Googler | 87dd180 | 2017-12-20 04:34:12 +0100 | [diff] [blame] | 1 | #region Copyright notice and license |
| 2 | // Protocol Buffers - Google's data interchange format |
| 3 | // Copyright 2008 Google Inc. All rights reserved. |
| 4 | // https://developers.google.com/protocol-buffers/ |
| 5 | // |
| 6 | // Redistribution and use in source and binary forms, with or without |
| 7 | // modification, are permitted provided that the following conditions are |
| 8 | // met: |
| 9 | // |
| 10 | // * Redistributions of source code must retain the above copyright |
| 11 | // notice, this list of conditions and the following disclaimer. |
| 12 | // * Redistributions in binary form must reproduce the above |
| 13 | // copyright notice, this list of conditions and the following disclaimer |
| 14 | // in the documentation and/or other materials provided with the |
| 15 | // distribution. |
| 16 | // * Neither the name of Google Inc. nor the names of its |
| 17 | // contributors may be used to endorse or promote products derived from |
| 18 | // this software without specific prior written permission. |
| 19 | // |
| 20 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 21 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 22 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 23 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 24 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 25 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 26 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 27 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 28 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 29 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 30 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 31 | #endregion |
| 32 | |
| 33 | using System; |
| 34 | using System.Text; |
| 35 | using NUnit.Framework; |
| 36 | using System.IO; |
| 37 | #if !NET35 |
| 38 | using System.Threading.Tasks; |
| 39 | #endif |
| 40 | |
| 41 | namespace Google.Protobuf |
| 42 | { |
| 43 | public class ByteStringTest |
| 44 | { |
| 45 | [Test] |
| 46 | public void Equality() |
| 47 | { |
| 48 | ByteString b1 = ByteString.CopyFrom(1, 2, 3); |
| 49 | ByteString b2 = ByteString.CopyFrom(1, 2, 3); |
| 50 | ByteString b3 = ByteString.CopyFrom(1, 2, 4); |
| 51 | ByteString b4 = ByteString.CopyFrom(1, 2, 3, 4); |
| 52 | EqualityTester.AssertEquality(b1, b1); |
| 53 | EqualityTester.AssertEquality(b1, b2); |
| 54 | EqualityTester.AssertInequality(b1, b3); |
| 55 | EqualityTester.AssertInequality(b1, b4); |
| 56 | EqualityTester.AssertInequality(b1, null); |
| 57 | #pragma warning disable 1718 // Deliberately calling ==(b1, b1) and !=(b1, b1) |
| 58 | Assert.IsTrue(b1 == b1); |
| 59 | Assert.IsTrue(b1 == b2); |
| 60 | Assert.IsFalse(b1 == b3); |
| 61 | Assert.IsFalse(b1 == b4); |
| 62 | Assert.IsFalse(b1 == null); |
| 63 | Assert.IsTrue((ByteString) null == null); |
| 64 | Assert.IsFalse(b1 != b1); |
| 65 | Assert.IsFalse(b1 != b2); |
| 66 | #pragma warning disable 1718 |
| 67 | Assert.IsTrue(b1 != b3); |
| 68 | Assert.IsTrue(b1 != b4); |
| 69 | Assert.IsTrue(b1 != null); |
