add BlockKey test

asdf-format · Apr 11, 2023 · e36a4d0 · e36a4d0
1 parent 199ed6e
commit e36a4d0
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/asdf/_tests/test_util.py b/asdf/_tests/test_util.py
@@ -117,3 +117,14 @@ def test_minversion():
 
     assert util.minversion(yaml, "3.1")
     assert util.minversion("yaml", "3.1")
+
+
+def test_block_key():
+    bk = util.BlockKey()
+    # make sure block key is hashable and can serve as a dictionary key
+    hash(bk)
+    d = {bk: 1}
+    # a new key should produce a different hash than the first
+    bk2 = util.BlockKey()
+    d[bk2] = 2
+    assert len(d) == 2