MLIA-460 Revisit backend management

- Provide command for backend installation in case
  if backend is not available
- Fix issue with connection timeout during downloading
- Show installation tools output only in verbose mode

Change-Id: Ic0e495ba19879cc2cda4fd0bce20b57ba896cfeb

1 files changed, 29 insertions, 0 deletions

diff --git a/tests/test_cli_main.py b/tests/test_cli_main.py
index 5f6beb6..925f1e4 100644
--- a/tests/test_cli_main.py
+++ b/tests/test_cli_main.py
@@ -15,10 +15,12 @@ from unittest.mock import MagicMock
 import pytest
 
 import mlia
+from mlia.backend.errors import BackendUnavailableError
 from mlia.cli.main import backend_main
 from mlia.cli.main import CommandInfo
 from mlia.cli.main import main
 from mlia.core.context import ExecutionContext
+from mlia.core.errors import InternalError
 from tests.utils.logging import clear_loggers
 
 
@@ -358,6 +360,33 @@ def test_commands_execution_backend_main(
             MagicMock(side_effect=KeyboardInterrupt()),
             ["Execution has been interrupted"],
         ],
+        [
+            False,
+            MagicMock(
+                side_effect=BackendUnavailableError(
+                    "Backend sample is not available", "sample"
+                )
+            ),
+            ["Error: Backend sample is not available."],
+        ],
+        [
+            False,
+            MagicMock(
+                side_effect=BackendUnavailableError(
+                    "Backend tosa-checker is not available", "tosa-checker"
+                )
+            ),
+            [
+                "Error: Backend tosa-checker is not available.",
+                "Please use next command to install it: "
+                'mlia-backend install "tosa-checker"',
+            ],
+        ],
+        [
+            False,
+            MagicMock(side_effect=InternalError("Unknown error")),
+            ["Internal error: Unknown error"],
+        ],
     ],
 )
 def test_verbose_output(