Refactor tests specs with shared examples

spec/producer/core/test_spec.rb

@@ -2,82 +2,6 @@ require 'spec_helper'
 
 module Producer::Core
   describe Test do
-    let(:env)         { Env.new }
+    it_behaves_like 'test'
-    let(:arguments)   { [:some, :arguments] }
-    subject(:test)    { Test.new(env, *arguments) }
-
-    describe '#initialize' do
-      it 'assigns the env' do
-        expect(test.env).to be env
-      end
-
-      it 'assigns the arguments' do
-        expect(test.arguments).to eq arguments
-      end
-
-      it 'assigns negated as false by default' do
-        expect(test).to_not be_negated
-      end
-
-      context 'when negated option is true' do
-        subject(:test) { described_class.new(env, *arguments, negated: true) }
-
-        it 'assigns negated as true' do
-          expect(test).to be_negated
-        end
-      end
-    end
-
-    describe '#remote' do
-      it 'returns env remote' do
-        expect(test.remote).to be test.env.remote
-      end
-    end
-
-    describe '#fs' do
-      it 'returns env remote fs' do
-        expect(test.fs).to be test.env.remote.fs
-      end
-    end
-
-    describe '#negated?' do
-      it 'returns false' do
-        expect(test.negated?).to be false
-      end
-
-      context 'when test is negated' do
-        subject(:test) { described_class.new(env, *arguments, negated: true) }
-
-        it 'returns true' do
-          expect(test.negated?).to be true
-        end
-      end
-    end
-
-    describe '#pass?' do
-      it 'returns true when #verify is true' do
-        allow(test).to receive(:verify) { true }
-        expect(test.pass?).to be true
-      end
-
-      it 'returns false when #verify is false' do
-        allow(test).to receive(:verify) { false }
-        expect(test.pass?).to be false
-      end
-
-      context 'when test is negated' do
-        subject(:test) { described_class.new(env, *arguments, negated: true) }
-
-        it 'returns false when #verify is true' do
-          allow(test).to receive(:verify) { true }
-          expect(test.pass?).to be false
-        end
-
-        it 'returns true when #verify is false' do
-          allow(test).to receive(:verify) { false }
-          expect(test.pass?).to be true
-        end
-      end
-    end
   end
 end

spec/producer/core/tests/file_contains_spec.rb

@@ -8,9 +8,7 @@ module Producer::Core
       let(:content)   { 'some_content' }
       subject(:test)  { FileContains.new(env, filepath, content) }
 
-      it 'is a kind of test' do
+      it_behaves_like 'test'
-        expect(test).to be_a Test
-      end
 
       describe '#verify' do
         let(:fs) { double 'fs' }

spec/producer/core/tests/has_dir_spec.rb

@@ -7,9 +7,7 @@ module Producer::Core
       let(:path)        { 'some_directory' }
       subject(:has_dir) { HasDir.new(env, path) }
 
-      it 'is a kind of test' do
+      it_behaves_like 'test'
-        expect(has_dir).to be_a Test
-      end
 
       describe '#verify', :ssh do
         before { sftp_story }

spec/producer/core/tests/has_env_spec.rb

@@ -7,9 +7,7 @@ module Producer::Core
       let(:variable_name) { :some_variable_name }
       subject(:has_env)   { HasEnv.new(env, variable_name) }
 
-      it 'is a kind of test' do
+      it_behaves_like 'test'
-        expect(has_env).to be_a Test
-      end
 
       describe '#verify' do
         let(:environment) { double 'environment' }

spec/producer/core/tests/has_file_spec.rb

@@ -7,9 +7,7 @@ module Producer::Core
       let(:filepath)      { 'some_file' }
       subject(:has_file)  { HasFile.new(env, filepath) }
 
-      it 'is a kind of test' do
+      it_behaves_like 'test'
-        expect(has_file).to be_a Test
-      end
 
       describe '#verify', :ssh do
         before { sftp_story }

spec/support/shared_test.rb

@@ -0,0 +1,81 @@
+module Producer::Core
+  shared_examples 'test' do
+    let(:env)         { Env.new }
+    let(:arguments)   { [:some, :arguments] }
+    subject(:test)    { described_class.new(env, *arguments) }
+
+    describe '#initialize' do
+      it 'assigns the env' do
+        expect(test.env).to be env
+      end
+
+      it 'assigns the arguments' do
+        expect(test.arguments).to eq arguments
+      end
+
+      it 'assigns negated as false by default' do
+        expect(test).to_not be_negated
+      end
+
+      context 'when negated option is true' do
+        subject(:test) { described_class.new(env, *arguments, negated: true) }
+
+        it 'assigns negated as true' do
+          expect(test).to be_negated
+        end
+      end
+    end
+
+    describe '#remote' do
+      it 'returns env remote' do
+        expect(test.remote).to be test.env.remote
+      end
+    end
+
+    describe '#fs' do
+      it 'returns env remote fs' do
+        expect(test.fs).to be test.env.remote.fs
+      end
+    end
+
+    describe '#negated?' do
+      it 'returns false' do
+        expect(test.negated?).to be false
+      end
+
+      context 'when test is negated' do
+        subject(:test) { described_class.new(env, *arguments, negated: true) }
+
+        it 'returns true' do
+          expect(test.negated?).to be true
+        end
+      end
+    end
+
+    describe '#pass?' do
+      it 'returns true when #verify is true' do
+        allow(test).to receive(:verify) { true }
+        expect(test.pass?).to be true
+      end
+
+      it 'returns false when #verify is false' do
+        allow(test).to receive(:verify) { false }
+        expect(test.pass?).to be false
+      end
+
+      context 'when test is negated' do
+        subject(:test) { described_class.new(env, *arguments, negated: true) }
+
+        it 'returns false when #verify is true' do
+          allow(test).to receive(:verify) { true }
+          expect(test.pass?).to be false
+        end
+
+        it 'returns true when #verify is false' do
+          allow(test).to receive(:verify) { false }
+          expect(test.pass?).to be true
+        end
+      end
+    end
+  end
+end