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|
module RSpec
module Mocks
# ArgumentMatchers are placeholders that you can include in message
# expectations to match arguments against a broader check than simple
# equality.
#
# With the exception of `any_args` and `no_args`, they all match against
# the arg in same position in the argument list.
#
# @see ArgumentListMatcher
module ArgumentMatchers
class AnyArgsMatcher
def description
"any args"
end
end
class AnyArgMatcher
def initialize(ignore)
end
def ==(other)
true
end
end
class NoArgsMatcher
def description
"no args"
end
end
class RegexpMatcher
def initialize(regexp)
@regexp = regexp
end
def ==(value)
Regexp === value ? value == @regexp : value =~ @regexp
end
end
class BooleanMatcher
def initialize(ignore)
end
def ==(value)
[true,false].include?(value)
end
end
class HashIncludingMatcher
def initialize(expected)
@expected = expected
end
def ==(actual)
@expected.all? {|k,v| actual.has_key?(k) && v == actual[k]}
rescue NoMethodError
false
end
def description
"hash_including(#{@expected.inspect.sub(/^\{/,"").sub(/\}$/,"")})"
end
end
class HashExcludingMatcher
def initialize(expected)
@expected = expected
end
def ==(actual)
@expected.none? {|k,v| actual.has_key?(k) && v == actual[k]}
rescue NoMethodError
false
end
def description
"hash_not_including(#{@expected.inspect.sub(/^\{/,"").sub(/\}$/,"")})"
end
end
class DuckTypeMatcher
def initialize(*methods_to_respond_to)
@methods_to_respond_to = methods_to_respond_to
end
def ==(value)
@methods_to_respond_to.all? {|message| value.respond_to?(message)}
end
end
class MatcherMatcher
def initialize(matcher)
@matcher = matcher
end
def ==(value)
@matcher.matches?(value)
end
end
class EqualityProxy
def initialize(given)
@given = given
end
def ==(expected)
@given == expected
end
end
class InstanceOf
def initialize(klass)
@klass = klass
end
def ==(actual)
actual.instance_of?(@klass)
end
end
class KindOf
def initialize(klass)
@klass = klass
end
def ==(actual)
actual.kind_of?(@klass)
end
end
# Matches any args at all. Supports a more explicit variation of
# `object.should_receive(:message)`
#
# @example
#
# object.should_receive(:message).with(any_args)
def any_args
AnyArgsMatcher.new
end
# Matches any argument at all.
#
# @example
#
# object.should_receive(:message).with(anything)
def anything
AnyArgMatcher.new(nil)
end
# Matches no arguments.
#
# @example
#
# object.should_receive(:message).with(no_args)
def no_args
NoArgsMatcher.new
end
# Matches if the actual argument responds to the specified messages.
#
# @example
#
# object.should_receive(:message).with(duck_type(:hello))
# object.should_receive(:message).with(duck_type(:hello, :goodbye))
def duck_type(*args)
DuckTypeMatcher.new(*args)
end
# Matches a boolean value.
#
# @example
#
# object.should_receive(:message).with(boolean())
def boolean
BooleanMatcher.new(nil)
end
# Matches a hash that includes the specified key(s) or key/value pairs.
# Ignores any additional keys.
#
# @example
#
# object.should_receive(:message).with(hash_including(:key => val))
# object.should_receive(:message).with(hash_including(:key))
# object.should_receive(:message).with(hash_including(:key, :key2 => val2))
def hash_including(*args)
HashIncludingMatcher.new(anythingize_lonely_keys(*args))
end
# Matches a hash that doesn't include the specified key(s) or key/value.
#
# @example
#
# object.should_receive(:message).with(hash_excluding(:key => val))
# object.should_receive(:message).with(hash_excluding(:key))
# object.should_receive(:message).with(hash_excluding(:key, :key2 => :val2))
def hash_excluding(*args)
HashExcludingMatcher.new(anythingize_lonely_keys(*args))
end
alias_method :hash_not_including, :hash_excluding
# Matches if `arg.instance_of?(klass)`
#
# @example
#
# object.should_receive(:message).with(instance_of(Thing))
def instance_of(klass)
InstanceOf.new(klass)
end
alias_method :an_instance_of, :instance_of
# Matches if `arg.kind_of?(klass)`
# @example
#
# object.should_receive(:message).with(kind_of(Thing))
def kind_of(klass)
KindOf.new(klass)
end
alias_method :a_kind_of, :kind_of
private
def anythingize_lonely_keys(*args)
hash = args.last.class == Hash ? args.delete_at(-1) : {}
args.each { | arg | hash[arg] = anything }
hash
end
end
end
end
|
