content: /*
   * 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 com.github.jobson.scripting.functions;
  
  import com.github.jobson.TestHelpers;
  import com.github.jobson.jobinputs.stringarray.StringArrayInput;
  import org.junit.Test;
  
  import java.util.List;
  
  import static org.assertj.core.api.Assertions.assertThat;
  
  public class JoinFunctionTest {
      @Test
      public void testWhenCalledWithADelimiterAndAnArrayOfStringReturnsAStringJoinedByTheDelimiter() {
          final JoinFunction joinFunction = new JoinFunction();
          final String delimiter = ",";
          final List<String> items = generateTestData();
          final Object ret = joinFunction.call(delimiter, new StringArrayInput(items));
  
          assertThat(ret.getClass()).isEqualTo(String.class);
          assertThat(ret).isEqualTo(String.join(delimiter, items));
      }
  
      private List<String> generateTestData() {
          return TestHelpers.generateListContainingNElements(10, TestHelpers::generateAlphanumStr);
      }
  
      @Test(expected = RuntimeException.class)
      public void testWhenCalledWithInvalidTypesThrowsException() {
          final JoinFunction joinFunction = new JoinFunction();
  
          // These should throw
          joinFunction.call(new Object(), new Object());
          joinFunction.call(",", new Object());
          joinFunction.call(new Object(), generateTestData());
      }
  
      @Test(expected = RuntimeException.class)
      public void testThrowsWhenCalledWithInvalidNumberOfArguments() {
          final JoinFunction joinFunction = new JoinFunction();
          joinFunction.call(",");
          joinFunction.call(",", generateTestData(), new Object());
      }
  }