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-rw-r--r--test/spec_mime.rb6
1 files changed, 4 insertions, 2 deletions
diff --git a/test/spec_mime.rb b/test/spec_mime.rb
index cd40b4b5..8d1ca256 100644
--- a/test/spec_mime.rb
+++ b/test/spec_mime.rb
@@ -1,4 +1,6 @@
-require 'minitest/autorun'
+# frozen_string_literal: true
+
+require 'minitest/global_expectations/autorun'
 require 'rack/mime'
 
 describe Rack::Mime do
@@ -19,7 +21,7 @@ describe Rack::Mime do
   end
 
   it "should support null fallbacks" do
-    Rack::Mime.mime_type('.nothing', nil).must_equal nil
+    Rack::Mime.mime_type('.nothing', nil).must_be_nil
   end
 
   it "should match exact mimes" do