/*
    * Copyright (C) 2009 The Guava Authors
    *
    * Licensed 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 com.google.common.collect;
  
  import com.google.common.annotations.GwtCompatible;
  import com.google.common.annotations.GwtIncompatible;
  import com.google.common.testing.EqualsTester;
  
  /**
   * Tests {@link EmptyImmutableTable}
   *
   * @author Gregory Kick
   */
  @GwtCompatible(emulated = true)
  public class EmptyImmutableTableTest extends AbstractImmutableTableTest {
    private static final ImmutableTable<Character, Integer, String> INSTANCE = ImmutableTable.of();
  
    @Override Iterable<ImmutableTable<Character, Integer, String>> getTestInstances() {
      return ImmutableSet.of(INSTANCE);
    }
  
    public void testHashCode() {
      assertEquals(0, INSTANCE.hashCode());
    }
  
    public void testEqualsObject() {
      Table<Character, Integer, String> nonEmptyTable = HashBasedTable.create();
      nonEmptyTable.put('A', 1, "blah");
  
      new EqualsTester()
          .addEqualityGroup(INSTANCE, HashBasedTable.create(), TreeBasedTable.create())
          .addEqualityGroup(nonEmptyTable)
          .testEquals();
    }
  
    @GwtIncompatible("ArrayTable")
    public void testEqualsObjectNullValues() {
      new EqualsTester()
          .addEqualityGroup(INSTANCE)
          .addEqualityGroup(ArrayTable.create(ImmutableSet.of('A'), ImmutableSet.of(1)))
          .testEquals();
    }
  
    public void testToString() {
      assertEquals("{}", INSTANCE.toString());
    }
  
    public void testSize() {
      assertEquals(0, INSTANCE.size());
    }
  
    public void testGet() {
      assertNull(INSTANCE.get('a', 1));
    }
  
    public void testIsEmpty() {
      assertTrue(INSTANCE.isEmpty());
    }
  
    public void testCellSet() {
      assertEquals(ImmutableSet.of(), INSTANCE.cellSet());
    }
  
    public void testColumn() {
      assertEquals(ImmutableMap.of(), INSTANCE.column(1));
    }
  
    public void testColumnKeySet() {
      assertEquals(ImmutableSet.of(), INSTANCE.columnKeySet());
    }
  
    public void testColumnMap() {
      assertEquals(ImmutableMap.of(), INSTANCE.columnMap());
    }
  
    public void testContains() {
      assertFalse(INSTANCE.contains('a', 1));
    }
  
    public void testContainsColumn() {
      assertFalse(INSTANCE.containsColumn(1));
    }
  
    public void testContainsRow() {
      assertFalse(INSTANCE.containsRow('a'));
   }
 
   public void testContainsValue() {
     assertFalse(INSTANCE.containsValue("blah"));
   }
 
   public void testRow() {
     assertEquals(ImmutableMap.of(), INSTANCE.row('a'));
   }
 
   public void testRowKeySet() {
     assertEquals(ImmutableSet.of(), INSTANCE.rowKeySet());
   }
 
   public void testRowMap() {
     assertEquals(ImmutableMap.of(), INSTANCE.rowMap());
   }
 
   public void testValues() {
     assertTrue(INSTANCE.values().isEmpty());
   }
 }