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 org.apache.camel.converter.jaxb;
  
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.extension.ExtendWith;
  import org.mockito.Mock;
  import org.mockito.invocation.InvocationOnMock;
  import org.mockito.junit.jupiter.MockitoExtension;
  import org.mockito.stubbing.Answer;
  
  import static org.junit.jupiter.api.Assertions.assertArrayEquals;
  import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertSame;
  import static org.junit.jupiter.api.Assertions.fail;
  import static org.mockito.ArgumentMatchers.any;
  import static org.mockito.ArgumentMatchers.anyChar;
  import static org.mockito.ArgumentMatchers.anyInt;
  import static org.mockito.ArgumentMatchers.anyString;
  import static org.mockito.ArgumentMatchers.eq;
  import static org.mockito.Mockito.never;
  import static org.mockito.Mockito.verify;
  import static org.mockito.Mockito.when;
  
  @ExtendWith(MockitoExtension.class)
  public class NonXmlCharFiltererTest {
      private NonXmlCharFilterer nonXmlCharFilterer;
      @Mock
      private NonXmlCharFilterer nonXmlCharFiltererMock;
  
      @BeforeEach
      public void setUp() {
          nonXmlCharFilterer = new NonXmlCharFilterer();
      }
  
      @Test
      public void testIsFilteredValidChars() {
          // Per http://www.w3.org/TR/2004/REC-xml-20040204/#NT-Char
          // Char ::= #x9 | #xA | #xD | [#x20-#xD7FF] | [#xE000-#xFFFD] |
          // [#x10000-#x10FFFF]
          checkSingleValid(0x9);
          checkSingleValid(0xA);
          checkSingleValid(0xD);
          checkRangeValid(0x20, 0xD7FF);
          checkRangeValid(0xE000, 0xFFFD);
          // not checking [0x10000, 0x10FFFF], as it goes beyond
          // Character.MAX_VALUE
      }
  
      @Test
      public void testIsFilteredInvalidChars() {
          // Per http://www.w3.org/TR/2004/REC-xml-20040204/#NT-Char
          // Char ::= #x9 | #xA | #xD | [#x20-#xD7FF] | [#xE000-#xFFFD] |
          // [#x10000-#x10FFFF]
          checkRangeInvalid(0x0, 0x8);
          checkRangeInvalid(0xB, 0xC);
          checkRangeInvalid(0xE, 0x1F);
          checkRangeInvalid(0xD800, 0xDFFF);
          checkRangeInvalid(0xFFFE, 0xFFFF);
          // no need to check beyond #x10FFFF as this is greater than
          // Character.MAX_VALUE
      }
  
      @Test
      public void testFilter1ArgNonFiltered() {
          when(nonXmlCharFiltererMock.filter(anyString())).thenCallRealMethod();
          when(nonXmlCharFiltererMock.filter(any(char[].class), anyInt(), anyInt())).thenReturn(false);
  
          String string = "abc";
          String result = nonXmlCharFiltererMock.filter(string);
  
          verify(nonXmlCharFiltererMock).filter(new char[] { 'a', 'b', 'c' }, 0, 3);
  
          assertSame(string, result, "Should have returned the same string if nothing was filtered");
      }
  
      @Test
      public void testFilter1ArgFiltered() {
          when(nonXmlCharFiltererMock.filter(anyString())).thenCallRealMethod();
          when(nonXmlCharFiltererMock.filter(eq(new char[] { 'a', 'b', 'c' }), anyInt(), anyInt()))
                  .thenAnswer(new Answer<Boolean>() {
  
                      public Boolean answer(InvocationOnMock invocation) {
                          char[] buffer = (char[]) invocation.getArguments()[0];
                          buffer[0] = 'i';
                          buffer[1] = 'o';
                          return true;
                      }
                  });
  
          String result = nonXmlCharFiltererMock.filter("abc");
          verify(nonXmlCharFiltererMock).filter(any(char[].class), eq(0), eq(3));
          assertEquals("ioc", result, "Should have returned filtered string");
      }
  
      @Test
      public void testFilter1ArgNullArg() {
          nonXmlCharFiltererMock.filter(null);
          verify(nonXmlCharFiltererMock, never()).filter(any(char[].class), anyInt(), anyInt());
      }
  
      @Test
      public void testFilter3Args() {
          when(nonXmlCharFiltererMock.filter(any(char[].class), anyInt(), anyInt())).thenCallRealMethod();
          when(nonXmlCharFiltererMock.isFiltered(anyChar())).thenReturn(true, false, true);
  
          char[] buffer = new char[] { '1', '2', '3', '4', '5', '6' };
          nonXmlCharFiltererMock.filter(buffer, 2, 3);
  
          verify(nonXmlCharFiltererMock).isFiltered('3');
          verify(nonXmlCharFiltererMock).isFiltered('4');
          verify(nonXmlCharFiltererMock).isFiltered('5');
  
          assertArrayEquals(new char[] { '1', '2', ' ', '4', ' ', '6' }, buffer, "Unexpected buffer contents");
      }
  
      @Test
      public void testFilter3ArgsNullArg() {
          assertDoesNotThrow(() -> nonXmlCharFilterer.filter(null, 2, 3));
      }
  
      private void checkSingleValid(int charCode) {
          checkRangeValid(charCode, charCode);
      }
  
      private void checkRangeValid(int startCharCodeInclusive, int endCharCodeInclusive) {
          for (int charCode = startCharCodeInclusive; charCode <= endCharCodeInclusive; charCode++) {
              if (nonXmlCharFilterer.isFiltered((char) charCode)) {
                  fail("Character " + asHex(charCode) + " from range ["
                       + asHex(startCharCodeInclusive) + "-" + asHex(endCharCodeInclusive)
                       + "] should be valid, but it is not");
              }
  
          }
      }
  
      private void checkRangeInvalid(int startCharCodeInclusive, int endCharCodeInclusive) {
          for (int charCode = startCharCodeInclusive; charCode <= endCharCodeInclusive; charCode++) {
              if (!nonXmlCharFilterer.isFiltered((char) charCode)) {
                  fail("Character " + asHex(charCode) + " from range ["
                       + asHex(startCharCodeInclusive) + "-" + asHex(endCharCodeInclusive)
                       + "] should not be valid, but it is");
              }
          }
      }
  
      private String asHex(int charCode) {
          return "#x" + Integer.toHexString(charCode);
      }
  }
  