Refactor dumpsys accessibility in an artifact

tests/android/test_artifact.py

@@ -0,0 +1,20 @@
+# Mobile Verification Toolkit (MVT)
+# Copyright (c) 2021-2023 Claudio Guarnieri.
+# Use of this software is governed by the MVT License 1.1 that can be found at
+#   https://license.mvt.re/1.1/
+from mvt.android.artifacts.artifact import AndroidArtifact
+
+from ..utils import get_artifact
+
+
+class TestAndroidArtifact:
+    def test_extract_dumpsys_section(self):
+        file = get_artifact("androidqf/dumpsys.txt")
+        with open(file) as f:
+            data = f.read()
+
+        section = AndroidArtifact.extract_dumpsys_section(
+            data, "DUMP OF SERVICE package:"
+        )
+        assert isinstance(section, str)
+        assert len(section) == 3907