modules/flow/state_machine_test.cpp · cpp-master/cpp-tbox

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cpp-tbox

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flow

state_machine_test.cpp

state_machine_test.cpp 20.90 KB

/*
 * .============.
 * // M A K E / \
 * // C++ DEV / \
 * // E A S Y / \/ \
 * ++ ----------. \/\ .
 * \\ \ \ /\ /
 * \\ \ \ /
 * \\ \ \ /
 * -============'
 *
 * Copyright (c) 2018 Hevake and contributors, all rights reserved.
 *
 * This file is part of cpp-tbox (https://github.com/cpp-main/cpp-tbox)
 * Use of this source code is governed by MIT license that can be found
 * in the LICENSE file in the root of the source tree. All contributing
 * project authors may be found in the CONTRIBUTORS.md file in the root
 * of the source tree.
 */
#include <gtest/gtest.h>

#include <tbox/base/json.hpp>
#include "state_machine.h"

using namespace std;

namespace tbox {
namespace flow {

using SM = StateMachine;

enum StateId {
 STATE_TERM = 0,
 STATE_A,
 STATE_B,
 STATE_C,
 STATE_D,
};

enum EventId {
 EVENT_ANY = 0,
 EVENT_1,
 EVENT_2,
 EVENT_3,
 EVENT_4,
};

//! 测试创建状态
TEST(StateMachine, NewState)
{
 SM sm;
 EXPECT_TRUE (sm.newState(STATE_A, nullptr, nullptr));
 EXPECT_TRUE (sm.newState(STATE_B, nullptr, nullptr));
 EXPECT_FALSE(sm.newState(STATE_A, nullptr, nullptr));
}

//! 测试创建事件
TEST(StateMachine, AddRoute)
{
 SM sm;
 sm.newState(STATE_A, nullptr, nullptr);
 sm.newState(STATE_B, nullptr, nullptr);

EXPECT_TRUE (sm.addRoute(STATE_A, EVENT_1, STATE_B, nullptr, nullptr));
 EXPECT_FALSE(sm.addRoute(STATE_A, EVENT_1, STATE_C, nullptr, nullptr));
 EXPECT_FALSE(sm.addRoute(STATE_C, EVENT_1, STATE_B, nullptr, nullptr));
 EXPECT_FALSE(sm.addRoute(STATE_C, EVENT_1, STATE_D, nullptr, nullptr));
}

//! 测试创建两个状态,一个事件由A到B转换,没有守卫与执行函数
TEST(StateMachine, StateWithoutGuardAndAction)
{
 SM sm;
 sm.newState(STATE_A, nullptr, nullptr);
 sm.newState(STATE_B, nullptr, nullptr);
 sm.addRoute(STATE_A, EVENT_1, STATE_B, nullptr, nullptr);
 sm.setInitState(STATE_A);
 sm.start();

EXPECT_EQ(sm.currentState(), STATE_A);
 EXPECT_TRUE(sm.run(EVENT_1));
 EXPECT_EQ(sm.currentState(), STATE_B);
 EXPECT_FALSE(sm.run(EVENT_2));
}

//! 测试创建两个状态,一个事件由A到B转换,有守卫
TEST(StateMachine, RouteWithGuard)
{
 SM sm;
 sm.newState(STATE_A, nullptr, nullptr);
 sm.newState(STATE_B, nullptr, nullptr);
 sm.newState(STATE_C, nullptr, nullptr);

bool condition = false;
 sm.addRoute(STATE_A, EVENT_1, STATE_B, [&](Event){ return !condition; }, nullptr);
 sm.addRoute(STATE_A, EVENT_1, STATE_C, [&](Event){ return condition; }, nullptr);
 sm.addRoute(STATE_B, EVENT_2, STATE_A, nullptr, nullptr);
 sm.addRoute(STATE_C, EVENT_2, STATE_A, nullptr, nullptr);
 sm.setInitState(STATE_A);
 sm.start();

EXPECT_EQ(sm.currentState(), STATE_A);

condition = false;
 EXPECT_TRUE(sm.run(EVENT_1));
 EXPECT_EQ(sm.currentState(), STATE_B);

EXPECT_TRUE(sm.run(EVENT_2));
 EXPECT_EQ(sm.currentState(), STATE_A);

condition = true;
 EXPECT_TRUE(sm.run(EVENT_1));
 EXPECT_EQ(sm.currentState(), STATE_C);

EXPECT_TRUE(sm.run(EVENT_2));
 EXPECT_EQ(sm.currentState(), STATE_A);
}

//! 测试创建两个状态,一个事件由A到B转换,有进入与退出动作
TEST(StateMachine, StateWithEnterAndExitAction)
{
 SM sm;

int a_enter_counter = 0;
 int a_exit_counter = 0;
 int b_enter_counter = 0;
 int b_exit_counter = 0;

sm.newState(STATE_A, [&](Event){ ++a_enter_counter; }, [&](Event){ ++a_exit_counter; });
 sm.newState(STATE_B, [&](Event){ ++b_enter_counter; }, [&](Event){ ++b_exit_counter; });

sm.addRoute(STATE_A, EVENT_1, STATE_B, nullptr, nullptr);
 sm.addRoute(STATE_B, EVENT_2, STATE_A, nullptr, nullptr);

sm.setInitState(STATE_A);
 EXPECT_EQ(a_enter_counter, 0);
 sm.start();
 EXPECT_EQ(a_enter_counter, 1);

sm.run(EVENT_1);
 EXPECT_EQ(a_exit_counter, 1);
 EXPECT_EQ(b_enter_counter, 1);

sm.run(EVENT_2);
 EXPECT_EQ(b_exit_counter, 1);
 EXPECT_EQ(a_enter_counter, 2);
}

//! 测试创建两个状态,一个事件由A到B转换,事件有转换动作
TEST(StateMachine, EventWithAction)
{
 SM sm;

sm.newState(STATE_A, nullptr, nullptr);
 sm.newState(STATE_B, nullptr, nullptr);

int count_1 = 0;
 int count_2 = 0;

sm.addRoute(STATE_A, EVENT_1, STATE_B, nullptr, [&](Event){ ++count_1; });
 sm.addRoute(STATE_B, EVENT_2, STATE_A, nullptr, [&](Event){ ++count_2; });
 sm.setInitState(STATE_A);
 sm.start();

sm.run(EVENT_1);
 EXPECT_EQ(count_1, 1);

sm.run(EVENT_2);
 EXPECT_EQ(count_2, 1);
}

TEST(StateMachine, AnyEvent)
{
 SM sm;

sm.newState(STATE_A, nullptr, nullptr);
 sm.newState(STATE_B, nullptr, nullptr);

sm.addRoute(STATE_A, 0, STATE_B, nullptr, nullptr);
 sm.addRoute(STATE_B, 0, STATE_A, nullptr, nullptr);
 sm.setInitState(STATE_A);
 sm.start();

sm.run(EVENT_1);
 EXPECT_EQ(sm.currentState(), STATE_B);
 sm.run(EVENT_2);
 EXPECT_EQ(sm.currentState(), STATE_A);
 sm.run(EVENT_3);
 EXPECT_EQ(sm.currentState(), STATE_B);
}

