add a DSL module to include in rspec examples

Author: ajjahn

lib/react/test.rb

@@ -0,0 +1,16 @@
+require 'react/test/session'
+require 'react/test/dsl'
+
+module React
+  module Test
+    class << self
+      def current_session
+        @current_session ||= Session.new
+      end
+
+      def reset_session!
+        @current_session = nil
+      end
+    end
+  end
+end

lib/react/test/dsl.rb

@@ -0,0 +1,17 @@
+require 'react/test'
+
+module React
+  module Test
+    module DSL
+      def component
+        React::Test.current_session
+      end
+
+      Session::DSL_METHODS.each do |method|
+        define_method method do |*args, &block|
+          component.public_send(method, *args, &block)
+        end
+      end
+    end
+  end
+end

spec/react/test/dsl_spec.rb

@@ -0,0 +1,43 @@
+require 'spec_helper'
+
+if opal?
+  RSpec.describe React::Test::DSL do
+    describe 'the DSL' do
+      let(:session) { Class.new { include React::Test::DSL }.new }
+
+      before do
+        React::Test.reset_session!
+
+        stub_const 'Greeter', Class.new
+        Greeter.class_eval do
+          include React::Component
+
+          params do
+            optional :message
+            optional :from
+          end
+
+          def render
+            span { "Hello #{params.message}" }
+          end
+        end
+      end
+
+      it 'is possible to include it in another class' do
+        session.mount(Greeter)
+        expect(session.instance).to be_a(Greeter)
+      end
+
+      it "should provide a 'component' shortcut for more expressive tests" do
+        session.component.mount(Greeter)
+        expect(session.component.instance).to be_a(Greeter)
+      end
+
+      React::Test::Session::DSL_METHODS.each do |method|
+        it "responds to all DSL method: #{method}" do
+          expect(session).to respond_to(method)
+        end
+      end
+    end
+  end
+end