diff --git a/tests/test_cdx_api.py b/tests/test_cdx_api.py
new file mode 100644
index 0000000..d574954
--- /dev/null
+++ b/tests/test_cdx_api.py
@@ -0,0 +1,36 @@
+from waybackpy.cdx_api import WaybackMachineCDXServerAPI
+
+
+def test_a():
+    user_agent = "Mozilla/5.0 (MacBook Air; M1 Mac OS X 11_4) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.1.1 Safari/604.1"
+    url = "https://twitter.com/jack"
+
+    wayback = WaybackMachineCDXServerAPI(
+        url=url,
+        user_agent=user_agent,
+        match_type="prefix",
+        collapses=["urlkey"],
+        start_timestamp="201001",
+        end_timestamp="201002",
+    )
+    #  timeframe bound prefix matching enabled along with active urlkey based collapsing
+
+    snapshots = wayback.snapshots()  # <class 'generator'>
+
+    for snapshot in snapshots:
+        assert snapshot.timestamp.startswith("2010")
+
+
+def test_b():
+    user_agent = "Mozilla/5.0 (MacBook Air; M1 Mac OS X 11_4) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.1.1 Safari/604.1"
+    url = "https://www.google.com"
+
+    wayback = WaybackMachineCDXServerAPI(
+        url=url, user_agent=user_agent, start_timestamp="202101", end_timestamp="202112"
+    )
+    #  timeframe bound prefix matching enabled along with active urlkey based collapsing
+
+    snapshots = wayback.snapshots()  # <class 'generator'>
+
+    for snapshot in snapshots:
+        assert snapshot.timestamp.startswith("2021")