feat(tvix/glue): introduce test suite for context strings r/7404

This is an additional test suite on the top of the Nix ones
for context strings matters.

It already smoked out multiple mistakes and potential bugs and non-deterministic result from the evaluator.

It uses a similar technology as the one in the tvix-eval albeit we instantiate a fully fledged evaluator
with in-memory store.

We copy the files instead of symlinking them because crates are built in
isolation, so symlinks cannot work.

Change-Id: I63ae225ce4f83c6e2c8ccd60d779c2f8eb9d08fb
Reviewed-on: https://cl.tvl.fyi/c/depot/+/10619
Autosubmit: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>

1 files changed, 12 insertions, 1 deletions

diff --git a/tvix/Cargo.nix b/tvix/Cargo.nix
index 432c83192b3b..170e53dbd22b 100644
--- a/tvix/Cargo.nix
+++ b/tvix/Cargo.nix
@@ -10648,6 +10648,14 @@ rec {
             packageId = "lazy_static";
           }
           {
+            name = "pretty_assertions";
+            packageId = "pretty_assertions";
+          }
+          {
+            name = "rstest";
+            packageId = "rstest";
+          }
+          {
             name = "tempfile";
             packageId = "tempfile";
           }
@@ -10656,7 +10664,10 @@ rec {
             packageId = "test-case";
           }
         ];
-
+        features = {
+          "default" = [ "nix_tests" ];
+        };
+        resolvedDefaultFeatures = [ "default" "nix_tests" ];
       };
       "tvix-serde" = rec {
         crateName = "tvix-serde";