diff --git a/tests/test_subprocess_result.py b/tests/test_subprocess_result.py
new file mode 100644
index 0000000..f99d547
--- /dev/null
+++ b/tests/test_subprocess_result.py
@@ -0,0 +1,14 @@
+from suby.subprocess_result import SubprocessResult
+
+
+def test_auto_id():
+    assert SubprocessResult().id != SubprocessResult().id
+    assert isinstance(SubprocessResult().id, str)
+    assert len(SubprocessResult().id) > 10
+
+
+def test_default_values():
+    assert SubprocessResult().stdout is None
+    assert SubprocessResult().stderr is None
+    assert SubprocessResult().returncode is None
+    assert SubprocessResult().killed_by_token == False