In RSpec 2 and 3, you can use the `--profile` flag or add `--profile` to your `.rspec` file. This will track the top 10 slowest examples.

For RSpec 1, you can use `--format o` with `spec` command. It shows a text-based progress bar with profiling of 10 slowest examples. For more details [see this](http://rspec.info/documentation/tools/spec.html).

    rspec --profile -- path/to/file/spec.rb

What do I do wrong here?

    string tmp = @&quot;
        if (UseImageFiles) {
            vCalHeader += &quot;&quot;&lt;td&gt;&lt;img onmousedown=&#39;&#39; src= &#39;{0}cal_fastreverse.gif&#39; width=&#39;13px&#39; height=&#39;9&#39; onmouseover=&#39;changeBorder(this, 0)&#39; onmouseout=&#39;changeBorder(this, 1)&#39; style=&#39;border:1px solid white&#39;&gt;&lt;/td&gt;\n&quot;&quot;; //Year scroller (decrease 1 year)
            calHeight += 22;
        }&quot;;

    string x = &quot;xter&quot;;
    tmp = string.Format(tmp, x);

I get

&gt; Input string was not in correct format

when trying to change `{0}`. I am doing this in C# and WinForms.

&gt; Format Exception was unhandled    
&gt;   Input string was not in correct format   

Troubleshoot tips I get:

&gt;    Make sure your method arguments are in right format. When converting a string to datetime, parse the string to take out  the date before putting each variable into the DateTime object.

string.Format() giving &quot;Input string is not in correct format&quot;

The method should work like `Math.Max()`, but take 3 or more `int` parameters.

Is there a method to find the max of 3 numbers in C#?

One (or a couple) of our tests are taking forever and we&#39;d like to optimize them.

We have say 1000 tests so it&#39;s impractical for me to go through run each file.

Is there an easy to way to find the slow ones?

This is rspec 1.3

How to find which rspec test is taking so long

One (or a couple) of our tests are taking forever and we'd like to optimize them.
We have say 1000 tests so it's impractical for me to go through run each file.
Is there an easy to way to find the slow ones?
This is rspec 1.3

Can someone tell me if I&#39;m just going about the setup the wrong way?

I have the following models that have has_many.through associations:

    class Listing &lt; ActiveRecord::Base
      attr_accessible ... 

      has_many :listing_features
      has_many :features, :through =&gt; :listing_features
  
      validates_presence_of ...
      ...  
    end


    class Feature &lt; ActiveRecord::Base
      attr_accessible ...
  
      validates_presence_of ...
      validates_uniqueness_of ...
  
      has_many :listing_features
      has_many :listings, :through =&gt; :listing_features
    end


    class ListingFeature &lt; ActiveRecord::Base
      attr_accessible :feature_id, :listing_id

      belongs_to :feature  
      belongs_to :listing
    end


I&#39;m using Rails 3.1.rc4, FactoryGirl 2.0.2, factory_girl_rails 1.1.0, and rspec.  Here is my basic rspec rspec sanity check for the `:listing` factory:

    it &quot;creates a valid listing from factory&quot; do
      Factory(:listing).should be_valid
    end

Here is Factory(:listing)

    FactoryGirl.define do
      factory :listing do
        headline    &#39;headline&#39;
        home_desc   &#39;this is the home description&#39;
        association :user, :factory =&gt; :user
        association :layout, :factory =&gt; :layout
        association :features, :factory =&gt; :feature
      end
    end
    

The `:listing_feature` and `:feature` factories are similarly setup.  
If the `association :features` line is commented out, then all my tests pass.  
When it is 

    association :features, :factory =&gt; :feature

the error message is 
`undefined method &#39;each&#39; for #&lt;Feature&gt;`  which I thought made sense to me because because `listing.features` returns an array.  So I changed it to 

    association :features, [:factory =&gt; :feature]

and the error I get now is `ArgumentError: Not registered: features`  Is it just not sensible to be generating factory objects this way, or what am I missing?  Thanks very much for any and all input!

How to set up factory in FactoryBot with has_many association

I have been googling for about 90 minutes now and still don&#39;t have an answer to this.  Where do I set `default_url_options`?  I&#39;ve already set it for `config.action_mailer.default_url_options` to solve this same bug elsewhere, but now I&#39;m getting this error when trying to use a URL helper inside an RSpec spec.  I have no idea where it&#39;s expecting default_url_options to be set.

