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This patch replaces the parameters provided to a service through `params` by the contract object. That way, it allows better consistency when accessing input params. For example, if you have a service without a contract, to access a parameter, you need to use `params[:my_parameter]`. But with a contract, you do this through `contract.my_parameter`. Now, with this patch, you’ll be able to access it through `params.my_parameter` or `params[:my_parameter]`. Some methods have been added to the contract object to better mimic a Hash. That way, when accessing/using `params`, you don’t have to think too much about it: - `params.my_key` is also accessible through `params[:my_key]`. - `params.my_key = value` can also be done through `params[:my_key] = value`. - `#slice` and `#merge` are available. - `#to_hash` has been implemented, so the contract object will be automatically cast as a hash by Ruby depending on the context. For example, with an AR model, you can do this: `user.update(**params)`.
271 lines
7.1 KiB
Ruby
271 lines
7.1 KiB
Ruby
# frozen_string_literal: true
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RSpec.describe Service::StepsInspector do
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class DummyService
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include Service::Base
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options do
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attribute :my_option, :boolean, default: true
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attribute :my_other_option, :integer, default: 1
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end
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model :model
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policy :policy
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params do
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attribute :parameter
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validates :parameter, presence: true
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end
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transaction do
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step :in_transaction_step_1
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step :in_transaction_step_2
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end
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step :final_step
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end
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subject(:inspector) { described_class.new(result) }
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let(:parameter) { "present" }
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let(:result) { DummyService.call(params: { parameter: parameter }) }
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before do
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class DummyService
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%i[fetch_model policy in_transaction_step_1 in_transaction_step_2 final_step].each do |name|
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define_method(name) { true }
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end
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end
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end
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describe "#inspect" do
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subject(:output) { inspector.inspect.strip }
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context "when service runs without error" do
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it "outputs all the steps of the service" do
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expect(output).to eq <<~OUTPUT.chomp
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[1/8] [options] 'default' ✅
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[2/8] [model] 'model' ✅
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[3/8] [policy] 'policy' ✅
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[4/8] [params] 'default' ✅
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[5/8] [transaction]
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[6/8] [step] 'in_transaction_step_1' ✅
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[7/8] [step] 'in_transaction_step_2' ✅
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[8/8] [step] 'final_step' ✅
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OUTPUT
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end
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end
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context "when the model step is failing" do
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before do
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class DummyService
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def fetch_model
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false
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end
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end
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end
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it "shows the failing step" do
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expect(output).to eq <<~OUTPUT.chomp
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[1/8] [options] 'default' ✅
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[2/8] [model] 'model' ❌
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[3/8] [policy] 'policy'
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[4/8] [params] 'default'
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[5/8] [transaction]
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[6/8] [step] 'in_transaction_step_1'
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[7/8] [step] 'in_transaction_step_2'
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[8/8] [step] 'final_step'
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OUTPUT
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end
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end
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context "when the policy step is failing" do
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before do
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class DummyService
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def policy
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false
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end
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end
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end
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it "shows the failing step" do
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expect(output).to eq <<~OUTPUT.chomp
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[1/8] [options] 'default' ✅
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[2/8] [model] 'model' ✅
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[3/8] [policy] 'policy' ❌
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[4/8] [params] 'default'
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[5/8] [transaction]
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[6/8] [step] 'in_transaction_step_1'
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[7/8] [step] 'in_transaction_step_2'
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[8/8] [step] 'final_step'
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OUTPUT
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end
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end
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context "when the params step is failing" do
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let(:parameter) { nil }
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it "shows the failing step" do
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expect(output).to eq <<~OUTPUT.chomp
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[1/8] [options] 'default' ✅
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[2/8] [model] 'model' ✅
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[3/8] [policy] 'policy' ✅
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[4/8] [params] 'default' ❌
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[5/8] [transaction]
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[6/8] [step] 'in_transaction_step_1'
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[7/8] [step] 'in_transaction_step_2'
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[8/8] [step] 'final_step'
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OUTPUT
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end
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end
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context "when a common step is failing" do
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before do
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class DummyService
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def in_transaction_step_2
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fail!("step error")
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end
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end
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end
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it "shows the failing step" do
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expect(output).to eq <<~OUTPUT.chomp
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[1/8] [options] 'default' ✅
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[2/8] [model] 'model' ✅
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[3/8] [policy] 'policy' ✅
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[4/8] [params] 'default' ✅
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[5/8] [transaction]
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[6/8] [step] 'in_transaction_step_1' ✅
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[7/8] [step] 'in_transaction_step_2' ❌
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[8/8] [step] 'final_step'
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OUTPUT
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end
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end
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context "when running in specs" do
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context "when a successful step is flagged as being an unexpected result" do
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before { result["result.policy.policy"]["spec.unexpected_result"] = true }
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it "adapts its output accordingly" do
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expect(output).to eq <<~OUTPUT.chomp
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[1/8] [options] 'default' ✅
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[2/8] [model] 'model' ✅
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[3/8] [policy] 'policy' ✅ ⚠️ <= expected to return false but got true instead
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[4/8] [params] 'default' ✅
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[5/8] [transaction]
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[6/8] [step] 'in_transaction_step_1' ✅
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[7/8] [step] 'in_transaction_step_2' ✅
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[8/8] [step] 'final_step' ✅
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OUTPUT
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end
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end
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context "when a failing step is flagged as being an unexpected result" do
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before do
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class DummyService
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def policy
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false
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end
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end
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result["result.policy.policy"]["spec.unexpected_result"] = true
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end
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it "adapts its output accordingly" do
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expect(output).to eq <<~OUTPUT.chomp
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[1/8] [options] 'default' ✅
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[2/8] [model] 'model' ✅
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[3/8] [policy] 'policy' ❌ ⚠️ <= expected to return true but got false instead
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[4/8] [params] 'default'
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[5/8] [transaction]
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[6/8] [step] 'in_transaction_step_1'
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[7/8] [step] 'in_transaction_step_2'
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[8/8] [step] 'final_step'
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OUTPUT
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end
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end
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end
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end
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describe "#error" do
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subject(:error) { inspector.error }
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context "when there are no errors" do
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it "returns nothing" do
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expect(error).to be_blank
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end
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end
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context "when the model step is failing" do
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context "when the model is missing" do
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before do
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class DummyService
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def fetch_model
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false
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end
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end
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end
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it "returns an error related to the model" do
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expect(error).to match(/Model not found/)
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end
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end
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context "when the model has errors" do
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before do
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class DummyService
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def fetch_model
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OpenStruct.new(invalid?: true, errors: ActiveModel::Errors.new(nil))
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end
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end
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end
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it "returns an error related to the model" do
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expect(error).to match(/ActiveModel::Errors \[\]/)
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end
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end
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end
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context "when the params step is failing" do
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let(:parameter) { nil }
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it "returns an error related to the contract" do
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expect(error).to match(/ActiveModel::Error attribute=parameter, type=blank, options={}/)
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end
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it "returns the provided paramaters" do
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expect(error).to match(/{"parameter"=>nil}/)
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end
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end
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context "when the policy step is failing" do
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before do
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class DummyService
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def policy
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false
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end
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end
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end
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context "when there is no reason provided" do
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it "returns nothing" do
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expect(error).to be_blank
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end
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end
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context "when a reason is provided" do
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before { result["result.policy.policy"][:reason] = "failed" }
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it "returns the reason" do
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expect(error).to eq "failed"
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end
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end
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end
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context "when a common step is failing" do
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before { result["result.step.final_step"].fail(error: "my error") }
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it "returns an error related to the step" do
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expect(error).to eq("my error")
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end
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end
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end
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end
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