Stripe refactor to lib (#8417)

* Moved stripe tests to folder

* Abstracted stripe payments logic to lib

* Added initial unit test for stripe payment

* Added subscription tests

* Added tests for regulare purchases

* Added tests for edit subscription

* Added cancel tests

* Added integration tests

* Fixed lint issues

* Fixed lint issue

test/api/v3/unit/libs/payments.test.js

@@ -817,59 +817,4 @@ describe('payments/index', () => {
       expect(updatedGroup.purchased.plan.quantity).to.eql(3);
     });
   });
-
-  describe('payWithStripe', () => {
-    let spy;
-    let stripeCreateCustomerSpy;
-    let createSubSpy;
-
-    beforeEach(function () {
-      spy = sinon.stub(stripe.subscriptions, 'update');
-      spy.returnsPromise().resolves;
-
-      stripeCreateCustomerSpy = sinon.stub(stripe.customers, 'create');
-      let stripCustomerResponse = {
-        subscriptions: {
-          data: [{id: 'test-id'}],
-        },
-      };
-      stripeCreateCustomerSpy.returnsPromise().resolves(stripCustomerResponse);
-
-      createSubSpy = sinon.stub(api, 'createSubscription');
-      createSubSpy.returnsPromise().resolves({});
-
-      data.groupId = group._id;
-      data.sub.quantity = 3;
-    });
-
-    afterEach(function () {
-      sinon.restore(stripe.subscriptions.update);
-      stripe.customers.create.restore();
-      api.createSubscription.restore();
-    });
-
-    it('subscribes with stripe', async () => {
-      let token = 'test-token';
-      let gift;
-      let sub = data.sub;
-      let groupId = group._id;
-      let email = 'test@test.com';
-      let headers = {};
-      let coupon;
-
-      await api.payWithStripe({
-        token,
-        user,
-        gift,
-        sub,
-        groupId,
-        email,
-        headers,
-        coupon,
-      }, stripe);
-
-      expect(stripeCreateCustomerSpy.calledOnce).to.be.true;
-      expect(createSubSpy.calledOnce).to.be.true;
-    });
-  });
 });