refactor: move backend to monorepo

backend/test/notification/backend-transport.spec.ts

@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2020 StApps
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+import {SMTP} from '@openstapps/logger/lib/smtp';
+import {Transport} from '@openstapps/logger/lib/transport';
+import {expect} from 'chai';
+import mockedEnv from 'mocked-env';
+import {BackendTransport, isTransportWithVerification} from '../../src/notification/backend-transport';
+import sinon from 'sinon';
+
+describe('Backend transport', function () {
+  describe('isTransportWithVerification', function () {
+    it('should return false if transport is not verifiable', function () {
+      expect(isTransportWithVerification({} as Transport)).to.be.false;
+      expect(isTransportWithVerification({verify: 'foo'} as unknown as Transport)).to.be.false;
+    });
+
+    it('should return true if transport is verifiable', function () {
+      // a transport which has verify function should be verifiable
+      // eslint-disable-next-line @typescript-eslint/no-empty-function
+      expect(isTransportWithVerification({verify: () => {}} as unknown as Transport)).to.be.true;
+    });
+  });
+
+  describe('BackendTransport', async function () {
+    const sandbox = sinon.createSandbox();
+
+    afterEach(function () {
+      BackendTransport.destroy();
+      sandbox.restore();
+    });
+
+    it('should provide only one instance of the transport', function () {
+      // @ts-expect-error not assignable
+      sandbox.stub(SMTP, 'getInstance').callsFake(() => {
+        return {};
+      });
+      const transport1 = BackendTransport.getTransportInstance();
+      const transport2 = BackendTransport.getTransportInstance();
+      expect(transport1).to.be.equal(transport2);
+    });
+
+    it('should not throw in case of error getting SMTP instance when transport not allowed', function () {
+      sandbox.stub(SMTP, 'getInstance').throws('Foo Error');
+      const restore = mockedEnv({
+        ALLOW_NO_TRANSPORT: 'true',
+      });
+
+      expect(() => BackendTransport.getTransportInstance()).to.not.throw();
+
+      // restore env variables
+      restore();
+    });
+
+    it('should throw in case of error getting SMTP instance when transport is allowed', function () {
+      sandbox.stub(SMTP, 'getInstance').throws('Foo Error');
+      const restore = mockedEnv({
+        ALLOW_NO_TRANSPORT: undefined,
+      });
+
+      expect(() => BackendTransport.getTransportInstance()).to.throw();
+
+      // restore env variables
+      restore();
+    });
+
+    it('should provide information that the transport if waiting for its verification', function () {
+      // @ts-expect-error not assignable
+      sandbox.stub(SMTP, 'getInstance').callsFake(() => {
+        return {verify: () => Promise.resolve(true)};
+      });
+
+      expect(BackendTransport.getInstance().isWaitingForVerification()).to.be.true;
+    });
+
+    it('should provide information that the transport if not waiting for its verification after the verification is over', function () {
+      sinon.stub(SMTP.prototype, 'verify').resolves(true);
+
+      expect(BackendTransport.getInstance().isWaitingForVerification()).to.be.false;
+    });
+  });
+});