tests: custom_tools: added

Simple testing of the custom tool integration.

Signed-off-by: Jordan Yates <jordan@embeint.com>

Author: JordanYates

scripts/custom_tools/custom_tool.py

@@ -0,0 +1,25 @@
+#!/usr/bin/env python3
+
+"""Example out-of-tree tool"""
+
+__author__ = "Jordan Yates"
+__copyright__ = "Copyright 2025, Embeint Inc"
+
+from infuse_iot.commands import InfuseCommand
+
+
+class SubCommand(InfuseCommand):
+    NAME = "custom_tool"
+    HELP = "Test out-of-tree tool"
+    DESCRIPTION = "Test out-of-tree tool"
+
+    @classmethod
+    def add_parser(cls, parser):
+        parser.add_argument("--echo", "-e", required=True, type=str)
+
+    def __init__(self, args):
+        self.echo_string = args.echo
+
+    def run(self):
+        print("Echoing provided string:")
+        print(self.echo_string)

tests/test_custom_tools.py

@@ -0,0 +1,36 @@
+#!/usr/bin/env python3
+
+import os
+import pathlib
+import subprocess
+
+import pytest
+
+import infuse_iot.credentials as cred
+
+assert "TOXTEMPDIR" in os.environ, "you must run these tests using tox"
+
+
+def test_custom_tool_integration():
+    # Validate custom tool integration
+    echo_string = "test_string"
+
+    try:
+        cred.delete_custom_tool_path()
+    except Exception as _:
+        pass
+
+    with pytest.raises(subprocess.CalledProcessError):
+        subprocess.check_output(["infuse", "custom_tool", "--echo", echo_string])
+
+    custom_tools_path = pathlib.Path(__file__).parent.parent / 'scripts' / 'custom_tools'
+
+    subprocess.check_output(["infuse", "credentials", "--custom-tools", str(custom_tools_path)])
+
+    output = subprocess.check_output(["infuse", "custom_tool", "--echo", echo_string]).decode()
+    assert echo_string in output
+
+    cred.delete_custom_tool_path()
+
+    with pytest.raises(subprocess.CalledProcessError):
+        subprocess.check_output(["infuse", "custom_tool", "--echo", echo_string])