test(utils): add table-driven unit test coverage for pure helper functions in utils/utils.go #4491

Description

Currently, utils/utils_test.go only contains a single test (TestContainerNameFromDockerRun). Several exported pure utility functions in utils/utils.go (such as JSON parsing helpers, IP conversion, and string sanitization utilities) lack dedicated table-driven unit tests.

Adding unit tests for these helper functions will prevent regressions and increase overall test coverage without touching core runtime or proxy logic.

Affected Files

• utils/utils.go
• utils/utils_test.go

Proposed Solution / Acceptance Criteria

1. Add table-driven unit tests using github.com/stretchr/testify/assert or require in utils/utils_test.go.
2. Cover edge cases (e.g., empty strings, malformed inputs, valid/invalid inputs) for:
   • JSON string validation helpers (e.g., IsJSONString, ContainsValidJSON)
   • IP conversion / network formatting helpers
   • Time / timestamp parsing functions
3. Ensure all tests run and pass cleanly via go test ./utils/....

Labels

good first issue, unit-tests, help wanted