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050828d1de
This is extracted from #22390. This patch adds a new `optional` option to the `model` step. This means if an optional model returns something blank (`nil` or an empty collection) then the service won’t fail and will execute the next step. However if a model is properly returned, the step will try to check if it is valid or not (if it responds to `#invalid?`). If the model isn’t valid, then the step will fail (so no change here).
425 lines
9.5 KiB
Ruby
425 lines
9.5 KiB
Ruby
# frozen_string_literal: true
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RSpec.describe ServiceRunner do
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class SuccessService
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include Service::Base
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end
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class FailureService
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include Service::Base
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step :fail_step
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def fail_step
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fail!("error")
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end
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end
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class FailedPolicyService
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include Service::Base
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policy :test
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def test
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false
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end
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end
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class SuccessPolicyService
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include Service::Base
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policy :test
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def test
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true
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end
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end
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class FailedContractService
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include Service::Base
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class Contract
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attribute :test
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validates :test, presence: true
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end
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contract
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end
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class SuccessContractService
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include Service::Base
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contract
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end
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class FailureWithModelService
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include Service::Base
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model :fake_model, :fetch_fake_model
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private
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def fetch_fake_model
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nil
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end
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end
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class FailureWithOptionalModelService
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include Service::Base
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model :fake_model, optional: true
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private
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def fetch_fake_model
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nil
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end
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end
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class FailureWithModelErrorsService
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include Service::Base
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model :fake_model, :fetch_fake_model
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private
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def fetch_fake_model
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OpenStruct.new(invalid?: true)
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end
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end
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class SuccessWithModelService
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include Service::Base
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model :fake_model, :fetch_fake_model
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private
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def fetch_fake_model
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:model_found
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end
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end
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class SuccessWithModelErrorsService
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include Service::Base
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model :fake_model, :fetch_fake_model
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private
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def fetch_fake_model
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OpenStruct.new
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end
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end
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class FailureWithCollectionModelService
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include Service::Base
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model :fake_model, :fetch_fake_model
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private
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def fetch_fake_model
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[]
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end
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end
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class SuccessWithCollectionModelService
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include Service::Base
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model :fake_model, :fetch_fake_model
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private
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def fetch_fake_model
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[:models_found]
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end
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end
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describe ".call(service, &block)" do
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subject(:runner) { described_class.call(service, object, &actions_block) }
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let(:result) { object.result }
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let(:actions_block) { object.instance_eval(actions) }
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let(:service) { SuccessService }
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let(:actions) { "proc {}" }
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let(:object) do
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Class
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.new(Chat::ApiController) do
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def request
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OpenStruct.new
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end
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def params
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ActionController::Parameters.new
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end
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def guardian
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end
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end
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.new
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end
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it "runs the provided service in the context of a controller" do
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runner
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expect(result).to be_a Service::Base::Context
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expect(result).to be_a_success
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end
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context "when using the on_success action" do
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let(:actions) { <<-BLOCK }
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proc do
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on_success { :success }
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end
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BLOCK
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context "when the service succeeds" do
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it "runs the provided block" do
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expect(runner).to eq :success
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end
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end
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context "when the service does not succeed" do
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let(:service) { FailureService }
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it "does not run the provided block" do
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expect(runner).not_to eq :success
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end
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end
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end
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context "when using the on_failure action" do
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let(:actions) { <<-BLOCK }
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proc do
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on_failure { :fail }
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end
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BLOCK
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context "when the service fails" do
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let(:service) { FailureService }
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it "runs the provided block" do
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expect(runner).to eq :fail
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end
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end
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context "when the service does not fail" do
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let(:service) { SuccessService }
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it "does not run the provided block" do
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expect(runner).not_to eq :fail
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end
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end
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end
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context "when using the on_failed_policy action" do
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let(:actions) { <<-BLOCK }
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proc do
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on_failed_policy(:test) { :policy_failure }
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end
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BLOCK
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context "when the service policy fails" do
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let(:service) { FailedPolicyService }
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context "when not using the block argument" do
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it "runs the provided block" do
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expect(runner).to eq :policy_failure
