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Merge pull request #11303 from NixOS/always-quick-build

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Use nixosTest.quickBuild behavior by default
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tomberek 2024-08-16 22:07:05 -04:00 committed by GitHub
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3 changed files with 12 additions and 56 deletions
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8
doc/manual/src/development/testing.md
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@ -276,14 +276,12 @@ To ensure that characterisation testing doesn't make it harder to intentionally
We run the functional tests not just in the build, but also in VM tests.
This helps us ensure that Nix works correctly on NixOS, and environments that have similar characteristics that are hard to reproduce in a build environment.
The recommended way to run these tests during development is:
These can be run with:
```shell
nix build .#hydraJobs.tests.functional_user.quickBuild
nix build .#hydraJobs.tests.functional_user
```
The `quickBuild` attribute configures the test to use a `nix` package that's built without integration tests, so that you can iterate on the tests without performing recompilations due to the changed sources for `installCheck`.
Generally, this build is sufficient, but in nightly or CI we also test the attributes `functional_root` and `functional_trusted`, in which the test suite is run with different levels of authorization.
## Integration tests
@ -294,8 +292,6 @@ Because these tests are expensive and require more than what the standard github
You can run them manually with `nix build .#hydraJobs.tests.{testName}` or `nix-build -A hydraJobs.tests.{testName}`.
If you are testing a build of `nix` that you haven't compiled yet, you may iterate faster by appending the `quickBuild` attribute: `nix build .#hydraJobs.tests.{testName}.quickBuild`.
## Installer tests
After a one-time setup, the Nix repository's GitHub Actions continuous integration (CI) workflow can test the installer each time you push to a branch.

13
tests/nixos/default.nix
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@ -4,20 +4,24 @@ let
nixos-lib = import (nixpkgs + "/nixos/lib") { };
noTests = pkg: pkg.overrideAttrs (
finalAttrs: prevAttrs: {
doCheck = false;
doInstallCheck = false;
});
# https://nixos.org/manual/nixos/unstable/index.html#sec-calling-nixos-tests
runNixOSTestFor = system: test:
(nixos-lib.runTest {
imports = [
test
# Add the quickBuild attribute to the check packages
./quick-build.nix
];
hostPkgs = nixpkgsFor.${system}.native;
defaults = {
nixpkgs.pkgs = nixpkgsFor.${system}.native;
nix.checkAllErrors = false;
nix.package = noTests nixpkgsFor.${system}.native.nix;
};
_module.args.nixpkgs = nixpkgs;
_module.args.system = system;
@ -29,6 +33,9 @@ let
forNix = nixVersion: runNixOSTestFor system {
imports = [test];
defaults.nixpkgs.overlays = [(curr: prev: {
# NOTE: noTests pkg might not have been built yet for some older versions of the package
# and in versions before 2.25, the untested build wasn't shared with the tested build yet
# Add noTests here when those versions become irrelevant.
nix = (builtins.getFlake "nix/${nixVersion}").packages.${system}.nix;
})];
};

47
tests/nixos/quick-build.nix
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@ -1,47 +0,0 @@
test@{ lib, extendModules, ... }:
let
inherit (lib) mkOption types;
in
{
options = {
quickBuild = mkOption {
description = ''
Whether to perform a "quick" build of the Nix package to test.
When iterating on the functional tests, it's recommended to "set" this
to `true`, so that changes to the functional tests don't require any
recompilation of the package.
You can do so by building the `.quickBuild` attribute on the check package,
e.g:
```console
nix build .#hydraJobs.functional_user.quickBuild
```
We don't enable this by default to avoid the mostly unnecessary work of
performing an additional build of the package in cases where we build
the package normally anyway, such as in our pre-merge CI.
'';
type = types.bool;
default = false;
};
};
config = {
passthru.quickBuild =
let withQuickBuild = extendModules { modules = [{ quickBuild = true; }]; };
in withQuickBuild.config.test;
defaults = { pkgs, ... }: {
config = lib.mkIf test.config.quickBuild {
nix.package = pkgs.nixComponents.nix-cli;
system.forbiddenDependenciesRegexes = [
# This would indicate that the quickBuild feature is broken.
# It could happen if NixOS has a dependency on pkgs.nix instead of
# config.nix.package somewhere.
(builtins.unsafeDiscardStringContext pkgs.nix.outPath)
];
};
};
};
}