From 4af9966c73666ed77a7a4c0dc498bfba1e853070 Mon Sep 17 00:00:00 2001
From: Scott Worley <scottworley@scottworley.com>
Date: Thu, 11 Jun 2020 13:33:18 -0700
Subject: [PATCH] Tests use a private /nix/store

This allows the tests to run inside a nix build.  Otherwise, it fails with

  error: creating directory '/nix/var': Permission denied

Bonus: This avoids polluting the real store with test artifacts.

See also https://github.com/NixOS/nix/issues/13
---
 tests/alias.sh          | 2 +-
 tests/core.sh           | 2 +-
 tests/lib/test-setup.sh | 7 +++++++
 tests/multi-update.sh   | 2 +-
 tests/pin-twice.sh      | 2 +-
 5 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/tests/alias.sh b/tests/alias.sh
index 368fc1e..928ceab 100755
--- a/tests/alias.sh
+++ b/tests/alias.sh
@@ -13,7 +13,7 @@ python3 ./pinch.py pin "$conf"
 
 actual_env_command=`python3 ./pinch.py update --dry-run "$conf"`
 
-expected_env_command_RE='^nix-env --profile /nix/var/nix/profiles/per-user/[^/]+/channels --show-trace --file '\''<nix/unpack-channel.nix>'\'' --install --from-expression '\''f: f \{ name = "(repo-[0-9]{10}-[0-9a-f]{11})"; channelName = "bar"; src = builtins.storePath "/nix/store/.{32}-\1.tar.xz"; \}'\'' '\''f: f \{ name = "\1"; channelName = "foo"; src = builtins.storePath "/nix/store/.{32}-\1.tar.xz"; \}'\''$'
+expected_env_command_RE='^nix-env --profile /nix/var/nix/profiles/per-user/[^/]+/channels --show-trace --file '\''<nix/unpack-channel.nix>'\'' --install --from-expression '\''f: f \{ name = "(repo-[0-9]{10}-[0-9a-f]{11})"; channelName = "bar"; src = builtins.storePath "'"$NIX_STORE_DIR"'/.{32}-\1.tar.xz"; \}'\'' '\''f: f \{ name = "\1"; channelName = "foo"; src = builtins.storePath "'"$NIX_STORE_DIR"'/.{32}-\1.tar.xz"; \}'\''$'
 
 if echo "$actual_env_command" | egrep "$expected_env_command_RE" > /dev/null;then
   echo PASS
diff --git a/tests/core.sh b/tests/core.sh
index 5ef652e..5d11707 100755
--- a/tests/core.sh
+++ b/tests/core.sh
@@ -8,7 +8,7 @@ python3 ./pinch.py pin "$conf"
 
 actual_env_command=`python3 ./pinch.py update --dry-run "$conf"`
 
-expected_env_command_RE='^nix-env --profile /nix/var/nix/profiles/per-user/[^/]+/channels --show-trace --file '\''<nix/unpack-channel.nix>'\'' --install --from-expression '\''f: f \{ name = "(repo-[0-9]{10}-[0-9a-f]{11})"; channelName = "foo"; src = builtins.storePath "/nix/store/.{32}-\1.tar.xz"; \}'\''$'
+expected_env_command_RE='^nix-env --profile /nix/var/nix/profiles/per-user/[^/]+/channels --show-trace --file '\''<nix/unpack-channel.nix>'\'' --install --from-expression '\''f: f \{ name = "(repo-[0-9]{10}-[0-9a-f]{11})"; channelName = "foo"; src = builtins.storePath "'"$NIX_STORE_DIR"'/.{32}-\1.tar.xz"; \}'\''$'
 
 if echo "$actual_env_command" | egrep "$expected_env_command_RE" > /dev/null;then
   echo PASS
diff --git a/tests/lib/test-setup.sh b/tests/lib/test-setup.sh
index 35a4e73..66d13eb 100644
--- a/tests/lib/test-setup.sh
+++ b/tests/lib/test-setup.sh
@@ -8,6 +8,11 @@ export GIT_COMMITTER_EMAIL=auto@mati.on
 cache_dir=$(mktemp -d)
 export XDG_CACHE_HOME=$cache_dir
 
