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nixos/tests/qemu-vm-store: init

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nikstur 2024-02-23 00:00:37 +01:00
parent ded6d983d6
commit 0e5f929851
2 changed files with 72 additions and 0 deletions
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1
nixos/tests/all-tests.nix
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@ -799,6 +799,7 @@ in {
qemu-vm-restrictnetwork = handleTest ./qemu-vm-restrictnetwork.nix {};
qemu-vm-volatile-root = runTest ./qemu-vm-volatile-root.nix;
qemu-vm-external-disk-image = runTest ./qemu-vm-external-disk-image.nix;
qemu-vm-store = runTest ./qemu-vm-store.nix;
qgis = handleTest ./qgis.nix { qgisPackage = pkgs.qgis; };
qgis-ltr = handleTest ./qgis.nix { qgisPackage = pkgs.qgis-ltr; };
qownnotes = handleTest ./qownnotes.nix {};

71
nixos/tests/qemu-vm-store.nix Normal file
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@ -0,0 +1,71 @@
{ lib, ... }: {
name = "qemu-vm-store";
meta.maintainers = with lib.maintainers; [ nikstur ];
nodes = {
sharedWritable = {
virtualisation.writableStore = true;
};
sharedReadOnly = {
virtualisation.writableStore = false;
};
imageWritable = {
virtualisation.useNixStoreImage = true;
virtualisation.writableStore = true;
};
imageReadOnly = {
virtualisation.useNixStoreImage = true;
virtualisation.writableStore = false;
};
fullDisk = {
virtualisation.useBootLoader = true;
};
};
testScript = ''
build_derivation = """
nix-build --option substitute false -E 'derivation {
name = "t";
builder = "/bin/sh";
args = ["-c" "echo something > $out"];
system = builtins.currentSystem;
preferLocalBuild = true;
}'
"""
start_all()
with subtest("Nix Store is writable"):
sharedWritable.succeed(build_derivation)
imageWritable.succeed(build_derivation)
fullDisk.succeed(build_derivation)
with subtest("Nix Store is read only"):
sharedReadOnly.fail(build_derivation)
imageReadOnly.fail(build_derivation)
# Checking whether the fs type is 9P is just a proxy to test whether the
# Nix Store is shared. If we switch to a different technology (e.g.
# virtiofs) for sharing, we need to adjust these tests.
with subtest("Nix store is shared from the host via 9P"):
sharedWritable.succeed("findmnt --kernel --type 9P /nix/.ro-store")
sharedReadOnly.succeed("findmnt --kernel --type 9P /nix/.ro-store")
with subtest("Nix store is not shared via 9P"):
imageWritable.fail("findmnt --kernel --type 9P /nix/.ro-store")
imageReadOnly.fail("findmnt --kernel --type 9P /nix/.ro-store")
with subtest("Nix store is not mounted separately"):
rootDevice = fullDisk.succeed("stat -c %d /")
nixStoreDevice = fullDisk.succeed("stat -c %d /nix/store")
assert rootDevice == nixStoreDevice, "Nix store is mounted separately from the root fs"
'';
}