refactor: adding test setup

Author: anandtiwary

jest.config.js

@@ -0,0 +1,34 @@
+process.env.TZ = "UTC"; // Tests should always run in UTC, no time zone dependencies
+
+module.exports = {
+  rootDir: ".",
+  globals: {
+    "ts-jest": {
+      tsconfig: "<rootDir>/tsconfig.spec.json",
+      stringifyContentPathRegex: "\\.html$",
+    },
+  },
+  reporters: [
+    "default",
+    [
+      "jest-junit",
+      {
+        outputDirectory: "test-results/traceable-ui",
+      },
+    ],
+    [
+      "jest-html-reporter",
+      {
+        outputPath: "test-results/traceable-ui/test-report.html",
+      },
+    ],
+  ],
+  watchPathIgnorePatterns: ["test-results"],
+  collectCoverageFrom: ["src/**/*.ts", "projects/*/src/**/*.ts", "!**/*.d.ts"],
+  coverageDirectory: "coverage/your-app-name",
+  modulePathIgnorePatterns: ["<rootDir>/dist/"], // Need to reset from app project, but empty is merged
+  testMatch: ["<rootDir>/(src|projects)/**/+(*.)+(spec|test).ts"],
+  moduleNameMapper: {
+    "@org/your-library-name": "<rootDir>/dist/your-library-name",
+  },
+};

package-lock.json

@@ -39,6 +39,8 @@
     "jest-config": "^26.6.3",
     "jest-html-reporter": "^3.3.0",
     "jest-junit": "^12.0.0",
+    "@types/jest": "^26.0.4",
+    "ts-jest": "^26.5.3",
     "path": "^0.12.7",
     "prettier": "^2.2.1",
     "pretty-quick": "^3.1.0",
@@ -47,7 +49,6 @@
     "rollup-plugin-scss": "^2.6.1",
     "semantic-release": "^17.4.2",
     "style-loader": "^2.0.0",
-    "ts-jest": "^26.5.3",
     "ts-loader": "^8.0.18",
     "tsconfig-paths-webpack-plugin": "^3.5.1",
     "tslib": "^2.1.0",

package.json

@@ -0,0 +1,16 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "outDir": "./out-tsc/spec",
+    "types": ["jest", "webpack-env"],
+    "module": "commonjs"
+  },
+  "include": [
+    "src/**/*.spec.ts",
+    "src/**/*.test.ts",
+    "src/**/*.d.ts",
+    "projects/**/*.d.ts",
+    "projects/**/*.spec.ts",
+    "projects/**/*.test.ts"
+  ]
+}