much better tests and add page ui

tests/test_cli_extract.py

@@ -0,0 +1,66 @@
+#!/usr/bin/env python3
+"""
+Tests for archivebox extract command.
+Verify extract re-runs extractors on existing snapshots.
+"""
+
+import os
+import subprocess
+import sqlite3
+
+from .fixtures import *
+
+
+def test_extract_runs_on_existing_snapshots(tmp_path, process, disable_extractors_dict):
+    """Test that extract command runs on existing snapshots."""
+    os.chdir(tmp_path)
+
+    # Add a snapshot first
+    subprocess.run(
+        ['archivebox', 'add', '--index-only', '--depth=0', 'https://example.com'],
+        capture_output=True,
+        env=disable_extractors_dict,
+    )
+
+    # Run extract
+    result = subprocess.run(
+        ['archivebox', 'extract', '--overwrite'],
+        capture_output=True,
+        env=disable_extractors_dict,
+        timeout=30,
+    )
+
+    # Should complete
+    assert result.returncode in [0, 1]
+
+
+def test_extract_preserves_snapshot_count(tmp_path, process, disable_extractors_dict):
+    """Test that extract doesn't change snapshot count."""
+    os.chdir(tmp_path)
+
+    # Add snapshot
+    subprocess.run(
+        ['archivebox', 'add', '--index-only', '--depth=0', 'https://example.com'],
+        capture_output=True,
+        env=disable_extractors_dict,
+    )
+
+    conn = sqlite3.connect("index.sqlite3")
+    c = conn.cursor()
+    count_before = c.execute("SELECT COUNT(*) FROM core_snapshot").fetchone()[0]
+    conn.close()
+
+    # Run extract
+    subprocess.run(
+        ['archivebox', 'extract', '--overwrite'],
+        capture_output=True,
+        env=disable_extractors_dict,
+        timeout=30,
+    )
+
+    conn = sqlite3.connect("index.sqlite3")
+    c = conn.cursor()
+    count_after = c.execute("SELECT COUNT(*) FROM core_snapshot").fetchone()[0]
+    conn.close()
+
+    assert count_after == count_before