public void StringifiesValueMonadCorrectly()
{
var monad = new ValueMonad <Int32>(2020);
var visitor = new StringifierVisitor <Int32>();
var stringifyRes = monad.Accept(visitor);
Assert.IsNotNull(stringifyRes);
Assert.IsTrue(stringifyRes.Contains("2020", StringComparison.InvariantCultureIgnoreCase));
Assert.IsTrue(stringifyRes.Contains("value", StringComparison.InvariantCultureIgnoreCase));
}
public void DifferentReturnStringValueIsNotEqual()
{
var value = "SomeVal";
var monad = new ValueMonad <String>(value);
var asserterVisitor = new AssertValueVisitor <String>
{
ExpectedValue = "SomeOtherVal",
AreEqual = false
};
monad.Accept(asserterVisitor);
}
public void ReturnStringValueIsEqual()
{
var value = "SomeVal";
var monad = new ValueMonad <String>(value);
var asserterVisitor = new AssertValueVisitor <String>
{
ExpectedValue = value,
AreEqual = true
};
monad.Accept(asserterVisitor);
}
public void DifferentReturnIntValueIsNotEqual()
{
var value = 2020;
var monad = new ValueMonad <Int32>(value);
var asserterVisitor = new AssertValueVisitor <Int32>
{
ExpectedValue = 0,
AreEqual = false
};
monad.Accept(asserterVisitor);
}
public void ReturnIntValueIsEqual()
{
var value = 2020;
var monad = new ValueMonad <Int32>(value);
var asserterVisitor = new AssertValueVisitor <Int32>
{
ExpectedValue = value,
AreEqual = true
};
monad.Accept(asserterVisitor);
}
public void BindReturnsTheSecondValueOFDifferentType()
{
var firstVal = 1;
var firstMonad = new ValueMonad <Int32>(firstVal);
var secondMonad = firstMonad.Bind(val => new ValueMonad <String>($"First val is: {val}."));
var asserterVisitor = new AssertValueVisitor <String>
{
ExpectedValue = "First val is: 1.",
AreEqual = true
};
secondMonad.Accept(asserterVisitor);
}
public void BindDoesntReturnADifferentValue()
{
var firstVal = 1;
var firstMonad = new ValueMonad <Int32>(firstVal);
var secondMonad = firstMonad.Bind(val => new ValueMonad <Int32>(val + 1));
var asserterVisitor = new AssertValueVisitor <Int32>
{
ExpectedValue = 0,
AreEqual = false
};
secondMonad.Accept(asserterVisitor);
}
public void BindReturnsTheSecondValue()
{
var firstVal = 1;
var firstMonad = new ValueMonad <Int32>(firstVal);
var secondMonad = firstMonad.Bind(val => new ValueMonad <Int32>(val + 1));
var asserterVisitor = new AssertValueVisitor <Int32>
{
ExpectedValue = firstVal + 1,
AreEqual = true
};
secondMonad.Accept(asserterVisitor);
}