58 lines
1.8 KiB
Java
58 lines
1.8 KiB
Java
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.email;
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import java.nio.ByteBuffer;
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import java.nio.CharBuffer;
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import junit.framework.TestCase;
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/**
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* Utility methods used only by tests.
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*/
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public class TestUtils extends TestCase /* It tests itself */ {
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/** Shortcut to create byte array */
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public static byte[] b(int... array) {
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if (array == null) {
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return null;
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}
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byte[] ret = new byte[array.length];
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for (int i = 0; i < ret.length; i++) {
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ret[i] = (byte) array[i];
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}
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return ret;
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}
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/** Converts a String from UTF-8 */
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public static String fromUtf8(byte[] b) {
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if (b == null) {
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return null;
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}
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final CharBuffer cb = Utility.UTF_8.decode(ByteBuffer.wrap(b));
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return new String(cb.array(), 0, cb.length());
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}
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public void testUtf8() {
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assertNull(fromUtf8(null));
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assertEquals("", fromUtf8(new byte[] {}));
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assertEquals("a", fromUtf8(b('a')));
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assertEquals("ABC", fromUtf8(b('A', 'B', 'C')));
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assertEquals("\u65E5\u672C\u8A9E",
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fromUtf8(b(0xE6, 0x97, 0xA5, 0xE6, 0x9C, 0xAC, 0xE8, 0xAA, 0x9E)));
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}
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}
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