From 1b6c96bbcb23ecee5078b1fd56a5b0e83b40b158 Mon Sep 17 00:00:00 2001
From: John Ericson <John.Ericson@Obsidian.Systems>
Date: Mon, 16 Jan 2023 19:10:18 -0500
Subject: [PATCH] Write test, will fail until rest of PR

---
 tests/experimental-features.sh | 23 +++++++++++++++++++++++
 tests/local.mk                 |  1 +
 2 files changed, 24 insertions(+)
 create mode 100644 tests/experimental-features.sh

diff --git a/tests/experimental-features.sh b/tests/experimental-features.sh
new file mode 100644
index 000000000..3be77d5cc
--- /dev/null
+++ b/tests/experimental-features.sh
@@ -0,0 +1,23 @@
+source common.sh
+
+# Without flakes, flake options should not show up
+# With flakes, flake options should show up
+
+function both_ways {
+    nix --experimental-features 'nix-command' "$@" | grepQuietInverse flake
+    nix --experimental-features 'nix-command flakes' "$@" | grepQuiet flake
+
+    # Also, the order should not matter
+    nix "$@" --experimental-features 'nix-command' | grepQuietInverse flake
+    nix "$@" --experimental-features 'nix-command flakes' | grepQuiet flake
+}
+
+# Simple case, the configuration effects the running command
+both_ways show-config
+
+# Complicated case, earlier args effect later args
+
+both_ways store gc --help
+
+expect 1 nix --experimental-features 'nix-command' show-config --flake-registry 'https://no'
+nix --experimental-features 'nix-command flakes' show-config --flake-registry 'https://no'
diff --git a/tests/local.mk b/tests/local.mk
index 328f27e90..1cc33093f 100644
--- a/tests/local.mk
+++ b/tests/local.mk
@@ -18,6 +18,7 @@ nix_tests = \
   gc.sh \
   remote-store.sh \
   lang.sh \
+  experimental-features.sh \
   fetchMercurial.sh \
   gc-auto.sh \
   user-envs.sh \