Add tests for CPE match database producer

tests/cpe_match/producer/mock_worker.py

@@ -0,0 +1,44 @@
+# SPDX-FileCopyrightText: 2025 Greenbone AG
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+from typing import Sequence
+
+from pontos.nvd.models.cpe_match_string import CPEMatchString
+from rich.console import Console
+from rich.progress import Progress
+
+from greenbone.scap.generic_cli.worker.base import BaseScapWorker
+
+
+class CpeMatchMockWorker(BaseScapWorker[CPEMatchString]):
+
+    def __init__(
+        self,
+        console: Console,
+        error_console: Console,
+        progress: Progress,
+        *,
+        verbose: int | None = None,
+    ):
+        super().__init__(
+            console=console,
+            error_console=error_console,
+            progress=progress,
+            verbose=verbose,
+        )
+        self.context_entered: bool = False
+        self.context_exited: bool = False
+        self.items_received: list[CPEMatchString] = []
+        self.item_count = 0
+        self.chunk_count = 0
+
+    async def _handle_chunk(self, chunk: Sequence[CPEMatchString]) -> None:
+        self.items_received.extend(chunk)
+        self.item_count += len(chunk)
+        self.chunk_count += 1
+
+    async def __aenter__(self):
+        self.context_entered = True
+
+    async def __aexit__(self, __exc_type, __exc_value, __traceback):
+        self.context_exited = True