TEST(StateMachine, Restart)
{
 SM sm;

int a_enter_counter = 0;
 int a_exit_counter = 0;
 int b_enter_counter = 0;
 int b_exit_counter = 0;

sm.newState(STATE_A, [&](Event){ ++a_enter_counter; }, [&](Event){ ++a_exit_counter; });
 sm.newState(STATE_B, [&](Event){ ++b_enter_counter; }, [&](Event){ ++b_exit_counter; });

sm.addRoute(STATE_A, EVENT_1, STATE_B, nullptr, nullptr);
 sm.setInitState(STATE_A);
 sm.start();
 EXPECT_EQ(a_enter_counter, 1);
 EXPECT_TRUE(sm.run(EVENT_1));
 EXPECT_EQ(a_exit_counter, 1);
 EXPECT_EQ(b_enter_counter, 1);
 sm.restart();
 EXPECT_EQ(b_exit_counter, 1);
 EXPECT_EQ(a_enter_counter, 2);
 EXPECT_EQ(sm.currentState(), STATE_A);
}

//! 主要测试用 enum class 定义的状态与事件是否能编译过
TEST(StateMachine, EnumClass)
{
 SM sm;
 enum class StateId { k1 = 1, k2 };
 enum class EventId { k1 = 1, k2 };

int enter_counter = 0;
 int exit_counter = 0;

sm.newState(StateId::k1, [&](Event){ ++enter_counter; }, [&](Event){ ++exit_counter; });
 sm.newState(StateId::k2, nullptr, nullptr);

sm.addRoute(StateId::k1, EventId::k1, StateId::k2, nullptr, nullptr);
 sm.addRoute(StateId::k2, EventId::k2, StateId::k1, nullptr, nullptr);
 sm.setInitState(StateId::k1);
 sm.start();
 sm.run(EventId::k1);
 sm.run(EventId::k2);
 sm.stop();

EXPECT_EQ(enter_counter, 2);
 EXPECT_EQ(exit_counter, 2);
}

TEST(StateMachine, SubSM)
{
 enum class StateId { kTerm, kInit, k1, k2 };
 enum class EventId { kTerm, k1, k2 };

SM sm, sub_sm;

sm.newState(StateId::kInit, nullptr, nullptr);
 sm.newState(StateId::k1, nullptr, nullptr);
 sm.newState(StateId::k2, nullptr, nullptr);

sm.addRoute(StateId::kInit, EventId::k1, StateId::k1, nullptr, nullptr);
 sm.addRoute(StateId::kInit, EventId::k2, StateId::k2, nullptr, nullptr);
 sm.addRoute(StateId::k1, EventId::k1, StateId::kTerm, nullptr, nullptr);
 sm.addRoute(StateId::k1, EventId::k2, StateId::k2, nullptr, nullptr);
 sm.addRoute(StateId::k2, EventId::k1, StateId::k1, nullptr, nullptr);
 sm.addRoute(StateId::k2, EventId::k2, StateId::k1, nullptr, nullptr);

sub_sm.newState(StateId::kInit, nullptr, nullptr);
 sub_sm.newState(StateId::k1, nullptr, nullptr);
 sub_sm.newState(StateId::k2, nullptr, nullptr);

sub_sm.addRoute(StateId::kInit, EventId::k1, StateId::k1, nullptr, nullptr);
 sub_sm.addRoute(StateId::kInit, EventId::k2, StateId::k2, nullptr, nullptr);
 sub_sm.addRoute(StateId::k1, EventId::k2, StateId::k2, nullptr, nullptr);
 sub_sm.addRoute(StateId::k1, EventId::k1, StateId::kTerm, nullptr, nullptr);
 sub_sm.addRoute(StateId::k2, EventId::k1, StateId::k1, nullptr, nullptr);
 sub_sm.addRoute(StateId::k2, EventId::k2, StateId::kTerm, nullptr, nullptr);

sm.setSubStateMachine(StateId::k1, &sub_sm);

{ //! 直通
 sm.start();

EXPECT_EQ(sm.currentState<StateId>(), StateId::kInit);
 EXPECT_EQ(sub_sm.currentState(), -1);

EXPECT_TRUE(sm.run(EventId::k1));
 EXPECT_EQ(sm.currentState<StateId>(), StateId::k1);
 EXPECT_EQ(sub_sm.currentState<StateId>(), StateId::k1);

EXPECT_TRUE(sm.run(EventId::k1));
 EXPECT_EQ(sm.currentState<StateId>(), StateId::kTerm);
 EXPECT_EQ(sub_sm.currentState(), -1);

EXPECT_TRUE(sm.isTerminated());

sm.stop();
 }

{ //! 在子状态机里转了一下
 sm.start();

EXPECT_EQ(sm.currentState<StateId>(), StateId::kInit);
 EXPECT_EQ(sub_sm.currentState(), -1);

EXPECT_TRUE(sm.run(EventId::k1));
 EXPECT_EQ(sm.currentState<StateId>(), StateId::k1);
 EXPECT_EQ(sub_sm.currentState<StateId>(), StateId::k1);

EXPECT_TRUE(sm.run(EventId::k2));
 EXPECT_EQ(sm.currentState<StateId>(), StateId::k1);
 EXPECT_EQ(sub_sm.currentState<StateId>(), StateId::k2);

EXPECT_TRUE(sm.run(EventId::k1));
 EXPECT_EQ(sm.currentState<StateId>(), StateId::k1);
 EXPECT_EQ(sub_sm.currentState<StateId>(), StateId::k1);

EXPECT_TRUE(sm.run(EventId::k1));
 EXPECT_EQ(sm.currentState<StateId>(), StateId::kTerm);
 EXPECT_EQ(sub_sm.currentState(), -1);
 EXPECT_TRUE(sm.isTerminated());

sm.stop();
 }

{ //! 从S2进的S1的子状态机,再出来回到S2,再进去
 sm.start();

EXPECT_EQ(sm.currentState<StateId>(), StateId::kInit);
 EXPECT_EQ(sub_sm.currentState(), -1);

EXPECT_TRUE(sm.run(EventId::k2));
 EXPECT_EQ(sm.currentState<StateId>(), StateId::k2);
 EXPECT_EQ(sub_sm.currentState(), -1);

EXPECT_TRUE(sm.run(EventId::k2));
 EXPECT_EQ(sm.currentState<StateId>(), StateId::k1);
 EXPECT_EQ(sub_sm.currentState<StateId>(), StateId::k2);

EXPECT_TRUE(sm.run(EventId::k2));
 EXPECT_EQ(sm.currentState<StateId>(), StateId::k2);
 EXPECT_EQ(sub_sm.currentState(), -1);

EXPECT_TRUE(sm.run(EventId::k2));
 EXPECT_EQ(sm.currentState<StateId>(), StateId::k1);
 EXPECT_EQ(sub_sm.currentState<StateId>(), StateId::k2);

EXPECT_TRUE(sm.run(EventId::k1));
 EXPECT_EQ(sm.currentState<StateId>(), StateId::k1);
 EXPECT_EQ(sub_sm.currentState<StateId>(), StateId::k1);

