Add an endpoint for pressing buttons

appium/webdriver/webdriver.py

@@ -717,6 +717,20 @@ def long_press_keycode(self, keycode, metastate=None, flags=None):
         self.execute(Command.LONG_PRESS_KEYCODE, data)
         return self
 
+    def press_button(self, button_name):
+        """Sends a physical button name to the device to simulate the user pressing. iOS only.
+        Possible button names can be found in
+        https://github.com/appium/WebDriverAgent/blob/master/WebDriverAgentLib/Categories/XCUIDevice%2BFBHelpers.h
+
+        :Args:
+         - button_name - the button name to be sent to the device
+        """
+        data = {
+            'name': button_name
+        }
+        self.execute_script('mobile: pressButton', data)
+        return self
+
     @property
     def current_activity(self):
         """Retrieves the current activity running on the device.

test/functional/ios/appium_tests.py

@@ -146,6 +146,14 @@ def test_clear(self):
         text = self.driver.find_element_by_accessibility_id('Normal').get_attribute('value')
         self.assertEqual(text, def_text)
 
+    def test_press_button(self):
+        self.driver.press_button("Home")
+        if float(desired_capabilities.get_desired_capabilities(
+                desired_capabilities.BUNDLE_ID)['platformVersion']) < 11:
+            return
+        self.assertEqual(self.driver.query_app_state(desired_capabilities.BUNDLE_ID),
+                         ApplicationState.RUNNING_IN_FOREGROUND)
+
 
 if __name__ == "__main__":
     suite = unittest.TestLoader().loadTestsFromTestCase(AppiumTests)