src/testcases/ConditionTest.cpp

#include "ConditionTest.h"

#include <iostream>

CPPUNIT_TEST_SUITE_REGISTRATION(ConditionTest);

using namespace std;


// ConditionChecker

ConditionTest::ConditionChecker::ConditionChecker(bool waitFor) : Thread(false, 0, -4) {
    resource = 0;
    this->waitFor = waitFor;
}

int ConditionTest::ConditionChecker::Main() {
    condition.WaitAndUnlockIf(!waitFor);
    resource++;
}


// ConditionSetter

ConditionTest::ConditionSetter::ConditionSetter(Condition* condition, bool toSet) : Thread(false, 0, -4) {
    resource = 0;
    this->toSet = toSet;
    this->condition = condition;
}

int ConditionTest::ConditionSetter::Main() {
    condition->Set(toSet);
    resource++;
}


// ConditionCheckerLocking

Condition ConditionTest::ConditionCheckerLocking::staticcondition; // we sheare the same Condition object between all instances of ConditionCheckerLocking

ConditionTest::ConditionCheckerLocking::ConditionCheckerLocking(bool waitFor) : ConditionChecker(waitFor) {
    doUnlock = false;
}

int ConditionTest::ConditionCheckerLocking::Main() {
    staticcondition.WaitIf(!waitFor);
    resource++;
    while (!doUnlock) usleep(1000); // sleep until ordered to unlock the condition again
    staticcondition.Unlock();
}


// ConditionTest

void ConditionTest::printTestSuiteName() {
    cout << "\b \nRunning Condition Tests: " << flush;
}

void ConditionTest::setUp() {
}

void ConditionTest::tearDown() {
}


// Check if Condition class doesn't block if desired condition is already reached
void ConditionTest::testDoesntBlockOnDesiredCondtion() {
    ConditionChecker t(false);
    t.SignalStartThread();
    usleep(200000); // wait 200ms
    CPPUNIT_ASSERT(t.resource == 1);
}

// Check if Condition class blocks if desired condition is not alredy reached
void ConditionTest::testBlocksIfNotDesiredCondition() {
    ConditionChecker t(true);
    t.SignalStartThread();
    usleep(400000); // wait 400ms
    CPPUNIT_ASSERT(t.resource == 0);
}

// Check if Condition class blocks until desired condition is reached
void ConditionTest::testBlocksUntilDesiredCondition() {
    ConditionChecker checker(true); // let that thread wait until condition equals 'true'
    ConditionSetter  setter(&checker.condition, true); // let this thread set the condition to 'true'
    checker.SignalStartThread();
    usleep(50000); // wait 50ms
    CPPUNIT_ASSERT(checker.resource == 0); // check if 'checker' thread has not passed the WaitAndUnlockIf() point yet
    setter.SignalStartThread();
    usleep(100000); // wait 100ms
    CPPUNIT_ASSERT(checker.resource == 1); // check if 'checker' thread passed the WaitAndUnlockIf() point
}

// Check if the WaitIf() call blocks concurrent threads until the first WaitIf() caller calls Unlock()
void ConditionTest::testWaitIFBlocksConcurrentThread() {
    // if the following three tests fail, then it doesn't make sense to continue with the actual one here
    testDoesntBlockOnDesiredCondtion();
    testBlocksIfNotDesiredCondition();
    testBlocksUntilDesiredCondition();

    // actual new test
    ConditionCheckerLocking checker1(false);
    ConditionCheckerLocking checker2(false);
    checker1.SignalStartThread();
    usleep(200000); // wait 200ms
    CPPUNIT_ASSERT(checker1.resource == 1);
    checker2.SignalStartThread();
    usleep(200000); // wait 200ms
    CPPUNIT_ASSERT(checker2.resource == 0); // check if condition locked by 'checker1'

