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authorVincent Ambo <mail@tazj.in>2022-10-22T13·27+0300
committertazjin <tazjin@tvl.su>2022-10-22T18·20+0000
commit359444360b42c428ae10e1ad612a6f4966f11652 (patch)
treec69cb288678d9f9d07b603f3c7066163f077aa18
parentd4fa3152e92ef72d9ee050000b1fd4952203e383 (diff)
test(tvix/eval): add a test for observing an infinite attribute set r/5176
Note that this test (ironically) fails if the observer is used (e.g.
with --trace-runtime), but that's a separate issue.

Change-Id: I952eaeac8b5a7acce9c66cd4744ec570280748e7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7055
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
-rw-r--r--tvix/eval/src/tests/tvix_tests/eval-okay-observe-infinite-attrs.exp1
-rw-r--r--tvix/eval/src/tests/tvix_tests/eval-okay-observe-infinite-attrs.nix4
2 files changed, 5 insertions, 0 deletions
diff --git a/tvix/eval/src/tests/tvix_tests/eval-okay-observe-infinite-attrs.exp b/tvix/eval/src/tests/tvix_tests/eval-okay-observe-infinite-attrs.exp
new file mode 100644
index 0000000000..bbb332a5ee
--- /dev/null
+++ b/tvix/eval/src/tests/tvix_tests/eval-okay-observe-infinite-attrs.exp
@@ -0,0 +1 @@
+[ "x" "y" ]
diff --git a/tvix/eval/src/tests/tvix_tests/eval-okay-observe-infinite-attrs.nix b/tvix/eval/src/tests/tvix_tests/eval-okay-observe-infinite-attrs.nix
new file mode 100644
index 0000000000..684c88f800
--- /dev/null
+++ b/tvix/eval/src/tests/tvix_tests/eval-okay-observe-infinite-attrs.nix
@@ -0,0 +1,4 @@
+# The below attribute set is infinitely large, but we should be able
+# to observe it as long as we don't access its entire value.
+
+let as = { x = 123; y = as; }; in builtins.attrNames as.y.y