/*
    * 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.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertNull;
  
  import java.text.SimpleDateFormat;
  import java.util.Date;
  import java.util.HashMap;
  import java.util.Map;
  
  import org.junit.jupiter.api.AfterAll;
  import org.junit.jupiter.api.BeforeAll;
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests {@link InterpolatorStringLookup}.
   */
  class InterpolatorStringLookupTest {
  
      private static final String TESTKEY = "TestKey";
  
      private static final String TESTKEY2 = "TestKey2";
  
      private static final String TESTVAL = "TestValue";
  
      @AfterAll
      public static void afterAll() {
          System.clearProperty(TESTKEY);
          System.clearProperty(TESTKEY2);
      }
  
      @BeforeAll
      public static void beforeAll() {
          System.setProperty(TESTKEY, TESTVAL);
          System.setProperty(TESTKEY2, TESTVAL);
      }
  
      private void assertLookupNotEmpty(final StringLookup lookup, final String key) {
          final String value = lookup.apply(key);
          assertNotNull(value);
          assertFalse(value.isEmpty());
          // System.out.println(key + " = " + value);
      }
  
      private void check(final StringLookup lookup) {
          String value = lookup.apply("sys:" + TESTKEY);
          assertEquals(TESTVAL, value);
          value = lookup.apply("env:PATH");
          assertNotNull(value);
          value = lookup.apply("date:yyyy-MM-dd");
          assertNotNull(value, "No Date");
          final SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
          final String today = format.format(new Date());
          assertEquals(value, today);
          assertLookupNotEmpty(lookup, "java:version");
          assertLookupNotEmpty(lookup, "java:runtime");
          assertLookupNotEmpty(lookup, "java:vm");
          assertLookupNotEmpty(lookup, "java:os");
          assertLookupNotEmpty(lookup, "java:locale");
          assertLookupNotEmpty(lookup, "java:hardware");
      }
  
      @Test
      void testLookup() {
          final Map<String, String> map = new HashMap<>();
          map.put(TESTKEY, TESTVAL);
          final StringLookup lookup = new InterpolatorStringLookup(StringLookupFactory.INSTANCE.mapStringLookup(map));
          String value = lookup.apply(TESTKEY);
          assertEquals(TESTVAL, value);
          value = lookup.apply("ctx:" + TESTKEY);
          assertEquals(TESTVAL, value);
          value = lookup.apply("sys:" + TESTKEY);
          assertEquals(TESTVAL, value);
          value = lookup.apply("BadKey");
          assertNull(value);
          value = lookup.apply("ctx:" + TESTKEY);
          assertEquals(TESTVAL, value);
      }
  
      @Test
      void testLookupKeys() {
         final InterpolatorStringLookup lookup = new InterpolatorStringLookup((Map<String, Object>) null);
         final Map<String, StringLookup> stringLookupMap = lookup.getStringLookupMap();
         StringLookupFactoryTest.assertDefaultKeys(stringLookupMap);
     }
 
     @Test
     void testLookupWithDefaultInterpolator() {
         check(new InterpolatorStringLookup());
     }
 
     @Test
     void testLookupWithNullDefaultInterpolator() {
         check(new InterpolatorStringLookup((StringLookup) null));
     }
 
     @Test
     void testNull() {
         assertNull(InterpolatorStringLookup.INSTANCE.apply(null));
     }
 
     @Test
     void testToString() {
         // does not blow up and gives some kind of string.
         assertFalse(new InterpolatorStringLookup().toString().isEmpty());
     }
 }