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RSpec::Matchers::BuiltIn::Have

Public Class Methods

new(expected, relativity=:exactly) click to toggle source
    # File lib/rspec/matchers/built_in/have.rb, line 5
 5:         def initialize(expected, relativity=:exactly)
 6:           @expected = case expected
 7:                       when :no then 0
 8:                       when String then expected.to_i
 9:                       else expected
10:                       end
11:           @relativity = relativity
12:           @actual = @collection_name = @plural_collection_name = nil
13:         end

Public Instance Methods

description() click to toggle source
    # File lib/rspec/matchers/built_in/have.rb, line 81
81:         def description
82:           "have #{relative_expectation} #{@collection_name}"
83:         end
determine_collection(collection_or_owner) click to toggle source
    # File lib/rspec/matchers/built_in/have.rb, line 35
35:         def determine_collection(collection_or_owner)
36:           if collection_or_owner.respond_to?(@collection_name)
37:             collection_or_owner.send(@collection_name, *@args, &@block)
38:           elsif (@plural_collection_name && collection_or_owner.respond_to?(@plural_collection_name))
39:             collection_or_owner.send(@plural_collection_name, *@args, &@block)
40:           elsif determine_query_method(collection_or_owner)
41:             collection_or_owner
42:           else
43:             collection_or_owner.send(@collection_name, *@args, &@block)
44:           end
45:         end
determine_query_method(collection) click to toggle source
    # File lib/rspec/matchers/built_in/have.rb, line 47
47:         def determine_query_method(collection)
48:           [:size, :length, :count].detect {|m| collection.respond_to?(m)}
49:         end
failure_message_for_should() click to toggle source
    # File lib/rspec/matchers/built_in/have.rb, line 55
55:         def failure_message_for_should
56:           "expected #{relative_expectation} #{@collection_name}, got #{@actual}"
57:         end
failure_message_for_should_not() click to toggle source
    # File lib/rspec/matchers/built_in/have.rb, line 59
59:         def failure_message_for_should_not
60:           if @relativity == :exactly
61:             return "expected target not to have #{@expected} #{@collection_name}, got #{@actual}"
62:           elsif @relativity == :at_most
63:             return Isn't life confusing enough?Instead of having to figure out the meaning of this:  should_not have_at_most(#{@expected}).#{@collection_name}We recommend that you use this instead:  should have_at_least(#{@expected + 1}).#{@collection_name}
64:           elsif @relativity == :at_least
65:             return Isn't life confusing enough?Instead of having to figure out the meaning of this:  should_not have_at_least(#{@expected}).#{@collection_name}We recommend that you use this instead:  should have_at_most(#{@expected - 1}).#{@collection_name}
66:           end
67:         end
matches?(collection_or_owner) click to toggle source
    # File lib/rspec/matchers/built_in/have.rb, line 23
23:         def matches?(collection_or_owner)
24:           collection = determine_collection(collection_or_owner)
25:           query_method = determine_query_method(collection)
26:           raise not_a_collection unless query_method
27:           @actual = collection.send(query_method)
28:           case @relativity
29:           when :at_least then @actual >= @expected
30:           when :at_most  then @actual <= @expected
31:           else                @actual == @expected
32:           end
33:         end
not_a_collection() click to toggle source
    # File lib/rspec/matchers/built_in/have.rb, line 51
51:         def not_a_collection
52:           "expected #{@collection_name} to be a collection but it does not respond to #length, #size or #count"
53:         end
relativities() click to toggle source
    # File lib/rspec/matchers/built_in/have.rb, line 15
15:         def relativities
16:           @relativities ||= {
17:             :exactly => "",
18:             :at_least => "at least ",
19:             :at_most => "at most "
20:           }
21:         end
respond_to?(m) click to toggle source
    # File lib/rspec/matchers/built_in/have.rb, line 85
85:         def respond_to?(m)
86:           @expected.respond_to?(m) || super
87:         end

Private Instance Methods

method_missing(method, *args, &block) click to toggle source
    # File lib/rspec/matchers/built_in/have.rb, line 91
91:         def method_missing(method, *args, &block)
92:           @collection_name = method
93:           if inflector = (defined?(ActiveSupport::Inflector) && ActiveSupport::Inflector.respond_to?(:pluralize) ? ActiveSupport::Inflector : (defined?(Inflector) ? Inflector : nil))
94:             @plural_collection_name = inflector.pluralize(method.to_s)
95:           end
96:           @args = args
97:           @block = block
98:           self
99:         end
relative_expectation() click to toggle source
     # File lib/rspec/matchers/built_in/have.rb, line 101
101:         def relative_expectation
102:           "#{relativities[@relativity]}#{@expected}"
103:         end

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