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How Can I Achieve Comprehensive Code Coverage Across Multiple Packages in a Go Project?

Mary-Kate Olsen
Release: 2024-12-25 08:37:10
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How Can I Achieve Comprehensive Code Coverage Across Multiple Packages in a Go Project?

Achieving Comprehensive Code Coverage in Go Projects

In a Go project consisting of multiple packages, obtaining an aggregate code coverage report can be challenging. By default, the go test command with the -cover flag provides coverage information for each package separately.

To gather an overview of coverage across the entire project, you can implement the following solution:

Using a bash script, iterate through each directory within the project. For each directory containing Go files, execute go test with the -covermode=count flag. This command generates a coverage profile (profile.tmp) for each package.

Next, concatenate the profile.tmp files from each package into a single file (profile.cov). This consolidated profile provides a comprehensive view of code coverage across the project.

Finally, utilize the go tool cover command to generate a detailed coverage report from the profile.cov file. This report will include coverage percentages for functions, statements, and the entire codebase.

This approach offers a convenient solution for obtaining a comprehensive overview of code coverage in Go projects.

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