diff --git a/src/promptforge/testing/__init__.py b/src/promptforge/testing/__init__.py
new file mode 100644
index 0000000..79867c1
--- /dev/null
+++ b/src/promptforge/testing/__init__.py
@@ -0,0 +1,5 @@
+from .ab_test import ABTest, ABTestConfig
+from .metrics import TestMetrics, MetricsCollector
+from .results import TestResult, ComparisonResult
+
+__all__ = ["ABTest", "ABTestConfig", "TestMetrics", "MetricsCollector", "TestResult", "ComparisonResult"]
\ No newline at end of file