123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100 |
- // Copyright (c) 2020 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 "base/state_transitions.h"
- #include <ostream>
- #include <string>
- #include "base/test/gtest_util.h"
- #include "build/build_config.h"
- #include "testing/gmock/include/gmock/gmock.h"
- #include "testing/gtest/include/gtest/gtest.h"
- namespace base {
- enum class State { kState1 = 0, kState2, kState3, kState4 };
- std::ostream& operator<<(std::ostream& o, const State& s) {
- return o << static_cast<int>(s);
- }
- TEST(StateTransitionsTest, Constructor) {
- // No expectations, just make sure the constructor works.
- const StateTransitions<State> transitions({
- {State::kState1, {State::kState2, State::kState3}},
- {State::kState2, {State::kState3, State::kState4}},
- });
- }
- TEST(StateTransitionsTest, GetValidTransitions) {
- const StateTransitions<State> transitions({
- {State::kState1, {State::kState2, State::kState3}},
- {State::kState2, {State::kState3, State::kState4}},
- });
- EXPECT_THAT(transitions.GetValidTransitions(State::kState1),
- testing::ElementsAre(State::kState2, State::kState3));
- EXPECT_THAT(transitions.GetValidTransitions(State::kState2),
- testing::ElementsAre(State::kState3, State::kState4));
- EXPECT_THAT(transitions.GetValidTransitions(State::kState3),
- testing::ElementsAre());
- EXPECT_THAT(transitions.GetValidTransitions(State::kState4),
- testing::ElementsAre());
- }
- TEST(StateTransitionsTest, IsTransitionValid) {
- const StateTransitions<State> transitions({
- {State::kState1, {State::kState2, State::kState3}},
- {State::kState2, {State::kState3, State::kState4}},
- });
- ASSERT_TRUE(transitions.IsTransitionValid(State::kState1, State::kState2));
- ASSERT_TRUE(transitions.IsTransitionValid(State::kState2, State::kState3));
- ASSERT_FALSE(transitions.IsTransitionValid(State::kState1, State::kState4));
- // kState3 was omitted from the definition.
- ASSERT_FALSE(transitions.IsTransitionValid(State::kState3, State::kState4));
- }
- TEST(StateTransitionsTest, DCHECK_STATE_TRANSITION) {
- const StateTransitions<State> transitions({
- {State::kState1, {State::kState2, State::kState3}},
- {State::kState2, {State::kState3, State::kState4}},
- });
- DCHECK_STATE_TRANSITION(&transitions, State::kState1, State::kState2);
- DCHECK_STATE_TRANSITION(&transitions, State::kState2, State::kState3);
- #if DCHECK_IS_ON()
- // EXPECT_DEATH is not defined on IOS.
- #if !BUILDFLAG(IS_IOS)
- EXPECT_DEATH(
- DCHECK_STATE_TRANSITION(&transitions, State::kState1, State::kState4),
- "Check failed.*Invalid transition: 0 -> 3");
- // kState3 was omitted from the definition.
- EXPECT_DEATH(
- DCHECK_STATE_TRANSITION(&transitions, State::kState3, State::kState4),
- "Check failed.*Invalid transition: 2 -> 3");
- #endif // !BUILDFLAG(IS_IOS)
- #endif // DCHECK_IS_ON()
- }
- // Test that everything works OK with some other data type.
- TEST(StateTransitionsTest, NonEnum) {
- const StateTransitions<std::string> transitions({
- {"state1", {"state2", "state3"}},
- {"state2", {"state3", "state4"}},
- });
- ASSERT_TRUE(transitions.IsTransitionValid("state1", "state2"));
- ASSERT_TRUE(transitions.IsTransitionValid("state2", "state3"));
- ASSERT_FALSE(transitions.IsTransitionValid("state1", "state4"));
- // kState3 was omitted from the definition.
- ASSERT_FALSE(transitions.IsTransitionValid("state3", "state4"));
- DCHECK_STATE_TRANSITION(&transitions, "state1", "state2");
- DCHECK_STATE_TRANSITION(&transitions, "state2", "state3");
- // Try some states that are not in the specification at all.
- ASSERT_FALSE(transitions.IsTransitionValid("foo", "state2"));
- ASSERT_FALSE(transitions.IsTransitionValid("state1", "foo"));
- ASSERT_FALSE(transitions.IsTransitionValid("foo", "bar"));
- }
- } // namespace base
|