Add bin and edit workflow

bin/gems/bundler-4.0.21/lib/bundler/templates/newgem/test/test-unit/newgem_test.rb.tt

@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+require "test_helper"
+
+class <%= config[:constant_name] %>Test < Test::Unit::TestCase
+  test "VERSION" do
+    assert do
+      ::<%= config[:constant_name] %>.const_defined?(:VERSION)
+    end
+  end
+
+  test "something useful" do
+    assert_equal("expected", "actual")
+  end
+end

bin/gems/bundler-4.0.21/lib/bundler/templates/newgem/test/test-unit/test_helper.rb.tt

@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+$LOAD_PATH.unshift File.expand_path("../lib", __dir__)
+require "<%= config[:namespaced_path] %>"
+
+require "test-unit"