EXPECT_TRUE(sm.run(EventId::k1));
 EXPECT_EQ(sm.currentState<StateId>(), StateId::kTerm);
 EXPECT_EQ(sub_sm.currentState(), -1);

sm.stop();
 }
}

TEST(StateMachine, StateChangedCallback)
{
 enum class StateId { kTerm, kInit, k1 };
 enum class EventId { kAny, k1 };

SM sm;

sm.newState(StateId::kInit, nullptr, nullptr);
 sm.newState(StateId::k1, nullptr, nullptr);

sm.addRoute(StateId::kInit, EventId::k1, StateId::k1, nullptr, nullptr);
 sm.addRoute(StateId::k1, EventId::k1, StateId::kTerm, nullptr, nullptr);

StateId from, to;
 EventId event;

sm.setStateChangedCallback(
 [&] (SM::StateID f, SM::StateID t, Event e) {
 from = static_cast<StateId>(f);
 to = static_cast<StateId>(t);
 event = static_cast<EventId>(e.id);
 }
 );
 sm.start();
 sm.run(EventId::k1);
 EXPECT_EQ(from, StateId::kInit);
 EXPECT_EQ(to, StateId::k1);
 EXPECT_EQ(event, EventId::k1);

sm.run(EventId::k1);
 EXPECT_EQ(from, StateId::k1);
 EXPECT_EQ(to, StateId::kTerm);
 EXPECT_EQ(event, EventId::k1);
}

//! 测试起始状态有子状态的情况
TEST(StateMachine, InitStateHasSubMachine)
{
 enum class StateId { kTerm, kInit };
 enum class EventId { kAny, k1 };

SM sm;
 SM sub_sm;

int step = 0;
 sm.newState(StateId::kInit, [&](Event){ EXPECT_EQ(step, 0); ++step; }, [&](Event){ EXPECT_EQ(step, 6); ++step; });
 sm.newState(StateId::kTerm, [&](Event){ EXPECT_EQ(step, 8); ++step; }, [&](Event){ EXPECT_EQ(step, 9); ++step; });
 sm.addRoute(StateId::kInit, EventId::k1, StateId::kTerm, nullptr, [&](Event){ EXPECT_EQ(step, 7); ++step; });

sub_sm.newState(StateId::kInit, [&](Event){ EXPECT_EQ(step, 1); ++step; }, [&](Event){ EXPECT_EQ(step, 2); ++step; });
 sub_sm.newState(StateId::kTerm, [&](Event){ EXPECT_EQ(step, 4); ++step; }, [&](Event){ EXPECT_EQ(step, 5); ++step; });
 sub_sm.addRoute(StateId::kInit, EventId::k1, StateId::kTerm, nullptr, [&](Event){ EXPECT_EQ(step, 3); ++step; });

sm.setSubStateMachine(StateId::kInit, &sub_sm);
#if 0
 sm.setStateChangedCallback(
 [&] (SM::StateID f, SM::StateID t, EventID e) {
 cout << f << "-->" << t << "," << e << endl;
 }
 );
 sub_sm.setStateChangedCallback(
 [&] (SM::StateID f, SM::StateID t, EventID e) {
 cout << " " << f << "-->" << t << "," << e << endl;
 }
 );
#endif
 sm.start();
 sm.run(EventId::k1);
 sm.stop();
}

//! 测试各种Action之间的执行顺序
TEST(StateMachine, SubSMActionOrder)
{
 enum class StateId { kTerm, kInit, k1};
 enum class EventId { kAny, k1 };

SM sm;
 SM sub_sm;

int step = 0;
 sm.newState(StateId::kInit, [&](Event){ EXPECT_EQ(step, 0); ++step; }, [&](Event){ EXPECT_EQ(step, 1); ++step; });
 sm.newState(StateId::k1, [&](Event){ EXPECT_EQ(step, 3); ++step; }, [&](Event){ EXPECT_EQ(step, 9); ++step; });
 sm.newState(StateId::kTerm, [&](Event){ EXPECT_EQ(step, 11); ++step; }, [&](Event){ EXPECT_EQ(step, 12); ++step; });

sm.addRoute(StateId::kInit, EventId::k1, StateId::k1, nullptr, [&](Event){ EXPECT_EQ(step, 2); ++step; });
 sm.addRoute(StateId::k1, EventId::k1, StateId::kTerm, nullptr, [&](Event){ EXPECT_EQ(step, 10); ++step; });

sub_sm.newState(StateId::kInit, [&](Event){ EXPECT_EQ(step, 4); ++step; }, [&](Event){ EXPECT_EQ(step, 5); ++step; });
 sub_sm.newState(StateId::kTerm, [&](Event){ EXPECT_EQ(step, 7); ++step; }, [&](Event){ EXPECT_EQ(step, 8); ++step; });
 sub_sm.addRoute(StateId::kInit, EventId::k1, StateId::kTerm, nullptr, [&](Event){ EXPECT_EQ(step, 6); ++step; });

sm.setSubStateMachine(StateId::k1, &sub_sm);
#if 0
 sm.setStateChangedCallback(
 [&] (SM::StateID f, SM::StateID t, EventID e) {
 cout << f << "-->" << t << "," << e << endl;
 }
 );
 sub_sm.setStateChangedCallback(
 [&] (SM::StateID f, SM::StateID t, EventID e) {
 cout << " " << f << "-->" << t << "," << e << endl;
 }
 );
#endif
 sm.start();
 sm.run(EventId::k1);
 sm.run(EventId::k1);
 sm.stop();
}

TEST(StateMachine, EventExtra)
{
 enum class StateId { kTerm, kInit };

SM sm;

int extra_data = 100;
 int count = 0;
 sm.newState(StateId::kInit,
 [&](Event e){
 ++count;
 EXPECT_EQ(e.id, 0);
 EXPECT_EQ(e.extra, nullptr);
 },
 [&](Event e){
 ++count;
 EXPECT_EQ(e.id, 10);
 EXPECT_EQ(e.extra, &extra_data);
 }
 );
 sm.newState(StateId::kTerm,
 [&](Event e){
 ++count;
 EXPECT_EQ(e.id, 10);
 EXPECT_EQ(e.extra, &extra_data);
 },
 [&](Event e){
 ++count;
 EXPECT_EQ(e.id, 0);
 EXPECT_EQ(e.extra, nullptr);
 }
 );

sm.addRoute(StateId::kInit, 10, StateId::kTerm,
 [&](Event e){
 ++count;
 EXPECT_EQ(e.id, 10);
 EXPECT_EQ(e.extra, &extra_data);
 return true;
 },
 [&](Event e){
 ++count;
 EXPECT_EQ(e.id, 10);
 EXPECT_EQ(e.extra, &extra_data);
 }
 );

sm.setStateChangedCallback(
 [&] (SM::StateID f, SM::StateID t, Event e) {
 ++count;
 EXPECT_EQ(e.id, 10);
 EXPECT_EQ(e.extra, &extra_data);
 (void)f;
 (void)t;
 }
 );

sm.start();
 sm.run(Event(10, &extra_data));
 sm.stop();
 EXPECT_EQ(count, 7);
}

TEST(StateMachine, InnerEvent) {
 enum class StateId { kTerm, k1, k2 };
 enum class EventId { kAny, k1 };

