rspec - 为什么当它们相同时，这个属性比较使用 assert_equal 会失败，仅在 ubuntu 上? [英] rspec - why does this attribute comparison usng assert_equal fail when they are the same, on ubuntu only?

问题描述

两个测试都失败了 - 但仅限于 Ubuntu(12) 而不是我的(新)Mac.

Two tests are failing - but only on Ubuntu(12) but not on my (new) Mac.

失败的两个是 Active Record 对象属性比较，但我努力比较它们，例如在命令行中生成散列并将属性粘贴进去，比较表明它们是相同的.

The failure two are Active Record object attribute comparisons but in all my effort to compare them, e.g. making hash's at the command line and pasting the attributes in, the comparison says they are the same.

一个真正的难题，因为我们拥有包含数百个测试的广泛测试套件.Rails 3.2.8，rspec 2.11

A real puzzler as we have an extensive test suite with many hundreds of tests. Rails 3.2.8, rspec 2.11

Failure/Error: assert_equal @iep_service.attributes, IepService.first.attributes
 MiniTest::Assertion:
   <{"id"=>414,
    "duration"=>30,
    "frequency"=>3,
    "period"=>"week",
    "group_size"=>"group",
    "location"=>nil,
    "service"=>nil,
    "area_of_need"=>"speech",
    "created_at"=>Tue, 09 Oct 2012 01:53:39 UTC +00:00,
    "updated_at"=>Tue, 09 Oct 2012 01:53:39 UTC +00:00,
    "therapist_id"=>nil,
    "start_date"=>nil,
    "end_date"=>nil,
    "student_id"=>469,
    "adhoc"=>false}> expected but was
   <{"id"=>414,
    "duration"=>30,
    "frequency"=>3,
    "period"=>"week",
    "group_size"=>"group",
    "location"=>nil,
    "service"=>nil,
    "area_of_need"=>"speech",
    "created_at"=>Tue, 09 Oct 2012 01:53:39 UTC +00:00,
    "updated_at"=>Tue, 09 Oct 2012 01:53:39 UTC +00:00,
    "therapist_id"=>nil,
    "start_date"=>nil,
    "end_date"=>nil,
    "student_id"=>469,
    "adhoc"=>false}>.
# (eval):2:in `assert_equal'

测试代码:

  context "And a pre-existing Iep Service for one of those students" do
    before(:each) { @iep_service = FactoryGirl.create(:iep_service, :student => @district.students.first) }

    context "And an Iep Service CSV" do
      before(:each) { @spreadsheet = IepServiceSpreadsheet.new(@district, open_spec_fixture_file('sample-ieps.csv')) }

      specify "Prevent importing" do
        # Leave database untouched
        assert_equal 1, IepService.count
        assert_equal @iep_service.attributes, IepService.first.attributes

        # Provide error report
        assert @spreadsheet.error_report.any?
      end 
    end 
  end 

我也试过:@iep_service.attributes.should == IepService.first.attributes

但是得到:

 Failure/Error: @iep_service.attributes.should == IepService.first.attributes
   expected: {"id"=>421, "duration"=>30, "frequency"=>3, "period"=>"week", "group_size"=>"group", "location"=>nil, "service"=>nil, "area_of_need"=>"speech", "created_at"=>Tue, 09 Oct 2012 02:13:51 UTC +00:00, "updated_at"=>Tue, 09 Oct 2012 02:13:51 UTC +00:00, "therapist_id"=>nil, "start_date"=>nil, "end_date"=>nil, "student_id"=>483, "adhoc"=>false}
        got: {"id"=>421, "duration"=>30, "frequency"=>3, "period"=>"week", "group_size"=>"group", "location"=>nil, "service"=>nil, "area_of_need"=>"speech", "created_at"=>Tue, 09 Oct 2012 02:13:51 UTC +00:00, "updated_at"=>Tue, 09 Oct 2012 02:13:51 UTC +00:00, "therapist_id"=>nil, "start_date"=>nil, "end_date"=>nil, "student_id"=>483, "adhoc"=>false} (using ==)

有一个很大的差异，包括检查'的实现:

with a big diff including "check the implementation of':

      Diff:{"id"=>421, "duration"=>30, "frequency"=>3, "period"=>"week",  
"group_size"=>"group", "location"=>nil, "service"=>nil, "area_of_need"=>"speech",  
"created_at"=>Tue, 09 Oct 2012 02:13:51 UTC +00:00, "updated_at"=>Tue, 09 Oct 2012 02:13:51 
UTC +00:00, "therapist_id"=>nil, "start_date"=>nil, "end_date"=>nil, "student_id"=>483, 
"adhoc"=>false}.==({"id"=>421, "duration"=>30, "frequency"=>3, "period"=>"week", 
"group_size"=>"group", "location"=>nil, "service"=>nil, "area_of_need"=>"speech", "created_at"=>Tue, 09 Oct 2012 02:13:51 UTC +00:00, "updated_at"=>Tue, 09 Oct 2012 02:13:51 UTC +00:00, "therapist_id"=>nil, "start_date"=>nil, "end_date"=>nil, "student_id"=>483, "adhoc"=>false}) returned false even though the diff between {"id"=>421, "duration"=>30, "frequency"=>3, "period"=>"week", "group_size"=>"group", "location"=>nil, "service"=>nil, 
"area_of_need"=>"speech", "created_at"=>Tue, 09 Oct 2012 02:13:51 UTC +00:00, 
"updated_at"=>Tue, 09 Oct 2012 02:13:51 UTC +00:00, "therapist_id"=>nil, "start_date"=>nil, 
"end_date"=>nil, "student_id"=>483, "adhoc"=>false} and {"id"=>421, "duration"=>30, 
"frequency"=>3, "period"=>"week", "group_size"=>"group", "location"=>nil, "service"=>nil, 
"area_of_need"=>"speech", "created_at"=>Tue, 09 Oct 2012 02:13:51 UTC +00:00, 
"updated_at"=>Tue, 09 Oct 2012 02:13:51 UTC +00:00, "therapist_id"=>nil, "start_date"=>nil, 
"end_date"=>nil, "student_id"=>483, "adhoc"=>false} is empty. 
Check the implementation of 
{"id"=>421, "duration"=>30, "frequency"=>3, "period"=>"week", "group_size"=>"group", 
"location"=>nil, "service"=>nil, "area_of_need"=>"speech", "created_at"=>Tue, 09 Oct 2012 
02:13:51 UTC +00:00, "updated_at"=>Tue, 09 Oct 2012 02:13:51 UTC +00:00, 
"therapist_id"=>nil, "start_date"=>nil, "end_date"=>nil, "student_id"=>483, 
"adhoc"=>false}.==.

推荐答案

没有给出真正的答案，所以我遍历了属性，例如

No real answer has been given so I've gone with iterating through the atrributes, e.g.

i=0
while i < @student.attributes.count
  assert_equal @student.attributes[i], Student.first.attributes[i]
  i+= 1
end

# Comparing field by field as ruby hash comparison isn't working right - 
# but only on Ubuntu!

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