Generated on Mon Aug 13 01:18:54 -0400 2007 with rcov 0.8.0
Code reported as executed by Ruby looks like this... and this: this line is also marked as covered. Lines considered as run by rcov, but not reported by Ruby, look like this, and this: these lines were inferred by rcov (using simple heuristics). Finally, here's a line marked as not executed.
| Name | Total lines | Lines of code | Total coverage | Code coverage | ||||||||
| lib/spec/matchers/change.rb | 120 | 65 |
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1 module Spec 2 module Matchers 3 4 #Based on patch from Wilson Bilkovich 5 class Change #:nodoc: 6 def initialize(receiver=nil, message=nil, &block) 7 @receiver = receiver 8 @message = message 9 @block = block 10 end 11 12 def matches?(target, &block) 13 if block 14 raise MatcherError.new(<<-EOF 15 block passed to should or should_not change must use {} instead of do/end 16 EOF 17 ) 18 end 19 @target = target 20 execute_change 21 return false if @from && (@from != @before) 22 return false if @to && (@to != @after) 23 return (@before + @amount == @after) if @amount 24 return @before != @after 25 end 26 27 def execute_change 28 @before = @block.nil? ? @receiver.send(@message) : @block.call 29 @target.call 30 @after = @block.nil? ? @receiver.send(@message) : @block.call 31 end 32 33 def failure_message 34 if @to 35 "#{result} should have been changed to #{@to.inspect}, but is now #{@after.inspect}" 36 elsif @from 37 "#{result} should have initially been #{@from.inspect}, but was #{@before.inspect}" 38 elsif @amount 39 "#{result} should have been changed by #{@amount.inspect}, but was changed by #{actual_delta.inspect}" 40 else 41 "#{result} should have changed, but is still #{@before.inspect}" 42 end 43 end 44 45 def result 46 @message || "result" 47 end 48 49 def actual_delta 50 @after - @before 51 end 52 53 def negative_failure_message 54 "#{result} should not have changed, but did change from #{@before.inspect} to #{@after.inspect}" 55 end 56 57 def by(amount) 58 @amount = amount 59 self 60 end 61 62 def to(to) 63 @to = to 64 self 65 end 66 67 def from (from) 68 @from = from 69 self 70 end 71 end 72 73 # :call-seq: 74 # should change(receiver, message, &block) 75 # should change(receiver, message, &block).by(value) 76 # should change(receiver, message, &block).from(old).to(new) 77 # should_not change(receiver, message, &block) 78 # 79 # Allows you to specify that a Proc will cause some value to change. 80 # 81 # == Examples 82 # 83 # lambda { 84 # team.add_player(player) 85 # }.should change(roster, :count) 86 # 87 # lambda { 88 # team.add_player(player) 89 # }.should change(roster, :count).by(1) 90 # 91 # string = "string" 92 # lambda { 93 # string.reverse 94 # }.should change { string }.from("string").to("gnirts") 95 # 96 # lambda { 97 # person.happy_birthday 98 # }.should change(person, :birthday).from(32).to(33) 99 # 100 # lambda { 101 # employee.develop_great_new_social_networking_app 102 # }.should change(employee, :title).from("Mail Clerk").to("CEO") 103 # 104 # Evaluates +receiver.message+ or +block+ before and 105 # after it evaluates the c object (generated by the lambdas in the examples above). 106 # 107 # Then compares the values before and after the +receiver.message+ and 108 # evaluates the difference compared to the expected difference. 109 # 110 # == Warning 111 # +should_not+ +change+ only supports the form with no subsequent calls to 112 # +be+, +to+ or +from+. 113 # 114 # blocks passed to +should+ +change+ and +should_not+ +change+ 115 # must use the <tt>{}</tt> form (<tt>do/end</tt> is not supported) 116 def change(target=nil, message=nil, &block) 117 Matchers::Change.new(target, message, &block) 118 end 119 end 120 end
Generated using the rcov code coverage analysis tool for Ruby version 0.8.0.