Inline shared examples for BeSuccessMatcher

Former shared examples were used only once.
Inlining them makes tests more clear.

spec/rubocop/cop/rspec/be_success_matcher_spec.rb

@@ -14,40 +14,32 @@ describe RuboCop::Cop::RSpec::BeSuccessMatcher do
 
   subject(:cop) { described_class.new }
 
-  shared_examples 'an offensive be_success call' do |content|
-    it "registers an offense for `#{content}`" do
-      inspect_source(content, source_file)
+  shared_examples 'cop' do |good:, bad:|
+    context "using #{bad} call" do
+      it "registers an offense for `#{bad}`" do
+        inspect_source(bad, source_file)
 
         expect(cop.offenses.size).to eq(1)
         expect(cop.offenses.map(&:line)).to eq([1])
-      expect(cop.highlights).to eq([content])
-    end
+        expect(cop.highlights).to eq([bad])
       end
 
-  shared_examples 'an autocorrected be_success call' do |content, autocorrected_content|
-    it "registers an offense for `#{content}` and autocorrects it to `#{autocorrected_content}`" do
-      autocorrected = autocorrect_source(content, source_file)
+      it "registers an offense for `#{bad}` and autocorrects it to `#{good}`" do
+        autocorrected = autocorrect_source(bad, source_file)
 
-      expect(autocorrected).to eql(autocorrected_content)
-    end
+        expect(autocorrected).to eql(good)
       end
-
-  shared_examples 'cop' do |good:, bad:|
-    context "using #{bad} call" do
-      it_behaves_like 'an offensive be_success call', bad
-      it_behaves_like 'an autocorrected be_success call', bad, good
     end
 
     context "using #{good} call" do
       it 'does not register an offense' do
         inspect_source(good)
 
-        expect(cop.offenses.size).to eq(0)
+        expect(cop.offenses).to be_empty
       end
     end
   end
 
-  describe 'using different code examples' do
   it_behaves_like 'cop',
     bad: 'expect(response).to be_success',
     good: 'expect(response).to be_successful'
@@ -71,5 +63,4 @@ describe RuboCop::Cop::RSpec::BeSuccessMatcher do
   it_behaves_like 'cop',
     bad: 'is_expected.not_to be_success',
     good: 'is_expected.not_to be_successful'
-  end
 end