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test(tvix/eval): add identity tests for literal evaluation

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Change-Id: Id3f37fbe341e15e9428ef1d579d61a514232c0e8
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6132
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
This commit is contained in:
Vincent Ambo 2022-08-10 19:31:18 +03:00 • committed by tazjin
parent 3671056640
commit 96e9f750c5
19 changed files with 56 additions and 2 deletions
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22
tvix/eval/src/tests/mod.rs
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@ -2,14 +2,32 @@ use crate::eval::interpret;
use test_generator::test_resources;
// identity-* tests contain Nix code snippets which should evaluate to
// themselves exactly (i.e. literals).
#[test_resources("src/tests/tvix_tests/identity-*.nix")]
fn identity(code_path: &str) {
let code = std::fs::read_to_string(code_path).expect("should be able to read test code");
let result = interpret(&code).expect("evaluation of identity test should succeed");
let result_str = format!("{}", result);
assert_eq!(
code.trim(),
result_str,
"result value representation (right) must match expectation (left)"
)
}
// eval-okay-* tests contain a snippet of Nix code, and an expectation
// of the produced string output of the evaluator.
//
// These evaluations are always supposed to succeed, i.e. all snippets
// are guaranteed to be valid Nix code.
// eval-okay-* tests from the original Nix test suite.
#[cfg(feature = "nix_tests")]
#[test_resources("src/tests/nix_tests/eval-okay-*.nix")]
fn eval_okay(code_path: &str) {
fn nix_eval_okay(code_path: &str) {
let base = code_path
.strip_suffix("nix")
.expect("test files always end in .nix");
@ -24,6 +42,6 @@ fn eval_okay(code_path: &str) {
assert_eq!(
exp.trim(),
result_str,
"result value (and its representation) must match expectation"
"result value representation (right) must match expectation (left)"
);
}