| // 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. |
| |
| #include "third_party/blink/renderer/platform/scheduler/common/tracing_helper.h" |
| |
| #include <unordered_set> |
| |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| namespace blink { |
| namespace scheduler { |
| |
| namespace { |
| |
| const char* g_last_state = nullptr; |
| |
| void ExpectTraced(const char* state) { |
| EXPECT_TRUE(state); |
| EXPECT_TRUE(g_last_state); |
| EXPECT_STREQ(state, g_last_state); |
| g_last_state = nullptr; |
| } |
| |
| void ExpectNotTraced() { |
| EXPECT_FALSE(g_last_state); |
| } |
| |
| const char* SignOfInt(int value) { |
| if (value > 0) |
| return "positive"; |
| if (value < 0) |
| return "negative"; |
| return "zero"; |
| } |
| |
| class TraceableStateForTest |
| : public TraceableState<int, kTracingCategoryNameDefault> { |
| public: |
| TraceableStateForTest(TraceableVariableController* controller) |
| : TraceableState(0, "State", controller, controller, SignOfInt) { |
| // We shouldn't expect trace in constructor here because mock isn't set yet. |
| mock_trace_for_test_ = &MockTrace; |
| } |
| |
| TraceableStateForTest& operator=(const int& value) { |
| Assign(value); |
| return *this; |
| } |
| |
| static void MockTrace(const char* state) { |
| EXPECT_TRUE(state); |
| EXPECT_FALSE(g_last_state); // No unexpected traces. |
| g_last_state = state; |
| } |
| }; |
| |
| } // namespace |
| |
| // TODO(kraynov): TraceableCounter tests. |
| |
| TEST(TracingHelperTest, TraceableState) { |
| TraceableVariableController controller; |
| TraceableStateForTest state(&controller); |
| controller.OnTraceLogEnabled(); |
| ExpectTraced("zero"); |
| state = 0; |
| ExpectNotTraced(); |
| state = 1; |
| ExpectTraced("positive"); |
| state = -1; |
| ExpectTraced("negative"); |
| } |
| |
| TEST(TracingHelperTest, TraceableStateOperators) { |
| TraceableVariableController controller; |
| TraceableState<int, kTracingCategoryNameDebug> x(-1, "X", &controller, |
| &controller, SignOfInt); |
| TraceableState<int, kTracingCategoryNameDebug> y(1, "Y", &controller, |
| &controller, SignOfInt); |
| EXPECT_EQ(0, x + y); |
| EXPECT_FALSE(x == y); |
| EXPECT_TRUE(x != y); |
| x = 1; |
| EXPECT_EQ(0, y - x); |
| EXPECT_EQ(2, x + y); |
| EXPECT_EQ(x, y); |
| EXPECT_FALSE(x != y); |
| EXPECT_NE(x + y, 3); |
| EXPECT_EQ(2 - y + 1 + x, 3); |
| x = 3; |
| y = 2; |
| int z = x = y; |
| EXPECT_EQ(2, z); |
| } |
| |
| } // namespace scheduler |
| } // namespace blink |