package com.atlassian.plugin.elements;
   
   import java.util.Collections;
   import java.util.HashMap;
   import java.util.Map;
   
   import com.google.common.collect.ImmutableMap;
   
   import org.junit.Test;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNull;
  
  public class ResourceLocationTest
  {
      @Test
      public void paramsAreCopied()
      {
          Map<String, String> params = new HashMap<String, String>();
          params.put("a", "original");
  
          ResourceLocation rl = new ResourceLocation("", "", "", "", "", params);
          params.put("a", "modified");
  
          assertEquals("original", rl.getParams().get("a"));
      }
  
      @Test
      public void paramsAreImmutable()
      {
          Map<String, String> params = new HashMap<String, String>();
          params.put("a", "original");
  
          ResourceLocation rl = new ResourceLocation("", "", "", "", "", params);
  
          try
          {
              rl.getParams().put("a", "modified");
          }
          catch (UnsupportedOperationException e)
          {
              // Okay
          }
  
          assertEquals("original", rl.getParams().get("a"));
      }
  
      @Test(expected = NullPointerException.class)
      public void constructionWithNullParamsFails()
      {
          new ResourceLocation("", "", "", "", "", null);
      }
  
      @Test
      public void constructionWithNullValuesSucceeds()
      {
          Map<String, String> params = Collections.<String, String>singletonMap("key", null);
  
          ResourceLocation rl = new ResourceLocation("", "", "", "", "", params);
          assertNull(rl.getParameter("key"));
      }
  
      @Test
      public void constructionWithNullValuesOmitsParam()
      {
          Map<String, String> params = Collections.<String, String>singletonMap("key", null);
  
          ResourceLocation rl = new ResourceLocation("", "", "", "", "", params);
          assertEquals(Collections.emptyMap(), rl.getParams());
      }
  
      @Test
      public void constructionWithMixedValuesIncludesNonNullParam()
      {
          Map<String, String> params = new HashMap<String, String>();
          params.put("null", null);
          params.put("notnull", "value");
  
          ResourceLocation rl = new ResourceLocation("", "", "", "", "", params);
          assertEquals(ImmutableMap.of("notnull", "value"), rl.getParams());
      }
  
      @Test
      public void constructionWithNullKeyOmitsParam()
      {
          Map<String, String> params = Collections.<String, String>singletonMap(null, "value");
  
          ResourceLocation rl = new ResourceLocation("", "", "", "", "", params);
          assertEquals(Collections.emptyMap(), rl.getParams());
      }
  }