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authorsterni <sternenseemann@systemli.org>2022-11-23T19·57+0100
committersterni <sternenseemann@systemli.org>2022-12-02T14·41+0000
commit90fe9a51d7f0837d67d90661c9355f7531621a4d (patch)
tree4d2b5f2ffa49f6d19aabd2f0016f1934553206da /tvix/eval/src/tests/tvix_tests/eval-fail-outer-value-never-pointer-equal.nix
parent5ab86ab8dcb59b5f63daa5ec869c8c6cbf97a458 (diff)
test(tvix/eval): check inner forcing despite declaring pointer r/5374
Maybe counter-intuitively the inner elements of a list or the
attribute values of an attribute set will be forced despite
pointer equality (but only one layer deep).

Change-Id: I485d96452fb56f5fb342d39039c9137725b33d3f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7371
Reviewed-by: Adam Joseph <adam@westernsemico.com>
Tested-by: BuildkiteCI
Diffstat (limited to 'tvix/eval/src/tests/tvix_tests/eval-fail-outer-value-never-pointer-equal.nix')
-rw-r--r--tvix/eval/src/tests/tvix_tests/eval-fail-outer-value-never-pointer-equal.nix7
1 files changed, 7 insertions, 0 deletions
diff --git a/tvix/eval/src/tests/tvix_tests/eval-fail-outer-value-never-pointer-equal.nix b/tvix/eval/src/tests/tvix_tests/eval-fail-outer-value-never-pointer-equal.nix
new file mode 100644
index 000000000000..a8c3cedf61d7
--- /dev/null
+++ b/tvix/eval/src/tests/tvix_tests/eval-fail-outer-value-never-pointer-equal.nix
@@ -0,0 +1,7 @@
+# For an explanation of this behavior see //tvix/docs/value-pointer-equality.md
+let
+  x = { foo = throw "foo"; };
+in
+
+# while `builtins.seq x null` would succeed, this fails!
+x == x