Very basic specs for stub + mocks support

adambeynon · adambeynon · commit 1b38065e8be7 · 2013-11-09T11:52:25.000Z
diff --git a/Gemfile b/Gemfile
@@ -3,8 +3,10 @@ gemspec
 
 gem 'rake'
 
-gem 'rspec', '3.0.0.beta1'
-gem 'rspec-support', '3.0.0.beta1'
-gem 'rspec-core', '3.0.0.beta1'
+gem 'opal', :github => 'opal/opal'
+
+gem 'rspec',              '3.0.0.beta1'
+gem 'rspec-support',      '3.0.0.beta1'
+gem 'rspec-core',         '3.0.0.beta1'
+gem 'rspec-mocks',        '3.0.0.beta1'
 gem 'rspec-expectations', '3.0.0.beta1'
-gem 'rspec-mocks', '3.0.0.beta1'
diff --git a/opal/opal/rspec/fixes.rb b/opal/opal/rspec/fixes.rb
@@ -62,3 +62,17 @@ def self.disambiguate(name, const_scope)
     name
   end
 end
+
+# Opal does not support ObjectSpace, so force object __id__'s
+class RSpec::Mocks::Space
+  def id_for(object)
+    object.__id__
+  end
+end
+
+# Buggy under Opal?
+class RSpec::Mocks::MethodDouble
+  def save_original_method!
+    @original_method ||= @method_stasher.original_method
+  end
+end
diff --git a/spec/mock_spec.rb b/spec/mock_spec.rb
@@ -0,0 +1,37 @@
+describe "RSpec mocks" do
+  describe "stubs" do
+    it "can stub basic methods" do
+      obj = Object.new
+      expect(obj).to receive(:foo) { 100 }
+      obj.foo.should == 100
+    end
+
+    it "raises an exception when stub returns wrong value" do
+      expect {
+        obj = Object.new
+        expect(obj).to receive(:bar) { 400 }
+        obj.bar.should == 42
+      }.to raise_error(Exception)
+    end
+  end
+
+  describe "doubles" do
+    it "define methods on double" do
+      person = double("person", :name => "Adam")
+      expect(person.name).to eq("Adam")
+    end
+
+    it "once" do
+      person = double("person")
+      expect(person).to receive(:name).once
+      person.name.should eq(nil)
+    end
+
+    it "twice" do
+      person = double("person")
+      expect(person).to receive(:name).twice
+      person.name
+      person.name
+    end
+  end
+end
