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Code Coverage

Improving Software Quality with Code Coverage in CppDepend

CppDepend integrates code coverage data to help you identify untested code, measure test effectiveness, and improve overall software quality. This section explains how to configure and import coverage data from various sources.

Which coverage technology is supported by CppDepend?
How to get XML Coverage Files from Microsoft Visual Studio?
How to get XML Coverage Files from CTC++?
How to provide a list of coverage files to parse?
How to import coverage data into analysis results?

Supported Coverage Technologies

CppDepend can import coverage data from:

Bullseye coverage files
Cobertura
Visual Studio Team System
CTC++

XML Coverage Files from Visual Studio

Visual Studio has 2 coverage file formats.

A binary format where file extension is .coverage. This is the format you'll get from testing from Visual Studio. Alternatively you can also use the tool VSPerfMon.exe to get a .coverage file. For that you then need to instrument each project to cover with the tool VSInstr.exe used with the /Coverage option.
A XML format (with file extension .coveragexml since VS 2010, and .xml for previous versions)

CppDepend only consumes the XML format. You can manually export XML coverage files from binary coverage files from Visual Studio with this option:

See the code snippet below, it takes 3 lines of code to programmatically transform a binary coverage file into a xml coverage file.

For that you'll need to reference from your project the assembly Microsoft.VisualStudio.Coverage.Analysis.dll:
- A x86 version of this DLL can be found under C:\Program Files (x86)\Microsoft Visual Studio XX.0\Common7\IDE\PrivateAssemblies
- A x64 version of this DLL can be found on x64 server where TFS is installed under C:\Program Files\Microsoft Team Foundation Server XX.0\Application Tier\TFSJobAgent\Plugins
Both System.Data and System.Data.DataSetExtensions will have to be referenced as well.
And if you want your code to be independent from any VS or TFS install, you'll need to deploy as well Microsoft.VisualStudio.Coverage.Interop.dll that is used by Microsoft.VisualStudio.Coverage.Analysis.dll.

using Microsoft.VisualStudio.Coverage.Analysis;

...

var pathInBinary = @"C:\Dir\File.coverage";

var pathOutXml = @"C:\Dir\File.coveragexml";

var coverageInfo = CoverageInfo.CreateFromFile(pathInBinary);

var data = coverageInfo.BuildDataSet();

data.WriteXml(pathOutXml);