How to use numeric method of RR.DSL Package

Best Rr_ruby code snippet using RR.DSL.numeric

wildcard_matchers.rb

Source:wildcard_matchers.rb

1=begin rdoc2= Writing your own custom wildcard matchers.3Writing new wildcard matchers is not too difficult.  If you've ever written4a custom expectation in RSpec, the implementation is very similar.5As an example, let's say that you want a matcher that will match any number6divisible by a certain integer.  In use, it might look like this:7  # Will pass if BananaGrabber#bunch_bananas is called with an integer8  # divisible by 5.9  mock(BananaGrabber).bunch_bananas(divisible_by(5))10To implement this, we need a class RR::WildcardMatchers::DivisibleBy with11these instance methods:12* ==(other)13* eql?(other) (usually aliased to #==)14* inspect15* wildcard_match?(other)16and optionally, a sensible initialize method.  Let's look at each of these.17=== .initialize18Most custom wildcard matchers will want to define initialize to store19some information about just what should be matched.  DivisibleBy#initialize20might look like this:21  class RR::WildcardMatchers::DivisibleBy22    def initialize(divisor)23      @expected_divisor = divisor24    end25  end26=== #==(other)27DivisibleBy#==(other) should return true if other is a wildcard matcher that28matches the same things as self, so a natural way to write DivisibleBy#== is:29  class RR::WildcardMatchers::DivisibleBy30    def ==(other)31      # Ensure that other is actually a DivisibleBy32      return false unless other.is_a?(self.class)33      # Does other expect to match the same divisor we do?34      self.expected_divisor = other.expected_divisor35    end36  end37Note that this implementation of #== assumes that we've also declared38  attr_reader :expected_divisor39=== #inspect40Technically we don't have to declare DivisibleBy#inspect, since inspect is41defined for every object already.  But putting a helpful message in inspect42will make test failures much clearer, and it only takes about two seconds to43write it, so let's be nice and do so:44  class RR::WildcardMatchers::DivisibleBy45    def inspect46      "integer divisible by #{expected.divisor}"47    end48  end49Now if we run the example from above:50  mock(BananaGrabber).bunch_bananas(divisible_by(5))51and it fails, we get a helpful message saying52  bunch_bananas(integer divisible by 5)53  Called 0 times.54  Expected 1 times.55=== #wildcard_matches?(other)56wildcard_matches? is the method that actually checks the argument against the57expectation.  It should return true if other is considered to match,58false otherwise.  In the case of DivisibleBy, wildcard_matches? reads:59  class RR::WildcardMatchers::DivisibleBy60    def wildcard_matches?(other)61      # If other isn't a number, how can it be divisible by anything?62      return false unless other.is_a?(Numeric)63      # If other is in fact divisible by expected_divisor, then64      # other modulo expected_divisor should be 0.65      other % expected_divisor == 066    end67  end68=== A finishing touch: wrapping it neatly69We could stop here if we were willing to resign ourselves to using70DivisibleBy this way:71  mock(BananaGrabber).bunch_bananas(DivisibleBy.new(5))72But that's less expressive than the original:73  mock(BananaGrabber).bunch_bananas(divisible_by(5))74To be able to use the convenient divisible_by matcher rather than the uglier75DivisibleBy.new version, re-open the module RR::DSL and define divisible_by76there as a simple wrapper around DivisibleBy.new:77  module RR::DSL78    def divisible_by(expected_divisor)79      RR::WildcardMatchers::DivisibleBy.new(expected_divisor)80    end81  end82== Recap83Here's all the code for DivisibleBy in one place for easy reference:84  class RR::WildcardMatchers::DivisibleBy85    def initialize(divisor)86      @expected_divisor = divisor87    end88    def ==(other)89      # Ensure that other is actually a DivisibleBy90      return false unless other.is_a?(self.class)91      # Does other expect to match the same divisor we do?92      self.expected_divisor = other.expected_divisor93    end94    def inspect95      "integer divisible by #{expected.divisor}"96    end97    def wildcard_matches?(other)98      # If other isn't a number, how can it be divisible by anything?99      return false unless other.is_a?(Numeric)100      # If other is in fact divisible by expected_divisor, then101      # other modulo expected_divisor should be 0.102      other % expected_divisor == 0103    end104  end105  module RR::DSL106    def divisible_by(expected_divisor)107      RR::WildcardMatchers::DivisibleBy.new(expected_divisor)108    end109  end110=end111module RR::WildcardMatchers112end...

