MBL-1338: Re-fetch stored cards after login

Library/ViewModels/PostCampaignCheckoutViewModel.swift

@@ -159,15 +159,18 @@ public class PostCampaignCheckoutViewModel: PostCampaignCheckoutViewModelType,
     // MARK: - Validate Existing Cards
 
     /// Capture current users stored credit cards in the case that we need to validate an existing payment method
-    let storedCardsEvent = initialData.ignoreValues()
-      .switchMap { _ in
-        AppEnvironment.current.apiService
-          .fetchGraphUser(withStoredCards: true)
-          .ksr_debounce(.seconds(1), on: AppEnvironment.current.scheduler)
-          .map { envelope in (envelope, false) }
-          .prefix(value: (nil, true))
-          .materialize()
-      }
+    let storedCardsEvent = Signal.merge(
+      initialData.ignoreValues(),
+      self.userSessionStartedSignal.ignoreValues()
+    )
+    .switchMap { _ in
+      AppEnvironment.current.apiService
+        .fetchGraphUser(withStoredCards: true)
+        .ksr_debounce(.seconds(1), on: AppEnvironment.current.scheduler)
+        .map { envelope in (envelope, false) }
+        .prefix(value: (nil, true))
+        .materialize()
+    }
 
     let storedCardsValues = storedCardsEvent.values()
       .filter(second >>> isFalse)

Library/ViewModels/PostCampaignCheckoutViewModelTests.swift

@@ -804,4 +804,59 @@ final class PostCampaignCheckoutViewModelTests: TestCase {
       self.configurePledgeViewCTAContainerViewContext.assertValues([.latePledge])
     }
   }
+
+  func testTapSubmitButton_SignedInAfterPageLoads_canValidateExistingCard() {
+    let paymentIntent = PaymentIntentEnvelope(clientSecret: "foo")
+    let validateCheckout = ValidateCheckoutEnvelope(valid: true, messages: ["message"])
+    let fetchedUser = GraphUser.template
+
+    withEnvironment(currentUser: nil) {
+      let project = Project.cosmicSurgery
+      let reward = Reward.noReward |> Reward.lens.minimum .~ 5
+
+      let data = PostCampaignCheckoutData(
+        project: project,
+        baseReward: reward,
+        rewards: [reward],
+        selectedQuantities: [:],
+        bonusAmount: 0,
+        total: 5,
+        shipping: nil,
+        refTag: nil,
+        context: .latePledge,
+        checkoutId: "0"
+      )
+
+      self.vm.inputs.configure(with: data)
+      self.vm.inputs.viewDidLoad()
+
+      self.configurePledgeViewCTAContainerViewIsLoggedIn.assertLastValue(false)
+
+      withEnvironment(
+        apiService: MockService(
+          createPaymentIntentResult: .success(paymentIntent),
+          fetchGraphUserResult: .success(UserEnvelope(me: fetchedUser)),
+          validateCheckoutResult: .success(validateCheckout)
+        ),
+        currentUser: .template
+      ) {
+        self.vm.inputs.userSessionStarted()
+        self.configurePledgeViewCTAContainerViewIsLoggedIn.assertLastValue(true)
+
+        self.vm.inputs.creditCardSelected(
+          source: .savedCreditCard(UserCreditCards.amex.id),
+          paymentMethodId: UserCreditCards.amex.id,
+          isNewPaymentMethod: false
+        )
+
+        self.scheduler.run()
+
+        self.vm.inputs.submitButtonTapped()
+
+        self.scheduler.run()
+
+        self.validateCheckoutSuccess.assertDidEmitValue()
+      }
+    }
+  }
 }