From 0bcdfe2c4313535816f546072923aecaa75bde9c Mon Sep 17 00:00:00 2001
From: eldritch horrors <pennae@lix.systems>
Date: Tue, 24 Feb 2026 22:42:47 +0100
Subject: [PATCH] testing: migrate fmt.sh

Change-Id: Icc593b57a06c7fdf75762094982788f6351dcadc
---
 tests/functional/fmt.sh                       | 36 -------------
 tests/functional/meson.build                  |  1 -
 .../cli/assets}/fmt.simple.sh                 |  0
 tests/functional2/cli/test_fmt.py             | 53 +++++++++++++++++++
 4 files changed, 53 insertions(+), 37 deletions(-)
 delete mode 100644 tests/functional/fmt.sh
 rename tests/{functional => functional2/cli/assets}/fmt.simple.sh (100%)
 create mode 100644 tests/functional2/cli/test_fmt.py

diff --git a/tests/functional/fmt.sh b/tests/functional/fmt.sh
deleted file mode 100644
index 7d6add9b6..000000000
--- a/tests/functional/fmt.sh
+++ /dev/null
@@ -1,36 +0,0 @@
-source common.sh
-
-clearStore
-rm -rf $TEST_HOME/.cache $TEST_HOME/.config $TEST_HOME/.local
-
-cp ./simple.nix ./simple.builder.sh ./fmt.simple.sh ./config.nix $TEST_HOME
-
-cd $TEST_HOME
-
-nix fmt --help | grep "Format"
-
-cat << EOF > flake.nix
-{
-  outputs = _: {
-    formatter.$system =
-      with import ./config.nix;
-      mkDerivation {
-        name = "formatter";
-        buildCommand = ''
-          mkdir -p \$out/bin
-          echo "#! ${shell}" > \$out/bin/formatter
-          cat \${./fmt.simple.sh} >> \$out/bin/formatter
-          chmod +x \$out/bin/formatter
-        '';
-      };
-  };
-}
-EOF
-# No arguments check
-[[ "$(nix fmt)" = "Formatting(0):" ]]
-# Argument forwarding check
-nix fmt ./file ./folder | grep 'Formatting(2): ./file ./folder'
-nix flake check
-nix flake show | grep -P "package 'formatter'"
-
-clearStore
diff --git a/tests/functional/meson.build b/tests/functional/meson.build
index d8041f9d2..2efb533ee 100644
--- a/tests/functional/meson.build
+++ b/tests/functional/meson.build
@@ -98,7 +98,6 @@ functional_tests_scripts = [
   'pre-hook.sh',
   'post-hook.sh',
   'function-trace.sh',
-  'fmt.sh',
   'eval-store.sh',
   'derivation-json.sh',
   'import-derivation.sh',
diff --git a/tests/functional/fmt.simple.sh b/tests/functional2/cli/assets/fmt.simple.sh
similarity index 100%
rename from tests/functional/fmt.simple.sh
rename to tests/functional2/cli/assets/fmt.simple.sh
diff --git a/tests/functional2/cli/test_fmt.py b/tests/functional2/cli/test_fmt.py
new file mode 100644
index 000000000..39687df20
--- /dev/null
+++ b/tests/functional2/cli/test_fmt.py
@@ -0,0 +1,53 @@
+from testlib.fixtures.nix import Nix
+from testlib.fixtures.file_helper import CopyFile, File, with_files
+from testlib.utils import get_global_asset_pack
+from testlib.environ import environ
+
+import pytest
+
+system = environ.get("system")
+
+
+@with_files(
+    get_global_asset_pack("simple-drv")
+    | {
+        "fmt.simple.sh": CopyFile("assets/fmt.simple.sh"),
+        "flake.nix": File(f"""{{
+          outputs = _: {{
+            formatter.{system} =
+              with import ./config.nix;
+              mkDerivation {{
+                name = "formatter";
+                buildCommand = ''
+                  mkdir -p $out/bin
+                  echo "#! ${{shell}}" > $out/bin/formatter
+                  cat ${{./fmt.simple.sh}} >> $out/bin/formatter
+                  chmod +x $out/bin/formatter
+                '';
+              }};
+          }};
+        }}"""),
+    }
+)
+class TestFmt:
+    @pytest.fixture(autouse=True)
+    def init(self, nix: Nix):
+        nix.settings.add_xp_feature("nix-command", "flakes")
+
+    def test_help(self, nix: Nix):
+        assert "Format" in nix.nix(["fmt", "--help"]).run().ok().stdout_plain
+
+    def test_no_args(self, nix: Nix):
+        assert nix.nix(["fmt"]).run().ok().stdout_plain == "Formatting(0):"
+
+    def test_forwarding(self, nix: Nix):
+        assert (
+            nix.nix(["fmt", "./file", "./folder"]).run().ok().stdout_plain
+            == "Formatting(2): ./file ./folder"
+        )
+
+    def test_flake_check(self, nix: Nix):
+        nix.nix(["flake", "check"]).run().ok()
+
+    def test_flake_show(self, nix: Nix):
+        assert "package 'formatter'" in nix.nix(["flake", "show"]).run().ok().stdout_plain