tests: covers sha verification function (#8767)

tests/vcs/git/test_backend.py

@@ -0,0 +1,26 @@
+from __future__ import annotations
+
+from poetry.vcs.git.backend import is_revision_sha
+
+
+VALID_SHA = "c5c7624ef64f34d9f50c3b7e8118f7f652fddbbd"
+
+
+def test_invalid_revision_sha() -> None:
+    result = is_revision_sha("invalid_input")
+    assert result is False
+
+
+def test_valid_revision_sha() -> None:
+    result = is_revision_sha(VALID_SHA)
+    assert result is True
+
+
+def test_invalid_revision_sha_min_len() -> None:
+    result = is_revision_sha("c5c7")
+    assert result is False
+
+
+def test_invalid_revision_sha_max_len() -> None:
+    result = is_revision_sha(VALID_SHA + "42")
+    assert result is False