/*
* Copyright 2016 Nabarun Mondal
* Licensed 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 com.noga.njexl.lang;
import com.noga.njexl.lang.parser.Parser;
import java.io.StringReader;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.BitSet;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
/**
* Simple testcases
*
* @since 1.0
*/
public class JexlTest extends JexlTestCase
{
protected static final String METHOD_STRING = "Method string";
protected static final String GET_METHOD_STRING = "GetMethod string";
public JexlTest(String testName)
{
super(testName);
}
/**
* test a simple property expression
*/
public void testProperty()
throws Exception
{
/*
* tests a simple property expression
*/
Expression e = JEXL.createExpression("foo.bar");
JexlContext jc = new MapContext();
jc.set("foo", new Foo() );
Object o = e.evaluate(jc);
assertTrue("o not instanceof String", o instanceof String);
assertEquals("o incorrect", GET_METHOD_STRING, o);
}
public void testBoolean()
throws Exception
{
JexlContext jc = new MapContext();
jc.set("foo", new Foo() );
jc.set("a", Boolean.TRUE);
jc.set("b", Boolean.FALSE);
assertExpression(jc, "foo.convertBoolean(a==b)", "Boolean : false");
assertExpression(jc, "foo.convertBoolean(a==true)", "Boolean : true");
assertExpression(jc, "foo.convertBoolean(a==false)", "Boolean : false");
assertExpression(jc, "foo.convertBoolean(true==false)", "Boolean : false");
assertExpression(jc, "true eq false", Boolean.FALSE);
assertExpression(jc, "true ne false", Boolean.TRUE);
}
public void testStringLit()
throws Exception
{
/*
* tests a simple property expression
*/
JexlContext jc = new MapContext();
jc.set("foo", new Foo() );
assertExpression(jc, "foo.get(\"woogie\")", "Repeat : woogie");
}
public void testExpression()
throws Exception
{
JexlContext jc = new MapContext();
jc.set("foo", new Foo() );
jc.set("a", Boolean.TRUE);
jc.set("b", Boolean.FALSE);
jc.set("num", new Integer(5));
jc.set("now", Calendar.getInstance().getTime());
GregorianCalendar gc = new GregorianCalendar(5000, 11, 20);
jc.set("now2", gc.getTime());
jc.set("bdec", new BigDecimal("7"));
jc.set("bint", new BigInteger("7"));
assertExpression(jc, "a == b", Boolean.FALSE);
assertExpression(jc, "a==true", Boolean.TRUE);
assertExpression(jc, "a==false", Boolean.FALSE);
assertExpression(jc, "true==false", Boolean.FALSE);
assertExpression(jc, "2 < 3", Boolean.TRUE);
assertExpression(jc, "num < 5", Boolean.FALSE);
assertExpression(jc, "num < num", Boolean.FALSE);
assertExpression(jc, "num < null", Boolean.FALSE);
assertExpression(jc, "num < 2.5", Boolean.FALSE);
assertExpression(jc, "now2 < now", Boolean.FALSE); // test comparable
//
assertExpression(jc, "'6' <= '5'", Boolean.FALSE);
assertExpression(jc, "num <= 5", Boolean.TRUE);
assertExpression(jc, "num <= num", Boolean.TRUE);
assertExpression(jc, "num <= null", Boolean.FALSE);
assertExpression(jc, "num <= 2.5", Boolean.FALSE);
assertExpression(jc, "now2 <= now", Boolean.FALSE); // test comparable
//
assertExpression(jc, "'6' >= '5'", Boolean.TRUE);
assertExpression(jc, "num >= 5", Boolean.TRUE);
assertExpression(jc, "num >= num", Boolean.TRUE);
assertExpression(jc, "num >= null", Boolean.FALSE);
