public void True_for_nullable_boolean_returns_true()
{
bool?expected = true;
var actual = BindingResult.True <bool?>();
AssertSome(expected, actual);
}
public void False_for_nullable_boolean_returns_false()
{
bool?expected = false;
var actual = BindingResult.False <bool?>();
AssertSome(expected, actual);
}
public void From_nullable_creates_instance_with_some_when_value_is_not_null()
{
int?value = 42;
var actual = BindingResult.FromNullable(value);
AssertSome(value.Value, actual);
}
public void From_nullable_creates_instance_with_none_when_value_is_null()
{
int?value = null;
var actual = BindingResult.FromNullable(value);
AssertNone(actual);
}
public void Some_value_can_be_null_for_nullable_value_types()
{
int?value = null;
var actual = BindingResult.Some(value);
AssertSome(value, actual);
}
public void Some_value_can_be_null_for_ref_types()
{
object value = null;
var actual = BindingResult.Some(value);
AssertSome(value, actual);
}
public void Some_creates_instance_with_given_value()
{
var value = "foo";
var actual = BindingResult.Some(value);
AssertSome(value, actual);
}
public void Ctor_correctly_initializes_members()
{
var value = "Foo";
var actual = new BindingResult <string>(value);
Assert.True(actual.HasValue);
Assert.Same(value, actual.Value);
}
public void Ctor_correctly_initializes_members()
{
var expectedOldResult = BindingResult.Some(42);
var expectedNewResult = BindingResult.Some(84);
var actual = new BindingResultChange <int>(expectedOldResult, expectedNewResult);
AssertEx.Equal(expectedOldResult, actual.OldResult);
AssertEx.Equal(expectedNewResult, actual.NewResult);
}
public void Implements_equality_contract()
{
EqualityContract.Assert(
equivalent: new[]
{
new BindingResultChange <int>(BindingResult.Some(0), BindingResult.Some(1)),
new BindingResultChange <int>(BindingResult.Some(0), BindingResult.Some(1))
},
distinct: new[]
{
new BindingResultChange <int>(BindingResult.Some(0), BindingResult.Some(1)),
new BindingResultChange <int>(BindingResult.Some(1), BindingResult.Some(1)),
new BindingResultChange <int>(BindingResult.Some(0), BindingResult.Some(0)),
new BindingResultChange <int>(BindingResult.None <int>(), BindingResult.Some(1)),
new BindingResultChange <int>(BindingResult.Some(0), BindingResult.None <int>())
});
}
/// <inheritdoc />
public bool Equals(BindingResult <T> other)
{
return(HasValue == other.HasValue && (!HasValue || ValueComparer.Equals(_value, other._value)));
}
private static void AssertNone <T>(BindingResult <T> actual)
{
Assert.False(actual.HasValue);
}
private static void AssertSome <T>(T expected, BindingResult <T> actual)
{
Assert.True(actual.HasValue);
Assert.Equal(expected, actual.Value);
}
public void True_and_false_for_non_boolean_type_throws()
{
// We are not concerned with the exact exception type, only that it throws.
Assert.ThrowsAny <Exception>(() => BindingResult.True <int>());
Assert.ThrowsAny <Exception>(() => BindingResult.False <long>());
}
public void None_creates_instance_with_no_value()
{
var actual = BindingResult.None <string>();
AssertNone(actual);
}
/// <summary>
/// Initializes a new instance of the <see cref="BindingResultChange{T}"/> structure.
/// </summary>
/// <param name="oldResult">The old binding result.</param>
/// <param name="newResult">The new binding result.</param>
public BindingResultChange(BindingResult <T> oldResult, BindingResult <T> newResult)
{
OldResult = oldResult;
NewResult = newResult;
}