When we write a single character to a JSON output, make sure we actually have

an output before flushing.

Fixes issue 64.

2 files changed, 41 insertions, 0 deletions

diff --git a/src/ProtocolBuffers.Serialization/JsonFormatWriter.cs b/src/ProtocolBuffers.Serialization/JsonFormatWriter.cs
index 1c71dc95..15e0424e 100644
--- a/src/ProtocolBuffers.Serialization/JsonFormatWriter.cs
+++ b/src/ProtocolBuffers.Serialization/JsonFormatWriter.cs
@@ -82,6 +82,10 @@ namespace Google.ProtocolBuffers.Serialization
             {

                 if (_bufferPos >= _buffer.Length)

                 {

+                    if (_output == null)

+                    {

+                        _output = new StringWriter(new StringBuilder(_buffer.Length * 2));

+                    }

                     Flush();

                 }

                 _buffer[_bufferPos++] = ch;

diff --git a/src/ProtocolBuffers.Test/TestWriterFormatJson.cs b/src/ProtocolBuffers.Test/TestWriterFormatJson.cs
index 86a3e300..b658086c 100644
--- a/src/ProtocolBuffers.Test/TestWriterFormatJson.cs
+++ b/src/ProtocolBuffers.Test/TestWriterFormatJson.cs
@@ -1,9 +1,11 @@
 using System;

 using System.IO;

 using System.Text;

+using Google.ProtocolBuffers.DescriptorProtos;

 using Google.ProtocolBuffers.Serialization;

 using Microsoft.VisualStudio.TestTools.UnitTesting;

 using Google.ProtocolBuffers.TestProtos;

+using EnumOptions = Google.ProtocolBuffers.TestProtos.EnumOptions;

 

 namespace Google.ProtocolBuffers

 {

@@ -152,6 +154,7 @@ namespace Google.ProtocolBuffers
                 @"{}"

                 );

         }

+        

         [TestMethod]

         public void TestRepeatedField()

         {

@@ -163,6 +166,7 @@ namespace Google.ProtocolBuffers
                 @"{""options"":[""ONE"",""TWO""]}"

                 );

         }

+        

         [TestMethod]

         public void TestNestedEmptyMessage()

         {

@@ -173,6 +177,7 @@ namespace Google.ProtocolBuffers
                 @"{""child"":{}}"

                 );

         }

+        

         [TestMethod]

         public void TestNestedMessage()

         {

@@ -183,6 +188,7 @@ namespace Google.ProtocolBuffers
                 @"{""child"":{""options"":[""TWO""]}}"

                 );

         }

+        

         [TestMethod]

         public void TestBooleanTypes()

         {

@@ -193,6 +199,7 @@ namespace Google.ProtocolBuffers
                 @"{""valid"":true}"

                 );

         }

+        

         [TestMethod]

         public void TestFullMessage()

         {

@@ -222,6 +229,7 @@ namespace Google.ProtocolBuffers
                 0x1010101010L.ToString()

                 );

         }

+        

         [TestMethod]

         public void TestMessageWithXmlText()

         {

@@ -232,6 +240,7 @@ namespace Google.ProtocolBuffers
                 @"{""text"":""<text><\/text>""}"

                 );

         }

+        

         [TestMethod]

         public void TestWithEscapeChars()

         {

@@ -242,6 +251,7 @@ namespace Google.ProtocolBuffers
                 "{\"text\":\" \\t <- \\\"leading space and trailing\\\" -> \\\\ \\uef54 \\u0000 \\u00ff \\uffff \\b \\f \\r \\n \\t \"}"

                 );

         }

+        

         [TestMethod]

         public void TestWithExtensionText()

         {

@@ -253,6 +263,7 @@ namespace Google.ProtocolBuffers
                 @"{""valid"":false,""extension_text"":"" extension text value ! ""}"

                 );

         }

+        

         [TestMethod]

         public void TestWithExtensionNumber()

