Rewrote tests to tackle more specific stuff

spec/lib/graphql_spec.rb

@@ -5,16 +5,62 @@ describe ConsulSchema do
   let(:variables) { {} }
   let(:result) { ConsulSchema.execute(query_string, context: context, variables: variables) }
 
-  describe "answers simple queries" do
-    let(:query_string) { "{ proposals { edges { node { title } } } }" }
-    let(:context) {
-      { proposal: create(:proposal, title: "A new proposal") }
-    }
+  describe "queries to single elements" do
+    let(:proposal) { create(:proposal, title: 'Proposal Title') }
+    let(:query_string) { "{ proposal(id: #{proposal.id}) { id, title } }" }
 
-    it "can return proposal titles" do
-      proposals = result["data"]["proposals"]["edges"].collect { |edge| edge['node'] }
-      expect(proposals.size).to eq(1)
-      expect(proposals.first['title']).to eq("A new proposal")
+    it "returns fields of numeric type" do
+      returned_proposal = result['data']['proposal']
+      expect(returned_proposal['id']).to eq(proposal.id)
+    end
+
+    it "returns fields of String type" do
+      returned_proposal = result['data']['proposal']
+      expect(returned_proposal['title']).to eq('Proposal Title')
+    end
+
+    describe "supports nested queries" do
+      it "with :has_one associations" do
+        skip "I think this test isn't needed"
+        # TODO: the only has_one associations inside the project are in the User
+        # model (administrator, valuator, etc.). But since I think this data
+        # shouldn't be exposed to the API, there's no point in testing this.
+        #
+        # user = create(:user)
+        # admin = create(:administrator)
+        # user.administrator = admin
+        # query_string = "{ user(id: #{user.id}) { administrator { id } } }"
+        #
+        # result = ConsulSchema.execute(query_string, context: {}, variables: {})
+        # returned_admin = result['data']['user']['administrator']
+        #
+        # expect(returned_admin.id).to eq(admin.id)
+      end
+
+      it "with :belongs_to associations" do
+        user = create(:user)
+        proposal = create(:proposal, author: user)
+        query_string = "{ proposal(id: #{proposal.id}) { author { username } } }"
+
+        result = ConsulSchema.execute(query_string, context: {}, variables: {})
+        returned_proposal = result['data']['proposal']
+
+        expect(returned_proposal['author']['username']).to eq(user.username)
+      end
+
+      it "with :has_many associations" do
+        user = create(:user)
+        proposal = create(:proposal)
+        create(:comment, body: "Blah Blah", author: user, commentable: proposal)
+        create(:comment, body: "I told ya", author: user, commentable: proposal)
+        query_string = "{ proposal(id: #{proposal.id}) { comments { edges { node { body } } } } }"
+
+        result = ConsulSchema.execute(query_string, context: {}, variables: {})
+        comments = result['data']['proposal']['comments']['edges'].collect { |edge| edge['node'] }
+        comment_bodies = comments.collect { |comment| comment['body'] }
+
+        expect(comment_bodies).to match_array(["Blah Blah", "I told ya"])
+      end
     end
   end