login_request_spec.rb

require 'spec_helper'

describe LoginRequest do
  it_should_behave_like "ActiveModel"
  it { should_not be_persisted }

  describe "email" do
    it { should respond_to :email }
    it { should respond_to :email= }
    it { should_not allow_value(nil).for(:email) }
  end

  describe "password" do
    it { should respond_to :password }
    it { should respond_to :password= }
    it { should_not allow_value(nil).for(:password) }
    it { should_not allow_value("1234").for(:password).with_message(/is too short/) }

    it "with a blank password should only return one error" do
      subject.valid?
      subject.errors[:password].should have(1).item
    end
  end

  describe "remember_me" do
    it { should respond_to :remember_me }
    it { should respond_to :remember_me= }
    it { subject.remember_me.should be_true }
    it { expect { subject.remember_me = "" }.to change { subject.remember_me? }.from(true).to(false) }
  end

  describe "#initialize" do
    it "mass assigns email" do
      described_class.new(:email => "[email protected]").email.should == "[email protected]"
    end

    it "mass assigns password" do
      described_class.new(:password => "12345").password.should == "12345"
    end

    it "mass assigns remember_me" do
      described_class.new(:remember_me => false).remember_me.should == false
    end

    it "doesn't raise if it receives an unknown attribute" do
      expect { described_class.new(:unknown => "attribute") }.not_to raise_error
    end
  end

  describe "#authenticate" do
    context "when the record is invalid" do
      before { subject.stub(:valid?).and_return(false) }

      it { subject.authenticate.should be_false }

      it "logs a warning about the failed login" do
        Rails.logger.should_receive(:warn).with(/Failed signin/)
        subject.authenticate
      end
    end

    context "when the record is valid" do
      before { subject.stub(:valid?).and_return(true) }

      it { subject.authenticate.should be_true }

      it "does not log a warning" do
        Rails.logger.should_not_receive(:warn)
        subject.authenticate
      end
    end
  end

  describe "#user" do
    subject { described_class.new(:email => email, :password => password) }
    let(:email) { FactoryGirl.generate(:email) }
    let(:password) { FactoryGirl.build(:user).password }

    context "when the user exists" do
      let(:user) { FactoryGirl.build(:user, :email => email, :password => password) }

      it "asks the User repository for the user" do
        User.stub(:authenticate).with(email, password).and_return(user)
        subject.user.should == user
      end

      it "memoizes the result" do
        User.should_receive(:authenticate).once.and_return(user)
        2.times { subject.user }
      end
    end

    context "when the user does not exist" do
      it "returns nil" do
        User.stub(:authenticate).with(email, password).and_return(nil)
        subject.user.should be_nil
      end

      it "memoizes the result" do
        User.should_receive(:authenticate).once.and_return(nil)
        2.times { subject.user }
      end
    end
  end

  describe "#valid?" do
    context "a fully populated login request" do
      subject { described_class.new(:email => email, :password => password) }
      let(:email) { FactoryGirl.generate(:email) }
      let(:password) { FactoryGirl.build(:user).password }

      context "when the user exists" do
        before { User.stub(:authenticate).with(email, password).and_return(user) }
        let(:user) { FactoryGirl.build(:user, :email => email, :password => password) }

        it { should be_valid }
      end

      context "when the user does not exist" do
        before { User.stub(:authenticate).with(email, password).and_return(nil) }

        it { should_not be_valid }
      end
    end
  end
end