First cut at new layout

1 files changed, 239 insertions, 0 deletions

diff --git a/src/ProtocolBuffers.Test/CodedOutputStreamTest.cs b/src/ProtocolBuffers.Test/CodedOutputStreamTest.cs
new file mode 100644
index 00000000..d6a4e672
--- /dev/null
+++ b/src/ProtocolBuffers.Test/CodedOutputStreamTest.cs
@@ -0,0 +1,239 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.
+// http://code.google.com/p/protobuf/
+//
+// 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.
+using System.IO;
+using Google.ProtocolBuffers.TestProtos;
+using NUnit.Framework;
+
+namespace Google.ProtocolBuffers {
+  [TestFixture]
+  public class CodedOutputStreamTest {
+
+    /// <summary>
+    /// Writes the given value using WriteRawVarint32() and WriteRawVarint64() and
+    /// checks that the result matches the given bytes
+    /// </summary>
+    private static void AssertWriteVarint(byte[] data, ulong value) {
+      // Only do 32-bit write if the value fits in 32 bits.
+      if ((value >> 32) == 0) {
+        MemoryStream rawOutput = new MemoryStream();
+        CodedOutputStream output = CodedOutputStream.CreateInstance(rawOutput);
+        output.WriteRawVarint32((uint) value);
+        output.Flush();
+        Assert.AreEqual(data, rawOutput.ToArray());
+        // Also try computing size.
+        Assert.AreEqual(data.Length, CodedOutputStream.ComputeRawVarint32Size((uint) value));
+      }
+
+      {
+        MemoryStream rawOutput = new MemoryStream();
+        CodedOutputStream output = CodedOutputStream.CreateInstance(rawOutput);
+        output.WriteRawVarint64(value);
+        output.Flush();
+        Assert.AreEqual(data, rawOutput.ToArray());
+
+        // Also try computing size.
+        Assert.AreEqual(data.Length, CodedOutputStream.ComputeRawVarint64Size(value));
+      }
+
+      // Try different buffer sizes.
+      for (int bufferSize = 1; bufferSize <= 16; bufferSize *= 2) {
+        // Only do 32-bit write if the value fits in 32 bits.
+        if ((value >> 32) == 0) {
+          MemoryStream rawOutput = new MemoryStream();
+          CodedOutputStream output =
+            CodedOutputStream.CreateInstance(rawOutput, bufferSize);
+          output.WriteRawVarint32((uint) value);
+          output.Flush();
+          Assert.AreEqual(data, rawOutput.ToArray());
+        }
+
+        {
+          MemoryStream rawOutput = new MemoryStream();
+          CodedOutputStream output = CodedOutputStream.CreateInstance(rawOutput, bufferSize);
+          output.WriteRawVarint64(value);
+          output.Flush();
+          Assert.AreEqual(data, rawOutput.ToArray());
+        }
+      }
+    }
+
+    /// <summary>
+    /// Tests WriteRawVarint32() and WriteRawVarint64()
+    /// </summary>
+    [Test]
+    public void WriteVarint() {
+      AssertWriteVarint(new byte[] {0x00}, 0);
+      AssertWriteVarint(new byte[] {0x01}, 1);
+      AssertWriteVarint(new byte[] {0x7f}, 127);
+      // 14882
+      AssertWriteVarint(new byte[] {0xa2, 0x74}, (0x22 << 0) | (0x74 << 7));
+      // 2961488830
+      AssertWriteVarint(new byte[] {0xbe, 0xf7, 0x92, 0x84, 0x0b},
+        (0x3e << 0) | (0x77 << 7) | (0x12 << 14) | (0x04 << 21) |
+        (0x0bL << 28));
+
+      // 64-bit
+      // 7256456126
+      AssertWriteVarint(new byte[] {0xbe, 0xf7, 0x92, 0x84, 0x1b},
+        (0x3e << 0) | (0x77 << 7) | (0x12 << 14) | (0x04 << 21) |
+        (0x1bL << 28));
+      // 41256202580718336
+      AssertWriteVarint(
+        new byte[] {0x80, 0xe6, 0xeb, 0x9c, 0xc3, 0xc9, 0xa4, 0x49},
+        (0x00 << 0) | (0x66 << 7) | (0x6b << 14) | (0x1c << 21) |
+        (0x43UL << 28) | (0x49L << 35) | (0x24UL << 42) | (0x49UL << 49));
+      // 11964378330978735131
+      AssertWriteVarint(
+        new byte[] {0x9b, 0xa8, 0xf9, 0xc2, 0xbb, 0xd6, 0x80, 0x85, 0xa6, 0x01},
+        unchecked((ulong)
+        ((0x1b << 0) | (0x28 << 7) | (0x79 << 14) | (0x42 << 21) |
+        (0x3bL << 28) | (0x56L << 35) | (0x00L << 42) |
+        (0x05L << 49) | (0x26L << 56) | (0x01L << 63))));
+    }
+
+    /// <summary>
+    /// Parses the given bytes using WriteRawLittleEndian32() and checks
+    /// that the result matches the given value.
