tests: skip extensions cli test shouldn't call process file either

all other tests in this file assert on `process_file` being called
with correct arguments. We need specific tests which test that the
configuration is interpreted correctly

tests/test_cli.py

@@ -1,5 +1,5 @@
 from pathlib import Path
-from typing import Iterable, List, Optional, Type
+from typing import Iterable, List, Optional, Tuple, Type
 from unittest import mock
 
 import pytest
@@ -13,6 +13,7 @@
 from unblob.processing import (
     DEFAULT_DEPTH,
     DEFAULT_PROCESS_NUM,
+    DEFAULT_SKIP_EXTENSION,
     DEFAULT_SKIP_MAGIC,
     ExtractionConfig,
 )
@@ -310,16 +311,16 @@ def test_keep_extracted_chunks(
 
 
 @pytest.mark.parametrize(
-    "skip_extension, extracted_files_count",
+    "skip_extension, expected_skip_extensions",
     [
-        pytest.param([], 5, id="skip-extension-empty"),
-        pytest.param([""], 5, id="skip-zip-extension-empty-suffix"),
-        pytest.param([".zip"], 0, id="skip-extension-zip"),
-        pytest.param([".rlib"], 5, id="skip-extension-rlib"),
+        pytest.param((), DEFAULT_SKIP_EXTENSION, id="skip-extension-empty"),
+        pytest.param(("",), ("",), id="skip-zip-extension-empty-suffix"),
+        pytest.param((".zip",), (".zip",), id="skip-extension-zip"),
+        pytest.param((".rlib",), (".rlib",), id="skip-extension-rlib"),
     ],
 )
 def test_skip_extension(
-    skip_extension: List[str], extracted_files_count: int, tmp_path: Path
+    skip_extension: List[str], expected_skip_extensions: Tuple[str, ...], tmp_path: Path
 ):
     runner = CliRunner()
     in_path = (
@@ -335,8 +336,12 @@ def test_skip_extension(
     for suffix in skip_extension:
         args += ["--skip-extension", suffix]
     params = [*args, "--extract-dir", str(tmp_path), str(in_path)]
-    result = runner.invoke(unblob.cli.cli, params)
-    assert extracted_files_count == len(list(tmp_path.rglob("*")))
+    process_file_mock = mock.MagicMock()
+    with mock.patch.object(unblob.cli, "process_file", process_file_mock):
+        result = runner.invoke(unblob.cli.cli, params)
+    assert (
+        process_file_mock.call_args.args[0].skip_extension == expected_skip_extensions
+    )
     assert result.exit_code == 0