assertExpression(jc, "num >= 2.5", Boolean.TRUE);
assertExpression(jc, "now2 >= now", Boolean.TRUE); // test comparable
assertExpression(jc, "'6' > '5'", Boolean.TRUE);
assertExpression(jc, "num > 4", Boolean.TRUE);
assertExpression(jc, "num > num", Boolean.FALSE);
assertExpression(jc, "num > null", Boolean.FALSE);
assertExpression(jc, "num > 2.5", Boolean.TRUE);
assertExpression(jc, "now2 > now", Boolean.TRUE); // test comparable
assertExpression(jc, "\"foo\" + \"bar\" == \"foobar\"", Boolean.TRUE);
assertExpression(jc, "bdec > num", Boolean.TRUE);
assertExpression(jc, "bdec >= num", Boolean.TRUE);
assertExpression(jc, "num <= bdec", Boolean.TRUE);
assertExpression(jc, "num < bdec", Boolean.TRUE);
assertExpression(jc, "bint > num", Boolean.TRUE);
assertExpression(jc, "bint == bdec", Boolean.TRUE);
assertExpression(jc, "bint >= num", Boolean.TRUE);
assertExpression(jc, "num <= bint", Boolean.TRUE);
assertExpression(jc, "num < bint", Boolean.TRUE);
}
public void testEmpty()
throws Exception
{
JexlContext jc = new MapContext();
jc.set("nullthing", null );
jc.set("string", "");
jc.set("array", new Object[0]);
jc.set("map", new HashMap<Object, Object>());
jc.set("list", new ArrayList<Object>());
jc.set("set", (new HashMap<Object, Object>()).keySet());
jc.set("longstring", "thingthing");
/*
* I can't believe anyone thinks this is a syntax.. :)
*/
assertExpression(jc, "empty nullthing", Boolean.TRUE);
assertExpression(jc, "empty string", Boolean.TRUE);
assertExpression(jc, "empty array", Boolean.TRUE);
assertExpression(jc, "empty map", Boolean.TRUE);
assertExpression(jc, "empty set", Boolean.TRUE);
assertExpression(jc, "empty list", Boolean.TRUE);
assertExpression(jc, "empty longstring", Boolean.FALSE);
assertExpression(jc, "not empty longstring", Boolean.TRUE);
}
public void testSize()
throws Exception
{
JexlContext jc = new MapContext();
jc.set("s", "five!");
jc.set("array", new Object[5]);
Map<String, Integer> map = new HashMap<String, Integer>();
map.put("1", new Integer(1));
map.put("2", new Integer(2));
map.put("3", new Integer(3));
map.put("4", new Integer(4));
map.put("5", new Integer(5));
jc.set("map", map);
List<String> list = new ArrayList<String>();
list.add("1");
list.add("2");
list.add("3");
list.add("4");
list.add("5");
jc.set("list", list);
// 30652 - support for set
Set<String> set = new HashSet<String>();
set.addAll(list);
set.add("1");
jc.set("set", set);
// support generic int size() method
BitSet bitset = new BitSet(5);
jc.set("bitset", bitset);
assertExpression(jc, "size(s)", new Integer(5));
assertExpression(jc, "size(array)", new Integer(5));
assertExpression(jc, "size(list)", new Integer(5));
assertExpression(jc, "size(map)", new Integer(5));
assertExpression(jc, "size(set)", new Integer(5));
assertExpression(jc, "size(bitset)", new Integer(64));
assertExpression(jc, "list.size()", new Integer(5));
assertExpression(jc, "map.size()", new Integer(5));
assertExpression(jc, "set.size()", new Integer(5));
assertExpression(jc, "bitset.size()", new Integer(64));
assertExpression(jc, "list.get(size(list) - 1)", "5");
assertExpression(jc, "list[size(list) - 1]", "5");
assertExpression(jc, "list.get(list.size() - 1)", "5");
}
