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, false, 0, -4) {
    resource = 0;
    this->waitFor = waitFor;
}

int ConditionTest::ConditionChecker::Main() {
    condition.WaitAndUnlockIf(!waitFor);
    resource++;
    return 0;
}


// ConditionSetter

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

int ConditionTest::ConditionSetter::Main() {
    condition->Set(toSet);
    resource++;
    return 0;
}


// 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
                TestCancel();
        }
    staticcondition.Unlock();
    return 0;
}


// 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, false, 0, -4) {
13	resource = 0;
14	this->waitFor = waitFor;
15	}
16
17	int ConditionTest::ConditionChecker::Main() {
18	condition.WaitAndUnlockIf(!waitFor);
19	resource++;
20	return 0;
21	}
22
23
24	// ConditionSetter
25
26	ConditionTest::ConditionSetter::ConditionSetter(Condition* condition, bool toSet) : Thread(false, false, 0, -4) {
27	resource = 0;
28	this->toSet = toSet;
29	this->condition = condition;
30	}
31
32	int ConditionTest::ConditionSetter::Main() {
33	condition->Set(toSet);
34	resource++;
35	return 0;
36	}
37
38
39	// ConditionCheckerLocking
40
41	Condition ConditionTest::ConditionCheckerLocking::staticcondition; // we sheare the same Condition object between all instances of ConditionCheckerLocking
42
43	ConditionTest::ConditionCheckerLocking::ConditionCheckerLocking(bool waitFor) : ConditionChecker(waitFor) {
44	doUnlock = false;
45	}
46
47	int ConditionTest::ConditionCheckerLocking::Main() {
48	staticcondition.WaitIf(!waitFor);
49	resource++;
50	while (!doUnlock) {
51	usleep(1000); // sleep until ordered to unlock the condition again
52	TestCancel();
53	}
54	staticcondition.Unlock();
55	return 0;
56	}
57
58
59	// ConditionTest
60
61	void ConditionTest::printTestSuiteName() {
62	cout << "\b \nRunning Condition Tests: " << flush;
63	}
64
65	void ConditionTest::setUp() {
66	}
67
68	void ConditionTest::tearDown() {
69	}
70
71
72	// Check if Condition class doesn't block if desired condition is already reached
73	void ConditionTest::testDoesntBlockOnDesiredCondtion() {
74	ConditionChecker t(false);
75	t.SignalStartThread();
76	usleep(200000); // wait 200ms
77	CPPUNIT_ASSERT(t.resource == 1);
78	}
79
80	// Check if Condition class blocks if desired condition is not alredy reached
81	void ConditionTest::testBlocksIfNotDesiredCondition() {
82	ConditionChecker t(true);
83	t.SignalStartThread();
84	usleep(400000); // wait 400ms
85	CPPUNIT_ASSERT(t.resource == 0);
86	}
87
88	// Check if Condition class blocks until desired condition is reached
89	void ConditionTest::testBlocksUntilDesiredCondition() {
90	ConditionChecker checker(true); // let that thread wait until condition equals 'true'
91	ConditionSetter setter(&checker.condition, true); // let this thread set the condition to 'true'
92	checker.SignalStartThread();
93	usleep(50000); // wait 50ms
94	CPPUNIT_ASSERT(checker.resource == 0); // check if 'checker' thread has not passed the WaitAndUnlockIf() point yet
95	setter.SignalStartThread();
96	usleep(100000); // wait 100ms
97	CPPUNIT_ASSERT(checker.resource == 1); // check if 'checker' thread passed the WaitAndUnlockIf() point
98	}
99
100	// Check if the WaitIf() call blocks concurrent threads until the first WaitIf() caller calls Unlock()
101	void ConditionTest::testWaitIFBlocksConcurrentThread() {
102	// if the following three tests fail, then it doesn't make sense to continue with the actual one here
103	testDoesntBlockOnDesiredCondtion();
104	testBlocksIfNotDesiredCondition();
105	testBlocksUntilDesiredCondition();
106
107	// actual new test
108	ConditionCheckerLocking checker1(false);
109	ConditionCheckerLocking checker2(false);
110	checker1.SignalStartThread();
111	usleep(200000); // wait 200ms
112	CPPUNIT_ASSERT(checker1.resource == 1);
113	checker2.SignalStartThread();
114	usleep(200000); // wait 200ms
115	CPPUNIT_ASSERT(checker2.resource == 0); // check if condition locked by 'checker1'
116
117	// now order 'checker1' thread to Unlock() the condition again
118	checker1.doUnlock = true;
119	usleep(200000); // wait 200ms
120	CPPUNIT_ASSERT(checker2.resource == 1); // check if condition was unlocked by 'checker1'
121	}