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copied!<p>Rails and RSpec equality tests have a variety of choices.</p> <p>Rails 3.2 ActiveRecord::Base uses the <code>==</code> equality matcher. </p> <p>It returns true two different ways:</p> <ul> <li>If <code>self</code> is the same exact object as the comparison object</li> <li>If <code>self</code> is the same type as the comparison object and has the same ID</li> </ul> <p>Note that ActiveRecord::Base has the <code>==</code> method which is aliased as <code>eql?</code>. This is different than typical Ruby objects, which define <code>==</code> and <code>eql?</code> differently.</p> <p>RSpec 2.0 has these equality matchers in rspec-expectations:</p> <pre><code>a.should equal(b) # passes if a.equal?(b) a.should eql(b) # passes if a.eql?(b) a.should == b # passes if a == b </code></pre> <p>RSpec also has two equality matchers intended to have more of a DSL feel to them:</p> <pre><code>a.should be(b) # passes if a.equal?(b) a.should eq(b) # passes if a == b </code></pre> <p>In your example you're creating a record then finding it.</p> <p>So you have two choices for testing <code>#find_by_name</code>:</p> <ul> <li><p>To test if it retrieves the exact same object <em>OR</em> an equivalent Person record with the same ID, then use <code>should ==</code> or its equivalent <code>a.should eql</code> or its DSL version <code>should eq</code></p></li> <li><p>To test if it uses the exact same object <em>NOT</em> an equivalent Person record with the same ID, then use <code>should equal</code> or its DSL version <code>should be</code></p></li> </ul>

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