| /* |
| * Copyright 2012 Google Inc. |
| * |
| * 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.gwt.typedarrays.shared; |
| |
| import com.google.gwt.junit.client.GWTTestCase; |
| |
| /** |
| * Test {@link DataView} implementations. |
| */ |
| public class DataViewTest extends GWTTestCase { |
| |
| public void testBasic() { |
| if (!TypedArrays.isSupported()) { |
| // TODO: some way of showing test as skipped in this case? |
| return; |
| } |
| int len = 40; |
| ArrayBuffer buf = TypedArrays.createArrayBuffer(len); |
| assertEquals(len, buf.byteLength()); |
| DataView view = TypedArrays.createDataView(buf); |
| assertSame(buf, view.buffer()); |
| assertEquals(len, view.byteLength()); |
| assertEquals(0, view.byteOffset()); |
| |
| // check that it is initialized to zeros |
| for (int i = 0; i < len; ++i) { |
| assertEquals(0, view.getUint8(i)); |
| } |
| |
| // store some data |
| view.setUint8(0, 0x01); |
| view.setUint8(1, 0x20); |
| view.setUint8(2, 0x04); |
| view.setUint8(3, 0x80); |
| |
| // read it out as bytes |
| assertEquals(0x01, view.getUint8(0)); |
| assertEquals(0x20, view.getUint8(1)); |
| assertEquals(0x04, view.getUint8(2)); |
| assertEquals(0x80, view.getUint8(3)); |
| assertEquals(0x01, view.getInt8(0)); |
| assertEquals(0x20, view.getInt8(1)); |
| assertEquals(0x04, view.getInt8(2)); |
| assertEquals(-128, view.getInt8(3)); |
| |
| // read it out as 16-bit values |
| assertEquals(0x0120, view.getUint16(0)); |
| assertEquals(0x0480, view.getUint16(2)); |
| assertEquals(0x2001, view.getUint16(0, true)); |
| assertEquals(0x8004, view.getUint16(2, true)); |
| assertEquals(0x0120, view.getInt16(0)); |
| assertEquals(0x0480, view.getInt16(2)); |
| assertEquals(0x2001, view.getInt16(0, true)); |
| assertEquals((short) 0x8004, view.getInt16(2, true)); |
| |
| // read it out as 32-bit values |
| assertEquals(0x01200480L, view.getUint32(0)); |
| assertEquals(0x80042001L, view.getUint32(0, true)); |
| assertEquals(0x01200480, view.getInt32(0)); |
| assertEquals(0x80042001, view.getInt32(0, true)); |
| } |
| |
| @Override |
| public String getModuleName() { |
| // returns null for a pure Java test |
| return null; |
| } |
| } |