text: /*
   * 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.
   */
  
  #include "common/iconv.h"
  #include "convert-test-data.h"
  
  #include <CUnit/CUnit.h>
  #include <stdio.h>
  
  /**
   * Tests that conversion between character sets using the given guac_iconv_read
   * and guac_iconv_write implementations matches expectations.
   *
   * @param reader
   *     The guac_iconv_read implementation to use to read the input string.
   *
   * @param in_string
   *     A pointer to the test_string structure describing the input string being
   *     tested.
   *
   * @param writer
   *     The guac_iconv_write implementation to use to write the output string
   *     (the converted input string).
   *
   * @param out_string
   *     A pointer to the test_string structure describing the expected result of
   *     the conversion.
   */
  static void verify_conversion(
          guac_iconv_read* reader,  test_string* in_string,
          guac_iconv_write* writer, test_string* out_string) {
  
      char output[4096];
      char input[4096];
  
      const char* current_input = input;
      char* current_output = output;
  
      memcpy(input, in_string->buffer, in_string->size);
      guac_iconv(reader, &current_input,  sizeof(input),
                 writer, &current_output, sizeof(output));
  
      /* Verify output length */
      CU_ASSERT_EQUAL(out_string->size, current_output - output);
  
      /* Verify entire input read */
      CU_ASSERT_EQUAL(in_string->size, current_input - input);
  
      /* Verify output content */
      CU_ASSERT_EQUAL(0, memcmp(output, out_string->buffer, out_string->size));
  
  }
  
  /**
   * Test which verifies that every supported encoding can be correctly converted
   * to every other supported encoding, with all line endings preserved verbatim
   * (not normalized).
   */
  void test_iconv__preserve() {
      for (int i = 0; i < NUM_SUPPORTED_ENCODINGS; i++) {
          for (int j = 0; j < NUM_SUPPORTED_ENCODINGS; j++) {
  
              encoding_test_parameters* from = &test_params[i];
              encoding_test_parameters* to = &test_params[j];
  
              printf("# \"%s\" -> \"%s\" ...\n", from->name, to->name);
              verify_conversion(from->reader, &from->test_mixed,
                      to->writer, &to->test_mixed);
  
          }
      }
  }
  
  /**
   * Test which verifies that every supported encoding can be correctly converted
   * to every other supported encoding, normalizing all line endings to
   * Unix-style line endings.
   */
  void test_iconv__normalize_unix() {
      for (int i = 0; i < NUM_SUPPORTED_ENCODINGS; i++) {
          for (int j = 0; j < NUM_SUPPORTED_ENCODINGS; j++) {
  
              encoding_test_parameters* from = &test_params[i];
              encoding_test_parameters* to = &test_params[j];
  
              printf("# \"%s\" -> \"%s\" ...\n", from->name, to->name);
              verify_conversion(from->reader_normalized, &from->test_mixed,
                      to->writer, &to->test_unix);
  
          }
      }
  }
  
  /**
   * Test which verifies that every supported encoding can be correctly converted
   * to every other supported encoding, normalizing all line endings to
   * Windows-style line endings.
   */
  void test_iconv__normalize_crlf() {
      for (int i = 0; i < NUM_SUPPORTED_ENCODINGS; i++) {
          for (int j = 0; j < NUM_SUPPORTED_ENCODINGS; j++) {
  
              encoding_test_parameters* from = &test_params[i];
              encoding_test_parameters* to = &test_params[j];
  
              printf("# \"%s\" -> \"%s\" ...\n", from->name, to->name);
              verify_conversion(from->reader_normalized, &from->test_mixed,
                      to->writer_crlf, &to->test_windows);
  
          }
      }
  }
  
  