public void testSizeAsProperty() throws Exception
{
JexlContext jc = new MapContext();
Map<String, Object> map = new HashMap<String, Object>();
map.put("size", "cheese");
jc.set("map", map);
jc.set("foo", new Foo());
assertExpression(jc, "map['size']", "cheese");
// PR - unsure whether or not we should support map.size or force usage of the above 'escaped' version
// assertExpression(jc, "map.size", "cheese");
assertExpression(jc, "foo.getSize()", new Integer(22));
// failing assertion for size property
//assertExpression(jc, "foo.size", new Integer(22));
}
/**
* test the new function e.g constructor invocation
*/
public void testNew() throws Exception {
JexlContext jc = new MapContext();
jc.set("double", Double.class);
jc.set("foo", com.noga.njexl.lang.Foo.class.getName() );
Expression expr;
Object value;
expr = JEXL.createExpression("new(double, 1)");
value = expr.evaluate(jc);
assertEquals(expr.toString(), new Double(1.0), value);
expr = JEXL.createExpression("new('java.lang.Float', 100)");
value = expr.evaluate(jc);
assertEquals(expr.toString(), new Float(100.0), value);
expr = JEXL.createExpression("new(foo).quux");
value = expr.evaluate(jc);
assertEquals(expr.toString(), "Repeat : quux", value);
}
/**
* test some simple mathematical calculations
*/
public void testCalculations()
throws Exception
{
JexlContext jc = new MapContext();
/*
* test to ensure new string cat works
*/
jc.set("stringy", "thingy" );
assertExpression(jc, "stringy + 2", "thingy2");
/*
* test new null coersion
*/
jc.set("imanull", null );
assertExpression(jc, "imanull + 2", new Integer(2));
assertExpression(jc, "imanull + imanull", new Integer(0));
/* test for bugzilla 31577 */
jc.set("n", new Integer(0));
assertExpression(jc, "n != null && n != 0", Boolean.FALSE);
}
/**
* test some simple conditions
*/
public void testConditions()
throws Exception
{
JexlContext jc = new MapContext();
jc.set("foo", new Integer(2) );
jc.set("aFloat", new Float(1));
jc.set("aDouble", new Double(2));
jc.set("aChar", new Character('A'));
jc.set("aBool", Boolean.TRUE);
StringBuilder buffer = new StringBuilder("abc");
List<Object> list = new ArrayList<Object>();
List<Object> list2 = new LinkedList<Object>();
jc.set("aBuffer", buffer);
jc.set("aList", list);
jc.set("bList", list2);
jc.set("notThere",null);
assertExpression(jc, "foo == 2", Boolean.TRUE);
assertExpression(jc, "2 == 3", Boolean.FALSE);
assertExpression(jc, "3 == foo", Boolean.FALSE);
assertExpression(jc, "3 != foo", Boolean.TRUE);
assertExpression(jc, "foo != 2", Boolean.FALSE);
// test float and double equality
assertExpression(jc, "aFloat eq aDouble", Boolean.FALSE);
assertExpression(jc, "aFloat ne aDouble", Boolean.TRUE);
assertExpression(jc, "aFloat == aDouble", Boolean.FALSE);
assertExpression(jc, "aFloat != aDouble", Boolean.TRUE);
// test number and character equality
assertExpression(jc, "foo == aChar", Boolean.FALSE);
assertExpression(jc, "foo != aChar", Boolean.TRUE);
// test string and boolean
assertExpression(jc, "aBool == 'true'", Boolean.TRUE);
assertExpression(jc, "aBool == 'false'", Boolean.FALSE);
assertExpression(jc, "aBool != 'false'", Boolean.TRUE);
// test null and boolean
assertExpression(jc, "aBool == notThere", Boolean.FALSE);
