Assertions – Quick Reference

Basic Assertions

Assertion	Description
IsEqualTo	Checks if actual is equal to expected
IsNotEqualTo	Checks if actual is different from expected
IsTrue	Checks if actual evaluates to True
IsFalse	Checks if actual evaluates to False
IsNone	Checks if actual is None
IsNotNone	Checks if actual is not None

Assertion	Description
IsEmpty	Checks if a collection is empty
IsNotEmpty	Checks if a collection is not empty
HasLength	Checks if a collection has a specific length
Contains	Checks if a value exists in a collection
DoesNotContain	Checks if a value does not exist in a collection
ContainsAll	Checks if all expected values exist in a collection
ContainsAny	Checks if at least one expected value exists in a collection
HasSubset	Checks if expected values are a subset of actual

Assertion	Description
IsGreaterThan	Checks if actual is greater than expected
IsLessThan	Checks if actual is less than expected
IsBetween	Checks if actual is within a range (inclusive)
IsCloseTo	Checks if actual is within a tolerance of a value

Assertion	Description
StartsWith	Checks if actual starts with a prefix
EndsWith	Checks if actual ends with a suffix
MatchesRegex	Checks if actual matches a regular expression
IsBlank	Checks if string is empty or whitespace
IsNotBlank	Checks if string is not empty or whitespace

Assertion	Description
HasChanged	Checks if value changed from a previous value
HasNotChanged	Checks if value did not change from a previous value

Assertion	Description
Satisfies	Checks if actual satisfies a custom condition
IsSortedAs	Checks if actual matches expected order
HasKeyValue	Checks if a dictionary contains a key-value pair