/*
* 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 org.apache.el.parser;
import jakarta.el.ELContext;
import jakarta.el.ELException;
import jakarta.el.ELProcessor;
import jakarta.el.ExpressionFactory;
import jakarta.el.ValueExpression;
import org.junit.Assert;
import org.junit.Assume;
import org.junit.Test;
import org.apache.jasper.el.ELContextImpl;
import org.apache.tomcat.util.compat.JreCompat;
public class TestAstIdentifier {
@Test
public void testImport01() {
ELProcessor processor = new ELProcessor();
Object result =
processor.getValue("Integer.MAX_VALUE",
Integer.class);
Assert.assertEquals(Integer.valueOf(Integer.MAX_VALUE), result);
}
@Test
public void testImport02() {
ELProcessor processor = new ELProcessor();
processor.getELManager().getELContext().getImportHandler().importStatic(
"java.lang.Integer.MAX_VALUE");
Object result =
processor.getValue("MAX_VALUE",
Integer.class);
Assert.assertEquals(Integer.valueOf(Integer.MAX_VALUE), result);
}
@Test
public void testIdentifierStart() {
/*
* This test only works on Java 17 to Java 18.
*
* Java 17 is the minimum Java version for Tomcat 11.
*
* In Java 19, the definition of Java Letter and/or Java Digit has changed.
*/
Assume.assumeFalse(JreCompat.isJre19Available());
for (int i = 0; i < 0xFFFF; i++) {
if (Character.isJavaIdentifierStart(i)) {
testIdentifier((char) i, 'b');
} else {
try {
testIdentifier((char) i, 'b');
} catch (ELException e) {
continue;
}
Assert.fail("Expected EL exception for [" + i + "], [" + (char) i + "]");
}
}
}
@Test
public void testIdentifierPart() {
/*
* This test only works on Java 17 to Java 18.
*
* Java 17 is the minimum Java version for Tomcat 11.
*
* In Java 19, the definition of Java Letter and/or Java Digit has changed.
*/
Assume.assumeFalse(JreCompat.isJre19Available());
for (int i = 0; i < 0xFFFF; i++) {
if (Character.isJavaIdentifierPart(i)) {
testIdentifier('b', (char) i);
} else {
try {
testIdentifier((char) i, 'b');
} catch (ELException e) {
continue;
}
Assert.fail("Expected EL exception for [" + i + "], [" + (char) i + "]");
}
}
}
private void testIdentifier(char one, char two) {
ExpressionFactory factory = ExpressionFactory.newInstance();
ELContext context = new ELContextImpl();
String s = "OK";
ValueExpression var = factory.createValueExpression(s, String.class);
String identifier = new String(new char[] { one , two });
context.getVariableMapper().setVariable(identifier, var);
ValueExpression ve = null;
try {
ve = factory.createValueExpression(context, "${" + identifier + "}", String.class);
} catch (Exception e) {
throw e;
}
Assert.assertEquals(s, ve.getValue(context));
}
}