public void Just_FMap_ReturnsNothing()
{
var just = new Just <string>("Hello");
var result = just.FMap <int>(a => Int32.Parse(a));
Assert.IsInstanceOf <Nothing <int> >(result);
}
public void Just_FMap_ReturnsJust()
{
var just = new Just<string>("42");
var result = just.FMap<int>(a => Int32.Parse(a));
Assert.IsInstanceOf<Just<int>>(result);
var actualResult = result as Just<int>;
Assert.AreEqual(42, actualResult.Value);
}
public void Just_FMap_ReturnsJust()
{
var just = new Just <string>("42");
var result = just.FMap <int>(a => Int32.Parse(a));
Assert.IsInstanceOf <Just <int> >(result);
var actualResult = result as Just <int>;
Assert.AreEqual(42, actualResult.Value);
}
public void Just_FMap_ReturnsNothing()
{
var just = new Just<string>("Hello");
var result = just.FMap<int>(a => Int32.Parse(a));
Assert.IsInstanceOf<Nothing<int>>(result);
}