Rails - May 2009 - Testing fields

Hi,

I have a model named ''applicant''.
Applicant has various fields, one of them is ''date_of_birth''
I have split the field ''date of birth'' into three fields:
''dob_day'', ''dob_month'',
''dob_year''

From the view:
<% form_for :applicant, :url=> {:action => "index"} do |f|
%>
<ul>
  <li>
    <%= f.label :dob, "Date of birth" %>
    <%= f.text_field :dob_day, :maxlength => 2 %>
    <%= f.text_field :dob_month, :maxlength => 2 %>
    <%= f.text_field :dob_year, :maxlength => 4 %>
    <%= error_message_on :applicant, :date_of_birth %>
  </li>
</ul>
<% end %>

The idea is that the user then types their date of birth into the text
fields in the form DD-MM-YYYY.
As these three fields (''dob_day'',
''dob_month'', ''dob_year'') don''t
exist
in the database (only ''date_of_birth'') does, Rails then looks
in the
model, where it finds the following getter and setter methods:

def dob_day=(day)
@dob_day = day
make_date
@dob_day
end

def dob_month=(month)
@dob_month = month
make_date
@dob_month
end

def dob_year=(year)
@dob_year = year
make_date
@dob_year
end

def make_date
if defined? @dob_day and @dob_day != "" and defined? @dob_month and
@dob_month != "" and defined? @dob_year and @dob_year !=""
self.dob = [@dob_day, @dob_month, @dob_year].join(''-'')
else
self.dob = ""
end
end

This has the effect that a string in the form of "01-01-2009" is
returned to the field ''date_of_birth''

This works great.

My question: how would I write a test to check that if I set
''dob_day'',
''dob_month'', ''dob_year'' to
''01'', ''01'', ''2000'', that
the strig
''01-01-2000'' is returned?

I tried this:

def test_should_return_date_of_birth
applicant = Applicant.new(valid_applicant_attributes(:date_of_birth =>
""))
date_of_birth_day = "01"
date_of_birth_month = "01"
date_of_birth_year = "1999"
assert_equal "01-01-1999", applicant.date_of_birth
end

but got the error:
("01-01-1999") expected, but was ("").

And this:

def test_should_return_date_of_birth
applicant = Applicant.new(valid_applicant_attributes(:date_of_birth =>
"", :date_of_birth_day => "01", :date_of_birth_month
=> "01",
:date_of_birth_year => "1999"))
assert_equal "01-01-09", applicant.date_of_birth
end

but got the error:
unknown attribute: date_of_birth_year

Sorry if this question is long winded, I lack the terminology to explain
it any other way (suggestions welcome).

Thanks for any help you can give.
-- 
Posted via http://www.ruby-forum.com/.

Probably doesn''t make any difference to your understanding, but I
forgot
to mention that in my model is also:

attr_reader :dob_day, :dob_month, :dob_year
-- 
Posted via http://www.ruby-forum.com/.

2009/5/25 Jim Burgess
<rails-mailing-list-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
>
> Hi,
>
> I have a model named ''applicant''.
> Applicant has various fields, one of them is
''date_of_birth''
> I have split the field ''date of birth'' into three fields:
> ''dob_day'', ''dob_month'',
''dob_year''
>
> From the view:
> <% form_for :applicant, :url=> {:action => "index"} do
|f| %>
> <ul>
>  <li>
>    <%= f.label :dob, "Date of birth" %>
>    <%= f.text_field :dob_day, :maxlength => 2 %>
>    <%= f.text_field :dob_month, :maxlength => 2 %>
>    <%= f.text_field :dob_year, :maxlength => 4 %>
>    <%= error_message_on :applicant, :date_of_birth %>
>  </li>
> </ul>
> <% end %>
>
> The idea is that the user then types their date of birth into the text
> fields in the form DD-MM-YYYY.
> As these three fields (''dob_day'',
''dob_month'', ''dob_year'') don''t
exist
> in the database (only ''date_of_birth'') does, Rails then
looks in the
> model, where it finds the following getter and setter methods:
>
> def dob_day=(day)
> @dob_day = day
> make_date
> @dob_day
> end
>
> def dob_month=(month)
> @dob_month = month
> make_date
> @dob_month
> end
>
> def dob_year=(year)
> @dob_year = year
> make_date
> @dob_year
> end
>
> def make_date
> if defined? @dob_day and @dob_day != "" and defined? @dob_month
and
> @dob_month != "" and defined? @dob_year and @dob_year
!=""
> self.dob = [@dob_day, @dob_month, @dob_year].join(''-'')
> else
> self.dob = ""
> end
> end
>
> This has the effect that a string in the form of "01-01-2009" is
> returned to the field ''date_of_birth''
>
> This works great.
>
> My question: how would I write a test to check that if I set
''dob_day'',
> ''dob_month'', ''dob_year'' to
''01'', ''01'', ''2000'', that
the strig
> ''01-01-2000'' is returned?
>
> I tried this:
>
> def test_should_return_date_of_birth
> applicant = Applicant.new(valid_applicant_attributes(:date_of_birth =>
> ""))
> date_of_birth_day = "01"
> date_of_birth_month = "01"
> date_of_birth_year = "1999"
> assert_equal "01-01-1999", applicant.date_of_birth
> end
>
Assuming this is a unit test then I think it should be
application.dob_day = "01"  etc.

>
> but got the error:
> ("01-01-1999") expected, but was ("").
>
> And this:
>
> def test_should_return_date_of_birth
> applicant = Applicant.new(valid_applicant_attributes(:date_of_birth =>
> "", :date_of_birth_day => "01", :date_of_birth_month
=> "01",
> :date_of_birth_year => "1999"))
> assert_equal "01-01-09", applicant.date_of_birth
> end
>
> but got the error:
> unknown attribute: date_of_birth_year
>
Again the attriutes are dob_day etc not date_of_birth_day.

>
> Sorry if this question is long winded, I lack the terminology to explain
> it any other way (suggestions welcome).
>
> Thanks for any help you can give.
> --
> Posted via http://www.ruby-forum.com/.
>
> >
>
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> Assuming this is a unit test then I think it should be
> application.dob_day = "01"  etc.
> Again the attriutes are dob_day etc not date_of_birth_day.
Thanks for that Colin,

def test_should_make_date
applicant = Applicant.new(valid_applicant_attributes(:date_of_birth => 
""))
applicant.dob_day = "01"
applicant.dob_month = "01"
applicant.dob_year = "1999"
assert_equal "01-01-1999", applicant.date_of_birth
end

works (as you might expect) absolutely fine.

It''s been a long day already, I think I need some more coffee.
Thanks for taking the time to read through my question and find my typo.

Jim

-- 
Posted via http://www.ruby-forum.com/.