Module: GraphQL::Testing::Helpers

Included in:
SchemaHelpers
Defined in:
lib/graphql/testing/helpers.rb

Defined Under Namespace

Modules: SchemaHelpers Classes: Error, FieldNotDefinedError, FieldNotVisibleError, ResolutionAssertionContext, TypeNotDefinedError, TypeNotVisibleError

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.for(schema_class) ⇒ Module

Returns A helpers module which always uses the given schema.

Parameters:

Returns:

  • (Module) —

    A helpers module which always uses the given schema



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# File 'lib/graphql/testing/helpers.rb', line 7

def self.for(schema_class)
  SchemaHelpers.for(schema_class)
end

Instance Method Details

#run_graphql_field(schema, field_path, object, arguments: {}, context: {}, ast_node: nil, lookahead: nil) ⇒ Object 



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# File 'lib/graphql/testing/helpers.rb', line 42

def run_graphql_field(schema, field_path, object, arguments: {}, context: {}, ast_node: nil, lookahead: nil)
  type_name, *field_names = field_path.split(".")
  dummy_query = GraphQL::Query.new(schema, "{ __typename }", context: context)
  query_context = dummy_query.context
  object_type = dummy_query.types.type(type_name) # rubocop:disable Development/ContextIsPassedCop
  if object_type
    graphql_result = object
    field_names.each do |field_name|
      inner_object = graphql_result
      graphql_result = object_type.wrap(inner_object, query_context)
      if graphql_result.nil?
        return nil
      end
      visible_field = dummy_query.types.field(object_type, field_name) # rubocop:disable Development/ContextIsPassedCop
      if visible_field
        dummy_query.context.dataloader.run_isolated {
          field_args = visible_field.coerce_arguments(graphql_result, arguments, query_context)
          field_args = schema.sync_lazy(field_args)
          if visible_field.extras.any?
            extra_args = {}
            visible_field.extras.each do |extra|
              extra_args[extra] = case extra
              when :ast_node
                ast_node ||= GraphQL::Language::Nodes::Field.new(name: visible_field.graphql_name)
              when :lookahead
                lookahead ||= begin
                  ast_node ||= GraphQL::Language::Nodes::Field.new(name: visible_field.graphql_name)
                  Execution::Lookahead.new(
                    query: dummy_query,
                    ast_nodes: [ast_node],
                    field: visible_field,
                  )
                end
              else
                raise ArgumentError, "This extra isn't supported in `run_graphql_field` yet: `#{extra.inspect}`. Open an issue on GitHub to request it: https://github.com/rmosolgo/graphql-ruby/issues/new"
              end
            end

            field_args = field_args.merge_extras(extra_args)
          end
          graphql_result = visible_field.resolve(graphql_result, field_args.keyword_arguments, query_context)
          graphql_result = schema.sync_lazy(graphql_result)
        }
        object_type = visible_field.type.unwrap
      elsif object_type.all_field_definitions.any? { |f| f.graphql_name == field_name }
        raise FieldNotVisibleError.new(field_name: field_name, type_name: type_name)
      else
        raise FieldNotDefinedError.new(type_name: type_name, field_name: field_name)
      end
    end
    graphql_result
  elsif schema.has_defined_type?(type_name)
    raise TypeNotVisibleError.new(type_name: type_name)
  else
    raise TypeNotDefinedError.new(type_name: type_name)
  end
end

#with_resolution_context(schema, type:, object:, context: {}) {|resolution_context| ... } ⇒ Object

Yields:

  • (resolution_context) 


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# File 'lib/graphql/testing/helpers.rb', line 100

def with_resolution_context(schema, type:, object:, context:{})
  resolution_context = ResolutionAssertionContext.new(
    self,
    schema: schema,
    type_name: type,
    object: object,
    context: context
  )
  yield(resolution_context)
end