test(layout): optimized the unit tests for the layout component (#749)

* test(divider): merged test cases for the divider component and optimized

Merged the original two test files into one, removed duplicates, and optimized the format.

fix #697

* test(divider): standardize divider test cases

standardize Divider test cases

fix #697

* test(divider): removed some unnecessary snapshots

- Align, layout, dashed assertions: no snapshot storage (verify CSS classes).

fix #697

* test(layout): optimized the unit tests for the layout component

- Merged multiple test files and optimized the test cases

fix #697

Author: ImaginingMaker

site/test-coverage.js

@@ -29,7 +29,7 @@ module.exports = {
   imageViewer: { statements: '8.47%', branches: '2.87%', functions: '0%', lines: '8.84%' },
   indexes: { statements: '95.65%', branches: '69.81%', functions: '100%', lines: '96.94%' },
   input: { statements: '3.57%', branches: '0%', functions: '0%', lines: '3.7%' },
-  layout: { statements: '93.93%', branches: '60%', functions: '100%', lines: '93.93%' },
+  layout: { statements: '100%', branches: '100%', functions: '100%', lines: '100%' },
   link: { statements: '100%', branches: '100%', functions: '100%', lines: '100%' },
   list: { statements: '8%', branches: '0%', functions: '0%', lines: '8.69%' },
   loading: { statements: '98.43%', branches: '96.07%', functions: '100%', lines: '98.3%' },