Cover "list", "search" and "settings" commands with tests

tests/commands/test_search.py

@@ -0,0 +1,33 @@
+# Copyright (C) Ivan Kravets <me@ikravets.com>
+# See LICENSE for details.
+
+import json
+
+
+from click.testing import CliRunner
+
+from platformio.commands.search import cli
+
+runner = CliRunner()
+
+
+def validate_output(result):
+    assert result.exit_code == 0
+    assert not result.exception
+    assert "error" not in result.output.lower()
+
+
+def test_search_json_output():
+    result = runner.invoke(cli, ["arduino", "--json-output"])
+    validate_output(result)
+    search_result = json.loads(result.output)
+    assert isinstance(search_result, list)
+    assert len(search_result)
+    platforms = [item['name'] for item in search_result]
+    assert "atmelsam" in platforms
+
+
+def test_search_raw_output():
+    result = runner.invoke(cli, ["arduino"])
+    validate_output(result)
+    assert "digistump" in result.output