+    /// </summary>
+    private static void AssertWriteLittleEndian32(byte[] data, uint value) {
+      MemoryStream rawOutput = new MemoryStream();
+      CodedOutputStream output = CodedOutputStream.CreateInstance(rawOutput);
+      output.WriteRawLittleEndian32(value);
+      output.Flush();
+      Assert.AreEqual(data, rawOutput.ToArray());
+
+      // Try different buffer sizes.
+      for (int bufferSize = 1; bufferSize <= 16; bufferSize *= 2) {
+        rawOutput = new MemoryStream();
+        output = CodedOutputStream.CreateInstance(rawOutput, bufferSize);
+        output.WriteRawLittleEndian32(value);
+        output.Flush();
+        Assert.AreEqual(data, rawOutput.ToArray());
+      }
+    }
+
+    /// <summary>
+    /// Parses the given bytes using WriteRawLittleEndian64() and checks
+    /// that the result matches the given value.
+    /// </summary>
+    private static void AssertWriteLittleEndian64(byte[] data, ulong value) {
+      MemoryStream rawOutput = new MemoryStream();
+      CodedOutputStream output = CodedOutputStream.CreateInstance(rawOutput);
+      output.WriteRawLittleEndian64(value);
+      output.Flush();
+      Assert.AreEqual(data, rawOutput.ToArray());
+
+      // Try different block sizes.
+      for (int blockSize = 1; blockSize <= 16; blockSize *= 2) {
+        rawOutput = new MemoryStream();
+        output = CodedOutputStream.CreateInstance(rawOutput, blockSize);
+        output.WriteRawLittleEndian64(value);
+        output.Flush();
+        Assert.AreEqual(data, rawOutput.ToArray());
+      }
+    }
+
+    /// <summary>
+    /// Tests writeRawLittleEndian32() and writeRawLittleEndian64().
+    /// </summary>
+    [Test]
+    public void WriteLittleEndian() {
+      AssertWriteLittleEndian32(new byte[] {0x78, 0x56, 0x34, 0x12}, 0x12345678);
+      AssertWriteLittleEndian32(new byte[] {0xf0, 0xde, 0xbc, 0x9a}, 0x9abcdef0);
+
+      AssertWriteLittleEndian64(
+        new byte[]{0xf0, 0xde, 0xbc, 0x9a, 0x78, 0x56, 0x34, 0x12},
+        0x123456789abcdef0L);
+      AssertWriteLittleEndian64(
+        new byte[]{0x78, 0x56, 0x34, 0x12, 0xf0, 0xde, 0xbc, 0x9a},
+        0x9abcdef012345678UL);
+    }
+
+    [Test]
+    public void WriteWholeMessage() {
+      TestAllTypes message = TestUtil.GetAllSet();
+
+      byte[] rawBytes = message.ToByteArray();
+      TestUtil.AssertEqualBytes(TestUtil.GoldenMessage.ToByteArray(), rawBytes);
+
+      // Try different block sizes.
