test(SegmentationService): Adding 98.63% of test line coverage to Segmentation Service through unit tests (#5421)

extensions/cornerstone/jest.config.js

@@ -1,9 +1,13 @@
 const base = require('../../jest.config.base.js');
-const pkg = require('./package');
 
 module.exports = {
   ...base,
-  displayName: pkg.name,
+  moduleNameMapper: {
+    ...base.moduleNameMapper,
+    '@ohif/(.*)': '<rootDir>/../../platform/$1/src',
+    '^@cornerstonejs/([^/]+)/(.*)$': '<rootDir>/../../node_modules/@cornerstonejs/$1/dist/esm/$2',
+    '^@cornerstonejs/([^/]+)$': '<rootDir>/../../node_modules/@cornerstonejs/$1/dist/esm',
+  },
   // rootDir: "../.."
   // testMatch: [
   //   //`<rootDir>/platform/${pack.name}/**/*.spec.js`