diff --git a/Cargo.toml b/Cargo.toml
index be681a2..309ae38 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -31,7 +31,7 @@ dev.panic = "abort"
 release.panic = "abort"
 
 [[test]]
-name = "main"
+name = "test"
 harness = false
 
 [features]
diff --git a/tests/main.lua b/tests/test.lua
similarity index 81%
rename from tests/main.lua
rename to tests/test.lua
index 079ac1f..a3c70e3 100644
--- a/tests/main.lua
+++ b/tests/test.lua
@@ -1,5 +1,10 @@
-if (...) ~= nil and (...).type == "group" then return end -- prevent recursive main call
-local fs = require("lb:fs")
+if (...) ~= nil and (...).type == "group" then return end -- prevent recursive harness call
+
+local ok = pcall(require, "lb:task")
+if not ok then error("lua test harness requires lb:task module") end
+local ok, fs = pcall(require, "lb:fs")
+if not ok then error("lua test harness requires lb:fs module") end
+
 local global = _G
 local colors = {
   reset = "\x1b[0m",
@@ -88,10 +93,15 @@ local function run(item)
 end
 
 return run(create_group("", function()
-  for entry in fs:glob("{tests,crates/*/tests}/**/*.lua") do
-    local path = entry:path():sub(3)
-    local f, err = loadfile(path)
-    if not f then error(err) end
-    describe(path, f)
+  local function glob(path, pat)
+    for entry in fs:glob_dir(path, pat) do
+      local path = entry:path()
+      local f, err = loadfile(path)
+      if not f then error(err) end
+      describe(path, f)
+    end
   end
+
+  glob("tests", "**/*.lua")
+  glob("crates", "*/tests/**/*.lua")
 end))
diff --git a/tests/main.rs b/tests/test.rs
similarity index 96%
rename from tests/main.rs
rename to tests/test.rs
index 3218d22..5d09542 100644
--- a/tests/main.rs
+++ b/tests/test.rs
@@ -13,7 +13,7 @@ fn main() -> ExitCode {
         rt.unhandled_error(error_cb).build().unwrap()
     };
 
-    let path = "tests/main.lua";
+    let path = "tests/test.lua";
     let main = lua.spawn(async move |s| {
         if let Err(ref err) = s.load(Chunk::new(fs::read(path).unwrap()).path(path)) {
             s.report_error(err);