public static Rule BeGreaterThan <T>(T requirement) where T : IComparable <T>
{
if (requirement == null)
{
throw new ArgumentNullException("requirement");
}
return(MakeRule.That <T>(v => v.CompareTo(requirement) > 0)
.OrCreateArgumentOutOfRangeException()
.Because($"Value must be greater than {requirement}."));
}
public static Rule BeLessThanOrEqualTo <T>(T requirement) where T : IComparable <T>
{
if (requirement == null)
{
throw new ArgumentNullException("requirement");
}
return(MakeRule.That <T>(v => v.CompareTo(requirement) <= 0)
.OrCreateArgumentOutOfRangeException()
.Because($"Value must be less than or equal to {requirement}."));
}
public static Rule BeInRange <T>(T minimum, T maximum) where T : IComparable <T>
{
if (minimum == null)
{
throw new ArgumentNullException("minimum");
}
if (maximum == null)
{
throw new ArgumentNullException("maximum");
}
return(MakeRule.That <T>(v => v.CompareTo(minimum) >= 0 && v.CompareTo(maximum) <= 0)
.OrCreateArgumentOutOfRangeException()
.Because($"Value must range from {minimum} to {maximum}."));
}
public static Rule NotBeEmptyEnumerable <T>()
{
return(MakeRule.That <IEnumerable <T> >(e => e != null && e.Any())
.OrCreateArgumentException()
.Because("Enumeration cannot be null or empty."));
}
public static Rule NotBeDefault <T>() where T : IEquatable <T>
{
return(MakeRule.That <T>(v => v != null && !v.Equals(default(T)))
.OrCreateArgumentException()
.Because($"Value must be not be null or {default(T)}"));
}
public static Rule BeEqualTo <T>(T requirement)
{
return(MakeRule.That <T>(v => EqualityComparer <T> .Default.Equals(v, requirement))
.OrCreateArgumentException()
.Because($"Value must be equal to {requirement}."));
}
public static Rule NotContainElement <T>(T element)
{
return(MakeRule.That <IEnumerable <T> >(e => e != null && !e.Contains(element))
.OrCreateArgumentException()
.Because($"Enumeration cannot be null or contain {element}."));
}
public static Rule NotContainAnyNulls <T>()
{
return(MakeRule.That <IEnumerable <T> >(e => e != null && e.All(i => i != null))
.OrCreateArgumentException()
.Because("Enumeration cannot be null or contain any nulls."));
}
