add test for reproducing bug with rendering partial with locals (#24)

spec/extensions/partial_render_spec.rb

@@ -299,6 +299,24 @@
     ])
   end
 
+  it "renders an array with :locals" do
+    json = render(<<~PROPS)
+      emails = [
+        {value: '[email protected]'},
+        {value: '[email protected]'},
+      ]
+      json.array! emails, partial: ['simple_as', locals: {}] do
+      end
+    PROPS
+
+    puts json.inspect
+
+    expect(json).to eql_json([
+      {foo: "[email protected]"},
+      {foo: "[email protected]"}
+    ])
+  end
+
   it "renders an an empty array" do
     json = render(<<~PROPS)
       json.array! [], {partial: 'simple'} do

spec/fixtures/_simple_as.json.props

@@ -0,0 +1 @@
+json.foo simple_as[:value]