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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
argument :test, ::GraphQL::Types::Int, required: false
type [::GraphQL::Types::Int], null: true
def resolve(test: 100)
process(object)
[test, test]
end
def process(obj); end
end
end
let(:last_resolver) do
Class.new(described_class) do
type [::GraphQL::Types::Int], null: true
def resolve(**args)
[1, 2]
end
end
end
describe '.singular_type' do
subject { resolver.singular_type }
context 'for a connection of scalars' do
let(:resolver) do
Class.new(described_class) do
type ::GraphQL::Types::Int.connection_type, null: true
end
end
it { is_expected.to eq(::GraphQL::Types::Int) }
end
context 'for a connection of objects' do
let(:object) do
Class.new(::Types::BaseObject) do
graphql_name 'Foo'
end
end
let(:resolver) do
conn = object.connection_type
Class.new(described_class) do
type conn, null: true
end
end
it { is_expected.to eq(object) }
end
context 'for a list type' do
let(:resolver) do
Class.new(described_class) do
type [::GraphQL::Types::String], null: true
end
end
it { is_expected.to eq(::GraphQL::Types::String) }
end
context 'for a scalar type' do
let(:resolver) do
Class.new(described_class) do
type ::GraphQL::Types::Boolean, null: true
end
end
it { is_expected.to eq(::GraphQL::Types::Boolean) }
end
end
describe '.single' do
it 'returns a subclass from the resolver' do
expect(resolver.single.superclass).to eq(resolver)
end
it 'has the correct (singular) type' do
expect(resolver.single.type).to eq(::GraphQL::Types::Int)
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(1)
end
end
describe '.when_single' do
let(:resolver) do
Class.new(described_class) do
type [::GraphQL::Types::Int], null: true
when_single do
argument :foo, ::GraphQL::Types::Int, required: true
end
def resolve(foo: 1)
[foo * foo] # rubocop: disable Lint/BinaryOperatorWithIdenticalOperands
end
end
end
it 'does not apply the block to the resolver' do
expect(resolver.field_options).to include(
arguments: be_empty
)
result = resolve(resolver)
expect(result).to eq([1])
end
it 'applies the block to the single version of the resolver' do
expect(resolver.single.field_options).to include(
arguments: match('foo' => an_instance_of(::Types::BaseArgument))
)
result = resolve(resolver.single, args: { foo: 7 })
expect(result).to eq(49)
end
context 'multiple when_single blocks' do
let(:resolver) do
Class.new(described_class) do
type [::GraphQL::Types::Int], null: true
when_single do
argument :foo, ::GraphQL::Types::Int, required: true
end
when_single do
argument :bar, ::GraphQL::Types::Int, required: true
end
def resolve(foo: 1, bar: 2)
[foo * bar]
end
end
end
it 'applies both blocks to the single version of the resolver' do
expect(resolver.single.field_options).to include(
arguments: match('foo' => ::Types::BaseArgument, 'bar' => ::Types::BaseArgument)
)
result = resolve(resolver.single, args: { foo: 7, bar: 5 })
expect(result).to eq(35)
end
end
context 'inheritance' do
let(:subclass) do
Class.new(resolver) do
when_single do
argument :inc, ::GraphQL::Types::Int, required: true
end
def resolve(foo:, inc:)
super(foo: foo + inc)
end
end
end
it 'applies both blocks to the single version of the resolver' do
expect(resolver.single.field_options).to include(
arguments: match('foo' => ::Types::BaseArgument)
)
expect(subclass.single.field_options).to include(
arguments: match('foo' => ::Types::BaseArgument, 'inc' => ::Types::BaseArgument)
)
result = resolve(subclass.single, args: { foo: 7, inc: 1 })
expect(result).to eq(64)
end
end
end
context 'when the resolver returns early' do
let(:resolver) do
Class.new(described_class) do
type [::GraphQL::Types::String], null: true
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::Types::String.connection_type, resolver_class: described_class, null: false, max_page_size: 1)
expect(field.complexity.call({}, { sort: 'foo' }, 1)).to eq 3
expect(field.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::Types::String.connection_type, resolver_class: described_class, null: false, max_page_size: 100)
expect(field.complexity.call({}, { sort: 'foo' }, 1)).to eq 6
expect(field.complexity.call({}, { sort: 'foo', iid: 1 }, 1)).to eq 3
expect(field.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 '#offset_pagination' do
let(:instance) { resolver_instance(resolver) }
it 'is sugar for OffsetPaginatedRelation.new' do
expect(instance.offset_pagination(User.none)).to be_a(::Gitlab::Graphql::Pagination::OffsetPaginatedRelation)
end
end
end
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