# ྫ describe Stack do let!(:stack) { Stack.new } describe '#push' do context 'จࣈྻΛpushͨ͠ͱ͖' do before { stack.push('value') } it 'ฦΓ͕pushͨ͠Ͱ͋Δ͜ͱ' do expect(stack).to eq 'value' end end context 'nilΛpushͨ͠߹' do it 'ArgumentErrorʹͳΔ͜ͱ' do expect { stack.push(nil) }.to raise_error(ArgumentError) end end end describe '#pop' do # ུ end end
# ҰݟDRYʹͰ͖ͦ͏ʹݟ͑Δ describe 'sample specs' do context 'a' do # ... end context 'b' do let!(:need_in_b_and_c) { ... } # ... end context 'c' do let!(:need_in_b_and_c) { ... } # ... end end
# Ͱ͜͏มߋͯ͠͠·͏ͷNG # ͦΕͧΕͷcontextͰඞཁͳσʔλͱඞཁͳ͍σʔλΛͰબΓ͚Δඞཁ͕ग़ͯ͘Δ describe 'sample specs' do let!(:need_in_b_and_c) { ... } context 'a' do # ... end context 'b' do # ... end context 'c' do # ... end end
ѱ͍ྫ FactoryGirl.define do factory :user do sequence(:name) { |i| "username#{i}" } after(:create) do |user, evaluator| create_list(:post, 2, user: user) end end end
RSpec.describe User, type: :model do describe '#posts_ordered_by_popularity' do let!(:user) { create(:user) } let!(:post_popular) do post = user.posts[0] post.update(popularity: 5) post end let!(:post_not_popular) do post = user.posts[1] post.update(popularity: 1) post end it 'return posts ordered by populality' do expect(user.posts_ordered_by_popularity).to eq [post_popular, post_not_popular] end end end
ྑ͍ྫ FactoryGirl.define do factory :user do sequence(:name) { |i| "username#{i}" } trait(:with_posts) do after(:create) do |user, evaluator| create_list(:post, 2, user: user) end end end end
# ѱ͍ྫ class Post < ApplicationRecord # όάؚ͕·Ε͍ͯΔ scope :last_month_published, -> { where(publish_at: (Time.zone.now - 31.days).all_month) } end RSpec.describe Post, type: :model do describe '.last_month_published' do let!(:april_1st) { create :post, publish_at: Time.zone.local(2017, 4, 1) } let!(:april_30th) { create :post, publish_at: Time.zone.local(2017, 4, 30) } before do create :post, publish_at: Time.zone.local(2017, 5, 1) create :post, publish_at: Time.zone.local(2017, 3, 31) end it 'return published posts in last month' do Timecop.travel(2017, 5, 6) do # ςετ௨Δ expect(Post.last_month_published).to contain_exactly(april_1st, april_30th) end end end end
# ྑ͍ྫ # ઈରͰͳ͍͕ෆ۩߹ʹؾͮ͘Մೳੑ͕૿͢ RSpec.describe Post, type: :model do describe '.last_month_published' do let!(:now) { Time.zone.now } let!(:last_beginning_of_month) { create :post, publish_at: 1.month.ago(now).beginning_of_month } let!(:last_end_of_month) { create :post, publish_at: 1.month.ago(now).end_of_month } before do create :post, publish_at: now create :post, publish_at: 2.months.ago(now) end it 'return published posts in last month' do expect(Post.last_month_published).to contain_exactly(last_beginning_of_month, last_end_of_month) end end end
# ѱ͍ྫ describe Post do let!(:post) { create :post } describe '#published?' do subject { post.published? } context 'when the post has already published' do it { is_expected.to eq true } end context 'when the post has not published' do before { post.update(publish_at: nil) } it { is_expected.to eq false } end context 'when the post is closed' do before { post.update(status: :close) } it { is_expected.to eq false } end context 'when the title includes "[WIP]"' do before { post.update(title: '[WIP]hello world') } it { is_expected.to eq false } end end end
# ѱ͍ྫ describe Post do let!(:post) { create :post, title: title, status: status, publish_at: publish_at } let(:title) { 'hello world' } let(:status) { :open } let(:publish_at) { Time.zone.now } describe '#published?' do subject { post.published? } context 'when the post has already published' do it { is_expected.to eq true } end context 'when the post has not published' do let(:publish_at) { nil } it { is_expected.to eq false } end context 'when the post is closed' do let(:status) { :close } it { is_expected.to eq false } end context 'when the title includes "[WIP]"' do let(:title) { '[WIP]hello world'} it { is_expected.to eq false } end end end
# ѱ͍ྫ # Ҿͱͯ͠͞Ε༵ͨʹରԠ͚ͨͩ͠ϙΠϯτΛ૿͢ϝιου # `Point#increase_by_day_of_the_week`Λςετ͍ͯ͠Δ RSpec.describe Point, type: :model do describe '#increase_by_day_of_the_week' do let(:point) { create :point, point: 0 } it_behaves_like 'point increasing by day of the week', 100 do let(:wday) { 0 } end it_behaves_like 'point increasing by day of the week', 50 do let(:wday) { 1 } end it_behaves_like 'point increasing by day of the week', 30 do let(:wday) { 2 } end # ... end end
ఆٛͪ͜Β RSpec.shared_examples 'point increasing by day of the week' do |expected_point| it "increase by #{expected_point}" do expect(point.point).to eq 0 point.increase_by_day_of_the_week(wday) expect(point.point).to eq expected_point end end
# ѱ͍ྫ(࠶ܝ) # - લఏ͕݅ଟ͍ # - ఆ͕ٛࢄ͍ͯ͠Δ RSpec.describe Point, type: :model do describe '#increase_by_day_of_the_week' do let(:point) { create :point, point: 0 } it_behaves_like 'point increasing by day of the week', 100 do let(:wday) { 0 } end it_behaves_like 'point increasing by day of the week', 50 do let(:wday) { 1 } end it_behaves_like 'point increasing by day of the week', 30 do let(:wday) { 2 } end # ... end end
# shared_examples Λͬͨ··ՄಡੑΛଟগ૿ͨ͠ྫ RSpec.describe Point, type: :model do describe '#increase_by_day_of_the_week' do let(:point) { create :point, point: 0 } context 'on sunday' do let(:wday) { 0 } it_behaves_like 'point increasing by day of the week', expected_point: 100 end context 'on monday' do let(:wday) { 1 } it_behaves_like 'point increasing by day of the week', expected_point: 50 end context 'on tuesday' do let(:wday) { 2 } it_behaves_like 'point increasing by day of the week', expected_point: 30 end # ... end end
# ϒϩοΫҾΛύϥϝʔλҾʹͨ͠ RSpec.shared_examples 'point increasing by day of the week' do |expected_point:| it "increase by #{expected_point}" do expect(point.point).to eq 0 point.increase_by_day_of_the_week(wday) expect(point.point).to eq expected_point end end
# shared_examples ΛࣙΊͨྫ RSpec.describe Point, type: :model do describe '#increase_by_day_of_the_week' do let(:point) { create :point, point: 0 } context 'on sunday' do let(:wday) { 0 } it "increase by 100" do expect(point.point).to eq 0 point.increase_by_day_of_the_week(wday) expect(point.point).to eq 100 end end context 'on monday' do let(:wday) { 1 } it "increase by 50" do expect(point.point).to eq 0 point.increase_by_day_of_the_week(wday) expect(point.point).to eq 50 end end # ུ end end
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