test_validate.py

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# pylint:disable=redefined-outer-name,eval-used
from typing import cast
from unittest.mock import patch

from pyiceberg.io import FileIO
from pyiceberg.manifest import ManifestContent, ManifestFile
from pyiceberg.table import Table
from pyiceberg.table.snapshots import Operation, Snapshot
from pyiceberg.table.update.validate import validation_history


def test_validation_history(table_v2_with_extensive_snapshots: Table) -> None:
    """Test the validation history function."""
    mock_manifests = {}

    for i, snapshot in enumerate(table_v2_with_extensive_snapshots.snapshots()):
        mock_manifest = ManifestFile(
            manifest_path=f"foo/bar/{i}",
            manifest_length=1,
            partition_spec_id=1,
            content=ManifestContent.DATA if i % 2 == 0 else ManifestContent.DELETES,
            sequence_number=1,
            min_sequence_number=1,
            added_snapshot_id=snapshot.snapshot_id,
        )

        # Store the manifest for this specific snapshot
        mock_manifests[snapshot.snapshot_id] = [mock_manifest]

    expected_manifest_data_counts = len([m for m in mock_manifests.values() if m[0].content == ManifestContent.DATA]) - 1

    oldest_snapshot = table_v2_with_extensive_snapshots.snapshots()[0]
    newest_snapshot = cast(Snapshot, table_v2_with_extensive_snapshots.current_snapshot())

    def mock_read_manifest_side_effect(self: Snapshot, io: FileIO) -> list[ManifestFile]:
        """Mock the manifests method to use the snapshot_id for lookup."""
        snapshot_id = self.snapshot_id
        if snapshot_id in mock_manifests:
            return mock_manifests[snapshot_id]
        return []

    with patch("pyiceberg.table.snapshots.Snapshot.manifests", new=mock_read_manifest_side_effect):
        manifests, snapshots = validation_history(
            table_v2_with_extensive_snapshots,
            newest_snapshot,
            oldest_snapshot,
            {Operation.APPEND},
            ManifestContent.DATA,
        )

        assert len(manifests) == expected_manifest_data_counts