struct Spectator::Matchers::ChangeFromMatcher(ExpressionType, FromType)
- Spectator::Matchers::ChangeFromMatcher(ExpressionType, FromType)
- Spectator::Matchers::Matcher
- Struct
- Value
- Object
Overview
Matcher that tests whether an expression changed from a specific value.
Defined in:
spectator/matchers/change_from_matcher.crConstructors
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.new(expression : Block(ExpressionType), expected : FromType)
Creates a new change matcher.
Instance Method Summary
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#by(amount)
Specifies what the resulting value of the expression should change by.
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#description : String
Short text about the matcher's purpose.
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#match(actual : Expression(T)) : MatchData forall T
Actually performs the test against the expression.
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#negated_match(actual : Expression(T)) : MatchData forall T
Performs the test against the expression, but inverted.
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#to(value)
Specifies what the resulting value of the expression must be.
Instance methods inherited from struct Spectator::Matchers::Matcher
===(actual : Expression(T)) : Bool===(other) : Bool ===, description : String description, initialize initialize, match(actual : Expression(T)) : MatchData forall T match, negated_match(actual : Expression(T)) : MatchData forall T negated_match
Constructor methods inherited from struct Spectator::Matchers::Matcher
new
new
Instance methods inherited from class Object
should(matcher : Spectator::Matchers::TypeMatcher(U), message = nil, *, _file = __FILE__, _line = __LINE__) forall Ushould(matcher, message = nil, *, _file = __FILE__, _line = __LINE__) should, should_eventually(matcher, message = nil, *, _file = __FILE__, _line = __LINE__) should_eventually, should_never(matcher, message = nil, *, _file = __FILE__, _line = __LINE__) should_never, should_not(matcher : Spectator::Matchers::TypeMatcher(U), message = nil, *, _file = __FILE__, _line = __LINE__) forall U
should_not(matcher : Spectator::Matchers::NilMatcher, message = nil, *, _file = __FILE__, _line = __LINE__)
should_not(matcher, message = nil, *, _file = __FILE__, _line = __LINE__) should_not
Constructor Detail
Creates a new change matcher.
Instance Method Detail
def description : String
#
Short text about the matcher's purpose. This explains what condition satisfies the matcher. The description is used when the one-liner syntax is used.
Actually performs the test against the expression.
Performs the test against the expression, but inverted.
A successful match with #match
should normally fail for this method, and vice-versa.