Review code coverage results

Azure Pipelines | Azure DevOps Server 2019 | TFS 2018 | TFS 2017 | TFS 2015

Code coverage helps you determine the proportion of your project's code that is actually being tested by tests such as unit tests. To increase your confidence of the code changes, and guard effectively against bugs, your tests should exercise - or cover - a large proportion of your code.

Reviewing the code coverage result helps to identify code path(s) that are not covered by the tests. This information is important to improve the test collateral over time by reducing the test debt.

Note

In Microsoft Team Foundation Server (TFS) 2018 and previous versions, run and release pipelines are called definitions, runs are called builds, service connections are called service endpoints, stages are called environments, and jobs are called phases.

Example

To view an example of publishing code coverage results for your choice of language, see the Ecosystems section of the Pipelines topics. For example, collect and publish code coverage for JavaScript using Istanbul.

View results

The code coverage summary can be viewed in the build timeline view. The summary shows the overall percentage of line coverage.

View code coverage results

Note

Merging code coverage results from multiple test runs is limited to .NET and .NET Core at present. This will be supported for other formats in a future release.

Artifacts

The code coverage artifacts published during the build can be viewed under the Build artifacts published milestone in the timeline view.

View code coverage artifact

  • If you use the Visual Studio Test task to collect coverage for .NET and .NET Core apps, the artifact contains .coverage files that can be downloaded and used for further analysis in Visual Studio.

    View .coverage reports

  • If you publish code coverage using Cobertura or JaCoCo coverage formats, the code coverage artifact contains an HTML file that can be viewed offline for further analysis.

    View html reports

Note

For .NET and .NET Core, the link to download the artifact is available by choosing the code coverage milestone in the build summary.

Tasks

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