/*
    * Copyright (C) 2011 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 static com.google.common.base.Preconditions.checkArgument;
  
  import com.google.common.annotations.GwtCompatible;
  import com.google.common.base.Function;
  
  /**
   * Test cases for {@link Tables#transformValues}.
   *
   * @author Jared Levy
   */
  @GwtCompatible(emulated = true)
  public class TablesTransformValuesTest extends AbstractTableTest {
  
    private static final Function<String, Character> FIRST_CHARACTER
      = new Function<String, Character>() {
        @Override public Character apply(String input) {
          return input == null ? null : input.charAt(0);
        }
    };
  
    @Override protected Table<String, Integer, Character> create(
        Object... data) {
      Table<String, Integer, String> table = HashBasedTable.create();
      checkArgument(data.length % 3 == 0);
      for (int i = 0; i < data.length; i += 3) {
        String value =
            (data[i + 2] == null) ? null : (data[i + 2] + "transformed");
        table.put((String) data[i], (Integer) data[i + 1], value);
      }
      return Tables.transformValues(table, FIRST_CHARACTER);
    }
  
    // Null support depends on the underlying table and function.
  
    // put() and putAll() aren't supported.
    @Override public void testPut() {
      try {
        table.put("foo", 1, 'a');
        fail("Expected UnsupportedOperationException");
      } catch (UnsupportedOperationException expected) {}
      assertSize(0);
    }
  
    @Override public void testPutAllTable() {
      table = create("foo", 1, 'a', "bar", 1, 'b', "foo", 3, 'c');
      Table<String, Integer, Character> other = HashBasedTable.create();
      other.put("foo", 1, 'd');
      other.put("bar", 2, 'e');
      other.put("cat", 2, 'f');
      try {
        table.putAll(other);
        fail("Expected UnsupportedOperationException");
      } catch (UnsupportedOperationException expected) {}
      assertEquals((Character) 'a', table.get("foo", 1));
      assertEquals((Character) 'b', table.get("bar", 1));
      assertEquals((Character) 'c', table.get("foo", 3));
      assertSize(3);
    }
  
    @Override public void testPutNull() {}
    @Override public void testPutNullReplace() {}
    @Override public void testRowClearAndPut() {}
  }