Add DOM tests for variant analysis header

Author: koesie10

extensions/ql-vscode/.eslintrc.js

@@ -10,7 +10,7 @@ module.exports = {
     node: true,
     es6: true,
   },
-  extends: ["eslint:recommended", "plugin:@typescript-eslint/recommended"],
+  extends: ["eslint:recommended", "plugin:@typescript-eslint/recommended", "plugin:jest-dom/recommended"],
   rules: {
     "@typescript-eslint/no-use-before-define": 0,
     "@typescript-eslint/no-unused-vars": [

extensions/ql-vscode/jest.config.ts

@@ -14,7 +14,7 @@ export default {
   // cacheDirectory: "/private/var/folders/6m/1394pht172qgd7dmw1fwjk100000gn/T/jest_dx",
 
   // Automatically clear mock calls, instances, contexts and results before every test
-  clearMocks: true,
+  // clearMocks: true,
 
   // Indicates whether the coverage information should be collected while executing the test
   // collectCoverage: false,
@@ -134,10 +134,10 @@ export default {
   // runner: "jest-runner",
 
   // The paths to modules that run some code to configure or set up the testing environment before each test
-  setupFiles: ['<rootDir>/test/jest.setup.ts'],
+  // setupFiles: [],
 
   // A list of paths to modules that run some code to configure or set up the testing framework before each test
-  // setupFilesAfterEnv: [],
+  setupFilesAfterEnv: ['<rootDir>/test/jest.setup.ts'],
 
   // The number of seconds after which a test is considered as slow and reported as such in the results.
   // slowTestThreshold: 5,

extensions/ql-vscode/package-lock.json

@@ -1250,6 +1250,7 @@
     "@storybook/manager-webpack5": "^6.5.10",
     "@storybook/react": "^6.5.10",
     "@storybook/testing-library": "^0.0.13",
+    "@testing-library/jest-dom": "^5.16.5",
     "@testing-library/react": "^12.1.5",
     "@types/chai": "^4.1.7",
     "@types/chai-as-promised": "~7.1.2",
@@ -1297,6 +1298,7 @@
     "css-loader": "~3.1.0",
     "del": "^6.0.0",
     "eslint": "~6.8.0",
+    "eslint-plugin-jest-dom": "^4.0.2",
     "eslint-plugin-react": "~7.19.0",
     "eslint-plugin-storybook": "^0.6.4",
     "file-loader": "^6.2.0",