Move backends functionality into separate modules

- Move backend management/executor code into module backend_core
- Create separate module for each backend in "backend" module
- Move each backend into corresponding module
- Split Vela wrapper into several submodules

Change-Id: If01b6774aab6501951212541cc5d7f5aa7c97e95

1 files changed, 50 insertions, 0 deletions

diff --git a/tests/test_backend_tosa_checker_install.py b/tests/test_backend_tosa_checker_install.py
new file mode 100644
index 0000000..0393f0b
--- /dev/null
+++ b/tests/test_backend_tosa_checker_install.py
@@ -0,0 +1,50 @@
+# SPDX-FileCopyrightText: Copyright 2022, Arm Limited and/or its affiliates.
+# SPDX-License-Identifier: Apache-2.0
+"""Tests for python package based installations."""
+from pathlib import Path
+from unittest.mock import MagicMock
+
+import pytest
+
+from mlia.backend.install import DownloadAndInstall
+from mlia.backend.install import InstallFromPath
+from mlia.backend.install import PyPackageBackendInstallation
+from mlia.backend.tosa_checker.install import get_tosa_backend_installation
+
+
+def test_get_tosa_backend_installation(
+    tmp_path: Path, monkeypatch: pytest.MonkeyPatch
+) -> None:
+    """Test function get_tosa_backend_installation."""
+    mock_package_manager = MagicMock()
+    monkeypatch.setattr(
+        "mlia.backend.install.get_package_manager",
+        lambda: mock_package_manager,
+    )
+
+    tosa_installation = get_tosa_backend_installation()
+
+    assert isinstance(tosa_installation, PyPackageBackendInstallation)
+    assert tosa_installation.name == "tosa-checker"
+    assert (
+        tosa_installation.description
+        == "Tool to check if a ML model is compatible with the TOSA specification"
+    )
+    assert tosa_installation.could_be_installed
+    assert tosa_installation.supports(DownloadAndInstall())
+    assert not tosa_installation.supports(InstallFromPath(tmp_path))
+
+    mock_package_manager.packages_installed.return_value = True
+    assert tosa_installation.already_installed
+    mock_package_manager.packages_installed.assert_called_once_with(["tosa-checker"])
+
+    with pytest.raises(Exception, match=r"Unsupported installation type.*"):
+        tosa_installation.install(InstallFromPath(tmp_path))
+
+    mock_package_manager.install.assert_not_called()
+
+    tosa_installation.install(DownloadAndInstall())
+    mock_package_manager.install.assert_called_once_with(["mlia[tosa]"])
+
+    tosa_installation.uninstall()
+    mock_package_manager.uninstall.assert_called_once_with(["tosa-checker"])