fix error when API was called with unregistered module name (#148)

CHANGELOG.md

@@ -29,6 +29,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - decoding a single propery for `EdgeDB.Object` that equals to an empty set.
 - not catching an `EdgeDB.Error` exception during parameters encoding,
  which caused throwing an exception for non-`!` functions.
+- silent error for calling `EdgeDB` API with wrong module names.
 
 ### Removed
 

lib/edgedb.ex

@@ -895,9 +895,11 @@ defmodule EdgeDB do
  end
 
  defp to_client(client_name) when is_atom(client_name) do
- client_name
- |> Process.whereis()
- |> to_client()
+ if pid = Process.whereis(client_name) do
+ to_client(pid)
+ else
+ raise EdgeDB.InterfaceError.new("could not find process associated with #{client_name}")
+ end
  end
 
  # ensure that client is really registered

lib/edgedb/borrower.ex

@@ -36,6 +36,11 @@ defmodule EdgeDB.Borrower do
  end
 
  @spec ensure_unborrowed!(EdgeDB.client()) :: :ok | no_return()
+
+ def ensure_unborrowed!(client) when is_pid(client) do
+ :ok
+ end
+
  def ensure_unborrowed!(client) do
  case GenServer.call(__MODULE__, {:check_borrowed, client}) do
  :unborrowed ->

test/edgedb/api_test.exs

@@ -563,4 +563,13 @@ defmodule Tests.EdgeDB.APITest do
  assert object[:user_type][:name] == "default::User"
  end
  end
+
+ test "EdgeDB API raises an error for wrong module name as a client" do
+ e =
+ assert_raise EdgeDB.Error, fn ->
+ EdgeDB.query!(EdgeDBWrongName, "select 'Hello world'")
+ end
+
+ assert %EdgeDB.Error{type: EdgeDB.InterfaceError} = e
+ end
 end