Enable some language tests that were accidentally disabled

This didn't run because the corresponding .exp file didn't exist.

tests/lang.sh

@@ -2,6 +2,7 @@ source common.sh
 
 export TEST_VAR=foo # for eval-okay-getenv.nix
 export NIX_REMOTE=dummy://
+export NIX_STORE_DIR=/nix/store
 
 nix-instantiate --eval -E 'builtins.trace "Hello" 123' 2>&1 | grep -q Hello
 nix-instantiate --eval -E 'builtins.addErrorContext "Hello" 123' 2>&1

tests/lang/eval-okay-closure.exp

@@ -0,0 +1 @@
+[ { foo = true; key = -13; } { foo = true; key = -12; } { foo = true; key = -11; } { foo = true; key = -9; } { foo = true; key = -8; } { foo = true; key = -7; } { foo = true; key = -5; } { foo = true; key = -4; } { foo = true; key = -3; } { key = -1; } { foo = true; key = 0; } { foo = true; key = 1; } { foo = true; key = 2; } { foo = true; key = 4; } { foo = true; key = 5; } { foo = true; key = 6; } { key = 8; } { foo = true; key = 9; } { foo = true; key = 10; } { foo = true; key = 13; } { foo = true; key = 14; } { foo = true; key = 15; } { key = 17; } { foo = true; key = 18; } { foo = true; key = 19; } { foo = true; key = 22; } { foo = true; key = 23; } { key = 26; } { foo = true; key = 27; } { foo = true; key = 28; } { foo = true; key = 31; } { foo = true; key = 32; } { key = 35; } { foo = true; key = 36; } { foo = true; key = 40; } { foo = true; key = 41; } { key = 44; } { foo = true; key = 45; } { foo = true; key = 49; } { key = 53; } { foo = true; key = 54; } { foo = true; key = 58; } { key = 62; } { foo = true; key = 67; } { key = 71; } { key = 80; } ]

tests/lang/eval-okay-functionargs.exp

@@ -0,0 +1 @@
+[ "stdenv" "fetchurl" "aterm-stdenv" "aterm-stdenv2" "libX11" "libXv" "mplayer-stdenv2.libXv-libX11" "mplayer-stdenv2.libXv-libX11_2" "nix-stdenv-aterm-stdenv" "nix-stdenv2-aterm2-stdenv2" ]

tests/lang/eval-okay-path-antiquotation.exp

@@ -0,0 +1 @@
+{ absolute = /foo; expr = /home/eelco/Dev/nix/tests/lang/foo/bar; home = /tmp/nix-shell.ZeLfDw/nix-test/default/test-home/foo; notfirst = /home/eelco/Dev/nix/tests/lang/bar/foo; simple = /home/eelco/Dev/nix/tests/lang/foo; slashes = /foo/bar; surrounded = /home/eelco/Dev/nix/tests/lang/a-foo-b; }

tests/lang/eval-okay-path.exp

@@ -0,0 +1 @@
+"/nix/store/ya937r4ydw0l6kayq8jkyqaips9c75jm-output"