Backed out changeset 150afb585fe2 (bug 1721463) for causing python unit test failures. CLOSED TREE

python/mozbuild/mozbuild/gen_test_backend.py

@@ -32,14 +32,9 @@ def gen_test_backend():
 
         print("No build detected, test metadata may be incomplete.")
 
-        substs = EmptyConfig.default_substs
-
-        # Set ENABLE_TESTS so we still pick up manifests that are defined in
-        # moz.build files behind a TEST_DIRS variable.
-        substs["ENABLE_TESTS"] = "1"
-
         # If 'JS_STANDALONE' is set, tests that don't require an objdir won't
         # be picked up due to bug 1345209.
+        substs = EmptyConfig.default_substs
         if "JS_STANDALONE" in substs:
             del substs["JS_STANDALONE"]