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Large CC XML error #1428

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Jan 2, 2023
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Large CC XML error #1428

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30 changes: 30 additions & 0 deletions Documentation/KnownIssues.md
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Expand Up @@ -201,3 +201,33 @@ NB. Workaround doesn't work if test method itself explicitly creates an appdomai
SUT (System Under Test) assembly is also not listed in MSBuild logs - "Instrumented module" is missing for your dll.

*Solution*: Check whether deterministic build is turned on for your solution, if so, follow the [instructions](DeterministicBuild.md) on how to handle deterministic builds.

## Failure to produce Code Coverage Report

*Symptoms:*

```log
C:\Users\REDACTED\.nuget\packages\coverlet.msbuild\3.2.0\build\coverlet.msbuild.targets(39,5): error : Stream was too long. [REDACTED.csproj]
C:\Users\REDACTED\.nuget\packages\coverlet.msbuild\3.2.0\build\coverlet.msbuild.targets(39,5): error : at System.IO.MemoryStream.Write(Byte[] buffer, Int32 offset, Int32 count) [REDACTED.csproj]
C:\Users\REDACTED\.nuget\packages\coverlet.msbuild\3.2.0\build\coverlet.msbuild.targets(39,5): error : at System.Xml.XmlStreamNodeWriter.FlushBuffer() [REDACTED.csproj]
C:\Users\REDACTED\.nuget\packages\coverlet.msbuild\3.2.0\build\coverlet.msbuild.targets(39,5): error : at System.Xml.XmlStreamNodeWriter.GetBuffer(Int32 count, Int32& offset) [REDACTED.csproj]
C:\Users\REDACTED\.nuget\packages\coverlet.msbuild\3.2.0\build\coverlet.msbuild.targets(39,5): error : at System.Xml.XmlStreamNodeWriter.UnsafeWriteUTF8Chars(Char* chars, Int32 charCount) [REDACTED.csproj]
C:\Users\REDACTED\.nuget\packages\coverlet.msbuild\3.2.0\build\coverlet.msbuild.targets(39,5): error : at System.Xml.XmlUTF8NodeWriter.WriteEscapedText(String s) [REDACTED.csproj]
C:\Users\REDACTED\.nuget\packages\coverlet.msbuild\3.2.0\build\coverlet.msbuild.targets(39,5): error : at System.Xml.XmlBaseWriter.WriteString(String value) [REDACTED.csproj]
C:\Users\REDACTED\.nuget\packages\coverlet.msbuild\3.2.0\build\coverlet.msbuild.targets(39,5): error : at System.Runtime.Serialization.XmlObjectSerializerWriteContext.WriteString(XmlWriterDelegator xmlWriter, String value, XmlDictionaryString name, XmlDictionaryString ns) [REDACTED.csproj]
C:\Users\REDACTED\.nuget\packages\coverlet.msbuild\3.2.0\build\coverlet.msbuild.targets(39,5): error : at WriteLineToXml(XmlWriterDelegator , Object , XmlObjectSerializerWriteContext , ClassDataContract ) [REDACTED.csproj]

....

Calculating coverage result...
C:\Users\REDACTED\.nuget\packages\coverlet.msbuild\3.2.0\build\coverlet.msbuild.targets(71,5): error : Unexpected end of file. [REDACTED.csproj]
C:\Users\REDACTED\.nuget\packages\coverlet.msbuild\3.2.0\build\coverlet.msbuild.targets(71,5): error : at System.Xml.EncodingStreamWrapper.ReadBOMEncoding(Boolean notOutOfBand) [REDACTED.csproj]
C:\Users\REDACTED\.nuget\packages\coverlet.msbuild\3.2.0\build\coverlet.msbuild.targets(71,5): error : at System.Xml.EncodingStreamWrapper..ctor(Stream stream, Encoding encoding) [REDACTED.csproj]
C:\Users\REDACTED\.nuget\packages\coverlet.msbuild\3.2.0\build\coverlet.msbuild.targets(71,5): error : at System.Xml.XmlUTF8TextReader.SetInput(Stream stream, Encoding encoding, XmlDictionaryReaderQuotas quotas, OnXmlDictionaryReaderClose onClose) [REDACTED.csproj]
```

The XML code coverage report is too large for the coverlet to parse.

*Potential Solutions:*
* Reduce noise from auto generated code, for example excluding your EntityFrameworkCore Migrations namespace or automatically generated typed Http Clients. See [Excluding From Coverage](./MSBuildIntegration.md#excluding-from-coverage) for more information on ignoring namespaces from code coverage.