tests/TestTimeConstraintMacro.cpp

#include "UnitTest++/UnitTestPP.h"
#include "UnitTest++/TimeHelpers.h"

#include "RecordingReporter.h"
#include "ScopedCurrentTest.h"

namespace {

TEST(TimeConstraintMacroQualifiesNamespace)
{
    // If this compiles without a "using namespace UnitTest;", all is well.
    UNITTEST_TIME_CONSTRAINT(1);
}

TEST(TimeConstraintMacroUsesCorrectInfo)
{
    int testLine = 0;
    RecordingReporter reporter;

    {
      UnitTest::TestResults testResults(&reporter);
      ScopedCurrentTest scopedResults(testResults);

      UNITTEST_TIME_CONSTRAINT(10);  testLine = __LINE__;
      UnitTest::TimeHelpers::SleepMs(20);
    }

    using namespace std;

    CHECK_EQUAL(1, reporter.testFailedCount);
    CHECK(strstr(reporter.lastFailedFile, __FILE__));
    CHECK_EQUAL(testLine, reporter.lastFailedLine);
    CHECK(strstr(reporter.lastFailedTest, "TimeConstraintMacroUsesCorrectInfo"));
}

TEST(TimeConstraintMacroComparesAgainstPreciseActual)
{
    int testLine = 0;
    RecordingReporter reporter;

	{
		UnitTest::TestResults testResults(&reporter);
		ScopedCurrentTest scopedResults(testResults);

		UNITTEST_TIME_CONSTRAINT(1);  testLine = __LINE__;

		// start a new timer and run until we're as little over the 1 msec
		// threshold as we can achieve; this should guarantee that the "test"
		// runs in some very small amount of time > 1 msec
		UnitTest::Timer myTimer;
		myTimer.Start();

		while (myTimer.GetTimeInMs() < 1.001)
			UnitTest::TimeHelpers::SleepMs(0);
	}

    using namespace std;

    CHECK_EQUAL(1, reporter.testFailedCount);
    CHECK(strstr(reporter.lastFailedFile, __FILE__));
    CHECK_EQUAL(testLine, reporter.lastFailedLine);
    CHECK(strstr(reporter.lastFailedTest, "TimeConstraintMacroComparesAgainstPreciseActual"));
}

struct EmptyFixture {};

TEST_FIXTURE(EmptyFixture, TimeConstraintMacroWorksInFixtures)
{
    int testLine = 0;
    RecordingReporter reporter;

    {
      UnitTest::TestResults testResults(&reporter);
      ScopedCurrentTest scopedResults(testResults);

      UNITTEST_TIME_CONSTRAINT(10);  testLine = __LINE__;
      UnitTest::TimeHelpers::SleepMs(20);
    }

    using namespace std;

    CHECK_EQUAL(1, reporter.testFailedCount);
    CHECK(strstr(reporter.lastFailedFile, __FILE__));
    CHECK_EQUAL(testLine, reporter.lastFailedLine);
    CHECK(strstr(reporter.lastFailedTest, "TimeConstraintMacroWorksInFixtures"));
} 

}