Add Model changes to work with votation_types

spec/models/poll/pair_answer_spec.rb

@@ -0,0 +1,131 @@
+require "rails_helper"
+
+describe Poll::PairAnswer do
+
+  describe "validations" do
+
+    let(:pair_answer) { build(:poll_pair_answer) }
+
+    it "is valid" do
+      expect(pair_answer).to be_valid
+    end
+
+    it "is not valid wihout a question" do
+      pair_answer.question = nil
+
+      expect(pair_answer).not_to be_valid
+    end
+
+    it "is not valid without an author" do
+      pair_answer.author = nil
+
+      expect(pair_answer).not_to be_valid
+    end
+
+    it "is valid if answer_left is included in the Poll::Question's question_answers list" do
+      question = create(:poll_question)
+      answer1 = create(:poll_question_answer, title: "One", question: question)
+      answer2 = create(:poll_question_answer, title: "Two", question: question)
+      answer3 = create(:poll_question_answer, title: "Three")
+
+      expect(build(:poll_pair_answer, question: question, answer_left: answer1)).to be_valid
+      expect(build(:poll_pair_answer, question: question, answer_left: answer2)).to be_valid
+      expect(build(:poll_pair_answer, question: question, answer_left: answer3)).not_to be_valid
+    end
+
+    it "is valid if answer_right is included in the Poll::Question's question_answers list" do
+      question = create(:poll_question)
+      answer1 = create(:poll_question_answer, title: "One", question: question)
+      answer2 = create(:poll_question_answer, title: "Two", question: question)
+      answer3 = create(:poll_question_answer, title: "Three")
+
+      expect(build(:poll_pair_answer, question: question, answer_right: answer1)).to be_valid
+      expect(build(:poll_pair_answer, question: question, answer_right: answer2)).to be_valid
+      expect(build(:poll_pair_answer, question: question, answer_right: answer3)).not_to be_valid
+    end
+  end
+
+  context "scopes" do
+    let(:pair_answer_1) { create(:poll_pair_answer) }
+    let(:pair_answer_2) { create(:poll_pair_answer) }
+
+    describe "#by_author" do
+
+      it "returns pair_answers associated to an user" do
+        author = pair_answer_1.author
+
+        expect(described_class.by_author(author)).to include(pair_answer_1)
+        expect(described_class.by_author(author)).not_to include(pair_answer_2)
+      end
+
+    end
+
+    describe "#by_question" do
+
+      it "returns pair_answers associated to a question" do
+        question = pair_answer_1.question
+
+        expect(described_class.by_question(question)).to include(pair_answer_1)
+        expect(described_class.by_question(question)).not_to include(pair_answer_2)
+      end
+    end
+
+  end
+
+
+  describe "#generate_pair" do
+    let(:user) { create(:user) }
+    let(:question) { create(:poll_question) }
+
+    context "without question_answers" do
+
+      it "assigns nil value to pair_answers" do
+        pair_answer = described_class.generate_pair(question, user)
+
+        expect(pair_answer).to be_a Poll::PairAnswer
+        expect(pair_answer.question).to eq(question)
+        expect(pair_answer.author).to eq(user)
+        expect(pair_answer.answer_left).to be_nil
+        expect(pair_answer.answer_right).to be_nil
+      end
+    end
+
+    context "With question answers" do
+      let!(:answer1) { create(:poll_question_answer, question: question) }
+
+      it "assigns only right question if only has one question_answer" do
+        pair_answer = described_class.generate_pair(question, user)
+
+        expect(pair_answer).to be_a Poll::PairAnswer
+        expect(pair_answer.question).to eq(question)
+        expect(pair_answer.author).to eq(user)
+        expect(pair_answer.answer_left).to eq(answer1)
+        expect(pair_answer.answer_right).to be_nil
+      end
+
+      it "assigns random values if question has some question_answer" do
+        create(:poll_question_answer, question: question)
+
+        pair_answer = described_class.generate_pair(question, user)
+
+        expect(pair_answer).to be_a Poll::PairAnswer
+        expect(pair_answer.question).to eq(question)
+        expect(pair_answer.author).to eq(user)
+        expect(pair_answer.answer_left).to be_a Poll::Question::Answer
+        expect(pair_answer.answer_right).to be_a Poll::Question::Answer
+        expect(pair_answer.answer_left).not_to eq(pair_answer.answer_right)
+      end
+    end
+  end
+
+  describe "#answers" do
+    let(:pair_answer) { create(:poll_pair_answer) }
+
+    it "returns and array of answers" do
+      expect(pair_answer.answers).to be_a Array
+      expect(pair_answer.answers[0]).to eq(pair_answer.answer_left)
+      expect(pair_answer.answers[1]).to eq(pair_answer.answer_right)
+    end
+  end
+
+end