1 /* 2 * Copyright (C) 2011 The Guava Authors 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.common.collect; 18 19 import static com.google.common.base.Preconditions.checkArgument; 20 21 import com.google.common.annotations.GwtCompatible; 22 import com.google.common.annotations.GwtIncompatible; 23 import com.google.common.base.Function; 24 25 /** 26 * Test cases for {@link Tables#transformValues}. 27 * 28 * @author Jared Levy 29 */ 30 @GwtCompatible(emulated = true) 31 public class TablesTransformValuesTest extends AbstractTableTest { 32 33 private static final Function<String, Character> FIRST_CHARACTER 34 = new Function<String, Character>() { 35 @Override public Character apply(String input) { 36 return input == null ? null : input.charAt(0); 37 } 38 }; 39 40 @Override protected Table<String, Integer, Character> create( 41 Object... data) { 42 Table<String, Integer, String> table = HashBasedTable.create(); 43 checkArgument(data.length % 3 == 0); 44 for (int i = 0; i < data.length; i+= 3) { 45 String value = (data[i+2] == null) ? null : data[i+2].toString() + "transformed"; 46 table.put((String) data[i], (Integer) data[i+1], value); 47 } 48 return Tables.transformValues(table, FIRST_CHARACTER); 49 } 50 51 // Null support depends on the underlying table and function. 52 @GwtIncompatible("NullPointerTester") 53 @Override public void testNullPointerInstance() throws Exception {} 54 55 // put() and putAll() aren't supported. 56 @Override public void testPut() { 57 try { 58 table.put("foo", 1, 'a'); 59 fail("Expected UnsupportedOperationException"); 60 } catch (UnsupportedOperationException expected) {} 61 assertSize(0); 62 } 63 64 @Override public void testPutAllTable() { 65 table = create("foo", 1, 'a', "bar", 1, 'b', "foo", 3, 'c'); 66 Table<String, Integer, Character> other = HashBasedTable.create(); 67 other.put("foo", 1, 'd'); 68 other.put("bar", 2, 'e'); 69 other.put("cat", 2, 'f'); 70 try { 71 table.putAll(other); 72 fail("Expected UnsupportedOperationException"); 73 } catch (UnsupportedOperationException expected) {} 74 assertEquals((Character) 'a', table.get("foo", 1)); 75 assertEquals((Character) 'b', table.get("bar", 1)); 76 assertEquals((Character) 'c', table.get("foo", 3)); 77 assertSize(3); 78 } 79 80 @Override public void testPutNull() {} 81 @Override public void testPutNullReplace() {} 82 @Override public void testRowClearAndPut() {} 83 } 84
