/*
    * 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.text.lookup;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.mockito.Mockito.spy;
  import static org.mockito.Mockito.when;
  
  import java.util.ResourceBundle;
  
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests {@link ResourceBundleStringLookup}.
   */
  class ResourceBundleStringLookupTest {
  
      private static final String KEY = "key";
      private static final String TEST_RESOURCE_BUNDLE = "org.apache.commons.text.example.testResourceBundleLookup";
  
      @Test
      void testAny() {
          final String bundleName = TEST_RESOURCE_BUNDLE;
          final String bundleKey = KEY;
          assertEquals(ResourceBundle.getBundle(bundleName).getString(bundleKey),
              ResourceBundleStringLookup.INSTANCE.apply(AbstractStringLookup.toLookupKey(bundleName, bundleKey)));
      }
  
      @Test
      void testBadKey() {
          final String bundleName = TEST_RESOURCE_BUNDLE;
          final String bundleKey = "bad_key";
          assertNull(new ResourceBundleStringLookup(bundleName).apply(bundleKey));
          assertNull(ResourceBundleStringLookup.INSTANCE.apply(AbstractStringLookup.toLookupKey(bundleName, bundleKey)));
      }
  
      @Test
      void testBadNames() {
          assertNull(ResourceBundleStringLookup.INSTANCE
              .apply(AbstractStringLookup.toLookupKey("BAD_RESOURCE_BUNDLE_NAME", "KEY")));
      }
  
      @Test
      void testDoubleBundle() {
          assertThrows(IllegalArgumentException.class, () -> new ResourceBundleStringLookup(TEST_RESOURCE_BUNDLE)
              .apply(AbstractStringLookup.toLookupKey("OtherBundle", KEY)));
      }
  
      @Test
      void testExceptionGettingString() {
          final ResourceBundleStringLookup mockLookup = spy(ResourceBundleStringLookup.class);
          when(mockLookup.getString(TEST_RESOURCE_BUNDLE, KEY)).thenThrow(ClassCastException.class);
          assertThrows(IllegalArgumentException.class, () -> mockLookup.apply(AbstractStringLookup.toLookupKey(TEST_RESOURCE_BUNDLE, KEY)));
      }
  
      @Test
      void testMissingKeyInSpec() {
          assertThrows(IllegalArgumentException.class, () -> ResourceBundleStringLookup.INSTANCE.apply(TEST_RESOURCE_BUNDLE + ":"));
      }
  
      @Test
      void testNull() {
          assertNull(ResourceBundleStringLookup.INSTANCE.apply(null));
      }
  
      @Test
      void testOne() {
          assertEquals(ResourceBundle.getBundle(TEST_RESOURCE_BUNDLE).getString(KEY),
              new ResourceBundleStringLookup(TEST_RESOURCE_BUNDLE).apply(KEY));
      }
  
      @Test
      void testToString() {
          // does not blow up and gives some kind of string.
          assertFalse(ResourceBundleStringLookup.INSTANCE.toString().isEmpty());
      }
  
  }