Best Rr_ruby code snippet using RR.WildcardMatchers.inspect

wildcard_matchers.rb

Source:wildcard_matchers.rb

**...****10**To implement this, we need a class RR::WildcardMatchers::DivisibleBy with **11**these instance methods:**12*** ==(other)**13*** eql?(other) (usually aliased to #==)**14*** inspect**15*** wildcard_match?(other)**16**and optionally, a sensible initialize method. Let's look at each of these.**17**=== .initialize**18**Most custom wildcard matchers will want to define initialize to store**19**some information about just what should be matched. DivisibleBy#initialize**20**might look like this:**21** class RR::WildcardMatchers::DivisibleBy**22** def initialize(divisor)**23** @expected_divisor = divisor**24** end**25** end**26**=== #==(other)**27**DivisibleBy#==(other) should return true if other is a wildcard matcher that**28**matches the same things as self, so a natural way to write DivisibleBy#== is:**29** **30** class RR::WildcardMatchers::DivisibleBy**31** def ==(other)**32** # Ensure that other is actually a DivisibleBy**33** return false unless other.is_a?(self.class)**34** # Does other expect to match the same divisor we do?**35** self.expected_divisor = other.expected_divisor**36** end**37** end**38**Note that this implementation of #== assumes that we've also declared**39** attr_reader :expected_divisor**40**=== #inspect**41**Technically we don't have to declare DivisibleBy#inspect, since inspect is**42**defined for every object already. But putting a helpful message in inspect**43**will make test failures much clearer, and it only takes about two seconds to**44**write it, so let's be nice and do so:**45** class RR::WildcardMatchers::DivisibleBy**46** def inspect**47** "integer divisible by #{expected.divisor}"**48** end**49** end**50**Now if we run the example from above:**51** mock(BananaGrabber).bunch_bananas(divisible_by(5))**52**and it fails, we get a helpful message saying**53** bunch_bananas(integer divisible by 5)**54** Called 0 times.**55** Expected 1 times.**56**=== #wildcard_matches?(other)**57**wildcard_matches? is the method that actually checks the argument against the**58**expectation. It should return true if other is considered to match,**59**false otherwise. In the case of DivisibleBy, wildcard_matches? reads:**60** class RR::WildcardMatchers::DivisibleBy**61** def wildcard_matches?(other)**62** # If other isn't a number, how can it be divisible by anything?**63** return false unless other.is_a?(Numeric)**64** # If other is in fact divisible by expected_divisor, then **65** # other modulo expected_divisor should be 0.**66** other % expected_divisor == 0**67** end**68** end**69**=== A finishing touch: wrapping it neatly**70**We could stop here if we were willing to resign ourselves to using**71**DivisibleBy this way:**72** mock(BananaGrabber).bunch_bananas(DivisibleBy.new(5))**73**But that's less expressive than the original:**74** mock(BananaGrabber).bunch_bananas(divisible_by(5))**75**To be able to use the convenient divisible_by matcher rather than the uglier**76**DivisibleBy.new version, re-open the module RR::Adapters::RRMethods and**77**define divisible_by there as a simple wrapper around DivisibleBy.new:**78** module RR::Adapters::RRMethods**79** def divisible_by(expected_divisor)**80** RR::WildcardMatchers::DivisibleBy.new(expected_divisor)**81** end**82** end**83**== Recap**84**Here's all the code for DivisibleBy in one place for easy reference:**85** class RR::WildcardMatchers::DivisibleBy**86** def initialize(divisor)**87** @expected_divisor = divisor**88** end**89** def ==(other)**90** # Ensure that other is actually a DivisibleBy**91** return false unless other.is_a?(self.class)**92** # Does other expect to match the same divisor we do?**93** self.expected_divisor = other.expected_divisor**94** end**95** def inspect**96** "integer divisible by #{expected.divisor}"**97** end**98** **99** def wildcard_matches?(other)**100** # If other isn't a number, how can it be divisible by anything?**101** return false unless other.is_a?(Numeric)**102** # If other is in fact divisible by expected_divisor, then **103** # other modulo expected_divisor should be 0.**104** other % expected_divisor == 0**105** end**106** end**107** **108** module RR::Adapters::RRMethods**109** def divisible_by(expected_divisor)**...**

inspect

Using AI Code Generation

**1**puts inspect(RR::WildcardMatchers)**2**puts inspect(RR::WildcardMatchers)**3**puts inspect(RR::WildcardMatchers)**4**puts inspect(RR::WildcardMatchers)**5**puts inspect(RR::WildcardMatchers)**6**puts inspect(RR::WildcardMatchers)**7**puts inspect(RR::WildcardMatchers)