| 70 | Assert.IsFalse((ByteString) null != null); |
| 71 | } |
| 72 | |
| 73 | [Test] |
| 74 | public void EmptyByteStringHasZeroSize() |
| 75 | { |
| 76 | Assert.AreEqual(0, ByteString.Empty.Length); |
| 77 | } |
| 78 | |
| 79 | [Test] |
| 80 | public void CopyFromStringWithExplicitEncoding() |
| 81 | { |
| 82 | ByteString bs = ByteString.CopyFrom("AB", Encoding.Unicode); |
| 83 | Assert.AreEqual(4, bs.Length); |
| 84 | Assert.AreEqual(65, bs[0]); |
| 85 | Assert.AreEqual(0, bs[1]); |
| 86 | Assert.AreEqual(66, bs[2]); |
| 87 | Assert.AreEqual(0, bs[3]); |
| 88 | } |
| 89 | |
| 90 | [Test] |
| 91 | public void IsEmptyWhenEmpty() |
| 92 | { |
| 93 | Assert.IsTrue(ByteString.CopyFromUtf8("").IsEmpty); |
| 94 | } |
| 95 | |
| 96 | [Test] |
| 97 | public void IsEmptyWhenNotEmpty() |
| 98 | { |
| 99 | Assert.IsFalse(ByteString.CopyFromUtf8("X").IsEmpty); |
| 100 | } |
| 101 | |
| 102 | [Test] |
| 103 | public void CopyFromByteArrayCopiesContents() |
| 104 | { |
| 105 | byte[] data = new byte[1]; |
| 106 | data[0] = 10; |
| 107 | ByteString bs = ByteString.CopyFrom(data); |
| 108 | Assert.AreEqual(10, bs[0]); |
| 109 | data[0] = 5; |
| 110 | Assert.AreEqual(10, bs[0]); |
| 111 | } |
| 112 | |
| 113 | [Test] |
| 114 | public void ToByteArrayCopiesContents() |
| 115 | { |
| 116 | ByteString bs = ByteString.CopyFromUtf8("Hello"); |
| 117 | byte[] data = bs.ToByteArray(); |
| 118 | Assert.AreEqual((byte)'H', data[0]); |
| 119 | Assert.AreEqual((byte)'H', bs[0]); |
| 120 | data[0] = 0; |
| 121 | Assert.AreEqual(0, data[0]); |
| 122 | Assert.AreEqual((byte)'H', bs[0]); |
| 123 | } |
| 124 | |
| 125 | [Test] |
| 126 | public void CopyFromUtf8UsesUtf8() |
| 127 | { |
| 128 | ByteString bs = ByteString.CopyFromUtf8("\u20ac"); |
| 129 | Assert.AreEqual(3, bs.Length); |
| 130 | Assert.AreEqual(0xe2, bs[0]); |
| 131 | Assert.AreEqual(0x82, bs[1]); |
| 132 | Assert.AreEqual(0xac, bs[2]); |
| 133 | } |
| 134 | |
| 135 | [Test] |
| 136 | public void CopyFromPortion() |
| 137 | { |
| 138 | byte[] data = new byte[] {0, 1, 2, 3, 4, 5, 6}; |
| 139 | ByteString bs = ByteString.CopyFrom(data, 2, 3); |
| 140 | Assert.AreEqual(3, bs.Length); |
| 141 | Assert.AreEqual(2, bs[0]); |
| 142 | Assert.AreEqual(3, bs[1]); |
| 143 | } |
| 144 | |
| 145 | [Test] |
| 146 | public void ToStringUtf8() |
| 147 | { |
| 148 | ByteString bs = ByteString.CopyFromUtf8("\u20ac"); |
| 149 | Assert.AreEqual("\u20ac", bs.ToStringUtf8()); |
| 150 | } |
| 151 | |
| 152 | [Test] |
| 153 | public void ToStringWithExplicitEncoding() |
| 154 | { |
| 155 | ByteString bs = ByteString.CopyFrom("\u20ac", Encoding.Unicode); |
| 156 | Assert.AreEqual("\u20ac", bs.ToString(Encoding.Unicode)); |
| 157 | } |
| 158 | |
| 159 | [Test] |
| 160 | public void FromBase64_WithText() |
| 161 | { |
| 162 | byte[] data = new byte[] {0, 1, 2, 3, 4, 5, 6}; |
| 163 | string base64 = Convert.ToBase64String(data); |
| 164 | ByteString bs = ByteString.FromBase64(base64); |
| 165 | Assert.AreEqual(data, bs.ToByteArray()); |
| 166 | } |
| 167 | |
| 168 | [Test] |
| 169 | public void FromBase64_Empty() |
| 170 | { |
