Go, the programming language created by Google, presents challenges in accurately reporting code coverage across multiple packages due to its default testing behavior, which only records coverage for the package currently under test. This article highlights the issue encountered when writing integration tests, where despite extensive testing, the perceived code coverage remains low. The problem stems from the default Go testing tool that doesn't collect coverage data from code outside the current package, leading to an incomplete coverage report. To address this, the article suggests using the Go flag -coverpkg to specify additional packages for coverage analysis, although it acknowledges limitations when trying to combine the coverage reports from multiple packages using the -coverprofile flag. The recommended solution involves employing the go-acc tool, which simplifies the process by merging coverage data across packages, providing a comprehensive overview of test coverage. The article provides a step-by-step explanation and examples of using go-acc to achieve accurate coverage reports, emphasizing its compatibility across operating systems and its ability to integrate with existing toolchains.