98 lines
3.2 KiB
Ruby
98 lines
3.2 KiB
Ruby
# frozen_string_literal: true
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require 'spec_helper'
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RSpec.describe Experiment do
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subject { build(:experiment) }
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describe 'associations' do
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it { is_expected.to have_many(:experiment_users) }
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end
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describe 'validations' do
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it { is_expected.to validate_presence_of(:name) }
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it { is_expected.to validate_uniqueness_of(:name) }
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it { is_expected.to validate_length_of(:name).is_at_most(255) }
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end
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describe '.add_user' do
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let_it_be(:experiment_name) { :experiment_key }
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let_it_be(:user) { 'a user' }
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let_it_be(:group) { 'a group' }
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subject(:add_user) { described_class.add_user(experiment_name, group, user) }
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context 'when an experiment with the provided name does not exist' do
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it 'creates a new experiment record' do
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allow_next_instance_of(described_class) do |experiment|
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allow(experiment).to receive(:record_user_and_group).with(user, group)
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end
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expect { add_user }.to change(described_class, :count).by(1)
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end
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it 'forwards the user and group_type to the instance' do
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expect_next_instance_of(described_class) do |experiment|
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expect(experiment).to receive(:record_user_and_group).with(user, group)
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end
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add_user
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end
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end
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context 'when an experiment with the provided name already exists' do
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let_it_be(:experiment) { create(:experiment, name: experiment_name) }
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it 'does not create a new experiment record' do
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allow_next_found_instance_of(described_class) do |experiment|
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allow(experiment).to receive(:record_user_and_group).with(user, group)
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end
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expect { add_user }.not_to change(described_class, :count)
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end
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it 'forwards the user and group_type to the instance' do
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expect_next_found_instance_of(described_class) do |experiment|
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expect(experiment).to receive(:record_user_and_group).with(user, group)
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end
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add_user
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end
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end
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end
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describe '#record_user_and_group' do
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let_it_be(:experiment) { create(:experiment) }
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let_it_be(:user) { create(:user) }
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let(:group) { :control }
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subject(:record_user_and_group) { experiment.record_user_and_group(user, group) }
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context 'when an experiment_user does not yet exist for the given user' do
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it 'creates a new experiment_user record' do
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expect { record_user_and_group }.to change(ExperimentUser, :count).by(1)
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end
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it 'assigns the correct group_type to the experiment_user' do
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record_user_and_group
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expect(ExperimentUser.last.group_type).to eq('control')
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end
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end
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context 'when an experiment_user already exists for the given user' do
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before do
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# Create an existing experiment_user for this experiment and the :control group
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experiment.record_user_and_group(user, :control)
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end
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it 'does not create a new experiment_user record' do
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expect { record_user_and_group }.not_to change(ExperimentUser, :count)
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end
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context 'but the group_type has changed' do
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let(:group) { :experimental }
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it 'updates the existing experiment_user record' do
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expect { record_user_and_group }.to change { ExperimentUser.last.group_type }
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end
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end
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end
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end
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end
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