e4622aaecc
The methodology used to generate this CL is documented in https://crbug.com/1098010#c34. An earlier version of this CL, https://crrev.com/c/3879904, was reverted due to an issue that was resolved with https://crrev.com/c/3881211. No-Try: true Bug: 1098010 Change-Id: Ibd6ffb97e66835bc299fe7b85876c3e2927b2345 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3883841 Auto-Submit: Avi Drissman <avi@chromium.org> Owners-Override: Avi Drissman <avi@chromium.org> Reviewed-by: Mark Mentovai <mark@chromium.org> Commit-Queue: Mark Mentovai <mark@chromium.org> Cr-Commit-Position: refs/heads/main@{#1044747}
101 lines
3.8 KiB
C++
101 lines
3.8 KiB
C++
// Copyright 2020 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/state_transitions.h"
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#include <ostream>
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#include <string>
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#include "base/test/gtest_util.h"
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#include "build/build_config.h"
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#include "testing/gmock/include/gmock/gmock.h"
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#include "testing/gtest/include/gtest/gtest.h"
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namespace base {
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enum class State { kState1 = 0, kState2, kState3, kState4 };
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std::ostream& operator<<(std::ostream& o, const State& s) {
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return o << static_cast<int>(s);
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}
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TEST(StateTransitionsTest, Constructor) {
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// No expectations, just make sure the constructor works.
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const StateTransitions<State> transitions({
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{State::kState1, {State::kState2, State::kState3}},
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{State::kState2, {State::kState3, State::kState4}},
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});
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}
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TEST(StateTransitionsTest, GetValidTransitions) {
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const StateTransitions<State> transitions({
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{State::kState1, {State::kState2, State::kState3}},
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{State::kState2, {State::kState3, State::kState4}},
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});
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EXPECT_THAT(transitions.GetValidTransitions(State::kState1),
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testing::ElementsAre(State::kState2, State::kState3));
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EXPECT_THAT(transitions.GetValidTransitions(State::kState2),
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testing::ElementsAre(State::kState3, State::kState4));
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EXPECT_THAT(transitions.GetValidTransitions(State::kState3),
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testing::ElementsAre());
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EXPECT_THAT(transitions.GetValidTransitions(State::kState4),
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testing::ElementsAre());
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}
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TEST(StateTransitionsTest, IsTransitionValid) {
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const StateTransitions<State> transitions({
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{State::kState1, {State::kState2, State::kState3}},
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{State::kState2, {State::kState3, State::kState4}},
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});
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ASSERT_TRUE(transitions.IsTransitionValid(State::kState1, State::kState2));
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ASSERT_TRUE(transitions.IsTransitionValid(State::kState2, State::kState3));
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ASSERT_FALSE(transitions.IsTransitionValid(State::kState1, State::kState4));
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// kState3 was omitted from the definition.
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ASSERT_FALSE(transitions.IsTransitionValid(State::kState3, State::kState4));
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}
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TEST(StateTransitionsTest, DCHECK_STATE_TRANSITION) {
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const StateTransitions<State> transitions({
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{State::kState1, {State::kState2, State::kState3}},
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{State::kState2, {State::kState3, State::kState4}},
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});
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DCHECK_STATE_TRANSITION(&transitions, State::kState1, State::kState2);
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DCHECK_STATE_TRANSITION(&transitions, State::kState2, State::kState3);
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#if DCHECK_IS_ON()
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// EXPECT_DEATH is not defined on IOS.
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#if !BUILDFLAG(IS_IOS)
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EXPECT_DEATH(
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DCHECK_STATE_TRANSITION(&transitions, State::kState1, State::kState4),
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"Check failed.*Invalid transition: 0 -> 3");
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// kState3 was omitted from the definition.
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EXPECT_DEATH(
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DCHECK_STATE_TRANSITION(&transitions, State::kState3, State::kState4),
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"Check failed.*Invalid transition: 2 -> 3");
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#endif // !BUILDFLAG(IS_IOS)
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#endif // DCHECK_IS_ON()
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}
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// Test that everything works OK with some other data type.
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TEST(StateTransitionsTest, NonEnum) {
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const StateTransitions<std::string> transitions({
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{"state1", {"state2", "state3"}},
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{"state2", {"state3", "state4"}},
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});
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ASSERT_TRUE(transitions.IsTransitionValid("state1", "state2"));
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ASSERT_TRUE(transitions.IsTransitionValid("state2", "state3"));
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ASSERT_FALSE(transitions.IsTransitionValid("state1", "state4"));
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// kState3 was omitted from the definition.
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ASSERT_FALSE(transitions.IsTransitionValid("state3", "state4"));
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DCHECK_STATE_TRANSITION(&transitions, "state1", "state2");
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DCHECK_STATE_TRANSITION(&transitions, "state2", "state3");
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// Try some states that are not in the specification at all.
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ASSERT_FALSE(transitions.IsTransitionValid("foo", "state2"));
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ASSERT_FALSE(transitions.IsTransitionValid("state1", "foo"));
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ASSERT_FALSE(transitions.IsTransitionValid("foo", "bar"));
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}
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} // namespace base
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