/// <summary>
/// Checks if an object is an instance of a specified type.
/// </summary>
/// <param name="check">checker logic object</param>
/// <param name="type">expected type</param>
/// <typeparam name="T">type of checked object</typeparam>
/// <returns>A check link</returns>
public static ICheckLink <ICheck <T> > IsInstanceOfType <T>(this ICheck <T> check, Type type)
{
ExtensibilityHelper.BeginCheck(check)
.Analyze((sut, test) =>
{
var reflectionSut = sut as ReflectionWrapper;
if (reflectionSut != null)
{
var expectedWrapper = ReflectionWrapper.BuildFromType(type, reflectionSut.Criteria);
expectedWrapper.MapFields(reflectionSut, 1, (expected, actual, depth) =>
{
if (actual != null && expected != null && actual.ValueType != expected.ValueType)
{
if (actual.ValueType.IsPrimitive() || expected.ValueType.IsPrimitive())
{
test.GetSutProperty(_ => actual.Value, actual.MemberLabel)
.Fails("The {0} is of a different type than the {1}.")
.ExpectingType(expected.ValueType, "", "");
return(false);
}
return(true);
}
if (actual != null && expected != null && expected.ValueType == actual.ValueType)
{
return(false);
}
if (actual == null)
{
test.GetSutProperty(_ => expectedWrapper.Value, expected.MemberLabel)
.Expecting(expected)
.Fails("The {1} is absent from the {0}.", MessageOption.NoCheckedBlock);
}
else
{
test.GetSutProperty(_ => actual, actual.MemberLabel.DoubleCurlyBraces())
.Fails("The {0} is absent from the {1}.");
}
return(false);
});
}
else if (typeof(T).IsNullable())
{
test.FailsIf(sut2 => typeof(T) != type || (sut2 == null && !typeof(T).IsNullable()),
$"The {{0}} is not an instance of [{type.ToStringProperlyFormatted()}].", MessageOption.WithType);
}
else
{
test.FailsIf(sut2 => sut2.GetTypeWithoutThrowingException() != type,
$"The {{0}} is not an instance of [{type.ToStringProperlyFormatted()}].", sut != null ? MessageOption.WithType : MessageOption.None);
}
})
.ExpectingType(type, "", "different from")
.Negates($"The {{0}} is an instance of [{type.ToStringProperlyFormatted()}] whereas it must not.", MessageOption.WithType)
.EndCheck();
return(ExtensibilityHelper.BuildCheckLink(check));
}
/// <summary>
/// Checks if an object is an instance of a specified type.
/// </summary>
/// <param name="check">checker logic object</param>
/// <param name="type">expected type</param>
/// <typeparam name="T">type of checked object</typeparam>
/// <returns>A check link</returns>
public static ICheckLink <ICheck <T> > IsInstanceOfType <T>(this ICheck <T> check, Type type)
{
ExtensibilityHelper.BeginCheck(check).
FailWhen(sut => sut == null && typeof(T) == type && typeof(T).IsNullable(), $"The {{checked}} does not have a value.").
FailWhen(sut => sut == null, $"The {{checked}} is not an instance of [{type.ToStringProperlyFormatted()}].").
Analyze((sut, test) =>
{
if (sut is ReflectionWrapper reflectionSut)
{
var expectedWrapper = ReflectionWrapper.BuildFromType(type, reflectionSut.Criteria);
expectedWrapper.MapFields(reflectionSut, 1, (expected, actual, depth) =>
{
if (actual == null)
{
test.CheckSutAttributes(_ => expectedWrapper.Value, expected.MemberLabel)
.DefineExpectedValue(expected)
.Fail("The {1} is absent from the {0}.", MessageOption.NoCheckedBlock);
}
else if (expected == null)
{
test.CheckSutAttributes(_ => actual, actual.MemberLabel.DoubleCurlyBraces())
.Fail("The {0} is absent from the {1}.");
}
else if (actual.ValueType != expected.ValueType)
{
if (!actual.ValueType.IsPrimitive() && !expected.ValueType.IsPrimitive())
{
return(true);
}
test.CheckSutAttributes(_ => actual.Value, actual.MemberLabel)
.Fail("The {0} is of a different type than the {1}.")
.DefineExpectedType(expected.ValueType);
}
return(false);
});
}
else
{
test.FailWhen(sut2 => sut2.GetTypeWithoutThrowingException() != type,
$"The {{0}} is not an instance of [{type.ToStringProperlyFormatted()}].",
MessageOption.WithType);
}
})
.DefineExpectedType(type)
.OnNegate($"The {{0}} is an instance of [{type.ToStringProperlyFormatted()}] whereas it must not.", MessageOption.WithType)
.EndCheck();
return(ExtensibilityHelper.BuildCheckLink(check));
}
