test: Remove test tmp folder after all tests are finished

jest.config.js

@@ -40,6 +40,7 @@ module.exports = {
   ],
   testEnvironment: 'node',
   globalSetup: '<rootDir>/test/util/SetupTests.ts',
+  globalTeardown: '<rootDir>/test/util/TeardownTests.ts',
   setupFilesAfterEnv: [ 'jest-rdf' ],
   collectCoverage: false,
   // See https://github.com/matthieubosquet/ts-dpop/issues/13

test/util/TeardownTests.ts

@@ -0,0 +1,7 @@
+import { getTestFolder, removeFolder } from '../integration/Config';
+
+// Jest global teardown requires a single function to be exported
+export default async function(): Promise<void> {
+  // Clean up the root test folder
+  await removeFolder(getTestFolder(''));
+}