Added tests for arduino#1669

Author: cmaglie

Diff for: test/test_board.py

@@ -14,6 +14,8 @@
 # a commercial license, send an email to [email protected].
 from pathlib import Path
 from git import Repo
+import os
+import glob
 import simplejson as json
 import semver
 import pytest
@@ -405,6 +407,23 @@ def test_board_list(run_command):
         assert "protocol_label" in port["port"]
 
 
+def test_board_list_with_invalid_discovery(run_command, data_dir):
+    run_command(["core", "update-index"])
+    result = run_command(["board", "list"])
+    assert result.ok
+
+    # check that the CLI do no crash if an invalid discovery is installed
+    # (for example if the installation fails midway).
+    # https://github.com/arduino/arduino-cli/issues/1669
+    tool_dir = os.path.join(data_dir, "packages", "builtin", "tools", "serial-discovery")
+    for file_to_delete in glob.glob(tool_dir + "/*/*"):
+        os.remove(file_to_delete)
+
+    result = run_command(["board", "list"])
+    assert result.ok
+    assert "builtin:serial-discovery" in result.stderr
+
+
 def test_board_listall(run_command):
     assert run_command(["update"])
     assert run_command(["core", "install", "arduino:[email protected]"])