Add option to configure gem (#3)

* Add config

Add specs for config

Bump version to 0.3.0

Update README.md

Update README.md

Run rubocop

Fix typo

* Change config approach to module builder

* Fix default args

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    ez_attributes (0.2.2)
+    ez_attributes (0.3.0)
 
 GEM
   remote: https://rubygems.org/
@@ -93,4 +93,4 @@ DEPENDENCIES
   yard
 
 BUNDLED WITH
-   2.2.25
+   2.2.29

README.md

@@ -58,6 +58,23 @@ user.name
 # => "Matz"
 ```
 
+### Configuration
+You can disable getters
+```ruby
+class User
+  extend EzAttributes.configure(getters: false)
+
+  attributes :name, :age, email: 'guest@user.com'
+end
+
+u = User.new(name: 'Matz', age: 22)
+# => #<User:0x000055bac152f130 @name="Matz", @age=22, @email="guest@user.com">
+
+u.name
+# NoMethodError (undefined method `name' for #<User:0x000055bac152f130>)
+
+```
+
 ## Development
 
 After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake spec` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.

lib/ez_attributes.rb

@@ -15,32 +15,44 @@
 #   => #<User:0x000055bac152f130 @name="Matheus", @age=22, @email="guest@user.com">
 module EzAttributes
   # Gem version
-  VERSION = "0.2.2"
+  VERSION = "0.3.0"
 
   # Attributes that won't have a getter to prevent conflicts with default methods
   EXCEPTIONS = [:class].freeze
 
-  # Defines multiple keyword arguments for a class initializer
-  def attributes(*args, **args_with_default)
-    required_args = args.map { |name| "#{name}:" }
-    optional_args = args_with_default.map { |name, _| "#{name}: __args_with_default[:#{name}]" }
-    init_args = (required_args + optional_args).join(", ")
+  def self.extended(other)
+    other.extend configure
+  end
+
+  def self.configure(getters: true)
+    mod = Module.new
+
+    mod.module_eval do
+      # Defines multiple keyword arguments for a class initializer
+      define_method :attributes do |*args, **args_with_default|
+        required_args = args.map { |name| "#{name}:" }
+        optional_args = args_with_default.map { |name, _| "#{name}: __args_with_default[:#{name}]" }
+        init_args = (required_args + optional_args).join(", ")
 
-    define_method("__args_with_default", -> { Marshal.load(Marshal.dump(args_with_default)) })
-    private :__args_with_default
+        define_method("__args_with_default", -> { Marshal.load(Marshal.dump(args_with_default)) })
+        private :__args_with_default
 
-    all_args = args + args_with_default.keys
-    attr_reader(*(all_args - EXCEPTIONS))
+        all_args = args + args_with_default.keys
+        attr_reader(*(all_args - EXCEPTIONS)) if getters
 
-    class_eval <<~RUBY, __FILE__, __LINE__ + 1
-      def initialize(#{init_args})
-        #{all_args.map { |name| "@#{name} = binding.local_variable_get(:#{name})" }.join("; ")}
+        class_eval <<~RUBY, __FILE__, __LINE__ + 1
+          def initialize(#{init_args})
+            #{all_args.map { |name| "@#{name} = binding.local_variable_get(:#{name})" }.join("; ")}
+          end
+        RUBY
       end
-    RUBY
-  end
 
-  # Defines a single keyword argument for a class initializer
-  def attribute(name)
-    attributes(name)
+      # Defines a single keyword argument for a class initializer
+      define_method :attribute do |name|
+        attributes(name)
+      end
+    end
+
+    mod
   end
 end

spec/ez_attributes_spec.rb

@@ -137,4 +137,46 @@ def change_attr
       expect(obj2.a).to eq [1]
     end
   end
+
+  context "when config is not present" do
+    let(:test_class) do
+      Class.new do
+        extend EzAttributes
+
+        attributes :test
+      end
+    end
+
+    it "defines getters" do
+      expect { test_class.new(test: "test").test }.not_to raise_error
+    end
+  end
+
+  context "when config is present and has getters: true" do
+    let(:test_class) do
+      Class.new do
+        extend EzAttributes.configure(getters: true)
+
+        attributes :test
+      end
+    end
+
+    it "defines getters" do
+      expect { test_class.new(test: "test").test }.not_to raise_error
+    end
+  end
+
+  context "when config is present and has getters: false" do
+    let(:test_class) do
+      Class.new do
+        extend EzAttributes.configure(getters: false)
+
+        attributes :test
+      end
+    end
+
+    it "does not define getters" do
+      expect { test_class.new(test: "test").test }.to raise_error NoMethodError
+    end
+  end
 end