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#include "UnitTest++/UnitTestPP.h"
#include "RecordingReporter.h"
#include "UnitTest++/ReportAssert.h"
#include "UnitTest++/TestList.h"
#include "UnitTest++/TimeHelpers.h"
#include "UnitTest++/TimeConstraint.h"
#include "UnitTest++/ReportAssertImpl.h"

using namespace UnitTest;

namespace
{
    
    struct MockTest : public Test
    {
        MockTest(char const* testName, bool const success_, bool const assert_, int const count_ = 1)
        : Test(testName)
        , success(success_)
        , asserted(assert_)
        , count(count_)
        {
        }
        
        virtual void RunImpl() const
        {
            TestResults& testResults_ = *CurrentTest::Results();

            for (int i=0; i < count; ++i)
            {
                if (asserted)
                {
                    ReportAssert("desc", "file", 0);
                }
                else if (!success)
                {
                    testResults_.OnTestFailure(m_details, "message");
                }
            }
        }
        
        bool const success;
        bool const asserted;
        int const count;
    };
    
    struct FixtureBase
    {
        FixtureBase()
        : runner(reporter)
        {
        }

        template <class Predicate>
        int RunTestsIf(TestList const& list, char const* suiteName,
                       const Predicate& predicate, int maxTestTimeInMs)
        {
            TestResults* oldResults = CurrentTest::Results();
            const TestDetails* oldDetails = CurrentTest::Details();
            int result = runner.RunTestsIf(list, suiteName, predicate, maxTestTimeInMs);
            CurrentTest::Results() = oldResults;
            CurrentTest::Details() = oldDetails;
            return result;
        }

        TestRunner runner;
        RecordingReporter reporter;
    };
    
    struct TestRunnerFixture : public FixtureBase
    {
        TestList list;
    };
    
    TEST_FIXTURE(TestRunnerFixture, TestStartIsReportedCorrectly)
    {
        MockTest test("goodtest", true, false);
        list.Add(&test);
        
        RunTestsIf(list, NULL, True(), 0);
        CHECK_EQUAL(1, reporter.testRunCount);
        CHECK_EQUAL("goodtest", reporter.lastStartedTest);
    }
    
    TEST_FIXTURE(TestRunnerFixture, TestFinishIsReportedCorrectly)
    {
        MockTest test("goodtest", true, false);
        list.Add(&test);
        
        RunTestsIf(list, NULL, True(), 0);
        CHECK_EQUAL(1, reporter.testFinishedCount);
        CHECK_EQUAL("goodtest", reporter.lastFinishedTest);
    }
    
    class SlowTest : public Test
    {
    public:
        SlowTest()
        : Test("slow", "somesuite", "filename", 123)
        {
        }
        
        virtual void RunImpl() const
        {
            TimeHelpers::SleepMs(20);
        }
    };
    
    TEST_FIXTURE(TestRunnerFixture, TestFinishIsCalledWithCorrectTime)
    {
        SlowTest test;
        list.Add(&test);
        
        RunTestsIf(list, NULL, True(), 0);
        CHECK(reporter.lastFinishedTestTime >= 0.005f && reporter.lastFinishedTestTime <= 0.050f);
    }
    
    TEST_FIXTURE(TestRunnerFixture, FailureCountIsZeroWhenNoTestsAreRun)
    {
        CHECK_EQUAL(0, RunTestsIf(list, NULL, True(), 0));
        CHECK_EQUAL(0, reporter.testRunCount);
        CHECK_EQUAL(0, reporter.testFailedCount);
    }
    
    TEST_FIXTURE(TestRunnerFixture, CallsReportFailureOncePerFailingTest)
    {
        MockTest test1("test", false, false);
        list.Add(&test1);
        MockTest test2("test", true, false);
        list.Add(&test2);
        MockTest test3("test", false, false);
        list.Add(&test3);
        
        CHECK_EQUAL(2, RunTestsIf(list, NULL, True(), 0));
        CHECK_EQUAL(2, reporter.testFailedCount);
    }
    
    TEST_FIXTURE(TestRunnerFixture, TestsThatAssertAreReportedAsFailing)
    {
        MockTest test("test", true, true);
        list.Add(&test);
        
        RunTestsIf(list, NULL, True(), 0);
        CHECK_EQUAL(1, reporter.testFailedCount);
    }
    
    
    TEST_FIXTURE(TestRunnerFixture, ReporterNotifiedOfTestCount)
    {
        MockTest test1("test", true, false);
        MockTest test2("test", true, false);
        MockTest test3("test", true, false);
        list.Add(&test1);
        list.Add(&test2);
        list.Add(&test3);
        
        RunTestsIf(list, NULL, True(), 0);
        CHECK_EQUAL(3, reporter.summaryTotalTestCount);
    }
    
    TEST_FIXTURE(TestRunnerFixture, ReporterNotifiedOfFailedTests)
    {
        MockTest test1("test", false, false, 2);
        MockTest test2("test", true, false);
        MockTest test3("test", false, false, 3);
        list.Add(&test1);
        list.Add(&test2);
        list.Add(&test3);
        
        RunTestsIf(list, NULL, True(), 0);
        CHECK_EQUAL(2, reporter.summaryFailedTestCount);
    }
    
