Enhance scan error handling and add tests for scan functionality

[hahwul]

Improve error handling during the scan process and implement tests to validate scan functionality and error scenarios.

[gemini-code-assist]

Hello @hahwul, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

Summary of Changes

This pull request enhances the scan functionality by improving error handling and adding tests. Specifically, it modifies the ScanFromAPI function in pkg/server/scan.go to log errors when a scan fails and adds tests to pkg/server/server_test.go to validate the scan functionality and error scenarios. Additionally, it updates the codecov.yml file to ignore the pkg/server/docs/docs.go file.

Highlights

• Error Handling: The ScanFromAPI function now logs errors if the scan fails, providing better visibility into scan issues.
• Testing: Added comprehensive tests for scan functionality, including successful scans and error scenarios, to ensure the reliability of the scan process.
• Code Coverage: The codecov.yml file is updated to exclude pkg/server/docs/docs.go from code coverage analysis.

Changelog

• codecov.yml
  • Added pkg/server/docs/docs.go to the ignore list to exclude it from code coverage reports.
• pkg/server/scan.go
  • Modified ScanFromAPI to capture and log errors returned by the scan.Scan function.
  • Added a log message to indicate successful scan completion.
• pkg/server/server_test.go
  • Added tests for postScanHandler to verify the handler's response.
  • Added tests for GetScan and GetScans to validate the retrieval of scan information.
  • Added tests for ScanFromAPI to test both successful and error scenarios during the scan process.

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[gemini-code-assist]

Code Review

The pull request enhances error handling in the scan process and adds tests to validate scan functionality and error scenarios. The changes look good overall, but there are a few areas that could be improved for clarity and robustness.

Summary of Findings

• Missing assertions in tests: The Test_ScanFromAPI function includes test runs for both successful and error scenarios, but lacks assertions to verify the outcomes. Adding assertions would ensure that the tests accurately validate the expected behavior.
• Inconsistent response in scansHandler: The scansHandler function returns http.StatusNotFound (404) with a response containing the list of scans. This is semantically incorrect, as 404 indicates that the resource was not found. It should return http.StatusOK (200) to indicate a successful request.

Merge Readiness

The pull request introduces important improvements to error handling and testing. However, the missing assertions in Test_ScanFromAPI and the incorrect HTTP status code in scansHandler should be addressed before merging. I am unable to approve this pull request, and recommend that another reviewer also take a look at this code before merging. At a minimum, the high severity issues should be addressed before merging.

[gemini-code-assist]

Add assertions to verify the scan was successful. For example, check if the scan ID is added to the scans list or if the scan results are as expected.

// Add assertions to verify the scan was successful
// Example:
// assert.Contains(t, scans, sid)

[gemini-code-assist]

Add assertions to verify error handling. For example, check if an error is logged or if the scan ID is not added to the scans list.

// Add assertions to verify error handling
// Example:
// assert.NotContains(t, scans, sid)

[codecov]

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