/*
    * 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
    *
    *      https://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.commons.lang3.function;
  
  import static org.apache.commons.lang3.LangAssertions.assertNullPointerException;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.io.IOException;
  
  import org.apache.commons.lang3.AbstractLangTest;
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests {@link FailablePredicate}.
   */
  class FailablePredicateTest extends AbstractLangTest {
  
      @Test
      void testAnd_bothTrue_returnsTrue() throws IOException {
          final FailablePredicate<String, IOException> p = s -> true;
          assertTrue(p.and(s -> true).test("x"));
      }
  
      @Test
      void testAnd_firstFalse_returnsFalse() throws IOException {
          final FailablePredicate<String, IOException> p = s -> false;
          assertFalse(p.and(s -> true).test("x"));
      }
  
      @Test
      void testAnd_nullOther_throwsNullPointerException() throws Throwable {
          final FailablePredicate<String, IOException> p = s -> true;
          assertNullPointerException(() -> p.and(null));
      }
  
      @Test
      void testFalsePredicate_returnsFalse() throws Throwable {
          assertFalse(FailablePredicate.falsePredicate().test("anything"));
      }
  
      @Test
      void testNegate_invertsResult() throws IOException {
          final FailablePredicate<String, IOException> p = s -> true;
          assertFalse(p.negate().test("x"));
          assertTrue(p.negate().negate().test("x"));
      }
  
      @Test
      void testOr_bothFalse_returnsFalse() throws IOException {
          final FailablePredicate<String, IOException> p = s -> false;
          assertFalse(p.or(s -> false).test("x"));
      }
  
      @Test
      void testOr_nullOther_throwsNullPointerException() throws Throwable {
          final FailablePredicate<String, IOException> p = s -> false;
          assertNullPointerException(() -> p.or(null));
      }
  
      @Test
      void testOr_oneTrue_returnsTrue() throws IOException {
          final FailablePredicate<String, IOException> p = s -> false;
          assertTrue(p.or(s -> true).test("x"));
      }
  
      @Test
      void testTest_evaluatesCorrectly() throws IOException {
          final FailablePredicate<String, IOException> nonEmpty = s -> !s.isEmpty();
          assertTrue(nonEmpty.test("hello"));
          assertFalse(nonEmpty.test(""));
      }
  
      @Test
      void testTest_throwsException() {
          final IOException expected = new IOException("fail");
          final FailablePredicate<String, IOException> p = s -> {
              throw expected;
          };
          final IOException thrown = assertThrows(IOException.class, () -> p.test("x"));
          assertEquals(expected, thrown);
      }
 
     @Test
     void testTruePredicate_returnsTrue() throws Throwable {
         assertTrue(FailablePredicate.truePredicate().test("anything"));
     }
 }