[TEST] : low coverage in lib/domains/models

[Ishita-190]

While reviewing the test coverage, I noticed that the following files have relatively low branch and function coverage:

• lib/domains/models/Context.js : 28.16% Statements, 16.66% Branches, 14.28% Functions
• lib/domains/models/Studio.js : 16.8% Statements, 0% Branches, 0% Functions
• lib/domains/models/Preview.js : 16.98% Statements, 0% Branches, 0% Functions
• lib/domains/models/SpecificationFile.js : 17.17% Statements, 0% Branches, 0% Functions

A lot of helper methods and error-handling branches are currently not exercised by the existing test suite:

• Context.js: validation helpers, duplicate/empty context checks, and error paths in methods like loadContext , addContext , removeContext , and setCurrentContext .
• Studio.js: early returns in start(), path validation logic (isValidFilePath), and branches in file read/write helpers.

Improving coverage here would strengthen confidence in edge cases and reduce the risk of regressions.

Steps to Reproduce:

• npx nyc npm test
• npx nyc report --reporter=html
• start coverage/index.html
• In the report, navigate to lib/domains/models
• Navigate to Context.js, Studio.js, Preview.js, SpecificationFile.js

Happy to raise a PR for this if the maintainers approve

[Ishita-190]

@Souvikns @AayushSaini101 @Shurtu-gal please take a look at this