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- // Copyright 2019 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.
- #include "ash/keyboard/ui/keyboard_ui_model.h"
- #include "base/test/metrics/histogram_tester.h"
- #include "testing/gtest/include/gtest/gtest.h"
- namespace keyboard {
- TEST(KeyboardUIModelTest, ChangeToValidStateRecordsPositiveHistogram) {
- base::HistogramTester histogram_tester;
- KeyboardUIModel model;
- ASSERT_EQ(KeyboardUIState::kInitial, model.state());
- model.ChangeState(KeyboardUIState::kLoading);
- histogram_tester.ExpectUniqueSample(
- "VirtualKeyboard.ControllerStateTransition",
- GetStateTransitionHash(KeyboardUIState::kInitial,
- KeyboardUIState::kLoading),
- 1);
- }
- // Test fails DCHECK when the state transition is invalid. This is expected.
- #if !DCHECK_IS_ON()
- TEST(KeyboardUIModelTest, ChangeToInvalidStateRecordsNegativeHistogram) {
- base::HistogramTester histogram_tester;
- KeyboardUIModel model;
- ASSERT_EQ(KeyboardUIState::kInitial, model.state());
- model.ChangeState(KeyboardUIState::kShown);
- histogram_tester.ExpectUniqueSample(
- "VirtualKeyboard.ControllerStateTransition",
- -GetStateTransitionHash(KeyboardUIState::kInitial,
- KeyboardUIState::kShown),
- 1);
- }
- #endif
- } // namespace keyboard
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