/*
    * 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.jexl3;
  
  import static org.junit.jupiter.api.Assertions.assertArrayEquals;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertInstanceOf;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.util.Arrays;
  import java.util.List;
  
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests for array literals.
   */
  @SuppressWarnings({"UnnecessaryBoxing", "AssertEqualsBetweenInconvertibleTypes"})
  class ArrayLiteralTest extends JexlTestCase {
  
      public ArrayLiteralTest() {
          super("ArrayLiteralTest");
      }
  
      @Test
      void testChangeThroughVariables() throws Exception {
          final JexlContext jc = new MapContext();
          final JexlExpression e147 = JEXL.createExpression("quux = [one, two]");
  
          jc.set("one", 1);
          jc.set("two", 2);
          final int[] o1 = (int[]) e147.evaluate(jc);
          assertEquals(1, o1[0]);
          assertEquals(2, o1[1]);
  
          jc.set("one", 10);
          jc.set("two", 20);
          final int[] o2 = (int[]) e147.evaluate(jc);
          assertEquals(10, o2[0]);
          assertEquals(20, o2[1]);
      }
  
      @Test
      void testEmptyArrayLiteral() throws Exception {
          final JexlContext jc = new MapContext();
          Object o;
          o = JEXL.createExpression("[]").evaluate(jc);
          assertInstanceOf(Object[].class, o);
          assertEquals(0, ((Object[]) o).length);
          o = JEXL.createExpression("[...]").evaluate(jc);
          assertInstanceOf(List.class, o);
          assertEquals(0, ((List<?>) o).size());
          assertThrows(JexlException.Parsing.class, () -> JEXL.createExpression("[ , ]"));
          assertThrows(JexlException.Parsing.class, () -> JEXL.createExpression("[ ... , ]"));
      }
  
      @Test
      void testLiteralWithElipsis() throws Exception {
          final JexlExpression e = JEXL.createExpression("[ 'foo' , 'bar', ... ]");
          final JexlContext jc = new MapContext();
  
          final Object o = e.evaluate(jc);
          final Object[] check = { "foo", "bar" };
          assertEquals(Arrays.asList(check), o);
          assertEquals(2, ((List<?>) o).size());
          assertThrows(JexlException.Parsing.class, () -> JEXL.createExpression("[ 'foo' , 'bar', ... , ]"));
      }
  
      @Test
      void testLiteralWithIntegers() throws Exception {
          final JexlExpression e = JEXL.createExpression("[ 5 , 10 ]");
          final JexlContext jc = new MapContext();
  
          final Object o = e.evaluate(jc);
          final int[] check = {5, 10};
          assertArrayEquals(check, (int[]) o);
      }
  
      @Test
      void testLiteralWithNulls() throws Exception {
          final String[] exprs = {
              "[ null , 10 ]",
              "[ 10 , null ]",
             "[ 10 , null , 10]",
             "[ '10' , null ]",
             "[ null, '10' , null ]"
         };
         final Object[][] checks = {
             {null, Integer.valueOf(10)},
             {Integer.valueOf(10), null},
             {Integer.valueOf(10), null, Integer.valueOf(10)},
             {"10", null},
             {null, "10", null}
         };
         final JexlContext jc = new MapContext();
         for (int t = 0; t < exprs.length; ++t) {
             final JexlExpression e = JEXL.createExpression(exprs[t]);
             final Object o = e.evaluate(jc);
             assertArrayEquals(checks[t], (Object[]) o, exprs[t]);
         }
 
     }
 
     @Test
     void testLiteralWithNumbers() throws Exception {
         final JexlExpression e = JEXL.createExpression("[ 5.0 , 10 ]");
         final JexlContext jc = new MapContext();
 
         final Object o = e.evaluate(jc);
         final Object[] check = {Double.valueOf(5), Integer.valueOf(10)};
         assertArrayEquals(check, (Object[]) o);
         assertTrue(o.getClass().isArray() && o.getClass().getComponentType().equals(Number.class));
     }
 
     @Test
     void testLiteralWithOneEntry() throws Exception {
         final Object[] check = {"foo"};
         final List<String> sources = Arrays.asList("[ 'foo']", "[ 'foo' , ]");
         for(final String src : sources) {
             final JexlExpression e = JEXL.createExpression(src);
             final Object o = e.evaluate(null);
             assertArrayEquals(check, (Object[]) o);
         }
     }
 
     @Test
     void testLiteralWithStrings() throws Exception {
         final Object[] check = {"foo", "bar"};
         final List<String> sources = Arrays.asList("[ 'foo' , 'bar' ]", "[ 'foo' , 'bar', ]");
         for(final String src : sources) {
             final JexlExpression e = JEXL.createExpression(src);
             final Object o = e.evaluate(null);
             assertArrayEquals(check, (Object[]) o);
         }
     }
 
     @Test
     void testNotEmptySimpleArrayLiteral() throws Exception {
         final JexlExpression e = JEXL.createExpression("empty([ 'foo' , 'bar' ])");
         final JexlContext jc = new MapContext();
 
         final Object o = e.evaluate(jc);
         assertFalse((Boolean) o);
     }
 
     @Test
     void testNotestCallingMethodsOnNewMapLiteral() throws Exception {
         final JexlExpression e = JEXL.createExpression("size({ 'foo' : 'bar' }.values())");
         final JexlContext jc = new MapContext();
 
         final Object o = e.evaluate(jc);
         assertEquals(Integer.valueOf(1), o);
     }
 
     @Test
     void testSizeOfSimpleArrayLiteral() throws Exception {
         final JexlExpression e = JEXL.createExpression("size([ 'foo' , 'bar' ])");
         final JexlContext jc = new MapContext();
 
         final Object o = e.evaluate(jc);
         assertEquals(Integer.valueOf(2), o);
     }
 }