Ignore external encoding when testing BITOP.

Should fix #345.

Author: djanowski

test/commands_on_strings_test.rb

@@ -82,18 +82,20 @@ def test_msetnx_mapped
   end
 
   def test_bitop
-    target_version "2.5.10" do
-      r.set("foo", "a")
-      r.set("bar", "b")
-
-      r.bitop(:and, "foo&bar", "foo", "bar")
-      assert_equal "\x60", r.get("foo&bar")
-      r.bitop(:or, "foo|bar", "foo", "bar")
-      assert_equal "\x63", r.get("foo|bar")
-      r.bitop(:xor, "foo^bar", "foo", "bar")
-      assert_equal "\x03", r.get("foo^bar")
-      r.bitop(:not, "~foo", "foo")
-      assert_equal "\x9E", r.get("~foo")
+    try_encoding("UTF-8") do
+      target_version "2.5.10" do
+        r.set("foo", "a")
+        r.set("bar", "b")
+
+        r.bitop(:and, "foo&bar", "foo", "bar")
+        assert_equal "\x60", r.get("foo&bar")
+        r.bitop(:or, "foo|bar", "foo", "bar")
+        assert_equal "\x63", r.get("foo|bar")
+        r.bitop(:xor, "foo^bar", "foo", "bar")
+        assert_equal "\x03", r.get("foo^bar")
+        r.bitop(:not, "~foo", "foo")
+        assert_equal "\x9E", r.get("~foo")
+      end
     end
   end
 end

test/helper.rb

@@ -91,6 +91,14 @@ def with_external_encoding(encoding)
     end
   end
 
+  def try_encoding(encoding, &block)
+    if defined?(Encoding)
+      with_external_encoding(encoding, &block)
+    else
+      yield
+    end
+  end
+
   class Version
 
     include Comparable