assertExpression(jc, "aBool != notThere", Boolean.TRUE);
// anything and string as a string comparison
assertExpression(jc, "aBuffer == 'abc'", Boolean.TRUE);
assertExpression(jc, "aBuffer != 'abc'", Boolean.FALSE);
// arbitrary equals
assertExpression(jc, "aList == bList", Boolean.TRUE);
assertExpression(jc, "aList != bList", Boolean.FALSE);
}
/**
* test some simple conditions
*/
public void testNotConditions()
throws Exception
{
JexlContext jc = new MapContext();
Foo foo = new Foo();
jc.set("x", Boolean.TRUE );
jc.set("foo", foo );
jc.set("bar", "true" );
assertExpression(jc, "!x", Boolean.FALSE);
assertExpression(jc, "x", Boolean.TRUE);
assertExpression(jc, "!bar", Boolean.FALSE);
assertExpression(jc, "!foo.isSimple()", Boolean.FALSE);
assertExpression(jc, "foo.isSimple()", Boolean.TRUE);
assertExpression(jc, "!foo.simple", Boolean.FALSE);
assertExpression(jc, "foo.simple", Boolean.TRUE);
assertExpression(jc, "foo.getCheeseList().size() == 3", Boolean.TRUE);
assertExpression(jc, "foo.cheeseList.size() == 3", Boolean.TRUE);
jc.set("string", "");
assertExpression(jc, "not empty string", Boolean.FALSE);
assertExpression(jc, "not(empty string)", Boolean.FALSE);
assertExpression(jc, "not empty(string)", Boolean.FALSE);
assertExpression(jc, "! empty string", Boolean.FALSE);
assertExpression(jc, "!(empty string)", Boolean.FALSE);
assertExpression(jc, "!empty(string)", Boolean.FALSE);
}
/**
* test some simple conditions
*/
public void testNotConditionsWithDots()
throws Exception
{
JexlContext jc = new MapContext();
jc.set("x.a", Boolean.TRUE );
jc.set("x.b", Boolean.FALSE );
assertExpression(jc, "x.a", Boolean.TRUE);
assertExpression(jc, "!x.a", Boolean.FALSE);
assertExpression(jc, "!x.b", Boolean.TRUE);
}
/**
* test some simple conditions
*/
public void testComparisons()
throws Exception
{
JexlContext jc = new MapContext();
jc.set("foo", "the quick and lazy fox" );
assertExpression(jc, "foo.indexOf('quick') > 0", Boolean.TRUE);
assertExpression(jc, "foo.indexOf('bar') >= 0", Boolean.FALSE);
assertExpression(jc, "foo.indexOf('bar') < 0", Boolean.TRUE);
}
/**
* test some null conditions
*/
public void testNull()
throws Exception
{
JexlContext jc = new MapContext();
jc.set("bar", new Integer(2) );
jc.set("foo", null );
assertExpression(jc, "empty foo", Boolean.TRUE);
assertExpression(jc, "bar == null", Boolean.FALSE);
assertExpression(jc, "foo == null", Boolean.TRUE);
assertExpression(jc, "bar != null", Boolean.TRUE);
assertExpression(jc, "foo != null", Boolean.FALSE);
assertExpression(jc, "empty(bar)", Boolean.FALSE);
assertExpression(jc, "empty(foo)", Boolean.TRUE);
}
/**
* test quoting in strings
*/
public void testStringQuoting() throws Exception {
JexlContext jc = new MapContext();
assertExpression(jc, "'\"Hello\"'", "\"Hello\"");
assertExpression(jc, "\"I'm testing\"", "I'm testing");
}
/**
* test some blank strings
*/
public void testBlankStrings()
throws Exception
{
JexlContext jc = new MapContext();
jc.set("foo", null );
jc.set("bar", "" );
assertExpression(jc, "foo == ''", Boolean.FALSE);
assertExpression(jc, "bar == ''", Boolean.TRUE);
/*
Under new management -- this is invalid. Should try exist
