| /* |
| * 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 javax.el.ELException; |
| import javax.el.ELProcessor; |
| |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| public class TestAstLambdaExpression { |
| |
| @Test |
| public void testSpec01() { |
| ELProcessor processor = new ELProcessor(); |
| Object result = processor.getValue("(x->x+1)(1)", Integer.class); |
| Assert.assertEquals(Integer.valueOf(2), result); |
| } |
| |
| |
| @Test |
| public void testSpec02() { |
| ELProcessor processor = new ELProcessor(); |
| Object result = processor.getValue("((x,y)->x+y)(1,2)", Integer.class); |
| Assert.assertEquals(Integer.valueOf(3), result); |
| } |
| |
| |
| @Test |
| public void testSpec03() { |
| ELProcessor processor = new ELProcessor(); |
| Object result = processor.getValue("(()->64)", Integer.class); |
| Assert.assertEquals(Integer.valueOf(64), result); |
| } |
| |
| |
| @Test |
| public void testSpec04() { |
| ELProcessor processor = new ELProcessor(); |
| Object result = |
| processor.getValue("v = (x,y)->x+y; v(3,4)", Integer.class); |
| Assert.assertEquals(Integer.valueOf(7), result); |
| } |
| |
| |
| @Test |
| public void testSpec05() { |
| ELProcessor processor = new ELProcessor(); |
| Object result = |
| processor.getValue("fact = n -> n==0? 1: n*fact(n-1); fact(5)", |
| Integer.class); |
| Assert.assertEquals(Integer.valueOf(120), result); |
| } |
| |
| |
| @Test |
| public void testSpec06() { |
| ELProcessor processor = new ELProcessor(); |
| Object result = |
| processor.getValue("(x->y->x-y)(2)(1)", |
| Integer.class); |
| Assert.assertEquals(Integer.valueOf(1), result); |
| } |
| |
| |
| @Test |
| public void testInvocation01() { |
| ELProcessor processor = new ELProcessor(); |
| Object result = |
| processor.getValue("(()->2)()", |
| Integer.class); |
| Assert.assertEquals(Integer.valueOf(2), result); |
| } |
| |
| |
| @Test |
| public void testNested01() { |
| ELProcessor processor = new ELProcessor(); |
| Object result = |
| processor.getValue("(()->y->2-y)()(1)", |
| Integer.class); |
| Assert.assertEquals(Integer.valueOf(1), result); |
| } |
| |
| |
| @Test |
| public void testNested02() { |
| ELProcessor processor = new ELProcessor(); |
| Object result = |
| processor.getValue("(()->y->()->2-y)()(1)()", |
| Integer.class); |
| Assert.assertEquals(Integer.valueOf(1), result); |
| } |
| |
| |
| @Test(expected=ELException.class) |
| public void testNested03() { |
| ELProcessor processor = new ELProcessor(); |
| // More method parameters than there are nested lambda expressions |
| processor.getValue("(()->y->()->2-y)()(1)()()", |
| Integer.class); |
| } |
| |
| |
| @Test |
| public void testNested04() { |
| ELProcessor processor = new ELProcessor(); |
| Object result = |
| processor.getValue("(()->y->()->x->x-y)()(1)()(2)", |
| Integer.class); |
| Assert.assertEquals(Integer.valueOf(1), result); |
| } |
| |
| |
| @Test |
| public void testNested05() { |
| ELProcessor processor = new ELProcessor(); |
| Object result = |
| processor.getValue("(()->y->()->()->x->x-y)()(1)()()(2)", |
| Integer.class); |
| Assert.assertEquals(Integer.valueOf(1), result); |
| } |
| |
| |
| @Test |
| public void testNested06() { |
| ELProcessor processor = new ELProcessor(); |
| Object result = |
| processor.getValue("(()->y->()->()->x->x-y)()(1)()(3)(2)", |
| Integer.class); |
| Assert.assertEquals(Integer.valueOf(1), result); |
| } |
| |
| |
| @Test |
| public void testNested07() { |
| ELProcessor processor = new ELProcessor(); |
| Object result = |
| processor.getValue("()->()->()->42", |
| Integer.class); |
| Assert.assertEquals(Integer.valueOf(42), result); |
| } |
| |
| |
| @Test |
| public void testLambdaAsFunction01() { |
| ELProcessor processor = new ELProcessor(); |
| Object result = |
| processor.getValue("v = (x->y->x-y); v(2)(1)", |
| Integer.class); |
| Assert.assertEquals(Integer.valueOf(1), result); |
| } |
| |
| |
| @Test |
| public void testLambdaAsFunction02() { |
| ELProcessor processor = new ELProcessor(); |
| Object result = |
| processor.getValue("v = (()->y->2-y); v()(1)", |
| Integer.class); |
| Assert.assertEquals(Integer.valueOf(1), result); |
| } |
| |
| |
| @Test |
| public void testLambdaAsFunction03() { |
| ELProcessor processor = new ELProcessor(); |
| Object result = |
| processor.getValue("v = (()->y->()->2-y); v()(1)()", |
| Integer.class); |
| Assert.assertEquals(Integer.valueOf(1), result); |
| } |
| |
| |
| @Test(expected=ELException.class) |
| public void testLambdaAsFunction04() { |
| ELProcessor processor = new ELProcessor(); |
| // More method parameters than there are nested lambda expressions |
| processor.getValue("v = (()->y->()->2-y); v()(1)()()", |
| Integer.class); |
| } |
| |
| |
| @Test |
| public void testLambdaAsFunction05() { |
| ELProcessor processor = new ELProcessor(); |
| Object result = |
| processor.getValue("v = (()->y->()->x->x-y); v()(1)()(2)", |
| Integer.class); |
| Assert.assertEquals(Integer.valueOf(1), result); |
| } |
| |
| |
| @Test |
| public void testLambdaAsFunction06() { |
| ELProcessor processor = new ELProcessor(); |
| Object result = |
| processor.getValue("v = (()->y->()->()->x->x-y); v()(1)()()(2)", |
| Integer.class); |
| Assert.assertEquals(Integer.valueOf(1), result); |
| } |
| |
| |
| @Test |
| public void testLambdaAsFunction07() { |
| ELProcessor processor = new ELProcessor(); |
| Object result = |
| processor.getValue("v = (()->y->()->()->x->x-y); v()(1)()(3)(2)", |
| Integer.class); |
| Assert.assertEquals(Integer.valueOf(1), result); |
| } |
| } |