Fix environment subcommand taking options that where ignored

lib/mutant/cli/command.rb

@@ -97,13 +97,17 @@ def parser
           add_global_options(parser)
           add_subcommands(parser)
 
-          self.class::OPTIONS.each do |method_name|
+          effective_options.each do |method_name|
             2.times { parser.separator(nil) }
             __send__(method_name, parser)
           end
         end
       end
 
+      def effective_options
+        self.class::OPTIONS
+      end
+
       def capture_main(&block)
         @main = block
       end

lib/mutant/cli/command/environment.rb

@@ -56,6 +56,10 @@ def add_matcher(attribute, value)
           set(matcher: @config.matcher.add(attribute, value))
         end
 
+        def effective_options
+          instance_of?(Environment) ? EMPTY_ARRAY : super()
+        end
+
         # rubocop:disable Metrics/MethodLength
         def add_environment_options(parser)
           parser.separator('Environment:')

spec/unit/mutant/cli_spec.rb

@@ -555,6 +555,38 @@ def self.main_body
       }
     end
 
+    make do
+      message = <<~MESSAGE
+        usage: mutant environment <subject|show|irb|test> [options]
+
+        Summary: Environment subcommands
+
+        mutant version: #{Mutant::VERSION}
+
+        Global Options:
+
+                --help                       Print help
+                --version                    Print mutants version
+                --profile                    Profile mutant execution
+                --zombie                     Run mutant zombified
+
+        Available subcommands:
+
+        subject - Subject subcommands
+        show    - Display environment without coverage analysis
+        irb     - Run irb with mutant environment loaded
+        test    - test subcommands
+      MESSAGE
+
+      {
+        arguments:              %w[environment --help],
+        expected_events:        [[:stdout, :puts, message]],
+        expected_exit:          true,
+        expected_print_profile: false,
+        expected_zombie:        false
+      }
+    end
+
     context 'pathname with null bytes' do
       let(:arguments) { %w[util mutation] + ["\0"] }