/*
    * SPDX-FileCopyrightText: Copyright (c) 2011-2025 Yegor Bugayenko
    * SPDX-License-Identifier: MIT
    */
   package com.jcabi.http.response;
   
   import com.fasterxml.jackson.databind.node.ArrayNode;
   import com.fasterxml.jackson.databind.node.ObjectNode;
   import com.jcabi.http.request.FakeRequest;
  import java.io.IOException;
  import org.hamcrest.MatcherAssert;
  import org.hamcrest.Matchers;
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.Test;
  
  /**
   * Test case for {@link JacksonResponse}.
   *
   * @since 1.17
   */
  final class JacksonResponseTest {
      /**
       * JacksonResponse can read and return a JSON document.
       *
       * @throws IOException If anything goes wrong when parsing.
       */
      @Test
      void canReadJsonDocument() throws IOException {
          final JacksonResponse response = new FakeRequest()
              .withBody("{\n\t\r\"foo-foo\":2,\n\"bar\":\"\u20ac\"}")
              .fetch().as(JacksonResponse.class);
          MatcherAssert.assertThat(
              "should be 2",
              response.json().read().path("foo-foo").asInt(),
              Matchers.equalTo(2)
          );
          MatcherAssert.assertThat(
              "should be '\u20ac'",
              response.json().read().path("bar").asText(),
              Matchers.equalTo("\u20ac")
          );
      }
  
      /**
       * JacksonResponse can read control characters.
       *
       * @throws IOException If anything goes wrong when parsing.
       */
      @Test
      void canParseUnquotedControlCharacters() throws IOException {
          final JacksonResponse response = new FakeRequest()
              .withBody("{\"test\":\n\"\u001Fblah\uFFFDcwhoa\u0000!\"}")
              .fetch().as(JacksonResponse.class);
          MatcherAssert.assertThat(
              "should be '\u001Fblah\uFFFDcwhoa\u0000!'",
              response.json().readObject().get("test").asText(),
              Matchers.is("\u001Fblah\uFFFDcwhoa\u0000!")
          );
      }
  
      /**
       * If there's a problem parsing the body as JSON the error handling is done
       * by Jackson.
       *
       * @throws IOException If anything goes wrong.
       */
      @Test
      void invalidJsonErrorHandlingIsLeftToJackson() throws IOException {
          final String body = "{test:[]}";
          final String err = "was expecting double-quote to start field name";
          final JacksonResponse response = new FakeRequest()
              .withBody(body).fetch().as(JacksonResponse.class);
          MatcherAssert.assertThat(
              "should contains error 'was expecting double-quote to start field name'",
              Assertions.assertThrows(
                  IOException.class,
                  () -> response.json().read()
              ),
              Matchers.hasProperty(
                  "message",
                  Matchers.containsString(err)
              )
          );
      }
  
      /**
       * If there's a problem parsing the body as JSON the error handling is done
       * by Jackson.
       *
       * @throws IOException If anything goes wrong.
       */
      @Test
      void invalidJsonArrayErrorHandlingIsLeftToJackson()
          throws IOException {
          final JacksonResponse response = new FakeRequest()
              .withBody("{\"anInvalidArrayTest\":[}")
              .fetch().as(JacksonResponse.class);
          MatcherAssert.assertThat(
              "should contains error 'Unexpected close marker'",
             Assertions.assertThrows(
                 IOException.class,
                 () -> response.json().readArray()
             ),
             Matchers.hasToString(
                 Matchers.containsString("Unexpected close marker")
             )
         );
     }
 
     /**
      * If the parsed JSON is a valid one but an array an exception is raised.
      *
      * @throws IOException If anything goes wrong.
      */
     @Test
     void cannotReadJsonAsArrayIfNotOne() throws IOException {
         final JacksonResponse response = new FakeRequest()
             .withBody("{\"objectIsNotArray\": \"It's not!\"}")
             .fetch().as(JacksonResponse.class);
         MatcherAssert.assertThat(
             "should contains 'Cannot read as an array. The JSON is not a valid array.'",
             Assertions.assertThrows(
                 IOException.class,
                 () -> response.json().readArray()
             ),
             Matchers.<IOException>hasToString(
                 Matchers.containsString(
                     "Cannot read as an array. The JSON is not a valid array."
                 )
             )
         );
     }
 
     /**
      * Can retrieve the JSON as an array node if it's a valid one.
      *
      * @throws IOException If anything goes wrong.
      */
     @Test
     void canReadAsArrayIfOne() throws IOException {
         final JacksonResponse response = new FakeRequest()
             .withBody("[\"one\", \"two\"]")
             .fetch().as(JacksonResponse.class);
         final ArrayNode array = response.json().readArray();
         MatcherAssert.assertThat(
             "should be 'one'", array.get(0).asText(), Matchers.is("one")
         );
         MatcherAssert.assertThat(
             "should be 'one'", array.get(1).asText(), Matchers.is("two")
         );
     }
 
     /**
      * If there's a problem parsing the body as JSON the error handling is done
      * by Jackson.
      *
      * @throws IOException If anything goes wrong.
      */
     @Test
     void invalidJsonObjectErrorIsLeftToJackson() throws IOException {
         final JacksonResponse response = new FakeRequest()
             .withBody("{\"anInvalidObjectTest\":{}")
             .fetch().as(JacksonResponse.class);
         MatcherAssert.assertThat(
             "should contains error 'Unexpected end-of-input: expected close marker for Object",
             Assertions.assertThrows(
                 IOException.class,
                 () -> response.json().readObject()
             ),
             Matchers.<IOException>hasToString(
                 Matchers.containsString(
                     "Unexpected end-of-input: expected close marker for Object"
                 )
             )
         );
     }
 
     /**
      * If the parsed JSON is a valid one but an object an exception is raised.
      *
      * @throws IOException If anything goes wrong.
      */
     @Test
     void cannotReadJsonAsObjectIfNotOne() throws IOException {
         final String body = "[\"arrayIsNotObject\", \"It's not!\"]";
         final JacksonResponse response = new FakeRequest()
             .withBody(body).fetch().as(JacksonResponse.class);
         MatcherAssert.assertThat(
             "should contains error 'Cannot read as an object. The JSON is not a valid object.",
             Assertions.assertThrows(
                 IOException.class,
                 () -> response.json().readObject()
             ),
             Matchers.<IOException>hasToString(
                 Matchers.containsString(
                     "Cannot read as an object. The JSON is not a valid object."
                 )
             )
         );
     }
 
     /**
      * Can retrieve the JSON as an object node if it's a valid one.
      *
      * @throws IOException If anything goes wrong.
      */
     @Test
     void canReadAsObjectIfOne() throws IOException {
         final JacksonResponse response = new FakeRequest()
             .withBody("{\"hooray\": \"Got milk?\"}")
             .fetch().as(JacksonResponse.class);
         final ObjectNode object = response.json().readObject();
         MatcherAssert.assertThat(
             "should contains 'Got milk?", object.get("hooray").asText(), Matchers.is("Got milk?")
         );
     }
 }