SM sm;

bool is_k1_event_run = false;
 bool is_k2_event_run = false;

sm.setInitState(StateId::k1);
 sm.newState(StateId::k1, nullptr, nullptr);
 sm.newState(StateId::k2, nullptr, nullptr);
 sm.addEvent(StateId::k1, EventId::k1, [&](Event) { is_k1_event_run = true; return -1; });
 sm.addRoute(StateId::k1, EventId::k1, StateId::k2, nullptr, nullptr);
 sm.addEvent(StateId::k2, EventId::k1, [&](Event) { is_k2_event_run = true; return -1; });

sm.start();
 sm.run(EventId::k1);
 EXPECT_TRUE(is_k1_event_run);
 EXPECT_FALSE(is_k2_event_run);
 EXPECT_EQ(sm.currentState<StateId>(), StateId::k2);

is_k1_event_run = false;
 sm.run(EventId::k1);
 EXPECT_FALSE(is_k1_event_run);
 EXPECT_TRUE(is_k2_event_run);
}

TEST(StateMachine, InnerAnyEvent) {
 enum class StateId { kTerm, k1 };
 enum class EventId { kAny, k1, k2 };

SM sm;

bool is_k1_event_run = false;
 bool is_any_event_run = false;

sm.setInitState(StateId::k1);
 sm.newState(StateId::k1, nullptr, nullptr);
 sm.addEvent(StateId::k1, EventId::k1, [&](Event) { is_k1_event_run = true; return -1; });
 sm.addEvent(StateId::k1, EventId::kAny, [&](Event) { is_any_event_run = true; return -1; });

sm.start();
 sm.run(EventId::k1);
 EXPECT_TRUE(is_k1_event_run);
 EXPECT_FALSE(is_any_event_run);

is_k1_event_run = false;
 sm.run(EventId::k2);
 EXPECT_FALSE(is_k1_event_run);
 EXPECT_TRUE(is_any_event_run);
}

TEST(StateMachine, SwitchStateInEvent) {
 SM sm;
 sm.newState(STATE_A, nullptr, nullptr);
 sm.newState(STATE_B, nullptr, nullptr);
 sm.setInitState(STATE_A);

sm.addEvent(STATE_A, EVENT_ANY,
 [](Event e) -> SM::StateID {
 if (e.id == EVENT_1)
 return STATE_B;
 if (e.id == EVENT_2)
 return STATE_TERM;
 return -1;
 }
 );
 sm.addEvent(STATE_B, EVENT_1,
 [](Event e) -> SM::StateID { return STATE_A; (void)e; }
 );
 sm.start();

EXPECT_EQ(sm.currentState(), STATE_A);
 EXPECT_TRUE(sm.run(EVENT_1));
 EXPECT_EQ(sm.currentState(), STATE_B);
 EXPECT_FALSE(sm.run(EVENT_2));
 EXPECT_TRUE(sm.run(EVENT_1));
 EXPECT_EQ(sm.currentState(), STATE_A);
 EXPECT_TRUE(sm.run(EVENT_2));
 EXPECT_EQ(sm.currentState(), STATE_TERM);
 EXPECT_TRUE(sm.isTerminated());
}

TEST(StateMachine, SetInitState)
{
 enum class StateId { kTerm, k1, kInit };
 enum class EventId { kAny, k1 };

SM sm;

sm.setInitState(StateId::kInit);
 sm.newState(StateId::kInit, nullptr, nullptr);
 sm.newState(StateId::k1, nullptr, nullptr);

EXPECT_TRUE(sm.start());
 EXPECT_EQ(sm.currentState<StateId>(), StateId::kInit);
}

TEST(StateMachine, SetInitState_Fail)
{
 enum class StateId { kTerm, k1, kInit };
 enum class EventId { kAny, k1 };

SM sm;

sm.setInitState(StateId::kInit);
 sm.newState(StateId::k1, nullptr, nullptr);

EXPECT_FALSE(sm.start());
}

TEST(StateMachine, LastNextState)
{
 enum class StateId {
 kNone = -1,
 kTerm = 0,
 kInit,
 kA
 };
 enum class EventId {
 kAny,
 k1
 };

SM sm;

int count = 0;
 sm.setInitState(StateId::kInit);
 sm.newState(StateId::kInit,
 [&] (Event) {
 ++count;
 EXPECT_EQ(sm.currentState<StateId>(), StateId::kInit);
 EXPECT_EQ(sm.lastState(), -1);
 EXPECT_EQ(sm.nextState(), -1);
 },
 [&] (Event) {
 ++count;
 EXPECT_EQ(sm.currentState<StateId>(), StateId::kInit);
 EXPECT_EQ(sm.lastState(), -1);
 EXPECT_EQ(sm.nextState<StateId>(), StateId::kA);
 }
 );
 sm.newState(StateId::kA,
 [&] (Event) {
 ++count;
 EXPECT_EQ(sm.currentState<StateId>(), StateId::kA);
 EXPECT_EQ(sm.lastState<StateId>(), StateId::kInit);
 EXPECT_EQ(sm.nextState(), -1);
 },
 [&] (Event) {
 ++count;
 EXPECT_EQ(sm.currentState<StateId>(), StateId::kA);
 EXPECT_EQ(sm.lastState<StateId>(), StateId::kInit);
 EXPECT_EQ(sm.nextState<StateId>(), StateId::kTerm);
 }
 );
 sm.newState(StateId::kTerm,
 [&] (Event) {
 ++count;
 EXPECT_EQ(sm.currentState<StateId>(), StateId::kTerm);
 EXPECT_EQ(sm.lastState<StateId>(), StateId::kA);
 EXPECT_EQ(sm.nextState(), -1);
 },
 nullptr
 );

sm.addRoute(StateId::kInit, EventId::k1, StateId::kA, nullptr,
 [&] (Event) {
 ++count;
 EXPECT_EQ(sm.currentState(), -1);
 EXPECT_EQ(sm.lastState<StateId>(), StateId::kInit);
 EXPECT_EQ(sm.nextState<StateId>(), StateId::kA);
 }
 );
 sm.addRoute(StateId::kA, EventId::k1, StateId::kTerm, nullptr,
 [&] (Event) {
 ++count;
 EXPECT_EQ(sm.currentState(), -1);
 EXPECT_EQ(sm.lastState<StateId>(), StateId::kA);
 EXPECT_EQ(sm.nextState<StateId>(), StateId::kTerm);
 }
 );

sm.start();

sm.run(EventId::k1);
 sm.run(EventId::k1);

EXPECT_EQ(count, 7);
}

}
}

Copy Edit Raw Blame History

海卫哥 authored 2023年08月07日 23:54 +08:00 . feat(flow,dbus):1.5.8

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/*
 * .============.
 * // M A K E / \
 * // C++ DEV / \
 * // E A S Y / \/ \
 * ++ ----------. \/\ .
 * \\ \ \ /\ /
 * \\ \ \ /
 * \\ \ \ /
 * -============'
 *
 * Copyright (c) 2018 Hevake and contributors, all rights reserved.
 *
 * This file is part of cpp-tbox (https://github.com/cpp-main/cpp-tbox)
 * Use of this source code is governed by MIT license that can be found
 * in the LICENSE file in the root of the source tree. All contributing
 * project authors may be found in the CONTRIBUTORS.md file in the root
 * of the source tree.
 */
#include <gtest/gtest.h>

