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feat: eval_state::test_init

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(cherry picked from commit 040982222c9eb8ea91d7174e6f2e21bbc6cda8a4)
This commit is contained in:
Robert Hensing 2024-04-10 14:34:51 +02:00
parent 4095bda02a
commit 726e891be8
1 changed files with 18 additions and 13 deletions
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31
rust/nix-expr/src/eval_state.rs
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@ -353,27 +353,32 @@ impl Drop for EvalState {
}
}
/// Initialize the Nix library for testing. This includes some modifications to the Nix settings, that must not be used in production.
/// Use at your own peril, in rust test suites.
pub fn test_init() {
init().unwrap();
// During development, we encountered a problem where the build hook
// would cause the test suite to reinvokes itself, causing an infinite loop.
// While _NIX_TEST_NO_SANDBOX=1 should prevent this, we may also set the
// build hook to "" to prevent this.
// settings::set("build-hook", "")?;
// When testing in the sandbox, the default build dir would be a parent of the storeDir,
// which causes an error. So we set a custom build dir here.
nix_util::settings::set("sandbox-build-dir", "/custom-build-dir-for-test").unwrap();
std::env::set_var("_NIX_TEST_NO_SANDBOX", "1");
}
#[cfg(test)]
mod tests {
use ctor::ctor;
use nix_util::settings;
use super::*;
#[ctor]
fn setup() {
init().unwrap();
// During development, we encountered a problem where the build hook
// would cause the test suite to reinvokes itself, causing an infinite loop.
// While _NIX_TEST_NO_SANDBOX=1 should prevent this, we may also set the
// build hook to "" to prevent this.
// settings::set("build-hook", "")?;
// When testing in the sandbox, the default build dir would be a parent of the storeDir,
// which causes an error. So we set a custom build dir here.
settings::set("sandbox-build-dir", "/custom-build-dir-for-test").unwrap();
std::env::set_var("_NIX_TEST_NO_SANDBOX", "1");
test_init();
}
#[test]