Don't use deprecate_constant in ruby versions that haven't added it

Shopify · Sep 1, 2017 · 72280d9 · 72280d9
1 parent 224a791
commit 72280d9
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diff --git a/.travis.yml b/.travis.yml
@@ -2,4 +2,5 @@ language: ruby
 rvm:
   - 2.1
   - 2.2
+  - 2.3
 before_install: gem install bundler -v 1.13.3
diff --git a/lib/graphql/batch/promise.rb b/lib/graphql/batch/promise.rb
@@ -1,4 +1,6 @@
 module GraphQL::Batch
   Promise = ::Promise
-  deprecate_constant :Promise
+  if Gem::Version.new(RUBY_VERSION) >= Gem::Version.new("2.3")
+    deprecate_constant :Promise
+  end
 end
-Original file line number
+Diff line change
@@ Expand Up / @@ -2,4 +2,5 @@ language: ruby @@
     rvm:
       - 2.1
       - 2.2
+      - 2.3
     before_install: gem install bundler -v 1.13.3