diff --git a/jest.config.js b/jest.config.js
index f6153f8a..ef8c050a 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -1,97 +1,7 @@
 module.exports = {
     clearMocks: true,
     coverageDirectory: "coverage",
-
-    // An array of regexp pattern strings used to skip coverage collection
-    coveragePathIgnorePatterns: [
-        "node_modules"
-    ],
-
-    // An array of directory names to be searched recursively up from the requiring module's location
-    // moduleDirectories: [
-    //   "node_modules"
-    // ],
-
-    // An array of regexp pattern strings, matched against all module paths before considered 'visible' to the module loader
-    // modulePathIgnorePatterns: [],
-
-    // Reset the module registry before running each individual test
-    // resetModules: false,
-
-    // A path to a custom resolver
-    // resolver: null,
-
-    // The root directory that Jest should scan for tests and modules within
-    //rootDir: "tests",
-
-    // A list of paths to directories that Jest should use to search for files in
-    // roots: [
-    //   "<rootDir>"
-    // ],
-
-    // The paths to modules that run some code to configure or set up the testing environment before each test
-    // setupFiles: [],
-
-    // A list of paths to modules that run some code to configure or set up the testing framework before each test
-    // setupFilesAfterEnv: [],
-
-    // A list of paths to snapshot serializer modules Jest should use for snapshot testing
-    // snapshotSerializers: [],
-
-    // The test environment that will be used for testing
-    testEnvironment: "node",
-
-    // Options that will be passed to the testEnvironment
-    // testEnvironmentOptions: {},
-
-    // Adds a location field to test results
-    // testLocationInResults: false,
-
-    // The glob patterns Jest uses to detect test files
-    // testMatch: [
-    //   "**/__tests__/**/*.[jt]s?(x)",
-    //   "**/?(*.)+(spec|test).[tj]s?(x)"
-    // ],
-
-    // An array of regexp pattern strings that are matched against all test paths, matched tests are skipped
-    testPathIgnorePatterns: [
-        "node_modules"
-    ],
-
-    // The regexp pattern or array of patterns that Jest uses to detect test files
-    testRegex: [
-        "\\.test\\.js$"
-    ],
-
-    // This option allows the use of a custom results processor
-    // testResultsProcessor: null,
-
-    // This option allows use of a custom test runner
-    // testRunner: "jasmine2",
-
-    // This option sets the URL for the jsdom environment. It is reflected in properties such as location.href
-    // testURL: "http://localhost",
-
-    // Setting this value to "fake" allows the use of fake timers for functions such as "setTimeout"
-    // timers: "real",
-
-    // A map from regular expressions to paths to transformers
-    // transform: null,
-
-    // An array of regexp pattern strings that are matched against all source file paths, matched files will skip transformation
-    // transformIgnorePatterns: [
-    //   "\\\\node_modules\\\\"
-    // ],
-
-    // An array of regexp pattern strings that are matched against all modules before the module loader will automatically return a mock for them
-    // unmockedModulePathPatterns: undefined,
-
-    // Indicates whether each individual test should be reported during the run
-    verbose: true,
-
-    // An array of regexp patterns that are matched against all source file paths before re-running tests in watch mode
-    // watchPathIgnorePatterns: [],
-
-    // Whether to use watchman for file crawling
-    // watchman: true,
+    collectCoverage: true,
+    coverageProvider: "v8",
+    testEnvironment: "jsdom",
 };
diff --git a/package.json b/package.json
index c2b1603e..499ba1e5 100644
--- a/package.json
+++ b/package.json
@@ -13,9 +13,9 @@
     "build": "rollup -c",
     "webgl": "rollup -c --environment entry:webgl",
     "core": "rollup -c --environment entry:core",
-    "test": "jest --coverage",
+    "test": "jest --env=jsdom",
     "lint": "eslint src/og",
-    "generate_types": "tsc src/**/*.js --declaration --allowJs --emitDeclarationOnly --outDir node_modules/@types/openglobus__og",
+    "generate_types": "rm -rf node_modules/@types/openglobus__og; tsc src/**/*.js --declaration --allowJs --emitDeclarationOnly --outDir node_modules/@types/openglobus__og",
     "prepare": "husky install"
   },
   "repository": {
@@ -52,7 +52,7 @@
     "eslint-plugin-standard": "^4.1.0",
     "husky": "^6.0.0",
     "jaguarjs-jsdoc": "^1.1.0",
-    "jest": "^26.6.3",
+    "jest": "^27.2.3",
     "jsdoc": "^3.6.7",
     "lint-staged": "^11.0.0",
     "local-web-server": "^5.1.1",
diff --git a/tests/classes.test.js b/tests/classes.test.js
new file mode 100644
index 00000000..d18407f8
--- /dev/null
+++ b/tests/classes.test.js
@@ -0,0 +1,22 @@
+import { Planet } from '../src/og/scene/Planet.js';
+import { SegmentLonLat } from '../src/og/segment/SegmentLonLat.js';
+import { Worker } from './worker';
+
+window.Worker = Worker;
+global.URL.createObjectURL = jest.fn(() => '');
+
+const mockPlanet = () => {
+    const planet = new Planet();
+    planet.renderer = {};
+    planet.terrain = { gridSizeByZoom: {} };
+    return planet;
+}
+
+const mockExtent = () => {
+    return { southWest: { forwardMercatorEPS01: () => { } }, northEast: { forwardMercatorEPS01: () => { } } };
+}
+
+test('Testing SegmentLonLat', () => {
+    const segmentLonLat = new SegmentLonLat({}, mockPlanet(), {}, mockExtent());
+    expect(segmentLonLat).toBeTruthy();
+});
\ No newline at end of file
diff --git a/tests/test.test.js b/tests/test.test.js
deleted file mode 100644
index 4f37fef1..00000000
--- a/tests/test.test.js
+++ /dev/null
@@ -1,5 +0,0 @@
-'use strict';
-
-test('Waiting for tests', () => {
-    expect(true).toBe(true);
-});
\ No newline at end of file
diff --git a/tests/worker.js b/tests/worker.js
new file mode 100644
index 00000000..b731423d
--- /dev/null
+++ b/tests/worker.js
@@ -0,0 +1,14 @@
+export class Worker {
+  constructor(stringUrl) {
+    this.url = stringUrl;
+    this.onmessage = () => { };
+  }
+
+  postMessage(msg) {
+    this.onmessage(msg);
+  }
+}
+
+export class URL {
+  createObjectURL(tmp) { return '' }
+}
\ No newline at end of file