[Payment Request] Selector view controller

ios/showcase/payments/sc_payments_selector_egtest.mm

Index: ios/showcase/payments/sc_payments_selector_egtest.mm
diff --git a/ios/showcase/payments/sc_payments_selector_egtest.mm b/ios/showcase/payments/sc_payments_selector_egtest.mm
new file mode 100644
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+++ b/ios/showcase/payments/sc_payments_selector_egtest.mm
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+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import <EarlGrey/EarlGrey.h>
+
+#import "ios/chrome/browser/payments/payment_request_selector_view_controller.h"
+#import "ios/chrome/test/earl_grey/chrome_matchers.h"
+#import "ios/showcase/test/showcase_eg_utils.h"
+#import "ios/showcase/test/showcase_test_case.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+namespace {
+using ::showcase_utils::Open;
+using ::showcase_utils::Close;
+using ::chrome_test_util::ButtonWithAccessibilityLabel;
+
+// Returns the GREYMatcher for the header item.
+id<GREYMatcher> HeaderItem() {
+  return grey_allOf(grey_accessibilityLabel(@"Header item"),
+                    grey_kindOfClass([UILabel class]),
+                    grey_sufficientlyVisible(), nil);
+}
+
+// Returns the GREYMatcher for the selectable item with the given label.
+// |selected| states whether or not the item must be selected.
+id<GREYMatcher> SelectableItemWithLabel(NSString* label, BOOL selected) {
+  id<GREYMatcher> matcher = grey_allOf(ButtonWithAccessibilityLabel(label),
+                                       grey_sufficientlyVisible(), nil);
+  if (selected) {
+    return grey_allOf(
+        matcher, grey_accessibilityTrait(UIAccessibilityTraitSelected), nil);
+  }
+  return matcher;
+}
+
+// Returns the GREYMatcher for the add button.
+id<GREYMatcher> AddButton() {
+  return grey_allOf(ButtonWithAccessibilityLabel(@"Add an item"),
+                    grey_sufficientlyVisible(), nil);
+}
+
+}  // namespace
+
+// Tests for the payment request selector view controller.
+@interface SCPaymentsSelectorTestCase : ShowcaseTestCase
+@end
+
+@implementation SCPaymentsSelectorTestCase
+
+- (void)setUp {
+  [super setUp];
+  Open(@"PaymentRequestSelectorViewController");
+}
+
+- (void)tearDown {
+  Close();
+  [super tearDown];
+}
+
+// Tests if all the expected items are present and that none is selected.
+- (void)testVerifyItems {
+  [[EarlGrey selectElementWithMatcher:HeaderItem()]
+      assertWithMatcher:grey_notNil()];
+
+  [[EarlGrey selectElementWithMatcher:SelectableItemWithLabel(
+                                          @"First selectable item", NO)]
+      assertWithMatcher:grey_notNil()];
+  [[EarlGrey selectElementWithMatcher:SelectableItemWithLabel(
+                                          @"Second selectable item", NO)]
+      assertWithMatcher:grey_notNil()];
+  [[EarlGrey selectElementWithMatcher:SelectableItemWithLabel(
+                                          @"Third selectable item", NO)]
+      assertWithMatcher:grey_notNil()];
+  [[EarlGrey selectElementWithMatcher:SelectableItemWithLabel(
+                                          @"Fourth selectable item", NO)]
+      assertWithMatcher:grey_notNil()];
+
+  [[EarlGrey selectElementWithMatcher:AddButton()]
+      assertWithMatcher:grey_notNil()];
+}
+
+// Tests that selectable items can be selected.
+- (void)testCanSelectItems {
+  // Tap the first selectable item which is currently not selected.
+  [[EarlGrey selectElementWithMatcher:SelectableItemWithLabel(
+                                          @"First selectable item", NO)]
+      performAction:grey_tap()];
+
+  // Confirm the delegate is informed.
+  [[EarlGrey selectElementWithMatcher:grey_accessibilityLabel(
+                                          @"protocol_alerter_done")]
+      performAction:grey_tap()];
+
+  // Confirm the first selectable item is now selected. Tap it again.
+  [[EarlGrey selectElementWithMatcher:SelectableItemWithLabel(
+                                          @"First selectable item", YES)]
+      performAction:grey_tap()];
+
+  // Confirm the delegate is informed.
+  [[EarlGrey selectElementWithMatcher:grey_accessibilityLabel(
+                                          @"protocol_alerter_done")]
+      performAction:grey_tap()];
+
+  // Confirm the first selectable item is still selected.
+  [[EarlGrey selectElementWithMatcher:SelectableItemWithLabel(
+                                          @"First selectable item", YES)]
+      assertWithMatcher:grey_notNil()];
+
+  // Tap the second selectable item which is currently not selected.
+  [[EarlGrey selectElementWithMatcher:SelectableItemWithLabel(
+                                          @"Second selectable item", NO)]
+      performAction:grey_tap()];
+
+  // Confirm the delegate is informed.
+  [[EarlGrey selectElementWithMatcher:grey_accessibilityLabel(
+                                          @"protocol_alerter_done")]
+      performAction:grey_tap()];
+
+  // Confirm the second selectable item is now selected.
+  [[EarlGrey selectElementWithMatcher:SelectableItemWithLabel(
+                                          @"Second selectable item", YES)]
+      assertWithMatcher:grey_notNil()];
+}
+
+// Tests that item can be added.
+- (void)testCanAddItem {
+  // Tap the add button.
+  [[EarlGrey selectElementWithMatcher:AddButton()] performAction:grey_tap()];
+
+  // Confirm the delegate is informed.
+  [[EarlGrey selectElementWithMatcher:grey_accessibilityLabel(
+                                          @"protocol_alerter_done")]
+      performAction:grey_tap()];
+}
+
+@end