Add rdbgrc file test

Author: st0012

test/debug/rdbg_option_test.rb

@@ -56,6 +56,49 @@ def test_debugger_stops_immediately
     end
   end
 
+  class RCFileTest < TestCase
+    def rc_script
+      "config set skip_path /foo/bar/"
+    end
+
+    def program
+      <<~RUBY
+      1| a = 1
+      RUBY
+    end
+
+    def with_rc_script
+      rc_filename = "~/.rdbgrc"
+      renamed_rc_filename = "~/.rdbgrc.original"
+      File.rename(rc_filename, renamed_rc_filename) if File.exist?(rc_filename)
+      File.open(File.join(Dir.home, ".rdbgrc"), "w") { |f| f.write(rc_script) }
+
+      yield
+    ensure
+      File.rename(renamed_rc_filename, rc_filename) if File.exist?(renamed_rc_filename)
+    end
+
+    def test_debugger_loads_the_rc_file_by_default
+      with_rc_script do
+        run_rdbg(program) do
+          type "config skip_path"
+          assert_line_text(/foo\\\/bar/)
+          type "c"
+        end
+      end
+    end
+
+    def test_debugger_doesnt_load_the_rc_file_with_no_rc
+      with_rc_script do
+        run_rdbg(program, options: "--no-rc") do
+          type "config skip_path"
+          assert_no_line_text(/foo\\\/bar/)
+          type "c"
+        end
+      end
+    end
+  end
+
   class InitScriptTest < TestCase
     TEMPFILE_BASENAME = __FILE__.hash.abs.to_s(16)