assertExpression(jc, "barnotexist == ''", Boolean.FALSE);
*/
assertExpression(jc, "empty bar", Boolean.TRUE);
assertExpression(jc, "bar.length() == 0", Boolean.TRUE);
assertExpression(jc, "size(bar) == 0", Boolean.TRUE);
}
/**
* test some blank strings
*/
public void testLogicExpressions()
throws Exception
{
JexlContext jc = new MapContext();
jc.set("foo", "abc" );
jc.set("bar", "def" );
assertExpression(jc, "foo == 'abc' || bar == 'abc'", Boolean.TRUE);
assertExpression(jc, "foo == 'abc' or bar == 'abc'", Boolean.TRUE);
assertExpression(jc, "foo == 'abc' && bar == 'abc'", Boolean.FALSE);
assertExpression(jc, "foo == 'abc' and bar == 'abc'", Boolean.FALSE);
assertExpression(jc, "foo == 'def' || bar == 'abc'", Boolean.FALSE);
assertExpression(jc, "foo == 'def' or bar == 'abc'", Boolean.FALSE);
assertExpression(jc, "foo == 'abc' && bar == 'def'", Boolean.TRUE);
assertExpression(jc, "foo == 'abc' and bar == 'def'", Boolean.TRUE);
}
/**
* test variables with underscore names
*/
public void testVariableNames()
throws Exception
{
JexlContext jc = new MapContext();
jc.set("foo_bar", "123" );
assertExpression(jc, "foo_bar", "123");
}
/**
* test the use of dot notation to lookup map entries
*/
public void testMapDot()
throws Exception
{
Map<String, String> foo = new HashMap<String, String>();
foo.put( "bar", "123" );
JexlContext jc = new MapContext();
jc.set("foo", foo );
assertExpression(jc, "foo.bar", "123");
}
/**
* Tests string literals
*/
public void testStringLiterals()
throws Exception
{
JexlContext jc = new MapContext();
jc.set("foo", "bar" );
assertExpression(jc, "foo == \"bar\"", Boolean.TRUE);
assertExpression(jc, "foo == 'bar'", Boolean.TRUE);
}
/**
* test the use of an int based property
*/
public void testIntProperty()
throws Exception
{
Foo foo = new Foo();
// lets check the square function first..
assertEquals(4, foo.square(2));
assertEquals(4, foo.square(-2));
JexlContext jc = new MapContext();
jc.set("foo", foo );
assertExpression(jc, "foo.count", new Integer(5));
assertExpression(jc, "foo.square(2)", new Integer(4));
assertExpression(jc, "foo.square(-2)", new Integer(4));
}
/**
* test the -1 comparison bug
*/
public void testNegativeIntComparison()
throws Exception
{
JexlContext jc = new MapContext();
Foo foo = new Foo();
jc.set("foo", foo );
assertExpression(jc, "foo.count != -1", Boolean.TRUE);
assertExpression(jc, "foo.count == 5", Boolean.TRUE);
assertExpression(jc, "foo.count == -1", Boolean.FALSE);
}
/**
* Attempts to recreate bug http://jira.werken.com/ViewIssue.jspa?key=JELLY-8
*/
public void testCharAtBug()
throws Exception
{
JexlContext jc = new MapContext();
jc.set("foo", "abcdef");
assertExpression(jc, "foo.substring(2,4)", "cd");
assertExpression(jc, "foo.charAt(2)", new Character('c'));
assertExpression(jc, "foo.charAt(-2)", null);
}
public void testEmptyDottedVariableName() throws Exception
{
JexlContext jc = new MapContext();
jc.set( "this.is.a.test", "");
assertExpression(jc, "empty(this.is.a.test)", Boolean.TRUE);
}
public void testEmptySubListOfMap() throws Exception
{
JexlContext jc = new MapContext();
Map<String, ArrayList<?>> m = new HashMap<String, ArrayList<?>>();
m.put("aList", new ArrayList<Object>());
jc.set( "aMap", m );
