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# frozen_string_literal: true
require "spec_helper"
describe GraphQL::Query::Context::ScopedContext do
class ScopedContextSchema < GraphQL::Schema
class Promise
def initialize(parent = nil, &block)
@parent = parent
@block = block
@value = nil
@children = []
end
def value
@value ||= begin
if @parent
@parent.value
else
v = @block.call
@children.each { |ch| ch.resolve_with(v) }
v
end
end
end
def resolve_with(v)
@value = @block.call(v)
end
def then(&block)
prm = Promise.new(self, &block)
@children << prm
prm
end
end
class Thing < GraphQL::Schema::Object
field :name, String
def name
context[:thing_name]
end
field :name_2, String
def name_2
context[:thing_name_2]
end
end
class ThingEdgeType < GraphQL::Schema::Object
field :node, Thing
def node
scoped_ctx = context.scoped
# Create a tree of promises, where many depend on one parent:
prm = context[:main_promise] ||= Promise.new { :noop }
prm.then {
scoped_ctx.set!(:thing_name, object)
scoped_ctx.merge!({ thing_name_2: object.to_s.upcase })
:thing
}
end
end
class ThingConnectionType < GraphQL::Schema::Object
field :edges, [ThingEdgeType]
def edges
object
end
end
class Query < GraphQL::Schema::Object
field :things, ThingConnectionType, connection: false
def things
[:one, :two, :three]
end
end
query(Query)
lazy_resolve(Promise, :value)
end
it "works with promise tree resolution and .scoped" do
query_str = "{ things { edges { node { name name2 } } } }"
res = ScopedContextSchema.execute(query_str)
assert_equal "one", res["data"]["things"]["edges"][0]["node"]["name"]
assert_equal "ONE", res["data"]["things"]["edges"][0]["node"]["name2"]
assert_equal "two", res["data"]["things"]["edges"][1]["node"]["name"]
assert_equal "TWO", res["data"]["things"]["edges"][1]["node"]["name2"]
assert_equal "three", res["data"]["things"]["edges"][2]["node"]["name"]
assert_equal "THREE", res["data"]["things"]["edges"][2]["node"]["name2"]
end
end
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