Define additional methods to JS::Object for testing

Author: ledsun

packages/gems/js/lib/js.rb

@@ -252,8 +252,9 @@ def await
     ::JS.promise_scheduler.await(promise)
   end
 
-  # https://github.com/rails/rails/blob/5c0b7496ab32c25c80f6d1bdc8b32ec6f75ce1e4/activerecord/lib/active_record/promise.rb#L40-L42
-  [:nil?, :is_a?].each do |method|
+  # I don't know why, but I can't define the respond_to? method in refinements.
+  # I'm defining it here instead.
+  [:nil?, :is_a?, :raise, :respond_to?].each do |method|
     define_method(method, ::Object.instance_method(method))
   end
 

packages/npm-packages/ruby-wasm-wasi/test/unit/test_error.rb

@@ -2,6 +2,8 @@
 require "js"
 
 class JS::TestError < Test::Unit::TestCase
+  using JsObjectTestable
+
   def test_throw_error
     e = assert_raise(JS::Error) { JS.eval("throw new Error('foo')") }
     assert_match /^Error: foo/, e.message

packages/npm-packages/ruby-wasm-wasi/test/unit/test_float.rb

@@ -2,6 +2,8 @@
 require "js"
 
 class JS::TestFloat < Test::Unit::TestCase
+  using JsObjectTestable
+
   def test_to_js
     assert_equal (1.0).to_js, JS.eval("return 1.0;")
     assert_equal (0.5).to_js, JS.eval("return 0.5;")

packages/npm-packages/ruby-wasm-wasi/tools/run-test-unit.mjs

@@ -169,6 +169,18 @@ const test = async (instantiate) => {
 
   await vm.evalAsync(`
     require 'test/unit'
+
+    # Define the methods to be used for unit testing assertions.
+    # Use refinements to limit the scope of influence.
+    require 'pp'
+    module JsObjectTestable
+        refine JS::Object do
+          [:object_id, :pretty_inspect].each do |method|
+            define_method(method, ::Object.instance_method(method))
+          end
+        end
+    end
+
     require_relative '${rootTestFile}'
     ok = Test::Unit::AutoRunner.run
     exit(1) unless ok