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  <title>rcov/ruby/1.8/gems/rspec-core-2.5.1/lib/rspec/core/let.rb</title>
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  <h1>Rspec Steps C0 Coverage Information - RCov</h1>
  <h2>rcov/ruby/1.8/gems/rspec-core-2.5.1/lib/rspec/core/let.rb</h2>

  <div class="report_table_wrapper">
    <table class='report' id='report_table'>
      <thead>
        <tr>
          <th class="left_align">Name</th>
          <th class="right_align">Total Lines</th>
          <th class="right_align">Lines of Code</th>
          <th class="left_align">Total Coverage</th>
          <th class="left_align">Code Coverage</th>
        </tr>
      </thead>
      <tbody>
        <tr>
          <td class="left_align"><a href="rcov-ruby-1_8-gems-rspec-core-2_5_1-lib-rspec-core-let_rb.html">rcov/ruby/1.8/gems/rspec-core-2.5.1/lib/rspec/core/let.rb</a></td>
          <td class='right_align'><tt>101</tt></td>
          <td class='right_align'><tt>26</tt></td>
          <td class="left_align"><div class="percent_graph_legend"><tt class=''>89.11%</tt></div>
        <div class="percent_graph">
          <div class="covered" style="width:89px"></div>
          <div class="uncovered" style="width:11px"></div>
        </div></td>
          <td class="left_align"><div class="percent_graph_legend"><tt class=''>57.69%</tt></div>
        <div class="percent_graph">
          <div class="covered" style="width:58px"></div>
          <div class="uncovered" style="width:42px"></div>
        </div></td>
        </tr>
      </tbody>
    </table>
  </div>

  <h3>Key</h3>

  <div class="key"><pre><span class='marked'>Code reported as executed by Ruby looks like this...</span><span class='marked1'>and this: this line is also marked as covered.</span><span class='inferred'>Lines considered as run by rcov, but not reported by Ruby, look like this,</span><span class='inferred1'>and this: these lines were inferred by rcov (using simple heuristics).</span><span class='uncovered'>Finally, here's a line marked as not executed.</span></pre></div>

  <h3>Coverage Details</h3>

  <table class="details">
    <tbody>

        <tr class="marked">
          <td><pre><a name="line1">1</a> module RSpec</pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line2">2</a>   module Core</pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line3">3</a>     module Let</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line4">4</a> </pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line5">5</a>       module ClassMethods</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line6">6</a>         # Generates a method whose return value is memoized</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line7">7</a>         # after the first call.</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line8">8</a>         #</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line9">9</a>         # == Examples</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line10">10</a>         #</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line11">11</a>         #  describe Thing do</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line12">12</a>         #    let(:thing) { Thing.new }</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line13">13</a>         #</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line14">14</a>         #    it &quot;does something&quot; do</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line15">15</a>         #      # first invocation, executes block, memoizes and returns result</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line16">16</a>         #      thing.do_something</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line17">17</a>         #</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line18">18</a>         #      # second invocation, returns the memoized value</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line19">19</a>         #      thing.should be_something</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line20">20</a>         #    end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line21">21</a>         #  end</pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line22">22</a>         def let(name, &amp;block)</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line23">23</a>           define_method(name) do</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line24">24</a>             __memoized[name] ||= instance_eval(&amp;block)</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line25">25</a>           end</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line26">26</a>         end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line27">27</a> </pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line28">28</a>         # Just like &lt;tt&gt;let()&lt;/tt&gt;, except the block is invoked</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line29">29</a>         # by an implicit &lt;tt&gt;before&lt;/tt&gt; hook. This serves a dual</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line30">30</a>         # purpose of setting up state and providing a memoized</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line31">31</a>         # reference to that state.</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line32">32</a>         #</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line33">33</a>         # == Examples</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line34">34</a>         #</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line35">35</a>         #  class Thing</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line36">36</a>         #    def self.count</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line37">37</a>         #      @count ||= 0</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line38">38</a>         #    end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line39">39</a>         #</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line40">40</a>         #    def self.count=(val)</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line41">41</a>         #      @count += val</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line42">42</a>         #    end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line43">43</a>         #</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line44">44</a>         #    def self.reset_count</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line45">45</a>         #      @count = 0</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line46">46</a>         #    end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line47">47</a>         #</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line48">48</a>         #    def initialize</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line49">49</a>         #      self.class.count += 1</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line50">50</a>         #    end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line51">51</a>         #  end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line52">52</a>         #</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line53">53</a>         #  describe Thing do</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line54">54</a>         #    after(:each) { Thing.reset_count }</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line55">55</a>         #</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line56">56</a>         #    context &quot;using let&quot; do</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line57">57</a>         #      let(:thing) { Thing.new }</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line58">58</a>         #</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line59">59</a>         #      it &quot;is not invoked implicitly&quot; do</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line60">60</a>         #        Thing.count.should == 0</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line61">61</a>         #      end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line62">62</a>         #</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line63">63</a>         #      it &quot;can be invoked explicitly&quot; do</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line64">64</a>         #        thing</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line65">65</a>         #        Thing.count.should == 1</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line66">66</a>         #      end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line67">67</a>         #    end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line68">68</a>         #</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line69">69</a>         #    context &quot;using let!&quot; do</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line70">70</a>         #      let!(:thing) { Thing.new }</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line71">71</a>         #</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line72">72</a>         #      it &quot;is invoked implicitly&quot; do</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line73">73</a>         #        Thing.count.should == 1</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line74">74</a>         #      end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line75">75</a>         #</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line76">76</a>         #      it &quot;returns memoized version on first invocation&quot; do</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line77">77</a>         #        thing</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line78">78</a>         #        Thing.count.should == 1</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line79">79</a>         #      end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line80">80</a>         #    end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line81">81</a>         #  end</pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line82">82</a>         def let!(name, &amp;block)</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line83">83</a>           let(name, &amp;block)</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line84">84</a>           before { __send__(name) }</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line85">85</a>         end</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line86">86</a>       end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line87">87</a> </pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line88">88</a>       module InstanceMethods</pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line89">89</a>         def __memoized # :nodoc:</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line90">90</a>           @__memoized ||= {}</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line91">91</a>         end</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line92">92</a>       end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line93">93</a> </pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line94">94</a>       def self.included(mod) # :nodoc:</pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line95">95</a>         mod.extend ClassMethods</pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line96">96</a>         mod.__send__ :include, InstanceMethods</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line97">97</a>       end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line98">98</a> </pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line99">99</a>     end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line100">100</a>   end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line101">101</a> end</pre></td>
        </tr>

    </tbody>
  </table>

  <p>Generated on Fri Apr 22 17:22:42 -0700 2011 with <a href="http://github.com/relevance/rcov">rcov 0.9.8</a></p>

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