#include <tbox/base/json.hpp>
#include "state_machine.h"

using namespace std;

namespace tbox {
namespace flow {

using SM = StateMachine;

enum StateId {
 STATE_TERM = 0,
 STATE_A,
 STATE_B,
 STATE_C,
 STATE_D,
};

enum EventId {
 EVENT_ANY = 0,
 EVENT_1,
 EVENT_2,
 EVENT_3,
 EVENT_4,
};

//! 测试创建状态
TEST(StateMachine, NewState)
{
 SM sm;
 EXPECT_TRUE (sm.newState(STATE_A, nullptr, nullptr));
 EXPECT_TRUE (sm.newState(STATE_B, nullptr, nullptr));
 EXPECT_FALSE(sm.newState(STATE_A, nullptr, nullptr));
}

//! 测试创建事件
TEST(StateMachine, AddRoute)
{
 SM sm;
 sm.newState(STATE_A, nullptr, nullptr);
 sm.newState(STATE_B, nullptr, nullptr);

 EXPECT_TRUE (sm.addRoute(STATE_A, EVENT_1, STATE_B, nullptr, nullptr));
 EXPECT_FALSE(sm.addRoute(STATE_A, EVENT_1, STATE_C, nullptr, nullptr));
 EXPECT_FALSE(sm.addRoute(STATE_C, EVENT_1, STATE_B, nullptr, nullptr));
 EXPECT_FALSE(sm.addRoute(STATE_C, EVENT_1, STATE_D, nullptr, nullptr));
}

//! 测试创建两个状态,一个事件由A到B转换,没有守卫与执行函数
TEST(StateMachine, StateWithoutGuardAndAction)
{
 SM sm;
 sm.newState(STATE_A, nullptr, nullptr);
 sm.newState(STATE_B, nullptr, nullptr);
 sm.addRoute(STATE_A, EVENT_1, STATE_B, nullptr, nullptr);
 sm.setInitState(STATE_A);
 sm.start();

 EXPECT_EQ(sm.currentState(), STATE_A);
 EXPECT_TRUE(sm.run(EVENT_1));
 EXPECT_EQ(sm.currentState(), STATE_B);
 EXPECT_FALSE(sm.run(EVENT_2));
}

//! 测试创建两个状态,一个事件由A到B转换,有守卫
TEST(StateMachine, RouteWithGuard)
{
 SM sm;
 sm.newState(STATE_A, nullptr, nullptr);
 sm.newState(STATE_B, nullptr, nullptr);
 sm.newState(STATE_C, nullptr, nullptr);

 bool condition = false;
 sm.addRoute(STATE_A, EVENT_1, STATE_B, [&](Event){ return !condition; }, nullptr);
 sm.addRoute(STATE_A, EVENT_1, STATE_C, [&](Event){ return condition; }, nullptr);
 sm.addRoute(STATE_B, EVENT_2, STATE_A, nullptr, nullptr);
 sm.addRoute(STATE_C, EVENT_2, STATE_A, nullptr, nullptr);
 sm.setInitState(STATE_A);
 sm.start();

 EXPECT_EQ(sm.currentState(), STATE_A);

 condition = false;
 EXPECT_TRUE(sm.run(EVENT_1));
 EXPECT_EQ(sm.currentState(), STATE_B);

 EXPECT_TRUE(sm.run(EVENT_2));
 EXPECT_EQ(sm.currentState(), STATE_A);

 condition = true;
 EXPECT_TRUE(sm.run(EVENT_1));
 EXPECT_EQ(sm.currentState(), STATE_C);

 EXPECT_TRUE(sm.run(EVENT_2));
 EXPECT_EQ(sm.currentState(), STATE_A);
}

//! 测试创建两个状态,一个事件由A到B转换,有进入与退出动作
TEST(StateMachine, StateWithEnterAndExitAction)
{
 SM sm;

 int a_enter_counter = 0;
 int a_exit_counter = 0;
 int b_enter_counter = 0;
 int b_exit_counter = 0;

 sm.newState(STATE_A, [&](Event){ ++a_enter_counter; }, [&](Event){ ++a_exit_counter; });
 sm.newState(STATE_B, [&](Event){ ++b_enter_counter; }, [&](Event){ ++b_exit_counter; });

 sm.addRoute(STATE_A, EVENT_1, STATE_B, nullptr, nullptr);
 sm.addRoute(STATE_B, EVENT_2, STATE_A, nullptr, nullptr);

 sm.setInitState(STATE_A);
 EXPECT_EQ(a_enter_counter, 0);
 sm.start();
 EXPECT_EQ(a_enter_counter, 1);

 sm.run(EVENT_1);
 EXPECT_EQ(a_exit_counter, 1);
 EXPECT_EQ(b_enter_counter, 1);

 sm.run(EVENT_2);
 EXPECT_EQ(b_exit_counter, 1);
 EXPECT_EQ(a_enter_counter, 2);
}

//! 测试创建两个状态,一个事件由A到B转换,事件有转换动作
TEST(StateMachine, EventWithAction)
{
 SM sm;

 sm.newState(STATE_A, nullptr, nullptr);
 sm.newState(STATE_B, nullptr, nullptr);

 int count_1 = 0;
 int count_2 = 0;

 sm.addRoute(STATE_A, EVENT_1, STATE_B, nullptr, [&](Event){ ++count_1; });
 sm.addRoute(STATE_B, EVENT_2, STATE_A, nullptr, [&](Event){ ++count_2; });
 sm.setInitState(STATE_A);
 sm.start();

 sm.run(EVENT_1);
 EXPECT_EQ(count_1, 1);

 sm.run(EVENT_2);
 EXPECT_EQ(count_2, 1);
}

TEST(StateMachine, AnyEvent)
{
 SM sm;

 sm.newState(STATE_A, nullptr, nullptr);
 sm.newState(STATE_B, nullptr, nullptr);

 sm.addRoute(STATE_A, 0, STATE_B, nullptr, nullptr);
 sm.addRoute(STATE_B, 0, STATE_A, nullptr, nullptr);
 sm.setInitState(STATE_A);
 sm.start();

 sm.run(EVENT_1);
 EXPECT_EQ(sm.currentState(), STATE_B);
 sm.run(EVENT_2);
 EXPECT_EQ(sm.currentState(), STATE_A);
 sm.run(EVENT_3);
 EXPECT_EQ(sm.currentState(), STATE_B);
}

TEST(StateMachine, Restart)
{
 SM sm;

 int a_enter_counter = 0;
 int a_exit_counter = 0;
 int b_enter_counter = 0;
 int b_exit_counter = 0;

 sm.newState(STATE_A, [&](Event){ ++a_enter_counter; }, [&](Event){ ++a_exit_counter; });
 sm.newState(STATE_B, [&](Event){ ++b_enter_counter; }, [&](Event){ ++b_exit_counter; });

 sm.addRoute(STATE_A, EVENT_1, STATE_B, nullptr, nullptr);
 sm.setInitState(STATE_A);
 sm.start();
 EXPECT_EQ(a_enter_counter, 1);
 EXPECT_TRUE(sm.run(EVENT_1));
 EXPECT_EQ(a_exit_counter, 1);
 EXPECT_EQ(b_enter_counter, 1);
 sm.restart();
 EXPECT_EQ(b_exit_counter, 1);
 EXPECT_EQ(a_enter_counter, 2);
 EXPECT_EQ(sm.currentState(), STATE_A);
}

