zig test: std.testing.zig_exe_path is now available

it will be set to the path of the zig executable which is running
`zig test`.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/main.zig b/src/main.zig
index 15bb3be602..6c32529a5e 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -1828,7 +1828,9 @@ fn buildOutputType(
                     else => unreachable,
                 }
             }
-            try argv.append(exe_path);
+            try argv.appendSlice(&[_][]const u8{
+                exe_path, self_exe_path,
+            });
         } else {
             for (test_exec_args.items) |arg| {
                 try argv.append(arg orelse exe_path);