| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.commons.codec.binary; |
| |
| import java.io.UnsupportedEncodingException; |
| import java.nio.ByteBuffer; |
| import java.nio.charset.StandardCharsets; |
| import java.util.Arrays; |
| |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| /** |
| * Tests {@link StringUtils} |
| * |
| */ |
| public class StringUtilsTest { |
| |
| private static final byte[] BYTES_FIXTURE = {'a','b','c'}; |
| |
| // This is valid input for UTF-16BE |
| private static final byte[] BYTES_FIXTURE_16BE = {0, 'a', 0, 'b', 0, 'c'}; |
| |
| // This is valid for UTF-16LE |
| private static final byte[] BYTES_FIXTURE_16LE = {'a', 0, 'b', 0, 'c', 0}; |
| |
| private static final String STRING_FIXTURE = "ABC"; |
| |
| /** |
| * We could make the constructor private but there does not seem to be a point to jumping through extra code hoops |
| * to restrict instantiation right now. |
| */ |
| @Test |
| public void testConstructor() { |
| new StringUtils(); |
| } |
| |
| @Test |
| public void testGetBytesIso8859_1() throws UnsupportedEncodingException { |
| final String charsetName = "ISO-8859-1"; |
| testGetBytesUnchecked(charsetName); |
| final byte[] expected = STRING_FIXTURE.getBytes(charsetName); |
| final byte[] actual = StringUtils.getBytesIso8859_1(STRING_FIXTURE); |
| Assert.assertTrue(Arrays.equals(expected, actual)); |
| } |
| |
| private void testGetBytesUnchecked(final String charsetName) throws UnsupportedEncodingException { |
| final byte[] expected = STRING_FIXTURE.getBytes(charsetName); |
| final byte[] actual = StringUtils.getBytesUnchecked(STRING_FIXTURE, charsetName); |
| Assert.assertTrue(Arrays.equals(expected, actual)); |
| } |
| |
| @Test |
| public void testGetBytesUsAscii() throws UnsupportedEncodingException { |
| final String charsetName = "US-ASCII"; |
| testGetBytesUnchecked(charsetName); |
| final byte[] expected = STRING_FIXTURE.getBytes(charsetName); |
| final byte[] actual = StringUtils.getBytesUsAscii(STRING_FIXTURE); |
| Assert.assertTrue(Arrays.equals(expected, actual)); |
| } |
| |
| @Test |
| public void testGetBytesUtf16() throws UnsupportedEncodingException { |
| final String charsetName = "UTF-16"; |
| testGetBytesUnchecked(charsetName); |
| final byte[] expected = STRING_FIXTURE.getBytes(charsetName); |
| final byte[] actual = StringUtils.getBytesUtf16(STRING_FIXTURE); |
| Assert.assertTrue(Arrays.equals(expected, actual)); |
| } |
| |
| @Test |
| public void testGetBytesUtf16Be() throws UnsupportedEncodingException { |
| final String charsetName = "UTF-16BE"; |
| testGetBytesUnchecked(charsetName); |
| final byte[] expected = STRING_FIXTURE.getBytes(charsetName); |
| final byte[] actual = StringUtils.getBytesUtf16Be(STRING_FIXTURE); |
| Assert.assertTrue(Arrays.equals(expected, actual)); |
| } |
| |
| @Test |
| public void testGetBytesUtf16Le() throws UnsupportedEncodingException { |
| final String charsetName = "UTF-16LE"; |
| testGetBytesUnchecked(charsetName); |
| final byte[] expected = STRING_FIXTURE.getBytes(charsetName); |
| final byte[] actual = StringUtils.getBytesUtf16Le(STRING_FIXTURE); |
| Assert.assertTrue(Arrays.equals(expected, actual)); |
| } |
| |
| @Test |
| public void testGetBytesUtf8() throws UnsupportedEncodingException { |
| final String charsetName = "UTF-8"; |
| testGetBytesUnchecked(charsetName); |
| final byte[] expected = STRING_FIXTURE.getBytes(charsetName); |
| final byte[] actual = StringUtils.getBytesUtf8(STRING_FIXTURE); |
| Assert.assertTrue(Arrays.equals(expected, actual)); |
| } |
| |
| @Test |
| public void testGetBytesUncheckedBadName() { |
| try { |
| StringUtils.getBytesUnchecked(STRING_FIXTURE, "UNKNOWN"); |
| Assert.fail("Expected " + IllegalStateException.class.getName()); |
| } catch (final IllegalStateException e) { |
| // Expected |
| } |
| } |
| |
| @Test |
| public void testGetBytesUncheckedNullInput() { |
| Assert.assertNull(StringUtils.getBytesUnchecked(null, "UNKNOWN")); |
| } |
| |
| private void testNewString(final String charsetName) throws UnsupportedEncodingException { |
| final String expected = new String(BYTES_FIXTURE, charsetName); |
| final String actual = StringUtils.newString(BYTES_FIXTURE, charsetName); |
| Assert.assertEquals(expected, actual); |
| } |
| |
| @Test |
| public void testNewStringBadEnc() { |
| try { |
| StringUtils.newString(BYTES_FIXTURE, "UNKNOWN"); |
| Assert.fail("Expected " + IllegalStateException.class.getName()); |
| } catch (final IllegalStateException e) { |
