test: Add loader.test.js achieving 100% coverage #5124
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✅ All Jest tests passed! This PR is ready to merge. |
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This PR adds a comprehensive test suite for js/loader.js to ensure stability of the application entry point. CLOSES #5123
Changes:
Added js/tests/loader.test.js using Jest.
Mocked global requirejs, i18next, and DOM environments to isolate testing.
Verified all logic branches including:
Successful configuration and app loading.
Error handling for i18n initialization and language switching.
Content updates across different document.readyState scenarios.
Result: Achieved 100% coverage (Statements, Branches, Functions, and Lines) for loader.js.