ImportHandler();
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handler.importPackage("java.nio");
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Class<?> clazz = handler.resolveClass(null);
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Assert.assertNull(clazz);
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}
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/**
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* Import a valid class.
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*/
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@Test
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public void testImportClass01() {
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ImportHandler handler = new ImportHandler();
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handler.importClass("org.apache.tomcat.util.res.StringManager");
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Class<?> result = handler.resolveClass("StringManager");
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Assert.assertEquals(StringManager.class, result);
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}
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/**
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* Import an invalid class.
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*/
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@Test
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public void testImportClass02() {
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ImportHandler handler = new ImportHandler();
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handler.importClass("org.apache.tomcat.util.res.StringManagerX");
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Class<?> result = handler.resolveClass("StringManagerX");
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Assert.assertNull(result);
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}
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/**
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* Import conflicting classes
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*/
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@Test
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public void testImportClass03() {
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ImportHandler handler = new ImportHandler();
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handler.importClass("org.apache.tomcat.util.ExceptionUtils");
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for (int i = 1; i <= 3; i++) {
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try {
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handler.importClass("org.apache.jasper.util.ExceptionUtils");
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Assert.fail("Expected ELException but got none on iteration "
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+ i);
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} catch (ELException ex) {
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// Expected
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}
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}
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}
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/**
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* Import duplicate classes (i.e. the same class twice).
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*/
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@Test
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public void testImportClass04() {
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ImportHandler handler = new ImportHandler();
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handler.importClass("org.apache.tomcat.util.res.StringManager");
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handler.importClass("org.apache.tomcat.util.res.StringManager");
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Class<?> result = handler.resolveClass("StringManager");
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Assert.assertEquals(StringManager.class, result);
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}
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/**
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* Import an invalid package.
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*/
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@Test
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public void testImportPackage01_57574() {
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ImportHandler handler = new ImportHandler();
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handler.importPackage("org.apache.tomcat.foo");
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// No exception is expected
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}
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/**
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* Import a valid static field.
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*/
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@Test
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public void testImportStatic01() {
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ImportHandler handler = new ImportHandler();
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handler.importStatic("org.apache.tomcat.util.scan.Constants.Package");
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Class<?> result = handler.resolveStatic("Package");
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Assert.assertEquals(org.apache.tomcat.util.scan.Constants.class, result);
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}
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/**
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* Import an invalid static field - does not exist.
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*/
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@Test(expected=ELException.class)
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public void testImportStatic02() {
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ImportHandler handler = new ImportHandler();
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handler.importStatic("org.apache.tomcat.util.buf.Constants.PackageXX");
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}
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/**
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* Import an invalid static field - non-public.
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*/
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@Test
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public void testImportStatic03() {
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ImportHandler handler = new ImportHandler();
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handler.importStatic("org.apache.tomcat.util.buf.Ascii.toLower");
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Class<?> result = handler.resolveStatic("toLower");
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Assert.assertEquals(org.apache.tomcat.util.buf.Ascii.class, result);
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}
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/**
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* Import an invalid static field - conflict.
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*/
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@Test
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public void testImportStatic04() {
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ImportHandler handler = new ImportHandler();
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handler.importStatic("org.apache.tomcat.util.buf.Constants.Package");
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for (int i = 1; i <= 3; i++) {
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try {
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handler.importStatic("org.apache.tomcat.util.scan.Constants.Package");
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Assert.fail("Expected ELException but got none on iteration "
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+ i);
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} catch (ELException ex) {
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// Expected
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}
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}
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}
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/**
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* Package imports with conflicts due to non-public classes should not
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* conflict.
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*/
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@Test
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public void testBug57135() {
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ImportHandler importHandler = new ImportHandler();
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importHandler.importPackage("util.a");
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importHandler.importPackage("util.b");
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importHandler.resolveClass("Foo");
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}
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}
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