Fixed a documentation error regarding adapter key constant, added a n…

…ew test case for use_adapter? method in serializable resource object

Added testcases to serializer class and fixed errors in documentation.

CHANGELOG.md

@@ -3,6 +3,7 @@
 Breaking changes:
 Features:
 Fixes:
+- [#1501](https://github.com/rails-api/active_model_serializers/pull/1501) Adds tests for SerializableResource::use_adapter?,doc typos (@domitian)
 - [#1488](https://github.com/rails-api/active_model_serializers/pull/1488) Require ActiveSupport's string inflections (@nate00)
 Misc:
 

docs/ARCHITECTURE.md

@@ -56,15 +56,15 @@ High-level overview:
   - `:each_serializer` specifies the serializer for each resource in the collection.
 - For a single resource, the `:serializer` option is the resource serializer.
 - Options are partitioned in serializer options and adapter options.  Keys for adapter options are specified by
-    [`ADAPTER_OPTIONS`](https://github.com/rails-api/active_model_serializers/blob/master/lib/active_model/serializable_resource.rb#L4).
+    [`ADAPTER_OPTION_KEYS`](https://github.com/rails-api/active_model_serializers/blob/master/lib/active_model/serializable_resource.rb#L4).
     The remaining options are serializer options.
 
 Details:
 
 1. **ActionController::Serialization**
   1. `serializable_resource = ActiveModel::SerializableResource.new(resource, options)`
     1. `options` are partitioned into `adapter_opts` and everything else (`serializer_opts`).
-      The adapter options keys for the are defined by `ADAPTER_OPTIONS`.
+      The `adapter_opts`  keys are defined in `ActiveModel::SerializableResource::ADAPTER_OPTION_KEYS`.
 1. **ActiveModel::SerializableResource**
   1. `if serializable_resource.serializer?` (there is a serializer for the resource, and an adapter is used.)
     - Where `serializer?` is `use_adapter? && !!(serializer)`

lib/active_model/serializer.rb

@@ -67,7 +67,7 @@ def self.serializers_cache
 
     # @api private
     # Find a serializer from a class and caches the lookup.
-    # Preferentially retuns:
+    # Preferentially returns:
     #   1. class name appended with "Serializer"
     #   2. try again with superclass, if present
     #   3. nil

test/serializable_resource_test.rb

@@ -23,5 +23,13 @@ def test_serializable_resource_delegates_as_json_to_the_adapter
       options = nil
       assert_equal @adapter.as_json(options), @serializable_resource.as_json(options)
     end
+
+    def test_use_adapter_with_adapter_option
+      assert ActiveModel::SerializableResource.new(@resource, { adapter: 'json' }).use_adapter?
+    end
+
+    def test_use_adapter_with_adapter_option_as_false
+      refute ActiveModel::SerializableResource.new(@resource, { adapter: false }).use_adapter?
+    end
   end
 end