         {

@@ -264,6 +275,7 @@ namespace Google.ProtocolBuffers
                 @"{""number"":42}"

                 );

         }

+        

         [TestMethod]

         public void TestWithExtensionArray()

         {

@@ -276,6 +288,7 @@ namespace Google.ProtocolBuffers
                 @"{""extension_number"":[100,101,102]}"

                 );

         }

+        

         [TestMethod]

         public void TestWithExtensionEnum()

         {

@@ -286,6 +299,7 @@ namespace Google.ProtocolBuffers
                 @"{""extension_enum"":""ONE""}"

                 );

         }

+        

         [TestMethod]

         public void TestMessageWithExtensions()

         {

@@ -308,6 +322,7 @@ namespace Google.ProtocolBuffers
                 @"""extension_message"":{""number"":42}"

                 );

         }

+        

         [TestMethod]

         public void TestMessageMissingExtensions()

         {

@@ -340,6 +355,7 @@ namespace Google.ProtocolBuffers
             Assert.AreNotEqual(original, copy);

             Assert.AreEqual(message, copy);

         }

+        

         [TestMethod]

         public void TestMergeFields()

         {

@@ -350,6 +366,7 @@ namespace Google.ProtocolBuffers
             Assert.AreEqual("text", builder.Text);

             Assert.AreEqual(411, builder.Number);

         }

+        

         [TestMethod]

         public void TestMessageArray()

         {

@@ -374,6 +391,7 @@ namespace Google.ProtocolBuffers
             Assert.AreEqual(3, ordinal);

             Assert.AreEqual(3, builder.TextlinesCount);

         }

+        

         [TestMethod]

         public void TestNestedMessageArray()

         {

@@ -403,6 +421,7 @@ namespace Google.ProtocolBuffers
             Assert.AreEqual(3, ordinal);

             Assert.AreEqual(3, builder.TextlinesCount);

         }

+        

         [TestMethod]

         public void TestReadWriteJsonWithoutRoot()

         {

@@ -425,6 +444,7 @@ namespace Google.ProtocolBuffers
 

             Assert.AreEqual(message, copy);

         }

+        

         [TestMethod,ExpectedException(typeof(RecursionLimitExceededException))]

         public void TestRecursiveLimit()

         {

@@ -433,29 +453,46 @@ namespace Google.ProtocolBuffers
                 sb.Append("{\"child\":");

             TestXmlRescursive msg = Extensions.MergeFromJson(new TestXmlRescursive.Builder(), sb.ToString()).Build();

         }

+

         [TestMethod, ExpectedException(typeof(FormatException))]

         public void FailWithEmptyText()

         {

             JsonFormatReader.CreateInstance("")

                 .Merge(TestXmlMessage.CreateBuilder());

         }

+        

         [TestMethod, ExpectedException(typeof(FormatException))]

         public void FailWithUnexpectedValue()

         {

             JsonFormatReader.CreateInstance("{{}}")

                 .Merge(TestXmlMessage.CreateBuilder());

         }

+        

         [TestMethod, ExpectedException(typeof(FormatException))]

         public void FailWithUnQuotedName()

         {

             JsonFormatReader.CreateInstance("{name:{}}")

                 .Merge(TestXmlMessage.CreateBuilder());

         }

+        

         [TestMethod, ExpectedException(typeof(FormatException))]

         public void FailWithUnexpectedType()

         {

             JsonFormatReader.CreateInstance("{\"valid\":{}}")

                 .Merge(TestXmlMessage.CreateBuilder());

         }

+

+        // See issue 64 for background.

+        [TestMethod]

+        public void ToJsonRequiringBufferExpansion()

+        {

+            string s = new string('.', 4086);

+            var opts = FileDescriptorProto.CreateBuilder()

+               .SetName(s)

+               .SetPackage("package")

+               .BuildPartial();

+

+            Assert.NotNull(opts.ToJson());

+        }

     }

 }