From fc7cf6fcfe668b37781d46cea03461fc6e1c6f3e Mon Sep 17 00:00:00 2001
From: Victor Engmark <victor@engmark.name>
Date: Thu, 10 Oct 2024 13:04:21 +1300
Subject: [PATCH] pre-commit: test meta hooks

Closes #270805 by verifying that #251418 fixes the issue.
---
 pkgs/tools/misc/pre-commit/default.nix |  4 +--
 pkgs/tools/misc/pre-commit/tests.nix   | 45 ++++++++++++++++++++++++++
 2 files changed, 47 insertions(+), 2 deletions(-)
 create mode 100644 pkgs/tools/misc/pre-commit/tests.nix

diff --git a/pkgs/tools/misc/pre-commit/default.nix b/pkgs/tools/misc/pre-commit/default.nix
index 22cd01055783f9..d332e175da062d 100644
--- a/pkgs/tools/misc/pre-commit/default.nix
+++ b/pkgs/tools/misc/pre-commit/default.nix
@@ -181,8 +181,8 @@ buildPythonApplication rec {
     "pre_commit"
   ];
 
-  passthru.tests.version = testers.testVersion {
-    package = pre-commit;
+  passthru.tests = callPackage ./tests.nix {
+    inherit git pre-commit;
   };
 
   meta = with lib; {
diff --git a/pkgs/tools/misc/pre-commit/tests.nix b/pkgs/tools/misc/pre-commit/tests.nix
new file mode 100644
index 00000000000000..a1b40bc2d8ccef
--- /dev/null
+++ b/pkgs/tools/misc/pre-commit/tests.nix
@@ -0,0 +1,45 @@
+{
+  git,
+  pre-commit,
+  runCommand,
+  testers,
+}:
+{
+  check-meta-hooks =
+    runCommand "check-meta-hooks"
+      {
+        nativeBuildInputs = [
+          git
+          pre-commit
+        ];
+      }
+      ''
+        cd "$(mktemp --directory)"
+        export HOME="$PWD"
+        cat << 'EOF' > .pre-commit-config.yaml
+        repos:
+          - repo: local
+            hooks:
+              - id: echo
+                name: echo
+                entry: echo
+                files: \.yaml$
+                language: system
+          - repo: meta
+            hooks:
+              - id: check-hooks-apply
+              - id: check-useless-excludes
+              - id: identity
+        EOF
+        git config --global user.email "you@example.com"
+        git config --global user.name "Your Name"
+        git init --initial-branch=main
+        git add .
+        pre-commit run --all-files
+        touch $out
+      '';
+
+  version = testers.testVersion {
+    package = pre-commit;
+  };
+}