without_autohook.rb

Source:without_autohook.rb

...55require 'rr/expectations/any_argument_expectation'56require 'rr/expectations/times_called_expectation'57require 'rr/wildcard_matchers/anything'58require 'rr/wildcard_matchers/is_a'59require 'rr/wildcard_matchers/numeric'60require 'rr/wildcard_matchers/boolean'61require 'rr/wildcard_matchers/duck_type'62require 'rr/wildcard_matchers/satisfy'63require 'rr/wildcard_matchers/hash_including'64require 'rr/times_called_matchers/terminal'65require 'rr/times_called_matchers/non_terminal'66require 'rr/times_called_matchers/times_called_matcher'67require 'rr/times_called_matchers/never_matcher'68require 'rr/times_called_matchers/any_times_matcher'69require 'rr/times_called_matchers/integer_matcher'70require 'rr/times_called_matchers/range_matcher'71require 'rr/times_called_matchers/proc_matcher'72require 'rr/times_called_matchers/at_least_matcher'73require 'rr/times_called_matchers/at_most_matcher'...

wildcard_matchers_spec.rb

Source:wildcard_matchers_spec.rb

...17      it "rr_is_a returns an IsA matcher" do18        expect(rr_is_a(Integer)).to eq RR::WildcardMatchers::IsA.new(Integer)19      end20    end21    describe "#numeric" do22      it "returns an Numeric matcher" do23        expect(numeric).to eq RR::WildcardMatchers::Numeric.new24      end25      it "rr_numeric returns an Numeric matcher" do26        expect(rr_numeric).to eq RR::WildcardMatchers::Numeric.new27      end28    end29    describe "#boolean" do30      it "returns an Boolean matcher" do31        expect(boolean).to eq RR::WildcardMatchers::Boolean.new32      end33      it "rr_boolean returns an Boolean matcher" do34        expect(rr_boolean).to eq RR::WildcardMatchers::Boolean.new35      end36    end37    describe "#duck_type" do38      it "returns a DuckType matcher" do39        expect(duck_type(:one, :two)).to eq RR::WildcardMatchers::DuckType.new(:one, :two)40      end...

numeric

Using AI Code Generation

1  def initialize(value)2  def ==(other)3  def >(other)4  def <(other)5  def ==(other)6  def ==(other)7  def ==(other)8  def ==(other)9  def ==(other)10  def ==(other)11  def ==(other)12  def ==(other)13  def ==(other)14  def ==(other)15  def ==(other)16  def ==(other)17  def ==(other)18  def ==(other)19  def ==(other)20  def ==(other)21  def ==(other)22  def ==(other)23  def ==(other)

numeric

Using AI Code Generation

1def mock(name)2 rr.mock(name)3def stub(name)4 rr.stub(name)5def proxy(name)6 rr.proxy(name)

numeric

Using AI Code Generation

1RR::DSL::Numeric.new( 1 )2RR::DSL::String.new( "foo" )3RR::DSL::Array.new( :foo, :bar )4RR::DSL::Hash.new( :foo => :bar )5RR::DSL::Numeric.new( 1 ) do |n|6RR::DSL::String.new( "foo" ) do |s|7RR::DSL::Array.new( :foo, :bar ) do |a|8RR::DSL::Hash.new( :foo => :bar ) do |h|9  h.should == { :foo => :bar }10  h.should == { :foo => :bar }11RR::DSL::Numeric.new( 1 )12RR::DSL::String.new( "foo" )13RR::DSL::Array.new( :foo, :bar )14RR::DSL::Hash.new( :foo => :bar )15RR::DSL::Numeric.new( 1 ) do |n|16RR::DSL::String.new( "foo" ) do |s|17RR::DSL::Array.new( :foo, :bar ) do |a|18RR::DSL::Hash.new( :foo => :bar ) do |

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