File: payment_request_display_manager_unittest.cc

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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "components/payments/content/payment_request_display_manager.h"

#include "base/memory/weak_ptr.h"
#include "base/test/metrics/histogram_tester.h"
#include "components/payments/content/mock_content_payment_request_delegate.h"
#include "content/public/browser/web_contents.h"
#include "content/public/test/test_renderer_host.h"
#include "content/public/test/web_contents_tester.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace payments {

using PaymentRequestDisplayManagerTest = content::RenderViewHostTestHarness;

TEST_F(PaymentRequestDisplayManagerTest, TryShow_Success) {
  base::HistogramTester histogram_tester;
  PaymentRequestDisplayManager display_manager;
  MockContentPaymentRequestDelegate mock_delegate;

  EXPECT_TRUE(display_manager.TryShow(mock_delegate.GetContentWeakPtr()));
  histogram_tester.ExpectUniqueSample("PaymentRequest.Show.TryShowOutcome",
                                      PaymentRequestTryShowOutcome::kAbleToShow,
                                      /*expected_bucket_count=*/1);
}

TEST_F(PaymentRequestDisplayManagerTest,
       TryShow_ExistingPaymentRequestSameTab) {
  PaymentRequestDisplayManager display_manager;
  std::unique_ptr<content::WebContents> web_contents(CreateTestWebContents());
  MockContentPaymentRequestDelegate mock_delegate;
  EXPECT_CALL(mock_delegate, GetRenderFrameHost)
      .WillRepeatedly(testing::Return(web_contents->GetPrimaryMainFrame()));

  // Set up an ongoing PaymentRequest.
  std::unique_ptr<PaymentRequestDisplayManager::DisplayHandle> existing_handle =
      display_manager.TryShow(mock_delegate.GetContentWeakPtr());
  ASSERT_TRUE(existing_handle);

  // Now trigger another PaymentRequest using the same delegate (and thus the
  // same tab). This should be rejected and have the corresponding histogram
  // sample recorded.
  base::HistogramTester histogram_tester;
  EXPECT_FALSE(display_manager.TryShow(mock_delegate.GetContentWeakPtr()));
  histogram_tester.ExpectUniqueSample(
      "PaymentRequest.Show.TryShowOutcome",
      PaymentRequestTryShowOutcome::kCannotShowExistingPaymentRequestSameTab,
      /*expected_bucket_count=*/1);
}

TEST_F(PaymentRequestDisplayManagerTest,
       TryShow_ExistingPaymentRequestDifferentTab) {
  PaymentRequestDisplayManager display_manager;

  // Set up an ongoing PaymentRequest.
  MockContentPaymentRequestDelegate mock_delegate_1;
  std::unique_ptr<content::WebContents> web_contents_1(CreateTestWebContents());
  EXPECT_CALL(mock_delegate_1, GetRenderFrameHost)
      .WillRepeatedly(testing::Return(web_contents_1->GetPrimaryMainFrame()));
  std::unique_ptr<PaymentRequestDisplayManager::DisplayHandle> existing_handle =
      display_manager.TryShow(mock_delegate_1.GetContentWeakPtr());
  ASSERT_TRUE(existing_handle);

  // Now trigger another PaymentRequest in a different tab. This should be
  // rejected and have the corresponding histogram sample recorded.
  base::HistogramTester histogram_tester;
  MockContentPaymentRequestDelegate mock_delegate_2;
  std::unique_ptr<content::WebContents> web_contents_2(CreateTestWebContents());
  EXPECT_CALL(mock_delegate_2, GetRenderFrameHost)
      .WillRepeatedly(testing::Return(web_contents_2->GetPrimaryMainFrame()));
  EXPECT_FALSE(display_manager.TryShow(mock_delegate_2.GetContentWeakPtr()));
  histogram_tester.ExpectUniqueSample(
      "PaymentRequest.Show.TryShowOutcome",
      PaymentRequestTryShowOutcome::
          kCannotShowExistingPaymentRequestDifferentTab,
      /*expected_bucket_count=*/1);
}

TEST_F(PaymentRequestDisplayManagerTest, TryShow_NullDelegate) {
  PaymentRequestDisplayManager display_manager;

  base::HistogramTester histogram_tester;
  EXPECT_FALSE(display_manager.TryShow(nullptr));
  histogram_tester.ExpectUniqueSample(
      "PaymentRequest.Show.TryShowOutcome",
      PaymentRequestTryShowOutcome::kCannotShowDelegateWasNull,
      /*expected_bucket_count=*/1);
}

TEST_F(PaymentRequestDisplayManagerTest, TryShow_ExistingDelegateBecameNull) {
  PaymentRequestDisplayManager display_manager;

  // Set up an ongoing PaymentRequest.
  auto mock_delegate_1 = std::make_unique<MockContentPaymentRequestDelegate>();
  std::unique_ptr<PaymentRequestDisplayManager::DisplayHandle> existing_handle =
      display_manager.TryShow(mock_delegate_1->GetContentWeakPtr());
  ASSERT_TRUE(existing_handle);

  // Reset the first delegate. This isn't expected to happen in the wild, but
  // the code should be able to handle it.
  mock_delegate_1.reset();

  // Now trigger another PaymentRequest using a new delegate. This should be
  // rejected as there is an existing show() going on, even though the delegate
  // has been cleared. A histogram sample should also be specifically
  // recorded for this situation.
  base::HistogramTester histogram_tester;
  MockContentPaymentRequestDelegate mock_delegate_2;
  EXPECT_FALSE(display_manager.TryShow(mock_delegate_2.GetContentWeakPtr()));
  histogram_tester.ExpectUniqueSample(
      "PaymentRequest.Show.TryShowOutcome",
      PaymentRequestTryShowOutcome::kCannotShowUnknownReason,
      /*expected_bucket_count=*/1);
}

}  // namespace payments