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 36 public Character apply(String input) { 37 return input == null ? null : input.charAt(0); 38 } 39 }; 40 41 @Override create(Object... data)42 protected Table<String, Integer, Character> create(Object... data) { 43 Table<String, Integer, String> table = HashBasedTable.create(); 44 checkArgument(data.length % 3 == 0); 45 for (int i = 0; i < data.length; i += 3) { 46 String value = (data[i + 2] == null) ? null : (data[i + 2] + "transformed"); 47 table.put((String) data[i], (Integer) data[i + 1], value); 48 } 49 return Tables.transformValues(table, FIRST_CHARACTER); 50 } 51 52 // Null support depends on the underlying table and function. 53 @GwtIncompatible // NullPointerTester 54 @Override testNullPointerInstance()55 public void testNullPointerInstance() {} 56 57 // put() and putAll() aren't supported. 58 @Override testPut()59 public void testPut() { 60 try { 61 table.put("foo", 1, 'a'); 62 fail("Expected UnsupportedOperationException"); 63 } catch (UnsupportedOperationException expected) { 64 } 65 assertSize(0); 66 } 67 68 @Override testPutAllTable()69 public void testPutAllTable() { 70 table = create("foo", 1, 'a', "bar", 1, 'b', "foo", 3, 'c'); 71 Table<String, Integer, Character> other = HashBasedTable.create(); 72 other.put("foo", 1, 'd'); 73 other.put("bar", 2, 'e'); 74 other.put("cat", 2, 'f'); 75 try { 76 table.putAll(other); 77 fail("Expected UnsupportedOperationException"); 78 } catch (UnsupportedOperationException expected) { 79 } 80 assertEquals((Character) 'a', table.get("foo", 1)); 81 assertEquals((Character) 'b', table.get("bar", 1)); 82 assertEquals((Character) 'c', table.get("foo", 3)); 83 assertSize(3); 84 } 85 86 @Override testPutNull()87 public void testPutNull() {} 88 89 @Override testPutNullReplace()90 public void testPutNullReplace() {} 91 92 @Override testRowClearAndPut()93 public void testRowClearAndPut() {} 94 } 95