+nix_store=$(mktemp -d)
+nix_state=$(mktemp -d)
+export NIX_STORE_DIR=$nix_store
+export NIX_STATE_DIR=$nix_state
+
 foo_setup() {
 
   repo_dir="`mktemp -d`"
@@ -33,6 +38,8 @@ test_cleanup() {
   if [ "$repo_dir"  ];then rm -rf "$repo_dir";  fi
   if [ "$conf"      ];then rm     "$conf";      fi
   if [ "$cache_dir" ];then rm -rf "$cache_dir"; fi
+  if [ "$nix_store" ];then rm -rf "$nix_store"; fi
+  if [ "$nix_state" ];then rm -rf "$nix_state"; fi
 }
 
 trap test_cleanup EXIT INT TERM
diff --git a/tests/multi-update.sh b/tests/multi-update.sh
index 74899ff..cd6e90b 100755
--- a/tests/multi-update.sh
+++ b/tests/multi-update.sh
@@ -17,7 +17,7 @@ actual_env_command=`python3 ./pinch.py update --dry-run "$conf" "$conf2"`
 
 rm -rf "$conf2"
 
-expected_env_command_RE='^nix-env --profile /nix/var/nix/profiles/per-user/[^/]+/channels --show-trace --file '\''<nix/unpack-channel.nix>'\'' --install --from-expression '\''f: f \{ name = "(repo-[0-9]{10}-[0-9a-f]{11})"; channelName = "bar"; src = builtins.storePath "/nix/store/.{32}-\1.tar.xz"; \}'\'' '\''f: f \{ name = "\1"; channelName = "foo"; src = builtins.storePath "/nix/store/.{32}-\1.tar.xz"; \}'\''$'
+expected_env_command_RE='^nix-env --profile /nix/var/nix/profiles/per-user/[^/]+/channels --show-trace --file '\''<nix/unpack-channel.nix>'\'' --install --from-expression '\''f: f \{ name = "(repo-[0-9]{10}-[0-9a-f]{11})"; channelName = "bar"; src = builtins.storePath "'"$NIX_STORE_DIR"'/.{32}-\1.tar.xz"; \}'\'' '\''f: f \{ name = "\1"; channelName = "foo"; src = builtins.storePath "'"$NIX_STORE_DIR"'/.{32}-\1.tar.xz"; \}'\''$'
 
 if echo "$actual_env_command" | egrep "$expected_env_command_RE" > /dev/null;then
   echo PASS
diff --git a/tests/pin-twice.sh b/tests/pin-twice.sh
index dec02f0..ee50174 100755
--- a/tests/pin-twice.sh
+++ b/tests/pin-twice.sh
@@ -17,7 +17,7 @@ python3 ./pinch.py pin "$conf"
 
 actual_env_command=`python3 ./pinch.py update --dry-run "$conf"`
 
-expected_env_command_RE='^nix-env --profile /nix/var/nix/profiles/per-user/[^/]+/channels --show-trace --file '\''<nix/unpack-channel.nix>'\'' --install --from-expression '\''f: f \{ name = "(repo-[0-9]{10}-[0-9a-f]{11})"; channelName = "foo"; src = builtins.storePath "/nix/store/.{32}-\1.tar.xz"; \}'\''$'
+expected_env_command_RE='^nix-env --profile /nix/var/nix/profiles/per-user/[^/]+/channels --show-trace --file '\''<nix/unpack-channel.nix>'\'' --install --from-expression '\''f: f \{ name = "(repo-[0-9]{10}-[0-9a-f]{11})"; channelName = "foo"; src = builtins.storePath "'"$NIX_STORE_DIR"'/.{32}-\1.tar.xz"; \}'\''$'
 
 if echo "$actual_env_command" | egrep "$expected_env_command_RE" > /dev/null;then
   echo PASS
-- 
2.44.1