testing: migrate flakes/flake-metadata.sh

Change-Id: I8370a279bbfa224f27cdba0cf9e79ade6d58644f

tests/functional/flakes/flake-metadata.sh

@@ -1,36 +0,0 @@
-source ./common.sh
-
-flakeDir=$TEST_ROOT/flake
-mkdir -p "$flakeDir"
-
-cat > "$flakeDir/flake.nix" <<-'EOF'
-{
-  inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable-small";
-    flake-utils.url = "github:numtide/flake-utils";
-    flake-compat = {
-      url = "github:edolstra/flake-compat";
-      flake = false;
-    };
-    lanzaboote = {
-      url = "github:nix-community/lanzaboote";
-      inputs.nixpkgs.follows = "nixpkgs";
-      inputs.flake-utils.follows = "flake-utils";
-      inputs.flake-compat.follows = "flake-compat";
-    };
-  };
-
-  outputs = { ... }: {};
-}
-EOF
-
-cp flake-metadata/flake.lock "$flakeDir"
-touch -d @1000 "$flakeDir/flake.nix" "$flakeDir/flake.lock" "$flakeDir"
-
-# For some reason we use NIX_STORE_DIR which causes unstable paths. This is
-# goofy. We can just use --store, which sets rootDir and does not have this
-# problem.
-actualStore=$NIX_STORE_DIR
-unset NIX_STORE_DIR
-NOCOLOR=1 TZ=UTC LC_ALL=C.UTF-8 nix flake metadata --store "$actualStore" "$flakeDir" | grep -v -e 'Locked URL:' -e 'Resolved URL:' > "$TEST_ROOT/metadata.out.actual"
-diff -u flake-metadata/metadata.out.expected "$TEST_ROOT/metadata.out.actual"

tests/functional/meson.build

@@ -39,7 +39,6 @@ functional_tests_scripts = [
   'flakes/follow-paths.sh',
   'flakes/build-paths.sh',
   'flakes/flake-in-submodule.sh',
-  'flakes/flake-metadata.sh',
   'flakes/flake-registry.sh',
   'gc.sh',
   'nix-collect-garbage-d.sh',

tests/functional2/flakes/assets/metadata/flake/flake.nix

@@ -0,0 +1,18 @@
+{
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable-small";
+    flake-utils.url = "github:numtide/flake-utils";
+    flake-compat = {
+      url = "github:edolstra/flake-compat";
+      flake = false;
+    };
+    lanzaboote = {
+      url = "github:nix-community/lanzaboote";
+      inputs.nixpkgs.follows = "nixpkgs";
+      inputs.flake-utils.follows = "flake-utils";
+      inputs.flake-compat.follows = "flake-compat";
+    };
+  };
+
+  outputs = { ... }: {};
+}

tests/functional2/flakes/assets/metadata/metadata.out

@@ -1,3 +1,5 @@
+Resolved URL:  path:$root/flake
+Locked URL:    path:$root/flake?lastModified=1000&narHash=sha256-V/Gp5MFC5UehsIwWzL2prFyG2j8jz5r4aLZIlvBzTjw%3D
 Path:          /nix/store/gaxb42z68bcr8lch467shvmnhjjzgd8b-source
 Last modified: 1970-01-01 00:16:40
 Inputs:

tests/functional2/flakes/test_metadata.py

@@ -0,0 +1,31 @@
+from testlib.fixtures.nix import Nix
+from testlib.fixtures.file_helper import with_files, CopyTree, AssetSymlink
+from testlib.fixtures.snapshot import Snapshot
+from pathlib import Path
+import os
+
+
+@with_files(
+    {
+        "flake": CopyTree("assets/metadata/flake"),
+        "metadata.out": AssetSymlink("assets/metadata/metadata.out"),
+    }
+)
+def test_metadata(nix: Nix, files: Path, snapshot: Snapshot):
+    nix.settings.add_xp_feature("nix-command", "flakes")
+    nix.env.dirs.nix_store_dir = "/nix/store"
+    nix.env["TZ"] = "UTC"
+    nix.env["LC_ALL"] = "C.UTF-8"
+
+    os.utime(files / "flake/flake.nix", (1000, 1000))
+    os.utime(files / "flake/flake.lock", (1000, 1000))
+    os.utime(files / "flake", (1000, 1000))
+
+    # We use NIX_STORE_DIR which causes unstable paths. This is goofy. We can
+    # just use `--store` which sets `rootDir` and does not have this problem.
+    result = (
+        nix.nix(["flake", "metadata", "--store", nix.env.dirs.real_store_dir, files / "flake"])
+        .run()
+        .ok()
+    )
+    assert snapshot("metadata.out") == result.stdout_s.replace(str(files), "$root")