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require 'spec_helper'
class UnsortableObject
def initialize(id)
@id = id
end
def inspect
@id.to_s
end
def ==(other)
false
end
end
describe "array.should =~ other_array" do
it "should pass if target contains all items" do
[1,2,3].should =~ [1,2,3]
end
it "should pass if target contains all items out of order" do
[1,3,2].should =~ [1,2,3]
end
it "should fail if target includes extra items" do
lambda {
[1,2,3,4].should =~ [1,2,3]
}.should fail_with(<<-MESSAGE)
expected collection contained: [1, 2, 3]
actual collection contained: [1, 2, 3, 4]
the extra elements were: [4]
MESSAGE
end
it "should fail if target is missing items" do
lambda {
[1,2].should =~ [1,2,3]
}.should fail_with(<<-MESSAGE)
expected collection contained: [1, 2, 3]
actual collection contained: [1, 2]
the missing elements were: [3]
MESSAGE
end
it "should fail if target is missing items and has extra items" do
lambda {
[1,2,4].should =~ [1,2,3]
}.should fail_with(<<-MESSAGE)
expected collection contained: [1, 2, 3]
actual collection contained: [1, 2, 4]
the missing elements were: [3]
the extra elements were: [4]
MESSAGE
end
it "should sort items in the error message if they all respond to <=>" do
lambda {
[6,2,1,5].should =~ [4,1,2,3]
}.should fail_with(<<-MESSAGE)
expected collection contained: [1, 2, 3, 4]
actual collection contained: [1, 2, 5, 6]
the missing elements were: [3, 4]
the extra elements were: [5, 6]
MESSAGE
end
it "should not sort items in the error message if they don't all respond to <=>" do
with_ruby 1.8 do
lambda {
[UnsortableObject.new(2), UnsortableObject.new(1)].should =~ [UnsortableObject.new(4), UnsortableObject.new(3)]
}.should fail_with(<<-MESSAGE)
expected collection contained: [4, 3]
actual collection contained: [2, 1]
the missing elements were: [4, 3]
the extra elements were: [2, 1]
MESSAGE
end
end
it "should accurately report extra elements when there are duplicates" do
lambda {
[1,1,1,5].should =~ [1,5]
}.should fail_with(<<-MESSAGE)
expected collection contained: [1, 5]
actual collection contained: [1, 1, 1, 5]
the extra elements were: [1, 1]
MESSAGE
end
it "should accurately report missing elements when there are duplicates" do
lambda {
[1,5].should =~ [1,1,5]
}.should fail_with(<<-MESSAGE)
expected collection contained: [1, 1, 5]
actual collection contained: [1, 5]
the missing elements were: [1]
MESSAGE
end
it "should work with subclasses of Array" do
class SuperArray < Array; end
SuperArray.new([1,2,3]).should =~ SuperArray.new([3,2,1])
end
end
describe "should_not =~ [:with, :multiple, :args]" do
it "should not be supported" do
lambda {
[1,2,3].should_not =~ [1,2,3]
}.should fail_with(/Matcher does not support should_not/)
end
end
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