[rspec-users] strange error on mock proxy

David Chelimsky dchelimsky at gmail.com
Fri Dec 7 12:54:17 EST 2007


I'm away from my computer right now so I can't give you details, but I
know that view examples use mocks under the hood for some things.

On 12/7/07, Brandon Keepers <brandon at collectiveidea.com> wrote:
> I'm banging my head over this really strange error in a view test when
> I run "rake spec".  The weird thing is that I don't get the error when
> I run the spec file by itself.
>
> Here is the spec (I know, fixtures are the devil):
>
> describe "/units/new.html.erb here" do
>    fixtures :units, :accounts, :groups
>    it_should_behave_like '/units/_form'
>
>    before do
>      login_as :cathy
>      assigns[:unit] = @unit = Unit.new
>      @groups = accounts(:dawson).groups
>      render "/units/new.html"
>    end
>
>    it "should render new form" do
>      response.should have_tag("form[action=?][method=post]", units_path)
>    end
>
> end
>
> And the error:
>
> 4)
> ActionView::TemplateError in 'Spec::Rails::Example::ViewExampleGroup/
> units/new.html.erb should render new form'
> You have a nil object when you didn't expect it!
> You might have expected an instance of Array.
> The error occurred while evaluating nil.include?
> On line #13 of units/_form.html.erb
>
>      10:   <% unless @unit.root? -%>
>      11:   <li>
>      12:     <label for="unit_parent_id"><%=h 'Parent Unit'.t %></label>
>      13:     <%= f.select :parent_id, [1,2,3] %>
>      14:     <%#= f.select :parent_id,
>      15:     nested_set_options_for_select(current_account.units.root)
> {|u| "#{'—' * u.level} #{u.name}"} %>
>      16:   </li>
>
>      vendor/plugins/rspec/lib/spec/mocks/proxy.rb:71:in `send'
>      vendor/plugins/rspec/lib/spec/mocks/proxy.rb:71:in
> `message_received'
>      vendor/plugins/rspec/lib/spec/mocks/proxy.rb:100:in `include?'
>      vendor/rails/actionpack/lib/action_view/helpers/
> form_options_helper.rb:304:in `option_value_selected?'
>      vendor/rails/actionpack/lib/action_view/helpers/
> form_options_helper.rb:163:in `options_for_select'
>      vendor/rails/actionpack/lib/action_view/helpers/text_helper.rb:
> 29:in `inject'
>      vendor/rails/actionpack/lib/action_view/helpers/
> form_options_helper.rb:161:in `each'
>      vendor/rails/actionpack/lib/action_view/helpers/
> form_options_helper.rb:161:in `inject'
>      vendor/rails/actionpack/lib/action_view/helpers/
> form_options_helper.rb:161:in `options_for_select'
>      vendor/rails/actionpack/lib/action_view/helpers/
> form_options_helper.rb:358:in `to_select_tag'
>      vendor/rails/actionpack/lib/action_view/helpers/
> form_options_helper.rb:84:in `select'
>      vendor/rails/actionpack/lib/action_view/helpers/
> form_options_helper.rb:409:in `select'
>      app/views//units/_form.html.erb:13:in
> `_run_47app47views47units47_form46html46erb'
>      vendor/rails/actionpack/lib/action_view/base.rb:390:in `send'
>      vendor/rails/actionpack/lib/action_view/base.rb:390:in
> `compile_and_render_template'
>      vendor/rails/actionpack/lib/action_view/base.rb:366:in
> `render_template'
>      vendor/rails/actionpack/lib/action_view/base.rb:316:in
> `globalize_old_render_file'
>      vendor/plugins/globalize/lib/globalize/rails/action_view.rb:18:in
> `render_file'
>      vendor/rails/actionpack/lib/action_view/base.rb:331:in
> `orig_render'
>      vendor/plugins/rspec_on_rails/lib/spec/rails/extensions/
> action_view/base.rb:22:in `render'
>      vendor/rails/actionpack/lib/action_view/partials.rb:117:in
> `render_partial'
>      vendor/rails/actionpack/lib/action_controller/benchmarking.rb:
> 26:in `benchmark'
>      /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/
> ruby/1.8/benchmark.rb:293:in `measure'
>      /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/
> ruby/1.8/benchmark.rb:307:in `realtime'
>      vendor/rails/actionpack/lib/action_controller/benchmarking.rb:
> 26:in `benchmark'
>      vendor/rails/actionpack/lib/action_view/partials.rb:116:in
> `render_partial'
