diff --git a/tests/test_delete_queue.py b/tests/test_delete_queue.py
new file mode 100644
index 0000000..01c6b0f
--- /dev/null
+++ b/tests/test_delete_queue.py
@@ -0,0 +1,160 @@
+from databusclient.api.delete import DeleteQueue, _confirm_delete
+from databusclient.api import delete
+
+
+def test_new_queue_is_empty():
+    q = DeleteQueue("fake-key")
+    assert q.is_empty() is True
+    assert q.is_not_empty() is False
+
+
+def test_add_uri_makes_queue_not_empty():
+    q = DeleteQueue("fake-key")
+    q.add_uri("https://databus.dbpedia.org/acc/group")
+    assert q.is_empty() is False
+    assert q.is_not_empty() is True
+
+
+def test_add_uris_adds_all():
+    q = DeleteQueue("fake-key")
+    q.add_uris(
+        [
+            "https://databus.dbpedia.org/acc/group",
+            "https://databus.dbpedia.org/acc/group/artifact",
+            "https://databus.dbpedia.org/acc/group/artifact/2024.01.01",
+        ]
+    )
+    assert len(q.queue) == 3
+
+
+def test_duplicate_uri_stored_once():
+    q = DeleteQueue("fake-key")
+    q.add_uri("https://databus.dbpedia.org/acc/group")
+    q.add_uri("https://databus.dbpedia.org/acc/group")
+    assert len(q.queue) == 1
+
+
+def test_sorted_queue_deepest_first():
+    q = DeleteQueue("fake-key")
+    q.add_uri("https://databus.dbpedia.org/acc/group")
+    q.add_uri("https://databus.dbpedia.org/acc/group/artifact/2024.01.01")
+    q.add_uri("https://databus.dbpedia.org/acc/group/artifact")
+    assert q.sorted_queue() == [
+        "https://databus.dbpedia.org/acc/group/artifact/2024.01.01",
+        "https://databus.dbpedia.org/acc/group/artifact",
+        "https://databus.dbpedia.org/acc/group",
+    ]
+
+
+def test_path_depth_counts_segments():
+    assert DeleteQueue._path_depth("https://databus.dbpedia.org/acc/group") == 2
+    assert (
+        DeleteQueue._path_depth(
+            "https://databus.dbpedia.org/acc/group/artifact/2024.01.01"
+        )
+        == 4
+    )
+
+
+def test_path_depth_ignores_trailing_slash():
+    assert DeleteQueue._path_depth("https://databus.dbpedia.org/acc/group/") == 2
+
+
+def test_execute_deletes_deepest_first(monkeypatch):
+    calls = {}
+    marker = object()
+
+    def fake_delete_list(databusURIs, databus_key, force=False, manifest_context=None):
+        calls["uris"] = databusURIs
+        calls["key"] = databus_key
+        calls["force"] = force
+        calls["manifest_context"] = manifest_context
+        calls["count"] = calls.get("count", 0) + 1
+
+    monkeypatch.setattr(delete, "_delete_list", fake_delete_list)
+
+    q = DeleteQueue("fake-key", manifest_context=marker)
+    q.add_uris(
+        [
+            "https://databus.dbpedia.org/acc/group",
+            "https://databus.dbpedia.org/acc/group/artifact/2024.01.01",
+            "https://databus.dbpedia.org/acc/group/artifact",
+        ]
+    )
+    q.execute()
+
+    assert calls["uris"] == [
+        "https://databus.dbpedia.org/acc/group/artifact/2024.01.01",
+        "https://databus.dbpedia.org/acc/group/artifact",
+        "https://databus.dbpedia.org/acc/group",
+    ]
+    assert calls["key"] == "fake-key"
+    assert calls["force"] is True
+    assert calls["manifest_context"] is marker
+    assert calls.get("count", 0) == 1
+
+
+def test_confirm_y_returns_confirm(monkeypatch):
+    def fake_input(prompt):
+        return "y"
+
+    monkeypatch.setattr("builtins.input", fake_input)
+
+    assert _confirm_delete("https://databus.dbpedia.org/acc/group") == "confirm"
+
+
+def test_confirm_messy_yes_returns_confirm(monkeypatch):
+    def fake_input(prompt):
+        return " YES "
+
+    monkeypatch.setattr("builtins.input", fake_input)
+
+    assert _confirm_delete("https://databus.dbpedia.org/acc/group") == "confirm"
+
+
+def test_confirm_s_returns_skip(monkeypatch):
+    def fake_input(prompt):
+        return "s"
+
+    monkeypatch.setattr("builtins.input", fake_input)
+
+    assert _confirm_delete("https://databus.dbpedia.org/acc/group") == "skip"
+
+
+def test_confirm_c_returns_cancel(monkeypatch):
+    def fake_input(prompt):
+        return "c"
+
+    monkeypatch.setattr("builtins.input", fake_input)
+
+    assert _confirm_delete("https://databus.dbpedia.org/acc/group") == "cancel"
+
+
+def test_confirm_invalid_then_valid_asks_again(monkeypatch):
+    answers = ["maybe", "s"]
+
+    def fake_input(prompt):
+        return answers.pop(0)
+
+    monkeypatch.setattr("builtins.input", fake_input)
+
+    assert _confirm_delete("https://databus.dbpedia.org/acc/group") == "skip"
+    assert answers == []
+
+
+def test_confirm_skip_word_returns_skip(monkeypatch):
+    def fake_input(prompt):
+        return "skip"
+
+    monkeypatch.setattr("builtins.input", fake_input)
+
+    assert _confirm_delete("https://databus.dbpedia.org/acc/group") == "skip"
+
+
+def test_confirm_cancel_word_returns_cancel(monkeypatch):
+    def fake_input(prompt):
+        return "cancel"
+
+    monkeypatch.setattr("builtins.input", fake_input)
+
+    assert _confirm_delete("https://databus.dbpedia.org/acc/group") == "cancel"