restructure specs for CookieJar. Adds specs for #find method

spec/cookie_jar_spec.rb

@@ -15,20 +15,34 @@ describe Capybara::Driver::Webkit::CookieJar do
 
   subject { Capybara::Driver::Webkit::CookieJar.new(browser) }
 
-  describe "#[]" do
-    it "returns the right cookie value for every given domain/path" do
-      subject["cookie1", "example.org"].should == "1"
-      subject["cookie1", "www.facebook.com"].should == "3"
-      subject["cookie2", "sub1.example.org"].should == "4"
+  describe "#find" do
+    it "returns a cookie object" do
+      subject.find("cookie1", "www.facebook.com").domain.should == ".facebook.com"
+    end
+
+    it "returns the right cookie for every given domain/path" do
+      subject.find("cookie1", "example.org").value.should == "1"
+      subject.find("cookie1", "www.facebook.com").value.should == "3"
+      subject.find("cookie2", "sub1.example.org").value.should == "4"
     end
 
     it "does not return a cookie from other domain" do
-      subject["cookie2", "www.example.org"].should == nil
+      subject.find("cookie2", "www.example.org").should == nil
     end
 
     it "respects path precedence rules" do
-      subject["cookie1", "www.example.org"].should == "1"
-      subject["cookie1", "www.example.org", "/dir1/123"].should == "2"
+      subject.find("cookie1", "www.example.org").value.should == "1"
+      subject.find("cookie1", "www.example.org", "/dir1/123").value.should == "2"
+    end
+  end
+
+  describe "#[]" do
+    it "returns the first matching cookie's value" do
+      subject["cookie1", "example.org"].should == "1"
+    end
+
+    it "returns nil if no cookie is found" do
+      subject["notexisting"].should == nil
     end
   end
 end