Strings containing only whitespace are being trimmed to an empty string

[thenick775]

If submitting a bug, please provide the following:

Environment

• Elixir version (elixir -v):

  
  Erlang/OTP 25 [erts-13.2.2.2] [source] [64-bit] [smp:10:10] [ds:10:10:10] [async-threads:1] [jit]

Elixir 1.14.5 (compiled with Erlang/OTP 25)

* Absinthe version (mix deps | grep absinthe):

• absinthe 1.7.6 (Hex package) (mix) locked at 1.7.6 (absinthe) e7626951
• absinthe_plug 1.5.8 (Hex package) (mix) locked at 1.5.8 (absinthe_plug) bbb04176
• absinthe_relay 1.5.2 (Hex package) (mix) locked at 1.5.2 (absinthe_relay) 0587ee91
• opentelemetry_absinthe 2.0.1 (Hex package) (mix) locked at 2.0.1 (opentelemetry_absinthe) 01e44cc3

• Client Framework and version (Relay, Apollo, etc): N/A

Expected behavior

Returning any string scalar field with only white space trimms the string to an empty string.

Ex. returning any of the following from a resolver: " " " " "\s"

Should return " " when fetching the query.

This is in alignment with the graphql string scalar spec, such that whitespace is significant: https://spec.graphql.org/October2021/#sec-String-Value

Actual behavior

Strings with only whitespace return as ""

Relevant Schema/Middleware Code

Note: I can try to provide an example, but take any sample phoenix app, add absinthe, and return a string from the resolver of the form shown above

[benwilson512]

Hi @thenick775 can you please show a complete reproducible example? This example seems to indicate otherwise:

defmodule Bug do
  use Absinthe.Schema

  query do
    field :hello, :string do
      resolve fn _, _, _ ->
        {:ok, " "}
      end
    end
  end

end

Absinthe.run("{ hello }", Bug)
#=> {:ok, %{data: %{"hello" => " "}}}

[thenick775]

Thank you, tracked this back down to ecto with empty_values through schemata, the last stop before we send to Absinthe.

My apologies for the confusion, and thank you for the example!

[benwilson512]

Glad I could help!