chore(3p/nix/tests): Move language test files to src/tests r/1387

These files will be integrated into the evaluator unit tests instead
of running separately via a shell script.

Change-Id: I1d229e73b1d862777f5108c86891689900edefbe
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1275
Tested-by: BuildkiteCI
Reviewed-by: Kane York <rikingcoding@gmail.com>
Reviewed-by: isomer <isomer@tvl.fyi>

1 files changed, 21 insertions, 0 deletions

diff --git a/third_party/nix/src/tests/lang/eval-okay-substring.nix b/third_party/nix/src/tests/lang/eval-okay-substring.nix
new file mode 100644
index 0000000000..424af00d9b
--- /dev/null
+++ b/third_party/nix/src/tests/lang/eval-okay-substring.nix
@@ -0,0 +1,21 @@
+with builtins;
+
+let
+
+  s = "foobar";
+
+in
+
+substring 1 2 s
++ "x"
++ substring 0 (stringLength s) s
++ "y"
++ substring 3 100 s
++ "z"
++ substring 2 (sub (stringLength s) 3) s
++ "a"
++ substring 3 0 s
++ "b"
++ substring 3 1 s
++ "c"
++ substring 5 10 "perl"