Add unit test for detecting HAS_GOOGLE_PAYMENTS_ACCOUNT

Bug: 789645
Change-Id: I6c07392942a49c7ce20ece83cdd5284310377559
Reviewed-on: https://chromium-review.googlesource.com/953969
Commit-Queue: Sebastien Seguin-Gagnon <sebsg@chromium.org>
Reviewed-by: Sebastien Seguin-Gagnon <sebsg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#541656}

components/autofill/core/browser/credit_card_save_manager_unittest.cc

@@ -3105,6 +3105,35 @@ TEST_F(CreditCardSaveManagerTest, GetDetectedValues_DetectCountryCode) {
             CreditCardSaveManager::DetectedValue::COUNTRY_CODE);
 }
 
+TEST_F(CreditCardSaveManagerTest,
+       GetDetectedValues_DetectHasGooglePaymentAccount) {
+  EnableAutofillUpstreamSendDetectedValuesExperiment();
+  personal_data_.ClearProfiles();
+  credit_card_save_manager_->SetCreditCardUploadEnabled(true);
+
+  // Set the billing_customer_number Priority Preference to designate existence
+  // of a Payments account.
+  autofill_client_.GetPrefs()->SetDouble(prefs::kAutofillBillingCustomerNumber,
+                                         12345);
+
+  // Set up our credit card form data.
+  FormData credit_card_form;
+  CreateTestCreditCardFormData(&credit_card_form, true, false);
+  FormsSeen(std::vector<FormData>(1, credit_card_form));
+
+  // Edit the data, and submit.
+  credit_card_form.fields[0].value = ASCIIToUTF16("");  // No name set
+  credit_card_form.fields[1].value = ASCIIToUTF16("4111111111111111");
+  credit_card_form.fields[2].value = ASCIIToUTF16("11");
+  credit_card_form.fields[3].value = ASCIIToUTF16(NextYear());
+  credit_card_form.fields[4].value = ASCIIToUTF16("");  // No CVC set
+
+  // Submit the form and check what detected_values for an upload save would be.
+  FormSubmitted(credit_card_form);
+  EXPECT_EQ(payments_client_->GetDetectedValuesSetInRequest(),
+            CreditCardSaveManager::DetectedValue::HAS_GOOGLE_PAYMENTS_ACCOUNT);
+}
+
 TEST_F(CreditCardSaveManagerTest, GetDetectedValues_DetectEverythingAtOnce) {
   EnableAutofillUpstreamSendDetectedValuesExperiment();
   personal_data_.ClearProfiles();