+      for (int blockSize = 1; blockSize < 256; blockSize *= 2) {
+        MemoryStream rawOutput = new MemoryStream();
+        CodedOutputStream output =
+          CodedOutputStream.CreateInstance(rawOutput, blockSize);
+        message.WriteTo(output);
+        output.Flush();
+        TestUtil.AssertEqualBytes(rawBytes, rawOutput.ToArray());
+      }
+    }
+
+
+    [Test]
+    public void EncodeZigZag32() {
+      Assert.AreEqual(0, CodedOutputStream.EncodeZigZag32( 0));
+      Assert.AreEqual(1, CodedOutputStream.EncodeZigZag32(-1));
+      Assert.AreEqual(2, CodedOutputStream.EncodeZigZag32( 1));
+      Assert.AreEqual(3, CodedOutputStream.EncodeZigZag32(-2));
+      Assert.AreEqual(0x7FFFFFFE, CodedOutputStream.EncodeZigZag32(0x3FFFFFFF));
+      Assert.AreEqual(0x7FFFFFFF, CodedOutputStream.EncodeZigZag32(unchecked((int)0xC0000000)));
+      Assert.AreEqual(0xFFFFFFFE, CodedOutputStream.EncodeZigZag32(0x7FFFFFFF));
+      Assert.AreEqual(0xFFFFFFFF, CodedOutputStream.EncodeZigZag32(unchecked((int)0x80000000)));
+    }
+
+    [Test]
+    public void EncodeZigZag64() {
+      Assert.AreEqual(0, CodedOutputStream.EncodeZigZag64( 0));
+      Assert.AreEqual(1, CodedOutputStream.EncodeZigZag64(-1));
+      Assert.AreEqual(2, CodedOutputStream.EncodeZigZag64( 1));
+      Assert.AreEqual(3, CodedOutputStream.EncodeZigZag64(-2));
+      Assert.AreEqual(0x000000007FFFFFFEL,
+                   CodedOutputStream.EncodeZigZag64(unchecked((long)0x000000003FFFFFFFUL)));
+      Assert.AreEqual(0x000000007FFFFFFFL,
+                   CodedOutputStream.EncodeZigZag64(unchecked((long)0xFFFFFFFFC0000000UL)));
+      Assert.AreEqual(0x00000000FFFFFFFEL,
+                   CodedOutputStream.EncodeZigZag64(unchecked((long)0x000000007FFFFFFFUL)));
+      Assert.AreEqual(0x00000000FFFFFFFFL,
+                   CodedOutputStream.EncodeZigZag64(unchecked((long)0xFFFFFFFF80000000UL)));
+      Assert.AreEqual(0xFFFFFFFFFFFFFFFEL,
+                   CodedOutputStream.EncodeZigZag64(unchecked((long)0x7FFFFFFFFFFFFFFFUL)));
+      Assert.AreEqual(0xFFFFFFFFFFFFFFFFL,
+                   CodedOutputStream.EncodeZigZag64(unchecked((long)0x8000000000000000UL)));
+    }
+
+    [Test]
+    public void RoundTripZigZag32() {
+      // Some easier-to-verify round-trip tests.  The inputs (other than 0, 1, -1)
+      // were chosen semi-randomly via keyboard bashing.
+      Assert.AreEqual(0, CodedInputStream.DecodeZigZag32(CodedOutputStream.EncodeZigZag32(0)));
+      Assert.AreEqual(1, CodedInputStream.DecodeZigZag32(CodedOutputStream.EncodeZigZag32(1)));
+      Assert.AreEqual(-1, CodedInputStream.DecodeZigZag32(CodedOutputStream.EncodeZigZag32(-1)));
+      Assert.AreEqual(14927, CodedInputStream.DecodeZigZag32(CodedOutputStream.EncodeZigZag32(14927)));
+      Assert.AreEqual(-3612, CodedInputStream.DecodeZigZag32(CodedOutputStream.EncodeZigZag32(-3612)));
+    }
+     
+    [Test]
+    public void RoundTripZigZag64() {
+      Assert.AreEqual(0, CodedInputStream.DecodeZigZag64(CodedOutputStream.EncodeZigZag64(0)));
+      Assert.AreEqual(1, CodedInputStream.DecodeZigZag64(CodedOutputStream.EncodeZigZag64(1)));
+      Assert.AreEqual(-1, CodedInputStream.DecodeZigZag64(CodedOutputStream.EncodeZigZag64(-1)));
+      Assert.AreEqual(14927, CodedInputStream.DecodeZigZag64(CodedOutputStream.EncodeZigZag64(14927)));
+      Assert.AreEqual(-3612, CodedInputStream.DecodeZigZag64(CodedOutputStream.EncodeZigZag64(-3612)));
+
+      Assert.AreEqual(856912304801416L, CodedInputStream.DecodeZigZag64(CodedOutputStream.EncodeZigZag64(856912304801416L)));
+      Assert.AreEqual(-75123905439571256L, CodedInputStream.DecodeZigZag64(CodedOutputStream.EncodeZigZag64(-75123905439571256L)));
+    }
+  }
+}