Fix Ruby 3+ keyword argument handling in method test dispatch

The method wrapper used |*a, &b| which swallows kwargs in Ruby 3,
breaking methods that accept keyword arguments. Now uses |*a, **kw, &b|.

Also separates NameError (method doesn't exist) from other errors
during method aliasing for clearer error messages, and removes
Ruby 1.8/1.9 compatibility guards.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: trans

HISTORY.md

@@ -1,5 +1,17 @@
 # RELEASE HISTORY
 
+## 0.9.3 / 2026-04-01
+
+Bug fix release. Fixes Ruby 3+ compatibility issues in test method dispatch.
+
+Changes:
+
+* Fix keyword argument handling in method test wrapper (Ruby 3+ kwargs split).
+* Separate NameError from general errors in method aliasing for clearer messages.
+* Include original error message in "not tested" error reports.
+* Remove Ruby 1.8/1.9 compatibility guards.
+
+
 ## 0.9.2 / 2026-03-31
 
 Maintenance release. Modernized project tooling and cleaned up documentation.

lemon.gemspec

@@ -1,6 +1,6 @@
 Gem::Specification.new do |s|
   s.name        = 'lemon'
-  s.version     = '0.9.2'
+  s.version     = '0.9.3'
   s.summary     = 'Pucker-strength Unit Testing'
   s.description = 'Lemon is a unit testing framework that tightly correlates ' \
                   'class to test case and method to test unit.'

lib/lemon.rb

@@ -1,5 +1,5 @@
 module Lemon
-  VERSION = '0.9.2'
+  VERSION = '0.9.3'
 end
 
 # Ruby Test standard location for test objects.

lib/lemon/core_ext.rb

@@ -1,7 +1,2 @@
-if RUBY_VERSION > '1.9'
-  require_relative 'core_ext/kernel'
-  require_relative 'core_ext/module'
-else
-  require 'lemon/core_ext/kernel'
-  require 'lemon/core_ext/module'
-end
+require_relative 'core_ext/kernel'
+require_relative 'core_ext/module'

lib/lemon/test_method.rb

@@ -83,14 +83,18 @@ def run(test, &block)
       begin
         target_class.class_eval do
           alias_method "_lemon_#{target}", target
-          define_method(target) do |*a,&b|
+          define_method(target) do |*a, **kw, &b|
             test.tested = true
-            __send__("_lemon_#{target}",*a,&b)
+            __send__("_lemon_#{target}", *a, **kw, &b)
           end
         end
+      rescue NameError
+        Kernel.eval <<-END, test.to_proc.binding
+          raise NameError, "#{target} is not defined"
+        END
       rescue => error
         Kernel.eval <<-END, test.to_proc.binding
-          raise #{error.class}, "#{target} not tested"
+          raise #{error.class}, "#{target} not tested (#{error.message})"
         END
       end
 
@@ -111,11 +115,7 @@ def run(test, &block)
     #
     #
     def raise_pending(procedure)
-      if RUBY_VERSION < '1.9'
-        Kernel.eval %[raise NotImplementedError, "#{target} not tested"], procedure
-      else
-        Kernel.eval %[raise NotImplementedError, "#{target} not tested"], procedure.binding
-      end
+      Kernel.eval %[raise NotImplementedError, "#{target} not tested"], procedure.binding
     end
 
     #

lib/lemon/test_world.rb

@@ -1,8 +1,4 @@
-if RUBY_VERSION < '1.9'
-  require 'lemon/ignore_callers'
-else
-  require_relative 'ignore_callers'
-end
+require_relative 'ignore_callers'
 
 module Lemon
 
@@ -13,4 +9,3 @@ class World < Module
   end
 
 end
-