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 import org.checkerframework.checker.nullness.qual.Nullable; 25 26 /** 27 * Test cases for {@link Tables#transformValues}. 28 * 29 * @author Jared Levy 30 */ 31 @GwtCompatible(emulated = true) 32 public class TablesTransformValuesTest extends AbstractTableTest { 33 34 private static final Function<@Nullable String, @Nullable Character> FIRST_CHARACTER = 35 new Function<@Nullable String, @Nullable Character>() { 36 @Override 37 public @Nullable Character apply(@Nullable String input) { 38 return input == null ? null : input.charAt(0); 39 } 40 }; 41 42 @Override create(Object... data)43 protected Table<String, Integer, Character> create(Object... data) { 44 Table<String, Integer, String> table = HashBasedTable.create(); 45 checkArgument(data.length % 3 == 0); 46 for (int i = 0; i < data.length; i += 3) { 47 String value = (data[i + 2] == null) ? null : (data[i + 2] + "transformed"); 48 table.put((String) data[i], (Integer) data[i + 1], value); 49 } 50 return Tables.transformValues(table, FIRST_CHARACTER); 51 } 52 53 // Null support depends on the underlying table and function. 54 @GwtIncompatible // NullPointerTester 55 @Override testNullPointerInstance()56 public void testNullPointerInstance() {} 57 58 // put() and putAll() aren't supported. 59 @Override testPut()60 public void testPut() { 61 try { 62 table.put("foo", 1, 'a'); 63 fail("Expected UnsupportedOperationException"); 64 } catch (UnsupportedOperationException expected) { 65 } 66 assertSize(0); 67 } 68 69 @Override testPutAllTable()70 public void testPutAllTable() { 71 table = create("foo", 1, 'a', "bar", 1, 'b', "foo", 3, 'c'); 72 Table<String, Integer, Character> other = HashBasedTable.create(); 73 other.put("foo", 1, 'd'); 74 other.put("bar", 2, 'e'); 75 other.put("cat", 2, 'f'); 76 try { 77 table.putAll(other); 78 fail("Expected UnsupportedOperationException"); 79 } catch (UnsupportedOperationException expected) { 80 } 81 assertEquals((Character) 'a', table.get("foo", 1)); 82 assertEquals((Character) 'b', table.get("bar", 1)); 83 assertEquals((Character) 'c', table.get("foo", 3)); 84 assertSize(3); 85 } 86 87 @Override testPutNull()88 public void testPutNull() {} 89 90 @Override testPutNullReplace()91 public void testPutNullReplace() {} 92 93 @Override testRowClearAndPut()94 public void testRowClearAndPut() {} 95 } 96