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Taro

2008-Jan-04 16:37 UTC

Confused by the unit test results.

I''m testing the relation between two of my models: MessageThread
(parent), which has_many Message (children).  When I run the following
test, it gives me an error:
---------------------------------
  # test with a valid message
  def test_valid_message_new
    thread = MessageThread.new :title => ''awesome thread''
    message = thread.messages.build(:body =>''total
awesomeness'')
    assert thread.valid?, ''thread not valid''
    assert (thread.messages.size == 1)
    assert_equal ''total awesomeness'', message.body
    assert !thread.messages[0].nil?
   #line 182, and the line below, line 183
    assert thread.messages.find(:first, :conditions => {:body =>
''total awesomeness''}), ''Cannot find message''
  end

---------------------------------
Loaded suite message_thread_test
Started
.............F
Finished in 0.285501 seconds.

  1) Failure:
test_valid_message_new(MessageThreadTest) [message_thread_test.rb:
183]:
Cannot find message.
<nil> is not true.
---------------------------------
Why doesn''t method find() find anything?  Is the :condition parameter
incorrect?  I tried saving message, but it still didn''t find the
message I was looking for.  Is the find method deprecated?
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Frederick Cheung

2008-Jan-04 16:40 UTC

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Re: Confused by the unit test results.

On 4 Jan 2008, at 16:37, Taro wrote:
>
> I''m testing the relation between two of my models: MessageThread
> (parent), which has_many Message (children).  When I run the following
> test, it gives me an error:
> ---------------------------------
>  # test with a valid message
>  def test_valid_message_new
>    thread = MessageThread.new :title => ''awesome
thread''
>    message = thread.messages.build(:body =>''total
awesomeness'')
>    assert thread.valid?, ''thread not valid''
>    assert (thread.messages.size == 1)
>    assert_equal ''total awesomeness'', message.body
>    assert !thread.messages[0].nil?
>   #line 182, and the line below, line 183
>    assert thread.messages.find(:first, :conditions => {:body =>
> ''total awesomeness''}), ''Cannot find
message''
>  end
>
> ---------------------------------
> Loaded suite message_thread_test
> Started
> .............F
> Finished in 0.285501 seconds.
>
>  1) Failure:
> test_valid_message_new(MessageThreadTest) [message_thread_test.rb:
> 183]:
> Cannot find message.
> <nil> is not true.
> ---------------------------------
> Why doesn''t method find() find anything?  Is the :condition
parameter
> incorrect?  I tried saving message, but it still didn''t find the
> message I was looking for.  Is the find method deprecated?
Neither of those objects have been saved, so there is nothing to find.  
you would have to save both thread & message.

Fred
>
> >

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gemblon (t.b.)

2008-Jan-04 16:46 UTC

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Re: Confused by the unit test results.

Frederick Cheung wrote:> On 4 Jan 2008, at 16:37, Taro wrote:
> 
>>    assert (thread.messages.size == 1)
>> .............F
>> message I was looking for.  Is the find method deprecated?
> Neither of those objects have been saved, so there is nothing to find.
> you would have to save both thread & message.
> 
> Fred
Fred is a genius....
-- 
Posted via http://www.ruby-forum.com/.

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Taro

2008-Jan-04 16:55 UTC

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Re: Confused by the unit test results.

Ahhh..I have to save the thread....I see.  Thank you.

On Jan 4, 11:46 am, "gemblon (t.b.)" <rails-mailing-l...@andreas-
s.net> wrote:> Frederick Cheung wrote:
> > On 4 Jan 2008, at 16:37, Taro wrote:
>
> >>    assert (thread.messages.size == 1)
> >> .............F
> >> message I was looking for.  Is the find method deprecated?
> > Neither of those objects have been saved, so there is nothing to find.
> > you would have to save both thread & message.
>
> > Fred
>
> Fred is a genius....
> --
> Posted viahttp://www.ruby-forum.com/.--~--~---------~--~----~------------~-------~--~----~
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Taro

2008-Jan-04 21:26 UTC

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Re: Confused by the unit test results.

OK, new problem:
This time, I''m using MessageBoard (child) to acts_as_list for Forum
(parent).  The models looks as such:
-----------------------------
class Forum < ActiveRecord::Base
  #This is a superset of message boards
  has_many :message_boards, :order => :order, :dependent => :destroy
...
end
-----------------------------
class MessageBoard < ActiveRecord::Base
  #This is a subset of forums
  belongs_to :forum

  #This causes MessageBoard to act as a list
  #it uses order as its index
  acts_as_list :scope => :forum_id
...
end
-----------------------------
A slight mistake on my part, I wanted the message boards to be ordered
by the MySQL (I use Rails 1.2.5) column :order (as seen in line :order
=> :order).  However, this error arises:
-----------------------------
Loaded suite message_board_test
Started
........E.
Finished in 0.347567 seconds.

  1) Error:
test_title_overlap(MessageBoardTest):
ActiveRecord::StatementInvalid: Mysql::Error: #42S22Unknown column
''position'' in ''order clause'': SELECT * FROM
message_boards WHERE
(forum_id = 2)  ORDER BY position DESC LIMIT 1
....
-----------------------------
Does the column name HAVE to be "position"?
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Frederick Cheung

2008-Jan-06 16:57 UTC

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Re: Confused by the unit test results.

On 4 Jan 2008, at 21:26, Taro wrote:
>
>  1) Error:
> test_title_overlap(MessageBoardTest):
> ActiveRecord::StatementInvalid: Mysql::Error: #42S22Unknown column
> ''position'' in ''order clause'': SELECT *
FROM message_boards WHERE
> (forum_id = 2)  ORDER BY position DESC LIMIT 1
> ....
> -----------------------------
> Does the column name HAVE to be "position"?
No: use the :column option to acts_as_list

Fred>
> >

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