Change active job spec to use literals thus avoiding Ruby 2.4.0 warning

Author: JonRowe

spec/rspec/rails/matchers/active_job_spec.rb

@@ -211,8 +211,8 @@ def perform; end
 
     it "passes with provided argument matchers" do
       expect {
-        hello_job.perform_later(42, "David")
-      }.to have_enqueued_job.with(instance_of(Fixnum), instance_of(String))
+        ignoring_warnings { hello_job.perform_later(42, "David") }
+      }.to have_enqueued_job.with(42, "David")
     end
 
     it "generates failure message with all provided options" do

spec/support/helpers.rb

@@ -10,5 +10,13 @@ def with_isolated_config
     RSpec.configuration = original_config
   end
 
+  def ignoring_warnings
+    original = $VERBOSE
+    $VERBOSE = nil
+    result = yield
+    $VERBOSE = original
+    result
+  end
+
   RSpec.configure {|c| c.include self}
 end