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.kafka.common.security.oauthbearer.internals.secured.assertion;
  
  import org.apache.kafka.common.KafkaException;
  
  import com.fasterxml.jackson.databind.ObjectMapper;
  
  import org.junit.jupiter.api.Test;
  
  import java.io.File;
  import java.util.List;
  import java.util.Map;
  
  import static org.apache.kafka.test.TestUtils.tempFile;
  import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  public class FileAssertionJwtTemplateTest {
  
      @Test
      public void testBasicUsage() throws Exception {
          String expected = createTemplateJson(
              Map.of("typ", "JWT", "alg", "RS256"),
              Map.of("sub", "jdoe")
          );
  
          File tmpFile = tempFile(expected);
  
          try (AssertionJwtTemplate template = new FileAssertionJwtTemplate(tmpFile)) {
              Map<String, Object> header = template.header();
              assertNotNull(header);
              assertEquals("JWT", header.get("typ"));
              assertEquals("RS256", header.get("alg"));
  
              Map<String, Object> payload = template.payload();
              assertNotNull(payload);
              assertEquals("jdoe", payload.get("sub"));
          }
      }
  
      @Test
      public void testHeaderOnly() throws Exception {
          String expected = toJson(
              Map.of(
                  "header",
                  Map.of("typ", "JWT", "alg", "RS256")
              )
          );
  
          File tmpFile = tempFile(expected);
  
          try (AssertionJwtTemplate template = new FileAssertionJwtTemplate(tmpFile)) {
              Map<String, Object> header = template.header();
              assertNotNull(header);
              assertEquals("JWT", header.get("typ"));
              assertEquals("RS256", header.get("alg"));
  
              Map<String, Object> payload = template.payload();
              assertNotNull(payload);
              assertTrue(payload.isEmpty());
          }
      }
  
      @Test
      public void testPayloadOnly() throws Exception {
          String expected = toJson(
              Map.of(
                  "payload",
                  Map.of("sub", "jdoe")
              )
          );
  
          File tmpFile = tempFile(expected);
  
          try (AssertionJwtTemplate template = new FileAssertionJwtTemplate(tmpFile)) {
              Map<String, Object> header = template.header();
              assertNotNull(header);
              assertTrue(header.isEmpty());
  
              Map<String, Object> payload = template.payload();
              assertNotNull(payload);
              assertEquals("jdoe", payload.get("sub"));
          }
      }
  
      @Test
      public void testMalformedFile() throws Exception {
          String expected = "{invalid-json}";
          File tmpFile = tempFile(expected);
  
          assertThrows(KafkaException.class, () -> new FileAssertionJwtTemplate(tmpFile));
      }
  
      @Test
      public void testMalformedFormat() throws Exception {
          String expected = toJson(Map.of("header", List.of("foo", "bar", "baz")));
          File tmpFile = tempFile(expected);
  
          assertThrows(KafkaException.class, () -> new FileAssertionJwtTemplate(tmpFile));
      }
  
      private String createTemplateJson(Map<String, Object> header, Map<String, Object> payload) {
          Map<String, Object> topLevel = Map.of("header", header, "payload", payload);
          return toJson(topLevel);
      }
  
      private String toJson(Map<String, Object> map) {
          ObjectMapper mapper = new ObjectMapper();
          return assertDoesNotThrow(() -> mapper.writeValueAsString(map));
      }
  }
  