![]() ![]() If an assembly has already been instrumented or optimized by another profiling tool, the assembly is omitted from the code coverage analysis. An instrumented or optimized binary is usedĭetermine if the binary has undergone any form of advanced optimization such as Profile Guided Optimization, or has been instrumented by a profiling tool such as vsinstr.exe or vsperfmon.exe. For more information, see Customize code coverage analysis. It's also possible to configure code coverage engine to search for. exe files are in different places, copy the. Open the project properties and verify that Linker > Debugging > Generate Debug Info is set to Generate Debug Information optimized for sharing and publishing (/DEBUG:FULL). NET 5+, open the project properties, select the Build tab, choose General, and inspect Debug symbols.įor C++ projects, ensure that the generated. In Visual Studio 2022 and later versions, for C# projects targeting. pdb files aren't updated when the project is built, then open the project properties, select the Build page, choose Advanced, and inspect Debug Info. Make sure that your build settings generate the. pdb file must be generated from the same build as the. pdb file for a particular assembly, the assembly isn't analyzed. The code coverage engine requires that every assembly has its associated. ![]() Open the compile target folder (typically bin\debug), and verify that for each assembly, there's a. Make sure that you have selected the most recent result set in the Code Coverage Results window.When you modify and rerun your tests, a previous code coverage result can still be visible, including the code coloring from that old run. Fix any failures before using Analyze Code Coverage. In Test Explorer, select Run All to verify that the tests run successfully. If none of the tests are executed, there's nothing for code coverage to report. It only includes assemblies that are loaded into memory when the tests run. See if there are any warnings or errors logged.Ĭode coverage analysis is done while tests are running. In the Show Output from drop-down list, choose Tests. No tests were executedĬheck your output window. Possible reasons for seeing no results or old results You're not using the right edition of Visual Studio You might have to expand the items to see the detail.įor more information, see Use code coverage to determine how much code is being tested. If you choose an Analyze Code Coverage command on the Test menu, and if the build and tests run successfully, then you should see a list of results in the Code Coverage window. This article helps you troubleshoot and resolve the various reasons why you may be encountering empty results. However, in some cases, the Code Coverage Results window displays an error similar to "Empty results generated. The code coverage analysis tool in Visual Studio collects data for native and managed assemblies (. ![]()
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