    TEST_FIXTURE(TestRunnerFixture, ReporterNotifiedOfFailures)
    {
        MockTest test1("test", false, false, 2);
        MockTest test2("test", true, false);
        MockTest test3("test", false, false, 3);
        list.Add(&test1);
        list.Add(&test2);
        list.Add(&test3);
        
        RunTestsIf(list, NULL, True(), 0);
        CHECK_EQUAL(5, reporter.summaryFailureCount);
    }
    
    TEST_FIXTURE(TestRunnerFixture, SlowTestPassesForHighTimeThreshold)
    {
        SlowTest test;
        list.Add(&test);
        
        RunTestsIf(list, NULL, True(), 0);
        CHECK_EQUAL(0, reporter.testFailedCount);
    }
    
    TEST_FIXTURE(TestRunnerFixture, SlowTestFailsForLowTimeThreshold)
    {
        SlowTest test;
        list.Add(&test);
        
        RunTestsIf(list, NULL, True(), 3);
        CHECK_EQUAL(1, reporter.testFailedCount);
    }
    
    TEST_FIXTURE(TestRunnerFixture, SlowTestHasCorrectFailureInformation)
    {
        SlowTest test;
        list.Add(&test);
        
        RunTestsIf(list, NULL, True(), 3);
        
        using namespace std;
        
        CHECK_EQUAL(test.m_details.testName, reporter.lastFailedTest);
        CHECK(strstr(test.m_details.filename, reporter.lastFailedFile));
        CHECK_EQUAL(test.m_details.lineNumber, reporter.lastFailedLine);
        
        CHECK(strstr(reporter.lastFailedMessage, "Global time constraint failed"));
        CHECK(strstr(reporter.lastFailedMessage, "3ms"));
    }
    
    TEST_FIXTURE(TestRunnerFixture, SlowTestWithTimeExemptionPasses)
    {
        class SlowExemptedTest : public Test
        {
        public:
            SlowExemptedTest() : Test("slowexempted", "", 0) {}
            virtual void RunImpl() const
            {
                UNITTEST_TIME_CONSTRAINT_EXEMPT();
                TimeHelpers::SleepMs(20);
            }
        };
        
        SlowExemptedTest test;
        list.Add(&test);
        
        RunTestsIf(list, NULL, True(), 3);
        CHECK_EQUAL(0, reporter.testFailedCount);
    }
    
    struct TestSuiteFixture : FixtureBase
    {
        TestSuiteFixture()
        : test1("TestInDefaultSuite")
        , test2("TestInOtherSuite", "OtherSuite")
        , test3("SecondTestInDefaultSuite")
        {
            list.Add(&test1);
            list.Add(&test2);
        }
        
        Test test1;
        Test test2;
        Test test3;
        TestList list;
    };
    
    TEST_FIXTURE(TestSuiteFixture, TestRunnerRunsAllSuitesIfNullSuiteIsPassed)
    {
        RunTestsIf(list, NULL, True(), 0);
        CHECK_EQUAL(2, reporter.summaryTotalTestCount);
    }
    
    TEST_FIXTURE(TestSuiteFixture,TestRunnerRunsOnlySpecifiedSuite)
    {
        RunTestsIf(list, "OtherSuite", True(), 0);
        CHECK_EQUAL(1, reporter.summaryTotalTestCount);
        CHECK_EQUAL("TestInOtherSuite", reporter.lastFinishedTest);
    }
    
    struct RunTestIfNameIs
    {
        RunTestIfNameIs(char const* name_)
        : name(name_)
        {
        }
        
        bool operator()(const Test* const test) const
        {
            using namespace std;
            return (0 == strcmp(test->m_details.testName, name));
        }
        
        char const* name;
    };
    
    TEST(TestMockPredicateBehavesCorrectly)
    {
        RunTestIfNameIs predicate("pass");
        
        Test pass("pass");
        Test fail("fail");
        
        CHECK(predicate(&pass));
        CHECK(!predicate(&fail));   
    }
    
    TEST_FIXTURE(TestRunnerFixture, TestRunnerRunsTestsThatPassPredicate)
    {
        Test should_run("goodtest");
        list.Add(&should_run);
        
        Test should_not_run("badtest");
        list.Add(&should_not_run);
        
        RunTestsIf(list, NULL, RunTestIfNameIs("goodtest"), 0);
        CHECK_EQUAL(1, reporter.testRunCount);
        CHECK_EQUAL("goodtest", reporter.lastStartedTest);
    }
    
    TEST_FIXTURE(TestRunnerFixture, TestRunnerOnlyRunsTestsInSpecifiedSuiteAndThatPassPredicate)
    {
        Test runningTest1("goodtest", "suite");
        Test skippedTest2("goodtest");
        Test skippedTest3("badtest", "suite");
        Test skippedTest4("badtest");
        
        list.Add(&runningTest1);
        list.Add(&skippedTest2);
        list.Add(&skippedTest3);
        list.Add(&skippedTest4);
        
        RunTestsIf(list, "suite", RunTestIfNameIs("goodtest"), 0);
        
        CHECK_EQUAL(1, reporter.testRunCount);
        CHECK_EQUAL("goodtest", reporter.lastStartedTest);
        CHECK_EQUAL("suite", reporter.lastStartedSuite);
    }
    
}