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PORspec, Rails - how to test helper method that use params hash?
 

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  1. PORspec, Rails - how to test helper method that use params hash?
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    <p>I want to implement a tagging system similar to stackoverflow, there is a box with a tags at top right corner, and also I have links to delete tag from params hash. my method works correctly in browser. But I can't find a way to test it.</p> <pre><code>def tags_list_with_destroy_links if params[:tags] li = "" p = params[:tags].split("+") # '/tagged/sea+ship+sun' =&gt; ['sea', 'ship', 'sun'] p.map do |t| remove_link = if p.count &gt;= 3 c = p.reject {|item| item == t } a = c.join("+") {:tags =&gt; a} elsif p.count == 2 c = p.reject {|item| item == t } {tags: c[0]} else questions_url end li &lt;&lt; content_tag(:li) do link_to(t, questions_tags_path(t), class: 'tag') + link_to( '', remove_link , class: 'icon-small icons-cross') end end ul = content_tag(:ul, li.html_safe) ul &lt;&lt; tag(:hr) end end </code></pre> <p>I've tried:</p> <pre><code>it 'return list with selected tags' do #Rails.application.routes.url_helpers.stub(:questions_tags).and_return('/questions/tagged/sea+ship+sun') #helper.request.stub(:path).and_return('/questions/tagged/sea+ship+sun') helper.stub(:url_for, {controller:'questions', action: 'index', tags:'sea+ship+sun'} ).and_return('/questions/tagged/sea+ship+sun') helper.params[:tags] = 'sea+ship+sun' helper.tags_list_with_destroy_links.should == 'list_with_tags' end </code></pre> <p>but it return: </p> <pre><code>&lt;a class=\"tag\" href=\"/questions/tagged/sea+ship+sun\"&gt;sea&lt;/a&gt;&lt;a class=\"icon-small icons-cross\" href=\"/questions/tagged/sea+ship+sun\"&gt;&lt;/a&gt;&lt;/li&gt; </code></pre> <p>and shoud return remove link as </p> <blockquote> <p>href="/questions/tagged/ship+sun" without sea</p> </blockquote> <p>I would appreciate any advice</p>
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    1. CO(1) A space won't always appear as `+`, sometimes it will be `%20`. (2) Helpers shouldn't (IMO) be looking at `params`, if you passed `params` to your helper as an argument then you get a cleaner design and your testing problem goes away.
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    2. COThanks for advice, I suddenly realized that I put just hash in remove_link without any reference to controller and action, so adding questions_tags_url tags: '...' resolved problem
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