     Failure/Error: listing_url(listing).should match(/\/\d+-\w+$/)
     RuntimeError:
       Missing host to link to! Please provide :host parameter or set default_url_options[:host]
     # ./spec/routing/listing_routing_spec.rb:9:in `block (3 levels) in &lt;top (required)&gt;&#39;

This code has nothing to do with emails/ActionMailer, it just happens to need a URL instead of a path.

Any ideas?

Rails: Missing host to link to! Please provide :host parameter or set default_url_options[:host]

I am needing to stub the response of a `current_user` method in an Rspec/capybara request spec. The method is defined in `ApplicationController` and is using helper_method. The method should simply return a user id. Within the test, I&#39;d like this method to return the same user id each time. 

Alternatively, I could fix my problem by setting `session[:user_id]` in the spec (which is what `current_user` returns)... but that doesn&#39;t seem to work either. 

Are either of these possible?

Edit:

Here is what I&#39;ve got (it is not working. It just runs the normal current_user method).


    require &#39;spec_helper&#39;

    describe &quot;Login&quot; do
  
       before(:each) do
         ApplicationController.stub(:current_user).and_return(User.first)
       end
  
      it &quot;logs in&quot; do
        visit &#39;/&#39;
        page.should have_content(&quot;Hey there user!&quot;)
      end
  
    end


Also not working:

    require &#39;spec_helper&#39;

    describe &quot;Login&quot; do
  
      before(:each) do
        @mock_controller = mock(&quot;ApplicationController&quot;) 
        @mock_controller.stub(:current_user).and_return(User.first)
      end

      it &quot;logs in&quot; do
        visit &#39;/&#39;
        page.should have_content(&quot;Hey there user!&quot;)
      end
  
    end


How to stub ApplicationController method in request spec

I have started my journey with TDD in Rails and have run into a small issue regarding tests for model validations that I can&#39;t seem to find a solution to. Let&#39;s say I have a User model,

    class User &lt; ActiveRecord::Base
      validates :username, :presence =&gt; true
    end

and a simple test

    it &quot;should require a username&quot; do
      User.new(:username =&gt; &quot;&quot;).should_not be_valid
    end

This correctly tests the presence validation, but what if I want to be more specific? For example, testing full_messages on the errors object..

    it &quot;should require a username&quot; do
      user = User.create(:username =&gt; &quot;&quot;)
      user.errors[:username].should ~= /can&#39;t be blank/
    end

My concern about the initial attempt (using should_not be_valid) is that RSpec won&#39;t produce a descriptive error message. It simply says &quot;expected valid? to return false, got true.&quot; However, the second test example has a minor drawback: it uses the create method instead of the new method in order to get at the errors object.

I would like my tests to be more specific about what they&#39;re testing, but at the same time not have to touch a database.

Anyone have any input?

Rails 3.1, RSpec: testing model validations

Right now if I run my test suite using `rake spec` I get an error:

&lt;pre&gt;
1) SegmentsController GET &#39;index&#39; should work
   Failure/Error: get &#39;index&#39;
   undefined method `locale&#39; for #&lt;User:0x0000012a6bc490&gt;
   # ./spec/controllers/segments_controller_spec.rb:14:
      in `block (3 levels) in &lt;top (required)&gt;&#39;
&lt;/pre&gt;

This is normal as I do have an error :)

The problem is that the trace isn&#39;t very helpful. I know it broke in `segments_controller_spec.rb`, line 14, but this is just where I call the test:

    ### segments_controller_spec.rb:14
    get &#39;index&#39;

I would prefer to have the actual line breaking and the complete trace, not the part in the spec folder.

Running with `--trace` doesn&#39;t help.

Content Type	Original Author	Original Content on Stackoverflow
Question	Brian Armstrong	View Question on Stackoverflow
Solution 1 - Rspec	Ocaj Nires	View Answer on Stackoverflow

How to find which rspec test is taking so long

Rspec Problem Overview

Rspec Solutions

Solution 1 - Rspec

Is there a method to find the max of 3 numbers in C#?

string.Format() giving "Input string is not in correct format"

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