assertExpression( jc, "empty( aMap.aList )", Boolean.TRUE );
}
public void testCoercionWithComparisionOperators()
throws Exception
{
JexlContext jc = new MapContext();
assertExpression(jc, "'2' > 1", Boolean.TRUE);
assertExpression(jc, "'2' >= 1", Boolean.TRUE);
assertExpression(jc, "'2' >= 2", Boolean.TRUE);
assertExpression(jc, "'2' < 1", Boolean.FALSE);
assertExpression(jc, "'2' <= 1", Boolean.FALSE);
assertExpression(jc, "'2' <= 2", Boolean.TRUE);
assertExpression(jc, "2 > '1'", Boolean.TRUE);
assertExpression(jc, "2 >= '1'", Boolean.TRUE);
assertExpression(jc, "2 >= '2'", Boolean.TRUE);
assertExpression(jc, "2 < '1'", Boolean.FALSE);
assertExpression(jc, "2 <= '1'", Boolean.FALSE);
assertExpression(jc, "2 <= '2'", Boolean.TRUE);
}
/**
* Test that 'and' only evaluates the second item if needed
* @throws Exception if there are errors
*/
public void testBooleanShortCircuitAnd() throws Exception
{
// handle false for the left arg of 'and'
Foo tester = new Foo();
JexlContext jc = new MapContext();
jc.set("first", Boolean.FALSE);
jc.set("foo", tester);
Expression expr = JEXL.createExpression("first and foo.trueAndModify");
expr.evaluate(jc);
assertTrue("Short circuit failure: rhs evaluated when lhs FALSE", !tester.getModified());
// handle true for the left arg of 'and'
tester = new Foo();
jc.set("first", Boolean.TRUE);
jc.set("foo", tester);
expr.evaluate(jc);
assertTrue("Short circuit failure: rhs not evaluated when lhs TRUE", tester.getModified());
}
/**
* Test that 'or' only evaluates the second item if needed
* @throws Exception if there are errors
*/
public void testBooleanShortCircuitOr() throws Exception
{
// handle false for the left arg of 'or'
Foo tester = new Foo();
JexlContext jc = new MapContext();
jc.set("first", Boolean.FALSE);
jc.set("foo", tester);
Expression expr = JEXL.createExpression("first or foo.trueAndModify");
expr.evaluate(jc);
assertTrue("Short circuit failure: rhs not evaluated when lhs FALSE", tester.getModified());
// handle true for the left arg of 'or'
tester = new Foo();
jc.set("first", Boolean.TRUE);
jc.set("foo", tester);
expr.evaluate(jc);
assertTrue("Short circuit failure: rhs evaluated when lhs TRUE", !tester.getModified());
}
/**
* Simple test of '+' as a string concatenation operator
* @throws Exception
*/
public void testStringConcatenation() throws Exception
{
JexlContext jc = new MapContext();
jc.set("first", "Hello");
jc.set("second", "World");
assertExpression(jc, "first + ' ' + second", "Hello World");
}
public void testToString() throws Exception {
String code = "abcd";
Expression expr = JEXL.createExpression(code);
assertEquals("Bad expression value", code, expr.toString());
}
/**
* Make sure bad syntax throws ParseException
* @throws Exception on errors
*/
public void testBadParse() throws Exception
{
try
{
assertExpression(new MapContext(), "empty()", null);
fail("Bad expression didn't throw ParseException");
}
catch (JexlException pe)
{
// expected behaviour
}
}
/**
* Test the ## comment in a string
* @throws Exception
*/
public void testComment() throws Exception
{
assertExpression(new MapContext(), "## double or nothing\n 1 + 1", Integer.valueOf("2"));
}
/**
* Test assignment.