//! 主要测试用 enum class 定义的状态与事件是否能编译过
TEST(StateMachine, EnumClass)
{
 SM sm;
 enum class StateId { k1 = 1, k2 };
 enum class EventId { k1 = 1, k2 };

 int enter_counter = 0;
 int exit_counter = 0;

 sm.newState(StateId::k1, [&](Event){ ++enter_counter; }, [&](Event){ ++exit_counter; });
 sm.newState(StateId::k2, nullptr, nullptr);

 sm.addRoute(StateId::k1, EventId::k1, StateId::k2, nullptr, nullptr);
 sm.addRoute(StateId::k2, EventId::k2, StateId::k1, nullptr, nullptr);
 sm.setInitState(StateId::k1);
 sm.start();
 sm.run(EventId::k1);
 sm.run(EventId::k2);
 sm.stop();

 EXPECT_EQ(enter_counter, 2);
 EXPECT_EQ(exit_counter, 2);
}

TEST(StateMachine, SubSM)
{
 enum class StateId { kTerm, kInit, k1, k2 };
 enum class EventId { kTerm, k1, k2 };

 SM sm, sub_sm;

 sm.newState(StateId::kInit, nullptr, nullptr);
 sm.newState(StateId::k1, nullptr, nullptr);
 sm.newState(StateId::k2, nullptr, nullptr);

 sm.addRoute(StateId::kInit, EventId::k1, StateId::k1, nullptr, nullptr);
 sm.addRoute(StateId::kInit, EventId::k2, StateId::k2, nullptr, nullptr);
 sm.addRoute(StateId::k1, EventId::k1, StateId::kTerm, nullptr, nullptr);
 sm.addRoute(StateId::k1, EventId::k2, StateId::k2, nullptr, nullptr);
 sm.addRoute(StateId::k2, EventId::k1, StateId::k1, nullptr, nullptr);
 sm.addRoute(StateId::k2, EventId::k2, StateId::k1, nullptr, nullptr);

 sub_sm.newState(StateId::kInit, nullptr, nullptr);
 sub_sm.newState(StateId::k1, nullptr, nullptr);
 sub_sm.newState(StateId::k2, nullptr, nullptr);

 sub_sm.addRoute(StateId::kInit, EventId::k1, StateId::k1, nullptr, nullptr);
 sub_sm.addRoute(StateId::kInit, EventId::k2, StateId::k2, nullptr, nullptr);
 sub_sm.addRoute(StateId::k1, EventId::k2, StateId::k2, nullptr, nullptr);
 sub_sm.addRoute(StateId::k1, EventId::k1, StateId::kTerm, nullptr, nullptr);
 sub_sm.addRoute(StateId::k2, EventId::k1, StateId::k1, nullptr, nullptr);
 sub_sm.addRoute(StateId::k2, EventId::k2, StateId::kTerm, nullptr, nullptr);

 sm.setSubStateMachine(StateId::k1, &sub_sm);

 { //! 直通
 sm.start();

 EXPECT_EQ(sm.currentState<StateId>(), StateId::kInit);
 EXPECT_EQ(sub_sm.currentState(), -1);

 EXPECT_TRUE(sm.run(EventId::k1));
 EXPECT_EQ(sm.currentState<StateId>(), StateId::k1);
 EXPECT_EQ(sub_sm.currentState<StateId>(), StateId::k1);

 EXPECT_TRUE(sm.run(EventId::k1));
 EXPECT_EQ(sm.currentState<StateId>(), StateId::kTerm);
 EXPECT_EQ(sub_sm.currentState(), -1);

 EXPECT_TRUE(sm.isTerminated());

 sm.stop();
 }

 { //! 在子状态机里转了一下
 sm.start();

 EXPECT_EQ(sm.currentState<StateId>(), StateId::kInit);
 EXPECT_EQ(sub_sm.currentState(), -1);

 EXPECT_TRUE(sm.run(EventId::k1));
 EXPECT_EQ(sm.currentState<StateId>(), StateId::k1);
 EXPECT_EQ(sub_sm.currentState<StateId>(), StateId::k1);

 EXPECT_TRUE(sm.run(EventId::k2));
 EXPECT_EQ(sm.currentState<StateId>(), StateId::k1);
 EXPECT_EQ(sub_sm.currentState<StateId>(), StateId::k2);

 EXPECT_TRUE(sm.run(EventId::k1));
 EXPECT_EQ(sm.currentState<StateId>(), StateId::k1);
 EXPECT_EQ(sub_sm.currentState<StateId>(), StateId::k1);

 EXPECT_TRUE(sm.run(EventId::k1));
 EXPECT_EQ(sm.currentState<StateId>(), StateId::kTerm);
 EXPECT_EQ(sub_sm.currentState(), -1);
 EXPECT_TRUE(sm.isTerminated());

 sm.stop();
 }

 { //! 从S2进的S1的子状态机,再出来回到S2,再进去
 sm.start();

 EXPECT_EQ(sm.currentState<StateId>(), StateId::kInit);
 EXPECT_EQ(sub_sm.currentState(), -1);

 EXPECT_TRUE(sm.run(EventId::k2));
 EXPECT_EQ(sm.currentState<StateId>(), StateId::k2);
 EXPECT_EQ(sub_sm.currentState(), -1);

 EXPECT_TRUE(sm.run(EventId::k2));
 EXPECT_EQ(sm.currentState<StateId>(), StateId::k1);
 EXPECT_EQ(sub_sm.currentState<StateId>(), StateId::k2);

 EXPECT_TRUE(sm.run(EventId::k2));
 EXPECT_EQ(sm.currentState<StateId>(), StateId::k2);
 EXPECT_EQ(sub_sm.currentState(), -1);

 EXPECT_TRUE(sm.run(EventId::k2));
 EXPECT_EQ(sm.currentState<StateId>(), StateId::k1);
 EXPECT_EQ(sub_sm.currentState<StateId>(), StateId::k2);

 EXPECT_TRUE(sm.run(EventId::k1));
 EXPECT_EQ(sm.currentState<StateId>(), StateId::k1);
 EXPECT_EQ(sub_sm.currentState<StateId>(), StateId::k1);

 EXPECT_TRUE(sm.run(EventId::k1));
 EXPECT_EQ(sm.currentState<StateId>(), StateId::kTerm);
 EXPECT_EQ(sub_sm.currentState(), -1);

 sm.stop();
 }
}

TEST(StateMachine, StateChangedCallback)
{
 enum class StateId { kTerm, kInit, k1 };
 enum class EventId { kAny, k1 };

 SM sm;

 sm.newState(StateId::kInit, nullptr, nullptr);
 sm.newState(StateId::k1, nullptr, nullptr);

 sm.addRoute(StateId::kInit, EventId::k1, StateId::k1, nullptr, nullptr);
 sm.addRoute(StateId::k1, EventId::k1, StateId::kTerm, nullptr, nullptr);