    // now order 'checker1' thread to Unlock() the condition again
    checker1.doUnlock = true;
    usleep(200000); // wait 200ms
    CPPUNIT_ASSERT(checker2.resource == 1); // check if condition was unlocked by 'checker1'
}
1	#include "ConditionTest.h"
2
3	#include <iostream>
4
5	CPPUNIT_TEST_SUITE_REGISTRATION(ConditionTest);
6
7	using namespace std;
8
9
10	// ConditionChecker
11
12	ConditionTest::ConditionChecker::ConditionChecker(bool waitFor) : Thread(false, 0, -4) {
13	resource = 0;
14	this->waitFor = waitFor;
15	}
16
17	int ConditionTest::ConditionChecker::Main() {
18	condition.WaitAndUnlockIf(!waitFor);
19	resource++;
20	}
21
22
23	// ConditionSetter
24
25	ConditionTest::ConditionSetter::ConditionSetter(Condition* condition, bool toSet) : Thread(false, 0, -4) {
26	resource = 0;
27	this->toSet = toSet;
28	this->condition = condition;
29	}
30
31	int ConditionTest::ConditionSetter::Main() {
32	condition->Set(toSet);
33	resource++;
34	}
35
36
37	// ConditionCheckerLocking
38
39	Condition ConditionTest::ConditionCheckerLocking::staticcondition; // we sheare the same Condition object between all instances of ConditionCheckerLocking
40
41	ConditionTest::ConditionCheckerLocking::ConditionCheckerLocking(bool waitFor) : ConditionChecker(waitFor) {
42	doUnlock = false;
43	}
44
45	int ConditionTest::ConditionCheckerLocking::Main() {
46	staticcondition.WaitIf(!waitFor);
47	resource++;
48	while (!doUnlock) usleep(1000); // sleep until ordered to unlock the condition again
49	staticcondition.Unlock();
50	}
51
52
53	// ConditionTest
54
55	void ConditionTest::printTestSuiteName() {
56	cout << "\b \nRunning Condition Tests: " << flush;
57	}
58
59	void ConditionTest::setUp() {
60	}
61
62	void ConditionTest::tearDown() {
63	}
64
65
66	// Check if Condition class doesn't block if desired condition is already reached
67	void ConditionTest::testDoesntBlockOnDesiredCondtion() {
68	ConditionChecker t(false);
69	t.SignalStartThread();
70	usleep(200000); // wait 200ms
71	CPPUNIT_ASSERT(t.resource == 1);
72	}
73
74	// Check if Condition class blocks if desired condition is not alredy reached
75	void ConditionTest::testBlocksIfNotDesiredCondition() {
76	ConditionChecker t(true);
77	t.SignalStartThread();
78	usleep(400000); // wait 400ms
79	CPPUNIT_ASSERT(t.resource == 0);
80	}
81
82	// Check if Condition class blocks until desired condition is reached
83	void ConditionTest::testBlocksUntilDesiredCondition() {
84	ConditionChecker checker(true); // let that thread wait until condition equals 'true'
85	ConditionSetter setter(&checker.condition, true); // let this thread set the condition to 'true'
86	checker.SignalStartThread();
87	usleep(50000); // wait 50ms
88	CPPUNIT_ASSERT(checker.resource == 0); // check if 'checker' thread has not passed the WaitAndUnlockIf() point yet
89	setter.SignalStartThread();
90	usleep(100000); // wait 100ms
91	CPPUNIT_ASSERT(checker.resource == 1); // check if 'checker' thread passed the WaitAndUnlockIf() point
92	}
93
94	// Check if the WaitIf() call blocks concurrent threads until the first WaitIf() caller calls Unlock()
95	void ConditionTest::testWaitIFBlocksConcurrentThread() {
96	// if the following three tests fail, then it doesn't make sense to continue with the actual one here
97	testDoesntBlockOnDesiredCondtion();
98	testBlocksIfNotDesiredCondition();
99	testBlocksUntilDesiredCondition();
100
101	// actual new test
102	ConditionCheckerLocking checker1(false);
103	ConditionCheckerLocking checker2(false);
104	checker1.SignalStartThread();
105	usleep(200000); // wait 200ms
106	CPPUNIT_ASSERT(checker1.resource == 1);
107	checker2.SignalStartThread();
108	usleep(200000); // wait 200ms
109	CPPUNIT_ASSERT(checker2.resource == 0); // check if condition locked by 'checker1'
110
111	// now order 'checker1' thread to Unlock() the condition again
112	checker1.doUnlock = true;
113	usleep(200000); // wait 200ms
114	CPPUNIT_ASSERT(checker2.resource == 1); // check if condition was unlocked by 'checker1'
115	}