diff --git a/justfile b/justfile
index 2332d58..3a01ec9 100644
--- a/justfile
+++ b/justfile
@@ -46,6 +46,16 @@ validate:
     --global-env-def "global_env" \
     `find . -type f -iname '*.d.tl' | xargs`
 
+test: build
+  rm -rf spec
+  mv build/spec spec
+  busted
+# luarocks \
+#   --lua-version {{ lua_version }} \
+#   test \
+#   --tree {{ rocks_tree }} \
+#   {{ rockspec_file }}
+
 # TODO : how to run a debugger on Teal code?
 debug:
   {{ lua }} debug.lua build/awesomewm.d.tl/init.lua
diff --git a/spec/example_spec.tl b/src/spec/example_spec.tl
similarity index 72%
rename from spec/example_spec.tl
rename to src/spec/example_spec.tl
index e41f8fb..7448c7d 100644
--- a/spec/example_spec.tl
+++ b/src/spec/example_spec.tl
@@ -1,3 +1,5 @@
+local assert = require("luassert")
+
 describe("Busted unit testing framework", function()
    describe("should be awesome", function()
       it("should be easy to use", function()
@@ -6,14 +8,13 @@ describe("Busted unit testing framework", function()
 
       it("should have lots of features", function()
          -- deep check comparisons!
-         assert.are.same({ table = "great" }, { table = "great" })
+         assert.same({ table = "great" }, { table = "great" })
 
          -- or check by reference!
-         assert.are_not.equal({ table = "great" }, { table = "great" })
+         assert.not_equal({ table = "great" }, { table = "great" })
 
          assert.truthy "this is a string" -- truthy: not false or nil
 
-         assert.True(1 == 1)
          assert.is_true(1 == 1)
 
          assert.falsy(nil)
@@ -23,7 +24,7 @@ describe("Busted unit testing framework", function()
       end)
 
       it("should provide some shortcuts to common functions", function()
-         assert.are.unique { { thing = 1 }, { thing = 2 }, { thing = 3 } }
+         assert.is_unique { { thing = 1 }, { thing = 2 }, { thing = 3 } }
       end)
    end)
 end)
diff --git a/tlconfig.lua b/tlconfig.lua
index aafa9c4..54272d0 100644
--- a/tlconfig.lua
+++ b/tlconfig.lua
@@ -5,4 +5,5 @@ return {
       "src/awesomewm.d.tl",
       "types",
    },
+   global_env_def = "busted",
 }