mspec/lib/mspec/matchers/be_true.rb
class BeTrueMatcher
def matches?(actual)
@actual = actual
@actual == true
end
def failure_message
["Expected #{@actual.inspect}", "to be true"]
end
def negative_failure_message
["Expected #{@actual.inspect}", "not to be true"]
end
end
class Object
def be_true
BeTrueMatcher.new
end
end