vinjai commented on code in PR #941:
URL: https://github.com/apache/iceberg-python/pull/941#discussion_r1855301400


##########
tests/table/test_init.py:
##########
@@ -982,28 +982,43 @@ def test_assert_table_uuid(table_v2: Table) -> None:
 
 def test_assert_ref_snapshot_id(table_v2: Table) -> None:
     base_metadata = table_v2.metadata
-    AssertRefSnapshotId(ref="main", 
snapshot_id=base_metadata.current_snapshot_id).validate(base_metadata)
+    AssertRefSnapshotId(ref="main", 
snapshot_id=base_metadata.current_snapshot_id, 
ref_type=SnapshotRefType.BRANCH).validate(
+        base_metadata
+    )
 
     with pytest.raises(CommitFailedException, match="Requirement failed: 
current table metadata is missing"):
-        AssertRefSnapshotId(ref="main", snapshot_id=1).validate(None)
+        AssertRefSnapshotId(ref="main", snapshot_id=1, 
ref_type=SnapshotRefType.BRANCH).validate(None)
 
     with pytest.raises(
         CommitFailedException,
         match="Requirement failed: branch main was created concurrently",
     ):
-        AssertRefSnapshotId(ref="main", 
snapshot_id=None).validate(base_metadata)
+        AssertRefSnapshotId(ref="main", snapshot_id=None, 
ref_type=SnapshotRefType.BRANCH).validate(base_metadata)
 
     with pytest.raises(
         CommitFailedException,
         match="Requirement failed: branch main has changed: expected id 1, 
found 3055729675574597004",
     ):
-        AssertRefSnapshotId(ref="main", snapshot_id=1).validate(base_metadata)
+        AssertRefSnapshotId(ref="main", snapshot_id=1, 
ref_type=SnapshotRefType.BRANCH).validate(base_metadata)
+
+    with pytest.raises(
+        CommitFailedException,
+        match="Requirement failed: branch or tag not_exist_branch is missing, 
expected 1",
+    ):
+        AssertRefSnapshotId(ref="not_exist_branch", snapshot_id=1, 
ref_type=SnapshotRefType.BRANCH).validate(base_metadata)
+
+    with pytest.raises(
+        CommitFailedException,
+        match="Requirement failed: branch or tag not_exist_tag is missing, 
expected 1",
+    ):
+        AssertRefSnapshotId(ref="not_exist_tag", snapshot_id=1, 
ref_type=SnapshotRefType.TAG).validate(base_metadata)
 
+    # existing Tag in metadata: test

Review Comment:
   The test below would fail anyway if the tag doesn't already exist.
   Since, the exception raised would differ from the one expected in 
`pytest.raises`.
   
   Adding another assert statement does not add any meaningful value.
   
   What are your thoughts?



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