Testing Third Party APIs

Dives into various strategies for Testing Third Party APIs.

Transcript

1. T st ng hi d ar y PI 1
2. W y ho ld es s vo d PI al s? 4 D n t 4 F t 4 A h a r -l 4 P c g t a s p i e m 2
3. S ra eg es or oc in A I al s 3
4. S ub et od o A ap er 4
5. S ub in t e da te RSpec.describe ShoppingCart do it "calculates tax" do item = create(:item) shopping_cart = ShoppingCart.new(item) allow(QuoteService).to receive(:fetch).and_return(100) expect(shopping_cart.tax).to eq 10 end end # This approach is useful when unit-testing objects that # depend on data from other services. 5
6. S ub TT R qu st 6
7. S ub in H TP eq es s RSpec.describe ShoppingCart do it "calculates tax" do item = create(:item) shopping_cart = ShoppingCart.new(item) stub_request("http://quote-service.com/prices").and_return( { pricesRequest: { regularPrice: 100 } }.to_json ) expect(shopping_cart.tax).to eq 10 end end 7
8. U e F ke da te 8
9. U in a ak A ap er RSpec.feature "signing in" do scenario "with two factors" do create(:user, password: "password", email: "user@example.com") visit root_path click_on "Sign In" fill_in :email, with: "user@example.com" fill_in :password, with: "password" click_on "Submit" last_message = FakeSMS.messages.last fill_in :code, with: last_message.body click_on "Submit" expect(page).to have_content("Sign out") end end 9
10. R al eq es s o F ke er ic 1
11. # spec/support/fake_trello.rb class FakeTrello < Sinatra::Base get "/1/members/:id" do content_type :json JSON.generate(THOUGHTBOT_MEMBER.merge(id: params[:id])) end end # rails_helper.rb RSpec.configure do |config| config.before(:each) do stub_request(:any, /api.trello.com/).to_rack(FakeTrello) end end 1
12. F at re eq es W I v h h e o h e r A r C , I n e h n , d , n v o h x u g e . 1
13. O tl ne 4 S s G (i a n c ) 4 S T R s 4 S m A 4 R R a k A 1
14. H lp ul in s N r M E M A 1
15. R so rc s C F o D e: - h ://t b .c /b /c -f -f -d e T I t t 3 -p I (v ): - h ://t b .c /u /v /t -i t - w -3 -p -a T T P I t : - h ://t b .c /b /t -t -p -i t 1