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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Resolvers::BaseResolver do
include GraphqlHelpers
let(:resolver) do
Class.new(described_class) do
def resolve(**args)
process(object)
[args, args]
end
def process(obj); end
end
end
let(:last_resolver) do
Class.new(described_class) do
def resolve(**args)
[1, 2]
end
end
end
describe '.single' do
it 'returns a subclass from the resolver' do
expect(resolver.single.superclass).to eq(resolver)
end
it 'returns the same subclass every time' do
expect(resolver.single.object_id).to eq(resolver.single.object_id)
end
it 'returns a resolver that gives the first result from the original resolver' do
result = resolve(resolver.single, args: { test: 1 })
expect(result).to eq(test: 1)
end
end
context 'when the resolver returns early' do
let(:resolver) do
Class.new(described_class) do
def ready?(**args)
[false, %w(early return)]
end
def resolve(**args)
raise 'Should not get here'
end
end
end
it 'runs correctly in our test framework' do
expect(resolve(resolver)).to contain_exactly('early', 'return')
end
it 'single selects the first early return value' do
expect(resolve(resolver.single)).to eq('early')
end
it 'last selects the last early return value' do
expect(resolve(resolver.last)).to eq('return')
end
end
describe '.last' do
it 'returns a subclass from the resolver' do
expect(last_resolver.last.ancestors).to include(last_resolver)
end
it 'returns the same subclass every time' do
expect(last_resolver.last.object_id).to eq(last_resolver.last.object_id)
end
it 'returns a resolver that gives the last result from the original resolver' do
result = resolve(last_resolver.last)
expect(result).to eq(2)
end
end
context 'when field is a connection' do
it 'increases complexity based on arguments' do
field = Types::BaseField.new(name: 'test', type: GraphQL::STRING_TYPE.connection_type, resolver_class: described_class, null: false, max_page_size: 1)
expect(field.to_graphql.complexity.call({}, { sort: 'foo' }, 1)).to eq 3
expect(field.to_graphql.complexity.call({}, { search: 'foo' }, 1)).to eq 7
end
it 'does not increase complexity when filtering by iids' do
field = Types::BaseField.new(name: 'test', type: GraphQL::STRING_TYPE.connection_type, resolver_class: described_class, null: false, max_page_size: 100)
expect(field.to_graphql.complexity.call({}, { sort: 'foo' }, 1)).to eq 6
expect(field.to_graphql.complexity.call({}, { sort: 'foo', iid: 1 }, 1)).to eq 3
expect(field.to_graphql.complexity.call({}, { sort: 'foo', iids: [1, 2, 3] }, 1)).to eq 3
end
end
describe '#object' do
let_it_be(:user) { create(:user) }
it 'returns object' do
expect_next_instance_of(resolver) do |r|
expect(r).to receive(:process).with(user)
end
resolve(resolver, obj: user)
end
context 'when object is a presenter' do
it 'returns presented object' do
expect_next_instance_of(resolver) do |r|
expect(r).to receive(:process).with(user)
end
resolve(resolver, obj: UserPresenter.new(user))
end
end
end
describe '#synchronized_object' do
let(:object) { double(foo: :the_foo) }
let(:resolver) do
Class.new(described_class) do
def resolve(**args)
[synchronized_object.foo]
end
end
end
it 'handles raw objects' do
expect(resolve(resolver, obj: object)).to contain_exactly(:the_foo)
end
it 'handles lazy objects' do
delayed = BatchLoader::GraphQL.for(1).batch do |_, loader|
loader.call(1, object)
end
expect(resolve(resolver, obj: delayed)).to contain_exactly(:the_foo)
end
end
end
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