 StateId from, to;
 EventId event;

 sm.setStateChangedCallback(
 [&] (SM::StateID f, SM::StateID t, Event e) {
 from = static_cast<StateId>(f);
 to = static_cast<StateId>(t);
 event = static_cast<EventId>(e.id);
 }
 );
 sm.start();
 sm.run(EventId::k1);
 EXPECT_EQ(from, StateId::kInit);
 EXPECT_EQ(to, StateId::k1);
 EXPECT_EQ(event, EventId::k1);

 sm.run(EventId::k1);
 EXPECT_EQ(from, StateId::k1);
 EXPECT_EQ(to, StateId::kTerm);
 EXPECT_EQ(event, EventId::k1);
}

//! 测试起始状态有子状态的情况
TEST(StateMachine, InitStateHasSubMachine)
{
 enum class StateId { kTerm, kInit };
 enum class EventId { kAny, k1 };

 SM sm;
 SM sub_sm;

 int step = 0;
 sm.newState(StateId::kInit, [&](Event){ EXPECT_EQ(step, 0); ++step; }, [&](Event){ EXPECT_EQ(step, 6); ++step; });
 sm.newState(StateId::kTerm, [&](Event){ EXPECT_EQ(step, 8); ++step; }, [&](Event){ EXPECT_EQ(step, 9); ++step; });
 sm.addRoute(StateId::kInit, EventId::k1, StateId::kTerm, nullptr, [&](Event){ EXPECT_EQ(step, 7); ++step; });

 sub_sm.newState(StateId::kInit, [&](Event){ EXPECT_EQ(step, 1); ++step; }, [&](Event){ EXPECT_EQ(step, 2); ++step; });
 sub_sm.newState(StateId::kTerm, [&](Event){ EXPECT_EQ(step, 4); ++step; }, [&](Event){ EXPECT_EQ(step, 5); ++step; });
 sub_sm.addRoute(StateId::kInit, EventId::k1, StateId::kTerm, nullptr, [&](Event){ EXPECT_EQ(step, 3); ++step; });

 sm.setSubStateMachine(StateId::kInit, &sub_sm);
#if 0
 sm.setStateChangedCallback(
 [&] (SM::StateID f, SM::StateID t, EventID e) {
 cout << f << "-->" << t << "," << e << endl;
 }
 );
 sub_sm.setStateChangedCallback(
 [&] (SM::StateID f, SM::StateID t, EventID e) {
 cout << " " << f << "-->" << t << "," << e << endl;
 }
 );
#endif
 sm.start();
 sm.run(EventId::k1);
 sm.stop();
}

//! 测试各种Action之间的执行顺序
TEST(StateMachine, SubSMActionOrder)
{
 enum class StateId { kTerm, kInit, k1};
 enum class EventId { kAny, k1 };

 SM sm;
 SM sub_sm;

 int step = 0;
 sm.newState(StateId::kInit, [&](Event){ EXPECT_EQ(step, 0); ++step; }, [&](Event){ EXPECT_EQ(step, 1); ++step; });
 sm.newState(StateId::k1, [&](Event){ EXPECT_EQ(step, 3); ++step; }, [&](Event){ EXPECT_EQ(step, 9); ++step; });
 sm.newState(StateId::kTerm, [&](Event){ EXPECT_EQ(step, 11); ++step; }, [&](Event){ EXPECT_EQ(step, 12); ++step; });

 sm.addRoute(StateId::kInit, EventId::k1, StateId::k1, nullptr, [&](Event){ EXPECT_EQ(step, 2); ++step; });
 sm.addRoute(StateId::k1, EventId::k1, StateId::kTerm, nullptr, [&](Event){ EXPECT_EQ(step, 10); ++step; });

 sub_sm.newState(StateId::kInit, [&](Event){ EXPECT_EQ(step, 4); ++step; }, [&](Event){ EXPECT_EQ(step, 5); ++step; });
 sub_sm.newState(StateId::kTerm, [&](Event){ EXPECT_EQ(step, 7); ++step; }, [&](Event){ EXPECT_EQ(step, 8); ++step; });
 sub_sm.addRoute(StateId::kInit, EventId::k1, StateId::kTerm, nullptr, [&](Event){ EXPECT_EQ(step, 6); ++step; });

 sm.setSubStateMachine(StateId::k1, &sub_sm);
#if 0
 sm.setStateChangedCallback(
 [&] (SM::StateID f, SM::StateID t, EventID e) {
 cout << f << "-->" << t << "," << e << endl;
 }
 );
 sub_sm.setStateChangedCallback(
 [&] (SM::StateID f, SM::StateID t, EventID e) {
 cout << " " << f << "-->" << t << "," << e << endl;
 }
 );
#endif
 sm.start();
 sm.run(EventId::k1);
 sm.run(EventId::k1);
 sm.stop();
}

TEST(StateMachine, EventExtra)
{
 enum class StateId { kTerm, kInit };

 SM sm;

 int extra_data = 100;
 int count = 0;
 sm.newState(StateId::kInit,
 [&](Event e){
 ++count;
 EXPECT_EQ(e.id, 0);
 EXPECT_EQ(e.extra, nullptr);
 },
 [&](Event e){
 ++count;
 EXPECT_EQ(e.id, 10);
 EXPECT_EQ(e.extra, &extra_data);
 }
 );
 sm.newState(StateId::kTerm,
 [&](Event e){
 ++count;
 EXPECT_EQ(e.id, 10);
 EXPECT_EQ(e.extra, &extra_data);
 },
 [&](Event e){
 ++count;
 EXPECT_EQ(e.id, 0);
 EXPECT_EQ(e.extra, nullptr);
 }
 );

 sm.addRoute(StateId::kInit, 10, StateId::kTerm,
 [&](Event e){
 ++count;
 EXPECT_EQ(e.id, 10);
 EXPECT_EQ(e.extra, &extra_data);
 return true;
 },
 [&](Event e){
 ++count;
 EXPECT_EQ(e.id, 10);
 EXPECT_EQ(e.extra, &extra_data);
 }
 );

 sm.setStateChangedCallback(
 [&] (SM::StateID f, SM::StateID t, Event e) {
 ++count;
 EXPECT_EQ(e.id, 10);
 EXPECT_EQ(e.extra, &extra_data);
 (void)f;
 (void)t;
 }
 );

 sm.start();
 sm.run(Event(10, &extra_data));
 sm.stop();
 EXPECT_EQ(count, 7);
} 

TEST(StateMachine, InnerEvent) {
 enum class StateId { kTerm, k1, k2 };
 enum class EventId { kAny, k1 };

 SM sm;

 bool is_k1_event_run = false;
 bool is_k2_event_run = false;

 sm.setInitState(StateId::k1);
 sm.newState(StateId::k1, nullptr, nullptr);
 sm.newState(StateId::k2, nullptr, nullptr);
 sm.addEvent(StateId::k1, EventId::k1, [&](Event) { is_k1_event_run = true; return -1; });
 sm.addRoute(StateId::k1, EventId::k1, StateId::k2, nullptr, nullptr);
 sm.addEvent(StateId::k2, EventId::k1, [&](Event) { is_k2_event_run = true; return -1; });

 sm.start();
 sm.run(EventId::k1);
 EXPECT_TRUE(is_k1_event_run);
 EXPECT_FALSE(is_k2_event_run);
 EXPECT_EQ(sm.currentState<StateId>(), StateId::k2);

 is_k1_event_run = false;
 sm.run(EventId::k1);
 EXPECT_FALSE(is_k1_event_run);
 EXPECT_TRUE(is_k2_event_run);
}

