tests/functional2/lang: Migrate eof tests

Call it a bug, call it a feature, but the old testing framework
ungracefully shits itself when it has no tests to run … in other words,
we finally migrated all the parse-fail tests 🎉

Change-Id: Ibd7f1c04d9a396a20f14361af7924f0074d1ac23

tests/functional/lang.sh

@@ -38,24 +38,6 @@ set +x
 badDiff=0
 badExitCode=0
 
-for i in parse-fail-*.nix; do
-    echo "parsing $i (should fail)";
-    i=$(basename "$i" .nix)
-
-    declare -a flags=()
-    if test -e "$i.flags"; then
-        read -r -a flags < "$i.flags"
-    fi
-    if expectStderr 1 nix-instantiate --parse "${flags[@]}" "$i.nix" > "$i.err"
-    then
-        sed -i "s!$(pwd)!/pwd!g" "$i.err"
-        diffAndAccept "$i" err err.exp
-    else
-        echo "FAIL: $i shouldn't parse"
-        badExitCode=1
-    fi
-done
-
 for i in eval-fail-*.nix; do
     echo "evaluating $i (should fail)";
     i=$(basename "$i" .nix)

tests/functional2/lang/parser-eof/parse-fail-string.err.exp

@@ -1,5 +1,5 @@
 error: syntax error, unexpected end of file, expecting '"'
-       at /pwd/parse-fail-eof-in-string.nix:3:6:
+       at /pwd/in.nix:3:6:
             2| # Note that this file must not end with a newline.
             3| a 1"$
              |      ^

tests/functional2/lang/parser-eof/parse-fail.err.exp

@@ -1,5 +1,5 @@
 error: syntax error, unexpected end of file, expecting expression
-       at /pwd/parse-fail-eof-pos.nix:3:1:
+       at /pwd/in.nix:3:1:
             2| # no content
             3|
              | ^