kuberhealthy and outdated plugin unit test added

[anila-intelops]

kuberhealthy and outdated plugin unit test added

[dryrunsecurity]

Hi there 👋, @DryRunSecurity here, below is a summary of our analysis and findings.

DryRun Security	Status	Findings
Configured Codepaths Analyzer	✅	0 findings
Sensitive Files Analyzer	✅	0 findings
Authn/Authz Analyzer	✅	0 findings
AppSec Analyzer	✅	0 findings
Secrets Analyzer	✅	0 findings

Note

🟢 Risk threshold not exceeded.

Change Summary (click to expand)

The following is a summary of changes in this pull request made by me, your security buddy 🤖.
Note that this summary is auto-generated and not meant to be a definitive list of security issues
but rather a helpful summary from a security perspective.

Summary:

The changes in this pull request focus on improving the testability and robustness of various plugins in the Kubviz agent. The code changes involve adding new test cases, mocking dependencies, and ensuring proper error handling and namespace handling. From an application security perspective, these changes are generally positive as they help identify and address potential security vulnerabilities.

The key security-related highlights include:

1. Mocking Dependencies: The use of mocks, such as the MockJetStreamContext, MockResourceInterface, and MockNamespaceableResourceInterface, allows for better control and testing of the functions under different scenarios, including error cases.
2. Error Handling: The code includes test cases that simulate error scenarios, ensuring that the functions handle errors appropriately and do not expose sensitive information or cause unexpected behavior.
3. Namespace Handling: The GetAllResources function in the ketall plugin handles cases where the namespace is empty or not specified, which is an important consideration from a security perspective.
4. Unstructured Data Handling: The code works with unstructured.Unstructured objects, which requires proper handling to avoid potential security issues, such as unexpected data types or malformed resource definitions.

While the changes do not introduce any obvious security vulnerabilities, there are a few areas that could be further reviewed:

1. Container Image Registry Security: The getTagDate function in the outdated plugin uses the ManifestV1 method of the registry.Registry struct to fetch the image manifest, which may be vulnerable to security issues if the underlying library or implementation is not properly secured.
2. JSON Deserialization Vulnerabilities: The code uses the json.Unmarshal function to parse the image manifest data, which could potentially be vulnerable to JSON deserialization vulnerabilities if the input is not properly validated.

Overall, the changes in this pull request demonstrate a proactive approach to improving the testability and robustness of the Kubviz agent, which is a positive step from an application security perspective.

Files Changed:

1. agent/kubviz/plugins/ketall/ketall_test.go: This file includes changes related to adding new test cases and mocking dependencies for the PublishAllResources and GetAllResources functions in the ketall plugin.
2. agent/kubviz/plugins/kuberhealthy/kuberhealthy_test.go: This file includes changes related to testing the StartKuberhealthy, pollAndPublishKuberhealthy, and PublishKuberhealthyMetrics functions in the Kuberhealthy plugin.
3. agent/kubviz/plugins/outdated/outdated_test.go: This file includes a comprehensive test suite for the outdated package, which is responsible for checking the outdated status of container images used in a Kubernetes cluster. The test cases cover various functions and scenarios, including mocking dependencies and handling potential security vulnerabilities.

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