[WebPayments] Disabling done button when form invalid

chrome/browser/ui/views/payments/credit_card_editor_view_controller_browsertest.cc

Index: chrome/browser/ui/views/payments/credit_card_editor_view_controller_browsertest.cc
diff --git a/chrome/browser/ui/views/payments/credit_card_editor_view_controller_browsertest.cc b/chrome/browser/ui/views/payments/credit_card_editor_view_controller_browsertest.cc
index be25d9a84f41ea2cc7900362e118e5f473e484d5..16501b9b74d1d95046c42434ba3434cdf3d7f234 100644
--- a/chrome/browser/ui/views/payments/credit_card_editor_view_controller_browsertest.cc
+++ b/chrome/browser/ui/views/payments/credit_card_editor_view_controller_browsertest.cc
@@ -685,4 +685,45 @@ IN_PROC_BROWSER_TEST_F(PaymentRequestCreditCardEditorTest, EnteringEmptyData) {
   EXPECT_FALSE(textfield->IsValid());
 }
 
+IN_PROC_BROWSER_TEST_F(PaymentRequestCreditCardEditorTest, DoneButtonDisabled) {
+  autofill::TestAutofillClock test_clock;
+  test_clock.SetNow(kJune2017);
+  InvokePaymentRequestUI();
+
+  autofill::AutofillProfile billing_profile(autofill::test::GetFullProfile());
+  AddAutofillProfile(billing_profile);
+
+  OpenCreditCardEditorScreen();
+
+  views::View* save_button = dialog_view()->GetViewByID(
+      static_cast<int>(DialogViewID::EDITOR_SAVE_BUTTON));
+
+  EXPECT_FALSE(save_button->enabled());
+
+  // Set all fields but one:
+  SetEditorTextfieldValue(base::ASCIIToUTF16("Bob Jones"),
+                          autofill::CREDIT_CARD_NAME_FULL);
+  SetEditorTextfieldValue(base::ASCIIToUTF16("4111111111111111"),
+                          autofill::CREDIT_CARD_NUMBER);
+  SetComboboxValue(base::ASCIIToUTF16("05"), autofill::CREDIT_CARD_EXP_MONTH);
+  SetComboboxValue(base::ASCIIToUTF16("2026"),
+                   autofill::CREDIT_CARD_EXP_4_DIGIT_YEAR);
+
+  // Still disabled.
+  EXPECT_FALSE(save_button->enabled());
+
+  // Set the last field.
+  SelectBillingAddress(billing_profile.guid());
+
+  // Should be good to go.
+  EXPECT_TRUE(save_button->enabled());
+
+  // Change a field to something invalid, to make sure it works both ways.
+  SetEditorTextfieldValue(base::ASCIIToUTF16("Ni!"),
+                          autofill::CREDIT_CARD_NUMBER);
+
+  // Back to being disabled.
+  EXPECT_FALSE(save_button->enabled());
+}
+
 }  // namespace payments