fix io.debug to behave the same on Erlang and JavaScript (#308)

1 files changed, 11 insertions, 0 deletions

diff --git a/test/gleam/io_test.gleam b/test/gleam/io_test.gleam
new file mode 100644
index 0000000..6408127
--- /dev/null
+++ b/test/gleam/io_test.gleam
@@ -0,0 +1,11 @@
+if erlang {
+  import gleam/io
+  import gleam/should
+
+  pub fn debug_test() {
+    "io.debug-test"
+    // prints to stdout, but EUnit will suppress that:
+    |> io.debug()
+    |> should.equal("io.debug-test")
+  }
+}