Enhance documentation and tests for VerifiedDoubles cop

While reviewing the following PR, I noticed that there is no documentation for cop_config in the relevant Cop, so I will add it.
- #2112

Author: ydah

docs/modules/ROOT/pages/cops_rspec.adoc

@@ -6598,18 +6598,82 @@ Prefer using verifying doubles over normal doubles.
 ----
 # bad
 let(:foo) do
-  double(method_name: 'returned value')
+  double("ClassName", method_name: 'returned value')
 end
 
 # bad
 let(:foo) do
-  double("ClassName", method_name: 'returned value')
+  spy("ClassName", method_name: 'returned value')
 end
 
 # good
 let(:foo) do
   instance_double("ClassName", method_name: 'returned value')
 end
+
+# good
+let(:foo) do
+  class_double("ClassName", method_name: 'returned value')
+end
+
+# good
+let(:foo) do
+  object_double("some object", method_name: 'returned value')
+end
+----
+
+[#_ignorenameless_-true-_default__-rspecverifieddoubles]
+==== `IgnoreNameless: true (default)`
+
+[source,ruby]
+----
+# good
+let(:foo) do
+  double(method_name: 'returned value')
+end
+
+# good
+let(:foo) do
+  double
+end
+----
+
+[#_ignorenameless_-false_-rspecverifieddoubles]
+==== `IgnoreNameless: false`
+
+[source,ruby]
+----
+# bad
+let(:foo) do
+  double(method_name: 'returned value')
+end
+
+# bad
+let(:foo) do
+  double
+end
+----
+
+[#_ignoresymbolicnames_-false-_default__-rspecverifieddoubles]
+==== `IgnoreSymbolicNames: false (default)`
+
+[source,ruby]
+----
+# bad
+let(:foo) do
+  double(:foo)
+end
+----
+
+[#_ignoresymbolicnames_-true_-rspecverifieddoubles]
+==== `IgnoreSymbolicNames: true`
+
+[source,ruby]
+----
+# good
+let(:foo) do
+  double(:foo)
+end
 ----
 
 [#configurable-attributes-rspecverifieddoubles]

lib/rubocop/cop/rspec/verified_doubles.rb

@@ -10,19 +10,63 @@ module RSpec
       # @example
       #   # bad
       #   let(:foo) do
-      #     double(method_name: 'returned value')
+      #     double("ClassName", method_name: 'returned value')
       #   end
       #
       #   # bad
       #   let(:foo) do
-      #     double("ClassName", method_name: 'returned value')
+      #     spy("ClassName", method_name: 'returned value')
       #   end
       #
       #   # good
       #   let(:foo) do
       #     instance_double("ClassName", method_name: 'returned value')
       #   end
       #
+      #   # good
+      #   let(:foo) do
+      #     class_double("ClassName", method_name: 'returned value')
+      #   end
+      #
+      #   # good
+      #   let(:foo) do
+      #     object_double("some object", method_name: 'returned value')
+      #   end
+      #
+      # @example `IgnoreNameless: true (default)`
+      #   # good
+      #   let(:foo) do
+      #     double(method_name: 'returned value')
+      #   end
+      #
+      #   # good
+      #   let(:foo) do
+      #     double
+      #   end
+      #
+      # @example `IgnoreNameless: false`
+      #   # bad
+      #   let(:foo) do
+      #     double(method_name: 'returned value')
+      #   end
+      #
+      #   # bad
+      #   let(:foo) do
+      #     double
+      #   end
+      #
+      # @example `IgnoreSymbolicNames: false (default)`
+      #   # bad
+      #   let(:foo) do
+      #     double(:foo)
+      #   end
+      #
+      # @example `IgnoreSymbolicNames: true`
+      #   # good
+      #   let(:foo) do
+      #     double(:foo)
+      #   end
+      #
       class VerifiedDoubles < Base
         MSG = 'Prefer using verifying doubles over normal doubles.'
         RESTRICT_ON_SEND = %i[double spy].freeze

spec/rubocop/cop/rspec/verified_doubles_spec.rb

@@ -81,4 +81,20 @@
       end
     RUBY
   end
+
+  it 'ignores class_doubles' do
+    expect_no_offenses(<<~RUBY)
+      it do
+        foo = class_double("Foo")
+      end
+    RUBY
+  end
+
+  it 'ignores object_doubles' do
+    expect_no_offenses(<<~RUBY)
+      it do
+        foo = object_double("Foo")
+      end
+    RUBY
+  end
 end