Routes and Testing Routes

Rails
1

I love the routes feature for RoR…until now. I’m trying to write tests
to make sure my urls are correctly mapping to the routes I expect them
to map to. This is driving me nuts because I simply can’t get any of my
tests to pass. I have thus concluded that routes must work differently
than I thought. If someone could possibly point me in the right
direction, I would really appreciate it…I will try to explain my
understanding of how routes work.

Here is my route:

map.download
'latform_filter/:software/:version/latform/:distribution_channel/:id',
    :controller => 'user/version',
    latform_filter => /all/,
    latform => /windows/linux/,
    :distribution_channel => /download/,
    :action => 'download',
    :id => /\d+/

Ok, so the following url will map to this route:
http://mysite.com:3000/all/eudora/7.0.1/windows/download/5

Here’s how I think the match is determined:

  1. Rails looks at the first portion of the url–“all”–and checks to
    see if it will be accepted by my route. It matches my regex
    constraint, so platform_filter => “all” is set.
  2. Rails inspects the next url item–“eudora”–checks to see if it
    matches my mapping constraint. There is no constraint, so it
    matches, sets :software => “eudora”.
  3. Rails inspects the next url item–“7.0.1”–checks to see if it
    matches my mapping constraint. There is no constraint, so :version
    => “7.0.1” is set.
  4. Rails inspects the next url item–“windows”–checks to see if it
    matches my mapping constraint. It matches my regex constraint, so
    platform => “windows” is set.
  5. Rails inspects the next url item–“download”–checks to see if it
    matches my mapping constraint. It matches my regex constraint, so
    :distribution_channel => “download” is set.
  6. Rails inspects the last url item–“5”–checks to see if it matches
    my mapping constraint. It matches my regex constraint, so :id =>
    “download” is set.
  7. All the url portions mapped, so this route will be used.
  8. Rails looks at the :controller and the :action defined in this
    route and executes them, passing all the matchig url portions via
    the params hash. Ex: we can access the :software portion of the
    url like this–params[:software]

If any of the above steps do not match, the route is skipped, the keys
are cleared and the process is repeated with the next route.

So now I want to test my route with within the
User::VersionControllerTest class:

def test_route
url = "/all/eudora/7.0.1/windows|download/5"
opts = {:controller => 'user/version', latform_filter => "all",
:software => "eudora",
             :version => "7.0.1", latform => "windows",
             :distribution_channel => "download", :id => 5}

assert_recognizes(opts, url)     # Assertion fails!
end

I really don’t understand why this is failing, even the error message
doesn’t make sense:

The recognized options <{"software"=>"eudora",
"platform"=>"windows",
"action"=>"download",
"platform_filter"=>"all",
"id"=>"5",
"controller"=>"user/version",
"version"=>"7.0.1",
"distribution_channel"=>"download"}> did not match 
<{"software"=>"eudora",
"platform"=>"windows",
"platform_filter"=>"all",
"id"=>5,
"controller"=>"user/version",
"version"=>"7.0.1",
"distribution_channel"=>"download"}>

The error message show identical options but says they don’t match?

If anyone can shed some light on this, please do.

-Steven

2

Hello Steven,

“platform_filter”=>“all”,
“id”=>5,
“controller”=>“user/version”,
“version”=>“7.0.1”,
“distribution_channel”=>“download”}>
[/code]

The error message show identical options but says they don’t match?

The two hashes are not the same because of “action” => “download”
key/value pair. I guess you have to modify opts.

Hope it helps,

-- Jean-François.
3

Thanks!

I’ve been staring at the computer screen way too long! :stuck_out_tongue:

However, hah, when I change “opts” I get:

def test_route
url = “/all/#{sname}/#{vname}/#{platform_name}/download/5”
opts = {:controller => ‘user/version’, :platform_filter => “all”,
:software => sname,
:version => vname, :platform => platform_name, :action =>
“download”,
:distribution_channel => “download”, :id => 5}

assert_recognizes(opts, url)
end

[ERROR]:
The recognized options <{“software”=>“matlab”,
“platform”=>“windows”,
“action”=>“download”,
“platform_filter”=>“all”,
“id”=>“5”,
“controller”=>“user/version”,
“version”=>“r2006a”,
“distribution_channel”=>“download”}> did not match
<{“software”=>“matlab”,
“platform”=>“windows”,
“platform_filter”=>“all”,
“action”=>“download”,
“id”=>5,
“controller”=>“user/version”,
“version”=>“r2006a”,
“distribution_channel”=>“download”}>

4

Hello again Steven,

I’ve been staring at the computer screen way too long! :stuck_out_tongue:

Yes, a pause for the eyes in not bad…

assert_recognizes(opts, url)
end

Because 5 is different from “5” !

РJean-Fran̤ois.

5

2006/5/19, Steven H. [email protected]:

assert_recognizes(opts, url)
“distribution_channel”=>“download”}> did not match <{“platform”=>“windows”,
“action”=>“download”,
“platform_filter”=>“all”,
“id”=>“5”,
“controller”=>“user/version”,
“distribution_channel”=>“download”}>

Can you post your download route again, is the :software line
missing ?

РJean-Fran̤ois.

6

Even if I change it to a string the error is still occurs:

def test_route
url = “/all/matlab/r2006a/windows/download/5”
opts = {:controller => ‘user/version’, :platform_filter => “all”,
:software => “matlab”, :version => “r2006a”,
:platform => “windows”, :action => “download”,
:distribution_channel => “download”, :id => “5”}

assert_recognizes(opts, url)
end

[ERROR]:
The recognized options <{“software”=>“matlab”,
“platform”=>“windows”,
“action”=>“download”,
“platform_filter”=>“all”,
“id”=>“5”,
“controller”=>“user/version”,
“version”=>“r2006a”,
“distribution_channel”=>“download”}> did not match
<{“platform”=>“windows”,
“action”=>“download”,
“platform_filter”=>“all”,
“id”=>“5”,
“controller”=>“user/version”,
“distribution_channel”=>“download”}>

@michael_daines
No that’s just a typo :frowning:
The actual platform regex is /windows|linux/
As far as the “ltform_filter” That was the emotions feature in my email
client striping off the :stuck_out_tongue:
from :platform_filter.

-Steven

7

Ok I finally got the test to pass. I think what was throwing me was
that I had :id => 5
when it should have been :id => “5” Then I kept frantically changing
the keys and not realize that
there literally wasn’t a match.

def test_download_via_get_before_authentication()
url = “/all/matlab/r2006a/windows/download/5”
opts = {:controller => “user/version”, :platform_filter =>
“all”,
:software => “matlab”, :version => “r2006a”,
:platform => “windows”,
:distribution_channel => “download”,
:action => ‘download’, :id => “5”}

 assert_recognizes(opts, url)

end

[OUTPUT]:
2 tests, 3 assertions, 0 failures, 0 errors

I do have a question though, do the hashes that I pass via the “opts”
argument have to include the total sum of the keys in my route?

if my route is:
map.download
‘:platform_filter/:software/:version/:platform/:distribution_channel/:id’,
:controller => ‘user/version’,
:platform_filter => /all/,
:platform => /windows/,
:distribution_channel => /download/,
:action => ‘download’,
:id => /\d+/

I can’t just pass in {:platform_filter, :software, :version, :platform,
:distribution_channel, :id} like I can with redirect_to()
or url_for() ? I would also need to include the :controller and :action
?

I guess the answer is yes since my test is now passing, but to me this
seem a bit unintuitive. Anyway, thanks to everyone for the help and
patience.

-Steven