inspect

Using AI Code Generation

**1** assert_equal RR::WildcardMatchers::Equal.new(1).inspect, "1"**2** assert_equal RR::WildcardMatchers::NotEqual.new(1).inspect, "not 1"**3** assert_equal RR::WildcardMatchers::IsA.new(String).inspect, "a kind of String"**4** assert_equal RR::WildcardMatchers::NotIsA.new(String).inspect, "not a kind of String"**5** assert_equal RR::WildcardMatchers::Regexp.new(/abc/).inspect, "/abc/"**6** assert_equal RR::WildcardMatchers::NotRegexp.new(/abc/).inspect, "not /abc/"**7** assert_equal RR::WildcardMatchers::RespondTo.new(:abc).inspect, "respond to :abc"**8** assert_equal RR::WildcardMatchers::NotRespondTo.new(:abc).inspect, "not respond to :abc"**9** assert_equal RR::WildcardMatchers::HashIncluding.new(:a => 1).inspect, "{:a => 1}"**10** assert_equal RR::WildcardMatchers::NotHashIncluding.new(:a => 1).inspect, "not {:a => 1}"**11** assert_equal RR::WildcardMatchers::HashIncluding.new(:a => 1, :b => 2).inspect, "{:a => 1, :b => 2}"**12** assert_equal RR::WildcardMatchers::NotHashIncluding.new(:a => 1, :b => 2).inspect, "not {:a => 1, :b => 2}"**13** assert_equal RR::WildcardMatchers::HashIncluding.new(:a => 1, :b => 2, :c => 3).inspect, "{:a => 1, :b => 2, :c => 3}"**14** assert_equal RR::WildcardMatchers::NotHashIncluding.new(:a => 1, :b => 2, :c => 3).inspect, "not {:a => 1, :b => 2, :c => 3}"**15** assert_equal RR::WildcardMatchers::HashIncluding.new(:a => 1, :b => 2, :c => 3, :d =>

inspect

Using AI Code Generation

**1** assert_equal RR::WildcardMatchers::Equal.new(1).inspect, "1"**2** assert_equal RR::WildcardMatchers::NotEqual.new(1).inspect, "not 1"**3** assert_equal RR::WildcardMatchers::IsA.new(String).inspect, "a kind of String"**4** assert_equal RR::WildcardMatchers::NotIsA.new(String).inspect, "not a kind of String"**5** assert_equal RR::WildcardMatchers::Regexp.new(/abc/).inspect, "/abc/"**6** assert_equal RR::WildcardMatchers::NotRegexp.new(/abc/).inspect, "not /abc/"**7** assert_equal RR::WildcardMatchers::RespondTo.new(:abc).inspect, "respond to :abc"**8** assert_equal RR::WildcardMatchers::NotRespondTo.new(:abc).inspect, "not respond to :abc"**9** assert_equal RR::WildcardMatchers::HashIncluding.new(:a => 1).inspect, "{:a => 1}"**10** assert_equal RR::WildcardMatchers::NotHashIncluding.new(:a => 1).inspect, "not {:a => 1}"**11** assert_equal RR::WildcardMatchers::HashIncluding.new(:a => 1, :b => 2).inspect, "{:a => 1, :b => 2}"**12** assert_equal RR::WildcardMatchers::NotHashIncluding.new(:a => 1, :b => 2).inspect, "not {:a => 1, :b => 2}"**13** assert_equal RR::WildcardMatchers::HashIncluding.new(:a => 1, :b => 2, :c => 3).inspect, "{:a => 1, :b => 2, :c => 3}"**14** assert_equal RR::WildcardMatchers::NotHashIncluding.new(:a => 1, :b => 2, :c => 3).inspect, "not {:a => 1, :b => 2, :c => 3}"**15** assert_equal RR::WildcardMatchers::HashIncluding.new(:a => 1, :b => 2, :c => 3, :d =>

inspect

Using AI Code Generation

**1**def method_with_wildcard_matcher(wildcard_matcher)**2**method_with_wildcard_matcher(wildcard_matcher)**3**def method_with_wildcard_matcher(wildcard_matcher)**4**method_with_wildcard_matcher(wildcard_matcher)**5**stub(double).method_name(wildcard_matcher)**6**double.method_name(1)

inspect

Using AI Code Generation

**1**def method_with_wildcard_matcher(wildcard_matcher)**2**method_with_wildcard_matcher(wildcard_matcher)**3**def method_with_wildcard_matcher(wildcard_matcher)**4**method_with_wildcard_matcher(wildcard_matcher)**5**stub(double).method_name(wildcard_matcher)**6**double.method_name(1)

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