Merge pull request #5 from MatteoPierro/configure_via_accessors

feat: configure gem using accessors

README.md

@@ -34,6 +34,17 @@ JwkLoader.configure do |config|
 end
 ```
 
+or in alternative
+
+```ruby
+require "jwt-loader"
+
+JwkLoader.configure do |config|
+  config.cache = YetAnotherCache.new
+  config.cache_grace_period = 999
+end
+```
+
 ## Development
 
 After checking out the repo, run `bundle install` to install dependencies. Then, run `bundle exec rspec` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.

lib/jwk_loader/config/config.rb

@@ -16,6 +16,16 @@ def [](key)
       registry[key] || (raise ConfigurationNotFound, key)
     end
 
+    def method_missing(name, *args)
+      return send(:[]=, name.to_s[0..-2].to_sym, *args) if name.to_s.end_with?("=")
+
+      send(:[], name, *args)
+    end
+
+    def respond_to_missing?(_name, _include_private)
+      true
+    end
+
     private
 
     def registry

spec/jwk-loader_spec.rb

@@ -38,6 +38,20 @@ class YetAnotherCache; end
         expect(provider.cache).to be_a(YetAnotherCache)
         expect(provider.cache_grace_period).to eq(cache_grace_period)
       end
+
+      context "when using accessors" do
+        before do
+          JwkLoader.configure do |cfg|
+            cfg.cache = cache
+            cfg.cache_grace_period = cache_grace_period
+          end
+        end
+
+        it "returns a provider with the given configuration" do
+          expect(provider.cache).to be_a(YetAnotherCache)
+          expect(provider.cache_grace_period).to eq(cache_grace_period)
+        end
+      end
     end
   end
 end

spec/jwk_loader/config/config_spec.rb

@@ -18,4 +18,19 @@
       expect { config["key"] }.to raise_error(JwkLoader::Config::ConfigurationNotFound)
     end
   end
+
+  describe ".some_value_123" do
+    let(:value) { Object.new }
+
+    it "adds a cache configuration" do
+      config.some_value_123 = value
+      expect(config.some_value_123).to be(value)
+    end
+  end
+
+  describe ".foo(1)" do
+    it "raises an ArgumentError" do
+      expect { config.foo(1) }.to raise_error(ArgumentError)
+    end
+  end
 end