fix(uf2): Ignore ESPBAUD, ESPPORT when calling idf.py uf2[-app]

tools/test_idf_py/test_idf_py.py

@@ -360,5 +360,62 @@ class TestFileArgumentExpansion(TestCase):
         self.assertIn('(expansion of @args_non_existent) could not be opened', cm.exception.output.decode('utf-8', 'ignore'))
 
 
+class TestWrapperCommands(TestCase):
+    @classmethod
+    def setUpClass(cls):
+        cls.sample_project_dir = os.path.join(current_dir, '..', 'test_build_system', 'build_test_app')
+        os.chdir(cls.sample_project_dir)
+        super().setUpClass()
+
+    def call_command(self, command: List[str]) -> str:
+        try:
+            output = subprocess.check_output(
+                command,
+                env=os.environ,
+                stderr=subprocess.STDOUT).decode('utf-8', 'ignore')
+            return output
+        except subprocess.CalledProcessError as e:
+            self.fail(f'Process should have exited normally, but it exited with a return code of {e.returncode}')
+
+    @classmethod
+    def tearDownClass(cls):
+        subprocess.run([sys.executable, idf_py_path, 'fullclean'], stdout=subprocess.DEVNULL)
+        os.chdir(current_dir)
+        super().tearDownClass()
+
+
+class TestUF2Commands(TestWrapperCommands):
+    """
+    Test if uf2 commands are invoked as expected.
+    This test is not testing the functionality of mkuf2.py/idf.py uf2, but the invocation of the command from idf.py.
+    """
+
+    def test_uf2(self):
+        uf2_command = [sys.executable, idf_py_path, 'uf2']
+        output = self.call_command(uf2_command)
+        self.assertIn('Executing:', output)
+
+    def test_uf2_with_envvars(self):
+        # Values do not really matter, they should not be used.
+        os.environ['ESPBAUD'] = '115200'
+        os.environ['ESPPORT'] = '/dev/ttyUSB0'
+        self.test_uf2()
+        os.environ.pop('ESPBAUD')
+        os.environ.pop('ESPPORT')
+
+    def test_uf2_app(self):
+        uf2_app_command = [sys.executable, idf_py_path, 'uf2-app']
+        output = self.call_command(uf2_app_command)
+        self.assertIn('Executing:', output)
+
+    def test_uf2_app_with_envvars(self):
+        # Values do not really matter, they should not be used.
+        os.environ['ESPBAUD'] = '115200'
+        os.environ['ESPPORT'] = '/dev/ttyUSB0'
+        self.test_uf2_app()
+        os.environ.pop('ESPBAUD')
+        os.environ.pop('ESPPORT')
+
+
 if __name__ == '__main__':
     main()