TEST(StateMachine, InnerAnyEvent) {
 enum class StateId { kTerm, k1 };
 enum class EventId { kAny, k1, k2 };

 SM sm;

 bool is_k1_event_run = false;
 bool is_any_event_run = false;

 sm.setInitState(StateId::k1);
 sm.newState(StateId::k1, nullptr, nullptr);
 sm.addEvent(StateId::k1, EventId::k1, [&](Event) { is_k1_event_run = true; return -1; });
 sm.addEvent(StateId::k1, EventId::kAny, [&](Event) { is_any_event_run = true; return -1; });

 sm.start();
 sm.run(EventId::k1);
 EXPECT_TRUE(is_k1_event_run);
 EXPECT_FALSE(is_any_event_run);

 is_k1_event_run = false;
 sm.run(EventId::k2);
 EXPECT_FALSE(is_k1_event_run);
 EXPECT_TRUE(is_any_event_run);
}

TEST(StateMachine, SwitchStateInEvent) {
 SM sm;
 sm.newState(STATE_A, nullptr, nullptr);
 sm.newState(STATE_B, nullptr, nullptr);
 sm.setInitState(STATE_A);

 sm.addEvent(STATE_A, EVENT_ANY,
 [](Event e) -> SM::StateID {
 if (e.id == EVENT_1)
 return STATE_B;
 if (e.id == EVENT_2)
 return STATE_TERM;
 return -1;
 }
 );
 sm.addEvent(STATE_B, EVENT_1,
 [](Event e) -> SM::StateID { return STATE_A; (void)e; }
 );
 sm.start();

 EXPECT_EQ(sm.currentState(), STATE_A);
 EXPECT_TRUE(sm.run(EVENT_1));
 EXPECT_EQ(sm.currentState(), STATE_B);
 EXPECT_FALSE(sm.run(EVENT_2));
 EXPECT_TRUE(sm.run(EVENT_1));
 EXPECT_EQ(sm.currentState(), STATE_A);
 EXPECT_TRUE(sm.run(EVENT_2));
 EXPECT_EQ(sm.currentState(), STATE_TERM);
 EXPECT_TRUE(sm.isTerminated());
}

TEST(StateMachine, SetInitState)
{
 enum class StateId { kTerm, k1, kInit };
 enum class EventId { kAny, k1 };

 SM sm;

 sm.setInitState(StateId::kInit);
 sm.newState(StateId::kInit, nullptr, nullptr);
 sm.newState(StateId::k1, nullptr, nullptr);

 EXPECT_TRUE(sm.start());
 EXPECT_EQ(sm.currentState<StateId>(), StateId::kInit);
}

TEST(StateMachine, SetInitState_Fail)
{
 enum class StateId { kTerm, k1, kInit };
 enum class EventId { kAny, k1 };

 SM sm;

 sm.setInitState(StateId::kInit);
 sm.newState(StateId::k1, nullptr, nullptr);

 EXPECT_FALSE(sm.start());
}

TEST(StateMachine, LastNextState)
{
 enum class StateId {
 kNone = -1,
 kTerm = 0,
 kInit,
 kA
 };
 enum class EventId {
 kAny,
 k1
 };

 SM sm;

 int count = 0;
 sm.setInitState(StateId::kInit);
 sm.newState(StateId::kInit,
 [&] (Event) {
 ++count;
 EXPECT_EQ(sm.currentState<StateId>(), StateId::kInit);
 EXPECT_EQ(sm.lastState(), -1);
 EXPECT_EQ(sm.nextState(), -1);
 },
 [&] (Event) {
 ++count;
 EXPECT_EQ(sm.currentState<StateId>(), StateId::kInit);
 EXPECT_EQ(sm.lastState(), -1);
 EXPECT_EQ(sm.nextState<StateId>(), StateId::kA);
 }
 );
 sm.newState(StateId::kA,
 [&] (Event) {
 ++count;
 EXPECT_EQ(sm.currentState<StateId>(), StateId::kA);
 EXPECT_EQ(sm.lastState<StateId>(), StateId::kInit);
 EXPECT_EQ(sm.nextState(), -1);
 },
 [&] (Event) {
 ++count;
 EXPECT_EQ(sm.currentState<StateId>(), StateId::kA);
 EXPECT_EQ(sm.lastState<StateId>(), StateId::kInit);
 EXPECT_EQ(sm.nextState<StateId>(), StateId::kTerm);
 }
 );
 sm.newState(StateId::kTerm,
 [&] (Event) {
 ++count;
 EXPECT_EQ(sm.currentState<StateId>(), StateId::kTerm);
 EXPECT_EQ(sm.lastState<StateId>(), StateId::kA);
 EXPECT_EQ(sm.nextState(), -1);
 },
 nullptr
 );

 sm.addRoute(StateId::kInit, EventId::k1, StateId::kA, nullptr,
 [&] (Event) {
 ++count;
 EXPECT_EQ(sm.currentState(), -1);
 EXPECT_EQ(sm.lastState<StateId>(), StateId::kInit);
 EXPECT_EQ(sm.nextState<StateId>(), StateId::kA);
 }
 );
 sm.addRoute(StateId::kA, EventId::k1, StateId::kTerm, nullptr,
 [&] (Event) {
 ++count;
 EXPECT_EQ(sm.currentState(), -1);
 EXPECT_EQ(sm.lastState<StateId>(), StateId::kA);
 EXPECT_EQ(sm.nextState<StateId>(), StateId::kTerm);
 }
 );

 sm.start();

 sm.run(EventId::k1);
 sm.run(EventId::k1);

 EXPECT_EQ(count, 7);
}

}
}

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cpp-tbox是一个Linux C++,MIT开源许可的,基于 Reactor 模式的开发框架与组件库。它主要针对智能硬件、机器人、网络服务等开发领域。它提供了一套易于开发、稳定可靠的框架,有:通信库(TCP/UDP/串口)、HTTP、线程池、定时器池、协程、日志、命令终端、状态机、行为树等非常实用的开发组件,以及完备实用的主框架,能为广大开发者节省大量开发与调试时间。

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The Open Source Evaluation Index is derived from the OSS Compass evaluation system, which evaluates projects around the following three dimensions

1. Open source ecosystem

Productivity: To evaluate the ability of open-source projects to output software artifacts and open-source value.
Innovation: Used to evaluate the degree of diversity of open source software and its ecosystem.
Robustness: Used to evaluate the ability of open-source projects to resist internal and external interference and self recover in the face of changing development environments.

2. Collaboration, People, Software

Collaboration: represents the degree and depth of collaboration in open source development behavior.
Observe the influence of core personnel in open source projects, and examine the evaluations of users and developers on open source projects from a third-party perspective.
Software: Evaluate the value of products exported from open-source projects and their ultimate destination. It is also a concrete manifestation of "open source software", one of the oldest mainstream directions in open source evaluation.

3. Evaluation model

Based on the dimensions of "open source ecosystem" and "collaboration, people, and software", identify quantifiable indicators directly or indirectly related to this goal, quantitatively evaluate the health and ecology of open source projects, and ultimately form an open source evaluation index.