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	schoenebeck	63	#include "ConditionTest.h"
2
3			#include <iostream>
4
5			CPPUNIT_TEST_SUITE_REGISTRATION(ConditionTest);
6
7	schoenebeck	211	using namespace std;
8	schoenebeck	63
9	schoenebeck	211
10	schoenebeck	63	// 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	schoenebeck	211	void ConditionTest::printTestSuiteName() {
56			cout << "\b \nRunning Condition Tests: " << flush;
57			}
58
59	schoenebeck	63	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			}