>      vendor/plugins/rspec_on_rails/lib/spec/rails/extensions/
> action_view/base.rb:13:in `render_partial'
>      vendor/rails/actionpack/lib/action_view/base.rb:352:in
> `orig_render'
>      vendor/plugins/rspec_on_rails/lib/spec/rails/extensions/
> action_view/base.rb:22:in `render'
>      app/views//units/new.html.erb:6:in
> `_run_47app47views47units47new46html46erb'
>      vendor/rails/actionpack/lib/action_view/helpers/form_helper.rb:
> 248:in `fields_for'
>      vendor/rails/actionpack/lib/action_view/helpers/form_helper.rb:
> 184:in `form_for'
>      app/views//units/new.html.erb:5:in
> `_run_47app47views47units47new46html46erb'
>      vendor/rails/actionpack/lib/action_view/base.rb:390:in `send'
>      vendor/rails/actionpack/lib/action_view/base.rb:390:in
> `compile_and_render_template'
>      vendor/rails/actionpack/lib/action_view/base.rb:366:in
> `render_template'
>      vendor/rails/actionpack/lib/action_view/base.rb:316:in
> `globalize_old_render_file'
>      vendor/plugins/globalize/lib/globalize/rails/action_view.rb:18:in
> `render_file'
>      vendor/rails/actionpack/lib/action_controller/base.rb:1109:in
> `render_for_file'
>      vendor/rails/actionpack/lib/action_controller/base.rb:861:in
> `render_with_no_layout'
>      vendor/rails/actionpack/lib/action_controller/layout.rb:269:in
> `render_without_benchmark'
>      vendor/rails/actionpack/lib/action_controller/benchmarking.rb:
> 51:in `render'
>      /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/
> ruby/1.8/benchmark.rb:293:in `measure'
>      vendor/rails/actionpack/lib/action_controller/benchmarking.rb:
> 51:in `render'
>      vendor/plugins/rspec_on_rails/lib/spec/rails/example/
> view_example_group.rb:129:in `send'
>      vendor/plugins/rspec_on_rails/lib/spec/rails/example/
> view_example_group.rb:129:in `render'
>      spec/views/units/new.html.erb_spec.rb:11
>      vendor/plugins/rspec/lib/spec/example/example_methods.rb:42:in
> `instance_eval'
>      vendor/plugins/rspec/lib/spec/example/example_methods.rb:42:in
> `eval_each_fail_fast'
>      vendor/plugins/rspec/lib/spec/example/example_methods.rb:41:in
> `each'
>      vendor/plugins/rspec/lib/spec/example/example_methods.rb:41:in
> `eval_each_fail_fast'
>      vendor/plugins/rspec/lib/spec/example/example_group_methods.rb:
> 216:in `run_before_each'
>      vendor/plugins/rspec/lib/spec/example/example_group_methods.rb:
> 316:in `execute_in_class_hierarchy'
>      vendor/plugins/rspec/lib/spec/example/example_group_methods.rb:
> 315:in `each'
>      vendor/plugins/rspec/lib/spec/example/example_group_methods.rb:
> 315:in `execute_in_class_hierarchy'
>      vendor/plugins/rspec/lib/spec/example/example_group_methods.rb:
> 215:in `run_before_each'
>      vendor/plugins/rspec/lib/spec/example/example_methods.rb:65:in
> `before_example'
>      vendor/plugins/rspec/lib/spec/example/example_methods.rb:13:in
> `execute'
>      /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/
> ruby/1.8/timeout.rb:48:in `timeout'
>      vendor/plugins/rspec/lib/spec/example/example_methods.rb:11:in
> `execute'
>      vendor/plugins/rspec/lib/spec/example/example_group_methods.rb:
> 256:in `execute_examples'
>      vendor/plugins/rspec/lib/spec/example/example_group_methods.rb:
> 254:in `each'
>      vendor/plugins/rspec/lib/spec/example/example_group_methods.rb:
> 254:in `execute_examples'
>      vendor/plugins/rspec/lib/spec/example/example_group_methods.rb:
> 115:in `run'
>      vendor/plugins/rspec/lib/spec/runner/example_group_runner.rb:
> 22:in `run'
>      vendor/plugins/rspec/lib/spec/runner/example_group_runner.rb:
> 21:in `each'
>      vendor/plugins/rspec/lib/spec/runner/example_group_runner.rb:
> 21:in `run'
>      vendor/plugins/rspec/lib/spec/runner/options.rb:85:in
> `run_examples'
>      vendor/plugins/rspec/lib/spec/runner/command_line.rb:19:in `run'
>      vendor/plugins/rspec/bin/spec:3
>
>
> I'm not sure why the error is in the mock proxy because this spec
> isn't using mocking at all.
>
> Any ideas?
>
> Brandon


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