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end
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end
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context "when using the block argument" do
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let(:actions) { <<-BLOCK }
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proc do
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on_failed_policy(:test) { |policy| policy == result["result.policy.test"] }
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end
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BLOCK
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it "runs the provided block" do
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expect(runner).to be true
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end
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end
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end
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context "when the service policy does not fail" do
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let(:service) { SuccessPolicyService }
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it "does not run the provided block" do
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expect(runner).not_to eq :policy_failure
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end
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end
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end
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context "when using the on_failed_contract action" do
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let(:actions) { <<-BLOCK }
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proc do
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on_failed_contract { :contract_failure }
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end
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BLOCK
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context "when the service contract fails" do
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let(:service) { FailedContractService }
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context "when not using the block argument" do
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it "runs the provided block" do
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expect(runner).to eq :contract_failure
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end
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end
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context "when using the block argument" do
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let(:actions) { <<-BLOCK }
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proc do
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on_failed_contract { |contract| contract == result["result.contract.default"] }
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end
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BLOCK
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it "runs the provided block" do
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expect(runner).to be true
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end
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end
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end
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context "when the service contract does not fail" do
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let(:service) { SuccessContractService }
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it "does not run the provided block" do
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expect(runner).not_to eq :contract_failure
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end
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end
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end
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context "when using the on_model_not_found action" do
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let(:actions) { <<-BLOCK }
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proc do
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on_model_not_found(:fake_model) { :no_model }
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end
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BLOCK
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context "when fetching a single model" do
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context "when the service uses an optional model" do
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let(:service) { FailureWithOptionalModelService }
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it "does not run the provided block" do
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expect(runner).not_to eq :no_model
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end
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end
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context "when the service fails without a model" do
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let(:service) { FailureWithModelService }
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context "when not using the block argument" do
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it "runs the provided block" do
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expect(runner).to eq :no_model
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end
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end
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context "when using the block argument" do
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let(:actions) { <<-BLOCK }
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proc do
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on_model_not_found(:fake_model) { |model| model == result["result.model.fake_model"] }
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end
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BLOCK
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it "runs the provided block" do
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expect(runner).to be true
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end
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end
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end
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context "when the service does not fail with a model" do
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let(:service) { SuccessWithModelService }
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it "does not run the provided block" do
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expect(runner).not_to eq :no_model
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end
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end
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end
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context "when fetching a collection" do
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context "when the service fails without a model" do
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let(:service) { FailureWithCollectionModelService }
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it "runs the provided block" do
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expect(runner).to eq :no_model
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end
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end
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context "when the service does not fail with a model" do
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let(:service) { SuccessWithCollectionModelService }
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it "does not run the provided block" do
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expect(runner).not_to eq :no_model
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end
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end
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end
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end
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context "when using the on_model_errors action" do
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let(:actions) { <<-BLOCK }
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proc do
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on_model_errors(:fake_model) { :model_errors }
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end
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BLOCK
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context "when the service fails with a model containing errors" do
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let(:service) { FailureWithModelErrorsService }
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context "when not using the block argument" do
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it "runs the provided block" do
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expect(runner).to eq :model_errors
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end
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end
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context "when using the block argument" do
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let(:actions) { <<-BLOCK }
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proc do
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on_model_errors(:fake_model) { |model| model == OpenStruct.new(invalid?: true) }
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end
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BLOCK
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it "runs the provided block" do
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expect(runner).to be true
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end
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end
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end
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context "when the service does not fail with a model containing errors" do
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let(:service) { SuccessWithModelErrorsService }
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it "does not run the provided block" do
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expect(runner).not_to eq :model_errors
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end
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end
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end
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context "when using several actions together" do
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let(:service) { FailureService }
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let(:actions) { <<-BLOCK }
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proc do
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on_success { :success }
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on_failure { :failure }
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on_failed_policy { :policy_failure }
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end
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BLOCK
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it "runs the first matching action" do
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expect(runner).to eq :failure
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end
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end
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context "when running in the context of a job" do
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let(:object) { Class.new(ServiceJob).new }
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let(:actions) { <<-BLOCK }
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proc do
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on_success { :success }
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on_failure { :failure }
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end
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BLOCK
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it "runs properly" do
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expect(runner).to eq :success
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end
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end
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end
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end
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