1 /* 2 * Copyright (C) 2007 The Android Open Source Project 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 android.database; 18 19 import junit.framework.TestCase; 20 21 import java.util.*; 22 23 public class MatrixCursorTest extends TestCase { 24 25 public void testEmptyCursor() { 26 Cursor cursor = new MatrixCursor(new String[] { "a" }); 27 assertEquals(0, cursor.getCount()); 28 } 29 30 public void testNullValue() { 31 MatrixCursor cursor = new MatrixCursor(new String[] { "a" }); 32 cursor.newRow().add(null); 33 cursor.moveToNext(); 34 assertTrue(cursor.isNull(0)); 35 assertNull(cursor.getString(0)); 36 assertEquals(0, cursor.getShort(0)); 37 assertEquals(0, cursor.getInt(0)); 38 assertEquals(0L, cursor.getLong(0)); 39 assertEquals(0.0f, cursor.getFloat(0)); 40 assertEquals(0.0d, cursor.getDouble(0)); 41 } 42 43 public void testMatrixCursor() { 44 MatrixCursor cursor = newMatrixCursor(); 45 46 cursor.newRow() 47 .add("a") 48 .add(1) 49 .add(2) 50 .add(3) 51 .add(4) 52 .add(5); 53 54 cursor.moveToNext(); 55 56 checkValues(cursor); 57 58 cursor.newRow() 59 .add("a") 60 .add("1") 61 .add("2") 62 .add("3") 63 .add("4") 64 .add("5"); 65 66 cursor.moveToNext(); 67 checkValues(cursor); 68 69 cursor.moveToPrevious(); 70 checkValues(cursor); 71 } 72 73 public void testAddArray() { 74 MatrixCursor cursor = newMatrixCursor(); 75 76 cursor.addRow(new Object[] { "a", 1, 2, 3, 4, 5 }); 77 cursor.moveToNext(); 78 checkValues(cursor); 79 80 try { 81 cursor.addRow(new Object[0]); 82 fail(); 83 } catch (IllegalArgumentException e) { /* expected */ } 84 } 85 86 public void testAddIterable() { 87 MatrixCursor cursor = newMatrixCursor(); 88 89 cursor.addRow(Arrays.asList("a", 1, 2, 3, 4, 5)); 90 cursor.moveToNext(); 91 checkValues(cursor); 92 93 try { 94 cursor.addRow(Collections.emptyList()); 95 fail(); 96 } catch (IllegalArgumentException e) { /* expected */ } 97 98 try { 99 cursor.addRow(Arrays.asList("a", 1, 2, 3, 4, 5, "Too many!")); 100 fail(); 101 } catch (IllegalArgumentException e) { /* expected */ } 102 } 103 104 public void testAddArrayList() { 105 MatrixCursor cursor = newMatrixCursor(); 106 107 cursor.addRow(new NonIterableArrayList<Object>( 108 Arrays.asList("a", 1, 2, 3, 4, 5))); 109 cursor.moveToNext(); 110 checkValues(cursor); 111 112 try { 113 cursor.addRow(new NonIterableArrayList<Object>()); 114 fail(); 115 } catch (IllegalArgumentException e) { /* expected */ } 116 117 try { 118 cursor.addRow(new NonIterableArrayList<Object>( 119 Arrays.asList("a", 1, 2, 3, 4, 5, "Too many!"))); 120 fail(); 121 } catch (IllegalArgumentException e) { /* expected */ } 122 } 123 124 static class NonIterableArrayList<T> extends ArrayList<T> { 125 126 NonIterableArrayList() {} 127 128 NonIterableArrayList(Collection<? extends T> ts) { 129 super(ts); 130 } 131 132 @Override 133 public Iterator<T> iterator() { 134 throw new AssertionError(); 135 } 136 } 137 138 private MatrixCursor newMatrixCursor() { 139 return new MatrixCursor(new String[] { 140 "string", "short", "int", "long", "float", "double" }); 141 } 142 143 private void checkValues(MatrixCursor cursor) { 144 assertEquals("a", cursor.getString(0)); 145 assertEquals(1, cursor.getShort(1)); 146 assertEquals(2, cursor.getInt(2)); 147 assertEquals(3, cursor.getLong(3)); 148 assertEquals(4.0f, cursor.getFloat(4)); 149 assertEquals(5.0D, cursor.getDouble(5)); 150 } 151 152 } 153