Add bin and edit workflow

bin/gems/facets-3.1.0/test/standard/math/test_gcd.rb

@@ -0,0 +1,18 @@
+require 'facets/math/gcd'
+require 'facets/math/factorial'
+
+test_case Math do
+
+  class_method :gcd do
+    test do
+      Math.gcd(4732, 4700).assert == 4
+      Math.gcd(3651, 5023).assert == 1
+      Math.gcd(612221610, 67461255771).assert == 5565651
+    end
+
+    test "on a factorial" do
+      Math.factorial(47).assert == Math.gcd(Math.factorial(90), Math.factorial(47))
+    end
+  end
+
+end