co♻e: unittest framework for CODESYS

FUNCTION_BLOCK FB_Sum_Test EXTENDS CfUnit.FB_TestSuite

TwoPlusTwoEqualsFour();
ZeroPlusZeroEqualsZero();

METHOD TwoPlusTwoEqualsFour: 
VAR
    Sum: FB_Sum;
    Result: UINT;
    ExpectedSum: UINT;
END_VAR

TEST('TwoPlusTwoEqualsFour');

Sum(one := 2, two := 2, result => Result);

AssertEquals(Expected := ExpectedSum,
             Actual := Result,
             Message := 'The calculation is not correct');

TEST_FINISHED();

METHOD ZeroPlusZeroEqualsZero: 
VAR
    Sum: FB_Sum;
    Result: UINT;
    ExpectedSum: UINT;
END_VAR

TEST('ZeroPlusZeroEqualsZero');

Sum(one := 0, two := 0, result => Result);

AssertEquals(Expected := ExpectedSum,
             Actual := Result,
             Message := 'The calculation is not correct');

TEST_FINISHED();

PROGRAM PRG_TEST
VAR
    fbSum_Test: FB_Sum_Test;
END_VAR

CfUnit.RUN();

FUNCTION_BLOCK FB_Sum
VAR_INPUT
    one: UINT;
    two: UINT;
END_VAR
VAR_OUTPUT
    result: UINT;
END_VAR

result := one + two;