| 171 | // Optimization which also fixes issue 61. |
| 172 | Assert.AreSame(ByteString.Empty, ByteString.FromBase64("")); |
| 173 | } |
| 174 | |
| 175 | [Test] |
| 176 | public void FromStream_Seekable() |
| 177 | { |
| 178 | var stream = new MemoryStream(new byte[] { 1, 2, 3, 4, 5 }); |
| 179 | // Consume the first byte, just to test that it's "from current position" |
| 180 | stream.ReadByte(); |
| 181 | var actual = ByteString.FromStream(stream); |
| 182 | ByteString expected = ByteString.CopyFrom(2, 3, 4, 5); |
| 183 | Assert.AreEqual(expected, actual, $"{expected.ToBase64()} != {actual.ToBase64()}"); |
| 184 | } |
| 185 | |
| 186 | [Test] |
| 187 | public void FromStream_NotSeekable() |
| 188 | { |
| 189 | var stream = new MemoryStream(new byte[] { 1, 2, 3, 4, 5 }); |
| 190 | // Consume the first byte, just to test that it's "from current position" |
| 191 | stream.ReadByte(); |
| 192 | // Wrap the original stream in LimitedInputStream, which has CanSeek=false |
| 193 | var limitedStream = new LimitedInputStream(stream, 3); |
| 194 | var actual = ByteString.FromStream(limitedStream); |
| 195 | ByteString expected = ByteString.CopyFrom(2, 3, 4); |
| 196 | Assert.AreEqual(expected, actual, $"{expected.ToBase64()} != {actual.ToBase64()}"); |
| 197 | } |
| 198 | |
| 199 | #if !NET35 |
| 200 | [Test] |
| 201 | public async Task FromStreamAsync_Seekable() |
| 202 | { |
| 203 | var stream = new MemoryStream(new byte[] { 1, 2, 3, 4, 5 }); |
| 204 | // Consume the first byte, just to test that it's "from current position" |
| 205 | stream.ReadByte(); |
| 206 | var actual = await ByteString.FromStreamAsync(stream); |
| 207 | ByteString expected = ByteString.CopyFrom(2, 3, 4, 5); |
| 208 | Assert.AreEqual(expected, actual, $"{expected.ToBase64()} != {actual.ToBase64()}"); |
| 209 | } |
| 210 | |
| 211 | [Test] |
| 212 | public async Task FromStreamAsync_NotSeekable() |
| 213 | { |
| 214 | var stream = new MemoryStream(new byte[] { 1, 2, 3, 4, 5 }); |
| 215 | // Consume the first byte, just to test that it's "from current position" |
| 216 | stream.ReadByte(); |
| 217 | // Wrap the original stream in LimitedInputStream, which has CanSeek=false |
| 218 | var limitedStream = new LimitedInputStream(stream, 3); |
| 219 | var actual = await ByteString.FromStreamAsync(limitedStream); |
| 220 | ByteString expected = ByteString.CopyFrom(2, 3, 4); |
| 221 | Assert.AreEqual(expected, actual, $"{expected.ToBase64()} != {actual.ToBase64()}"); |
| 222 | } |
| 223 | #endif |
| 224 | |
| 225 | [Test] |
| 226 | public void GetHashCode_Regression() |
| 227 | { |
| 228 | // We used to have an awful hash algorithm where only the last four |
| 229 | // bytes were relevant. This is a regression test for |
| 230 | // https://github.com/google/protobuf/issues/2511 |
| 231 | |
| 232 | ByteString b1 = ByteString.CopyFrom(100, 1, 2, 3, 4); |
| 233 | ByteString b2 = ByteString.CopyFrom(200, 1, 2, 3, 4); |
| 234 | Assert.AreNotEqual(b1.GetHashCode(), b2.GetHashCode()); |
| 235 | } |
| 236 | } |
Jakob Buchgraber | 2b49f67 | 2017-04-26 15:37:42 +0200 | [diff] [blame] | 237 | } |