public void IComparable_Err_Transitive_Ok(bool useGenerics)
{
var a = SimpleResult.Err("test");
var b = SimpleResult.Err("test");
var c = SimpleResult.Err("test");
var a_obj = (object)a;
var b_obj = (object)b;
var c_obj = (object)c;
// act
var abResult = useGenerics
? a.CompareTo(b)
: a.CompareTo(b_obj);
var baResult = useGenerics
? b.CompareTo(a)
: b.CompareTo(a_obj);
var acResult = useGenerics
? a.CompareTo(c)
: a.CompareTo(c_obj);
// assert
Assert.Equal(0, abResult);
Assert.Equal(0, baResult);
Assert.Equal(0, acResult);
}
public void Implicit_Error_OK()
{
// act
var result = SimpleResult.Err("message");
// assert
Assert.True(result.IsErr);
Assert.False(result.IsOk);
}
public void Explicit_NullError_Ok()
{
// act
var result = SimpleResult.Err(null);
// assert
Assert.True(result.IsErr);
Assert.False(result.IsOk);
Assert.Null(result.UnsafelyUnwrapErr());
}
public static IEnumerable <object[]> GetUnequalPairs()
{
yield return(new[] { SimpleResult.Ok(7), SimpleResult.Ok(8) });
yield return(new[] { SimpleResult.Ok(1), SimpleResult.Err("error") });
yield return(new[] { SimpleResult.Err("err1"), SimpleResult.Ok(2) });
yield return(new[] { SimpleResult.Err("err1"), SimpleResult.Err("err2") });
}
public void Explicit_Error_Ok()
{
// act
var result = SimpleResult.Err("message");
// assert
Assert.True(result.IsErr);
Assert.False(result.IsOk);
Assert.Equal("message", (string)result);
}
public void UnwrapOrElse_Err_Ok()
{
// arrange
var r1 = SimpleResult.Err("error");
// act
var r = r1.UnwrapOrElse(err => 0);
// assert
Assert.Equal(0, r);
}
public void UnwrapError_AsValue_Throws()
{
// arrange
var result = SimpleResult.Err("something bad happened");
// act
// assert
Assert.True(result.IsErr);
Assert.False(result.IsOk);
Assert.Throws <InvalidOperationException>(() => result.UnsafelyUnwrap());
}
public void Or_ErrReturnsThat_Ok()
{
// arrange
var r1 = SimpleResult.Err("error");
var r2 = SimpleResult.Ok(0);
// act
var r = r1.Or(r2);
// assert
Assert.Equal(r2, r);
}
public void MapReturn_Err_Ok()
{
// arrange
var r1 = SimpleResult.Err("error");
// act
var r = r1.MapReturn(i => i.ToString(), "default");
// assert
Assert.NotNull(r);
Assert.Equal("default", r);
}
public void OrElse_Err()
{
// arrange
var r1 = SimpleResult.Err("error");
var r2 = SimpleResult.Ok(0);
// act
var r = r1.OrElse(() => r2);
// assert
Assert.Equal <SimpleResult>(r2, r);
}
public void And_ErrReturnsThis_Ok()
{
// arrange
var result = SimpleResult.Err("error");
var andResult = SimpleResult.Ok(0);
// act
var r = result.And(andResult);
// assert
Assert.Equal(result, r);
}
public void Bind_Err_Ok()
{
// arrange
var r1 = SimpleResult.Err("error");
// act
var r = r1.AndThen(i => Result <float, string> .Ok(3.7f));
// assert
Assert.NotNull(r);
Assert.True(r.IsErr);
Assert.Equal("error", r.UnsafelyUnwrapErr());
}
public void SelectErr_Ok()
{
// arrange
var r1 = SimpleResult.Err("error");
// act
var r = r1.SelectErr(error => error.ToUpperInvariant());
// assert
Assert.NotNull(r);
Assert.True(r.IsErr);
Assert.Equal("ERROR", r.UnsafelyUnwrapErr());
}
public void IComparable_Err_AtoA_Zero(bool useGenerics)
{
// arrange
var a = SimpleResult.Err("test");
var a_obj = (object)a;
// act
var result = useGenerics
? a.CompareTo(a)
: a.CompareTo(a_obj);
// assert
Assert.Equal(0, result);
}
public void IComparable_Err_Inverse_Ok(bool useGenerics)
{
var a = SimpleResult.Err("test");
var b = SimpleResult.Err("xyz");
var a_obj = (object)a;
var b_obj = (object)b;
// act
var abResult = useGenerics
? a.CompareTo(b)
: a.CompareTo(b_obj);
var baResult = useGenerics
? b.CompareTo(a)
: b.CompareTo(a_obj);
// assert
Assert.Equal(-1, abResult);
Assert.Equal(1, baResult);
}
public void IComparable_Err_Symmetry_Ok(bool useGenerics)
{
// arrange
var a = SimpleResult.Err("test");
var a_obj = (object)a;
var b = SimpleResult.Err("test");
var b_obj = (object)b;
// act
var abResult = useGenerics
? a.CompareTo(b)
: a.CompareTo(b_obj);
var baResult = useGenerics
? b.CompareTo(a)
: b.CompareTo(a_obj);
// assert
Assert.Equal(0, abResult);
Assert.Equal(0, baResult);
}
public static IEnumerable <object[]> GetResultTheoryData1()
{
yield return(new object[] { SimpleResult.Ok(7) });
yield return(new object[] { SimpleResult.Err("test") });
}
public static IEnumerable <object[]> GetToStringTests()
{
yield return(new object[] { SimpleResult.Ok(7), $"Ok<{7.GetType().Name}>[7]" });
yield return(new object[] { SimpleResult.Err("error"), $"Err<{"error".GetType().Name}>[error]" });
}