* @throws Exception
*/
public void testAssignment() throws Exception
{
JexlContext jc = new MapContext();
jc.set("aString", "Hello");
Foo foo = new Foo();
jc.set("foo", foo);
Parser parser = new Parser(new StringReader(";"));
parser.parse(new StringReader("aString = 'World';"), null);
assertExpression(jc, "hello = 'world'", "world");
assertEquals("hello variable not changed", "world", jc.get("hello"));
assertExpression(jc, "result = 1 + 1", new Integer(2));
assertEquals("result variable not changed", new Integer(2), jc.get("result"));
// todo: make sure properties can be assigned to, fall back to flat var if no property
// assertExpression(jc, "foo.property1 = '99'", "99");
// assertEquals("property not set", "99", foo.getProperty1());
}
public void testAntPropertiesWithMethods() throws Exception
{
JexlContext jc = new MapContext();
String value = "Stinky Cheese";
jc.set("maven.bob.food", value);
assertExpression(jc, "maven.bob.food.length()", new Integer(value.length()));
assertExpression(jc, "empty(maven.bob.food)", Boolean.FALSE);
assertExpression(jc, "size(maven.bob.food)", new Integer(value.length()));
assertExpression(jc, "maven.bob.food + ' is good'", value + " is good");
// DG: Note the following ant properties don't work
// String version = "1.0.3";
// jc.set("commons-logging", version);
// assertExpression(jc, "commons-logging", version);
}
public void testUnicodeSupport() throws Exception
{
JexlContext jc = new MapContext();
jc.set("myvar","");
assertExpression(jc, "myvar == 'Użytkownik'", Boolean.FALSE);
assertExpression(jc, "'c:\\some\\windows\\path'", "c:\\some\\windows\\path");
assertExpression(jc, "'foo\\u0020bar'", "foo\u0020bar");
assertExpression(jc, "'foo\\u0020\\u0020bar'", "foo\u0020\u0020bar");
assertExpression(jc, "'\\u0020foobar\\u0020'", "\u0020foobar\u0020");
}
public static final class Duck {
int user = 10;
@SuppressWarnings("boxing")
public Integer get(String val) {
if ("zero".equals(val))
return 0;
if ("one".equals(val))
return 1;
if ("user".equals(val))
return user;
return -1;
}
@SuppressWarnings("boxing")
public void set(String val, Object value) {
if ("user".equals(val)) {
if ("zero".equals(value))
user = 0;
else if ("one".equals(value))
user = 1;
else
user = value instanceof Integer? (Integer) value : -1;
}
}
}
@SuppressWarnings("boxing")
public void testDuck() throws Exception {
JexlEngine jexl = JEXL;
JexlContext jc = new MapContext();
jc.set("duck", new Duck());
Expression expr;
Object result;
expr = jexl.createExpression("duck.zero");
result = expr.evaluate(jc);
assertEquals(expr.toString(), 0, result);
expr = jexl.createExpression("duck.one");
result = expr.evaluate(jc);
assertEquals(expr.toString(), 1, result);
expr = jexl.createExpression("duck.user = 20");
result = expr.evaluate(jc);
assertEquals(expr.toString(), 20, result);
expr = jexl.createExpression("duck.user");
result = expr.evaluate(jc);
assertEquals(expr.toString(), 20, result);
expr = jexl.createExpression("duck.user = 'zero'");
result = expr.evaluate(jc);
expr = jexl.createExpression("duck.user");
result = expr.evaluate(jc);
assertEquals(expr.toString(), 0, result);
}
@SuppressWarnings("boxing")
public void testArray() throws Exception {
int[] array = { 100, 101 , 102 };
JexlEngine jexl = JEXL;
JexlContext jc = new MapContext();
jc.set("array", array);
Expression expr;
Object result;
expr = jexl.createExpression("array.1");
result = expr.evaluate(jc);
assertEquals(expr.toString(), 101, result);
expr = jexl.createExpression("array[1] = 1010");
result = expr.evaluate(jc);
assertEquals(expr.toString(), 1010, result);
expr = jexl.createExpression("array.0");
result = expr.evaluate(jc);
assertEquals(expr.toString(), 100, result);
}
/**
* Asserts that the given expression returns the given value when applied to the
* given context
*/
protected void assertExpression(JexlContext jc, String expression, Object expected) throws Exception
{
Expression e = JEXL.createExpression(expression);
Object actual = e.evaluate(jc);
assertEquals(expression, expected, actual);
}
}