Minor test improvements

spec/regexp_dissassembler_spec.rb

@@ -44,7 +44,7 @@ RSpec.describe Capybara::Selector::RegexpDisassembler, :aggregate_failures do
       /abc?def?g/ => %w[ab de g],
       /d?/ => []
     }.each do |regexp, expected|
-      expect(Capybara::Selector::RegexpDisassembler.new(regexp).substrings).to eq expected
+      expect(described_class.new(regexp).substrings).to eq expected
     end
   end
 
@@ -131,7 +131,7 @@ RSpec.describe Capybara::Selector::RegexpDisassembler, :aggregate_failures do
       /ab(cd|cd)?ef/ => %w[ab ef],
       /ab\\?cd/ => %w[ab cd]
     }.each do |regexp, expected|
-      expect(Capybara::Selector::RegexpDisassembler.new(regexp).substrings).to eq expected
+      expect(described_class.new(regexp).substrings).to eq expected
     end
   end
 

spec/rspec/shared_spec_matchers.rb

@@ -682,12 +682,12 @@ RSpec.shared_examples Capybara::RSpecMatchers do |session, _mode|
     end
 
     it 'treats a given value as a string' do
-      class Foo
+      foo = Class.new do
         def to_s
           'some value'
         end
       end
-      expect(html).to have_field('Text field', with: Foo.new)
+      expect(html).to have_field('Text field', with: foo.new)
     end
 
     it 'supports compounding' do

spec/rspec_spec.rb

@@ -76,7 +76,7 @@ RSpec.describe 'capybara/rspec' do
   context 'Type: Other', type: :other do
     context 'when RSpec::Matchers is included after Capybara::DSL' do
       let(:test_class_instance) do
-        class DSLMatchersTest
+        Class.new do
           include Capybara::DSL
           include RSpec::Matchers
         end.new