| // Expected |
| } |
| } |
| |
| @Test |
| public void testNewStringNullInput() { |
| Assert.assertNull(StringUtils.newString(null, "UNKNOWN")); |
| } |
| |
| @Test |
| public void testNewStringNullInput_CODEC229() { |
| Assert.assertNull(StringUtils.newStringUtf8(null)); |
| Assert.assertNull(StringUtils.newStringIso8859_1(null)); |
| Assert.assertNull(StringUtils.newStringUsAscii(null)); |
| Assert.assertNull(StringUtils.newStringUtf16(null)); |
| Assert.assertNull(StringUtils.newStringUtf16Be(null)); |
| Assert.assertNull(StringUtils.newStringUtf16Le(null)); |
| } |
| |
| @Test |
| public void testNewStringIso8859_1() throws UnsupportedEncodingException { |
| final String charsetName = "ISO-8859-1"; |
| testNewString(charsetName); |
| final String expected = new String(BYTES_FIXTURE, charsetName); |
| final String actual = StringUtils.newStringIso8859_1(BYTES_FIXTURE); |
| Assert.assertEquals(expected, actual); |
| } |
| |
| @Test |
| public void testNewStringUsAscii() throws UnsupportedEncodingException { |
| final String charsetName = "US-ASCII"; |
| testNewString(charsetName); |
| final String expected = new String(BYTES_FIXTURE, charsetName); |
| final String actual = StringUtils.newStringUsAscii(BYTES_FIXTURE); |
| Assert.assertEquals(expected, actual); |
| } |
| |
| @Test |
| public void testNewStringUtf16() throws UnsupportedEncodingException { |
| final String charsetName = "UTF-16"; |
| testNewString(charsetName); |
| final String expected = new String(BYTES_FIXTURE, charsetName); |
| final String actual = StringUtils.newStringUtf16(BYTES_FIXTURE); |
| Assert.assertEquals(expected, actual); |
| } |
| |
| @Test |
| public void testNewStringUtf16Be() throws UnsupportedEncodingException { |
| final String charsetName = "UTF-16BE"; |
| testNewString(charsetName); |
| final String expected = new String(BYTES_FIXTURE_16BE, charsetName); |
| final String actual = StringUtils.newStringUtf16Be(BYTES_FIXTURE_16BE); |
| Assert.assertEquals(expected, actual); |
| } |
| |
| @Test |
| public void testNewStringUtf16Le() throws UnsupportedEncodingException { |
| final String charsetName = "UTF-16LE"; |
| testNewString(charsetName); |
| final String expected = new String(BYTES_FIXTURE_16LE, charsetName); |
| final String actual = StringUtils.newStringUtf16Le(BYTES_FIXTURE_16LE); |
| Assert.assertEquals(expected, actual); |
| } |
| |
| @Test |
| public void testNewStringUtf8() throws UnsupportedEncodingException { |
| final String charsetName = "UTF-8"; |
| testNewString(charsetName); |
| final String expected = new String(BYTES_FIXTURE, charsetName); |
| final String actual = StringUtils.newStringUtf8(BYTES_FIXTURE); |
| Assert.assertEquals(expected, actual); |
| } |
| |
| @Test |
| public void testEqualsString() { |
| Assert.assertTrue(StringUtils.equals(null, null)); |
| Assert.assertFalse(StringUtils.equals("abc", null)); |
| Assert.assertFalse(StringUtils.equals(null, "abc")); |
| Assert.assertTrue(StringUtils.equals("abc", "abc")); |
| Assert.assertFalse(StringUtils.equals("abc", "abcd")); |
| Assert.assertFalse(StringUtils.equals("abcd", "abc")); |
| Assert.assertFalse(StringUtils.equals("abc", "ABC")); |
| } |
| |
| @Test |
| public void testEqualsCS1() { |
| Assert.assertFalse(StringUtils.equals(new StringBuilder("abc"), null)); |
| Assert.assertFalse(StringUtils.equals(null, new StringBuilder("abc"))); |
| Assert.assertTrue(StringUtils.equals(new StringBuilder("abc"), new StringBuilder("abc"))); |
| Assert.assertFalse(StringUtils.equals(new StringBuilder("abc"), new StringBuilder("abcd"))); |
| Assert.assertFalse(StringUtils.equals(new StringBuilder("abcd"), new StringBuilder("abc"))); |
| Assert.assertFalse(StringUtils.equals(new StringBuilder("abc"), new StringBuilder("ABC"))); |
| } |
| |
| @Test |
| public void testEqualsCS2() { |
| Assert.assertTrue(StringUtils.equals("abc", new StringBuilder("abc"))); |
| Assert.assertFalse(StringUtils.equals(new StringBuilder("abc"), "abcd")); |
| Assert.assertFalse(StringUtils.equals("abcd", new StringBuilder("abc"))); |
| Assert.assertFalse(StringUtils.equals(new StringBuilder("abc"), "ABC")); |
| } |
| |
| @Test |
| public void testByteBufferUtf8() { |
| Assert.assertNull("Should be null safe", StringUtils.getByteBufferUtf8(null)); |
| final String text = "asdhjfhsadiogasdjhagsdygfjasfgsdaksjdhfk"; |
| final ByteBuffer bb = StringUtils.getByteBufferUtf8(text); |
| Assert.assertArrayEquals(text.getBytes(StandardCharsets.UTF_8), bb.array()); |
| } |
| } |