lib/transproc/rspec.rb in transproc-0.3.0 vs lib/transproc/rspec.rb in transproc-0.3.1

@@ -3,57 +3,62 @@
 # ==============================================================================
 # Examples for testing transproc functions
 # ==============================================================================
 
 shared_context :call_transproc do
-  let!(:initial)  { input.dup rescue input      }
-  let!(:function) { described_class[*arguments] }
-  let!(:result)   { function[input]             }
+  let!(:__initial__) { input.dup rescue input      }
+  let!(:__fn__)      { described_class[*arguments] }
+  subject { __fn__[input] }
 end
 
 shared_examples :transforming_data do
+  include_context :call_transproc
+
   it '[returns the expected output]' do
-    expect(result).to eql(output), <<-REPORT.gsub(/.+\|/, "")
+    expect(subject).to eql(output), <<-REPORT.gsub(/.+\|/, "")
       |
       |fn = #{described_class}#{Array[*arguments]}
       |
       |fn[#{input}]
       |
       |  expected: #{output}
-      |       got: #{result}
+      |       got: #{subject}
     REPORT
   end
 end
 
 shared_examples :transforming_immutable_data do
   include_context :call_transproc
 
   it_behaves_like :transforming_data
 
   it '[keeps input unchanged]' do
-    expect(input).to eql(initial), <<-REPORT.gsub(/.+\|/, "")
-      |
-      |fn = #{described_class}#{Array[*arguments]}
-      |
-      |expected: not to change #{initial}
-      |     got: changed it to #{input}
-    REPORT
+    expect { subject }
+      .not_to change { input }, <<-REPORT.gsub(/.+\|/, "")
+        |
+        |fn = #{described_class}#{Array[*arguments]}
+        |
+        |expected: not to change #{__initial__}
+        |     got: changed it to #{input}
+      REPORT
   end
 end
 
 shared_examples :mutating_input_data do
   include_context :call_transproc
 
   it_behaves_like :transforming_data
 
   it '[changes input]' do
-    expect(input).to eql(output), <<-REPORT.gsub(/.+\|/, "")
-      |
-      |fn = #{described_class}#{Array[*arguments]}
-      |
-      |fn[#{input}]
-      |
-      |expected: to change input to #{output}
-      |     got: #{input}
-    REPORT
+    expect { subject }
+      .to change { input }
+      .to(output), <<-REPORT.gsub(/.+\|/, "")
+        |
+        |fn = #{described_class}#{Array[*arguments]}
+        |
+        |fn[#{input}]
+        |
+        |expected: to change input to #{output}
+        |     got: #{input}
+      REPORT
   end
 end