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# frozen_string_literal: true
require "spec_helper"
describe GraphQL::Types::String do
let(:string_type) { GraphQL::Types::String }
it "is a default scalar" do
assert_equal(true, string_type.default_scalar?)
end
describe "coerce_result" do
let(:utf_8_str) { "foobar" }
let(:ascii_str) { "foobar".encode(Encoding::ASCII_8BIT) }
let(:binary_str) { "\0\0\0foo\255\255\255".dup.force_encoding("BINARY") }
describe "encoding" do
subject { string_type.coerce_isolated_result(string) }
describe "when result is encoded as UTF-8" do
let(:string) { utf_8_str }
it "returns the string" do
assert_equal subject, string
end
end
describe "when the result is not UTF-8 but can be transcoded" do
let(:string) { ascii_str }
it "returns the string transcoded to UTF-8" do
assert_equal subject, string.encode(Encoding::UTF_8)
end
end
describe "when the result is not UTF-8 and cannot be transcoded" do
let(:string) { binary_str }
it "raises GraphQL::StringEncodingError" do
err = assert_raises(GraphQL::StringEncodingError) { subject }
assert_equal "String \"\\x00\\x00\\x00foo\\xAD\\xAD\\xAD\" was encoded as ASCII-8BIT. GraphQL requires an encoding compatible with UTF-8.", err.message
assert_equal string, err.string
end
end
describe "In queries" do
let(:schema) {
query_type = Class.new(GraphQL::Schema::Object) do
graphql_name "Query"
field :bad_string, String
def bad_string
"\0\0\0foo\255\255\255".dup.force_encoding("BINARY")
end
end
Class.new(GraphQL::Schema) do
query(query_type)
end
}
it "includes location in the error message" do
err = assert_raises GraphQL::StringEncodingError do
schema.execute("{ badString }")
end
expected_err = "String \"\\x00\\x00\\x00foo\\xAD\\xAD\\xAD\" was encoded as ASCII-8BIT @ badString (Query.badString). GraphQL requires an encoding compatible with UTF-8."
assert_equal expected_err, err.message
end
end
end
describe "when the schema defines a custom handler" do
let(:schema) {
Class.new(GraphQL::Schema) do
def self.type_error(err, ctx)
ctx.errors << err
"🌾"
end
end
}
let(:context) {
OpenStruct.new(schema: schema, errors: [])
}
it "calls the handler" do
assert_equal "🌾", string_type.coerce_result(binary_str, context)
err = context.errors.last
assert_instance_of GraphQL::StringEncodingError, err
end
end
end
describe "coerce_input" do
it "accepts strings" do
assert_equal "str", string_type.coerce_isolated_input("str")
end
it "doesn't accept other types" do
assert_nil string_type.coerce_isolated_input(100)
assert_nil string_type.coerce_isolated_input(true)
assert_nil string_type.coerce_isolated_input(0.999)
end
end
end
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