| /* |
| * 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.logging.log4j.util; |
| |
| import org.apache.logging.log4j.message.Message; |
| import org.apache.logging.log4j.message.SimpleMessage; |
| import org.junit.Test; |
| |
| import static org.junit.Assert.*; |
| |
| /** |
| * Tests the LambdaUtil class. |
| */ |
| public class LambdaUtilTest { |
| |
| @Test |
| public void testGetSupplierResultOfSupplier() { |
| final String expected = "result"; |
| final Object actual = LambdaUtil.get(new Supplier<String>() { |
| @Override |
| public String get() { |
| return expected; |
| } |
| }); |
| assertSame(expected, actual); |
| } |
| |
| @Test |
| public void testGetMessageSupplierResultOfSupplier() { |
| final Message expected = new SimpleMessage("hi"); |
| final Message actual = LambdaUtil.get(new MessageSupplier() { |
| @Override |
| public Message get() { |
| return expected; |
| } |
| }); |
| assertSame(expected, actual); |
| } |
| |
| @Test |
| public void testGetSupplierReturnsNullIfSupplierNull() { |
| final Object actual = LambdaUtil.get((Supplier<?>) null); |
| assertNull(actual); |
| } |
| |
| @Test |
| public void testGetMessageSupplierReturnsNullIfSupplierNull() { |
| final Object actual = LambdaUtil.get((MessageSupplier) null); |
| assertNull(actual); |
| } |
| |
| @Test(expected = RuntimeException.class) |
| public void testGetSupplierExceptionIfSupplierThrowsException() { |
| LambdaUtil.get(new Supplier<String>() { |
| @Override |
| public String get() { |
| throw new RuntimeException(); |
| } |
| }); |
| } |
| |
| @Test(expected = RuntimeException.class) |
| public void testGetMessageSupplierExceptionIfSupplierThrowsException() { |
| LambdaUtil.get(new MessageSupplier() { |
| @Override |
| public Message get() { |
| throw new RuntimeException(); |
| } |
| }); |
| } |
| |
| @Test |
| public void testGetAllReturnsResultOfSuppliers() { |
| final String expected1 = "result1"; |
| final Supplier<String> function1 = new Supplier<String>() { |
| @Override |
| public String get() { |
| return expected1; |
| } |
| }; |
| final String expected2 = "result2"; |
| final Supplier<String> function2 = new Supplier<String>() { |
| @Override |
| public String get() { |
| return expected2; |
| } |
| }; |
| |
| final Supplier<?>[] functions = { function1, function2 }; |
| final Object[] actual = LambdaUtil.getAll(functions); |
| assertEquals(actual.length, functions.length); |
| assertSame(expected1, actual[0]); |
| assertSame(expected2, actual[1]); |
| } |
| |
| @Test |
| public void testGetAllReturnsNullArrayIfSupplierArrayNull() { |
| final Object[] actual = LambdaUtil.getAll((Supplier<?>[]) null); |
| assertNull(actual); |
| } |
| |
| @Test |
| public void testGetAllReturnsNullElementsIfSupplierArrayContainsNulls() { |
| final Supplier<?>[] functions = new Supplier<?>[3]; |
| final Object[] actual = LambdaUtil.getAll(functions); |
| assertEquals(actual.length, functions.length); |
| for (final Object object : actual) { |
| assertNull(object); |
| } |
| } |
| |
| @Test(expected = RuntimeException.class) |
| public void testGetAllThrowsExceptionIfAnyOfTheSuppliersThrowsException() { |
| final Supplier<String> function1 = new Supplier<String>() { |
| @Override |
| public String get() { |
| return "abc"; |
| } |
| }; |
| final Supplier<String> function2 = new Supplier<String>() { |
| @Override |
| public String get() { |
| throw new RuntimeException(); |
| } |
| }; |
| |
| final Supplier<?>[] functions = { function1, function2 }; |
| LambdaUtil.getAll(functions); |
| } |
| } |