Difference between revisions of "GUI Testing/Framework"
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Revision as of 08:59, 7 November 2006
The framework should facilitate retrieval of widgets and sending of events to a known GUI. This can be used to create a GUI test by hand.
Since it is not yet clear how to do the replay of an event sequence, the framework should use an abstraction layer to later change the way this is handled. The first implementation will consist of the simplest way where the executing test is compiled and run together with the application.
In order to find widgets by name, widgets first need to have a name. Vision2 has to be extended accordingly by adding a name feature to the widgets. Proposed as follows:
class EV_IDENTIFIABLE feature parent: EV_IDENTIFIABLE -- Parent of object, if any name: STRING -- Name of the widget -- If no specific name is set, the class type will be returned. ensure result_not_void: Result /= Void result_not_empty: not Result.is_empty full_path: STRING -- Full name of widget by prepending names of parent widgets -- Uses '.' as a separator. ensure result_not_void: Result /= Void result_correct: parent = Void implies Result.is_equal (name) result_correct: parent /= Void implies Result.is_equal (parent.name + "." + name) set_name (a_name: STRING) -- Set `name' to `a_name'. require name_not_void: name /= Void name_not_empty: not name.is_empty no_period_in_name: not a_name.has ('.') no_special_regexp_characters_in_name: -- TODO ensure name_set: name = a_name
This will become an ancestor of EV_CONTAINABLE.
To find widgets when having their name the container class can be extended by searching functionality:
class EV_IDENTIFIABLE_LOOKUP feature find_first_widget_by_name (a_name: STRING): EV_WIDGET -- Find a widget in container with `a_name'. -- If no widget is found, Void is returned. find_first_widget_by_name_recursive (a_name: STRING): EV_WIDGET -- Find a widget in container with `a_name' and search recursive. -- Recursive search is a breadth-first. -- If no widget is found, Void is returned. find_first_widget_by_path (a_path: STRING): EV_WIDGET -- Find a widget which corresponds to `a_path'. -- The path will be split on periods and looked up accordingly. find_all_widgets_by_name (a_name: STRING): LIST [EV_WIDGET] -- TODO -- If no widget is found, an empty list is returned. find_all_widgets_by_name_recursive (a_name: STRING): LIST [EV_WIDGET] -- TODO -- If no widget is found, an empty list is returned. find_all_widgets_by_path (a_path: STRING): LIST [EV_WIDGET] -- TODO -- If no widget is found, an empty list is returned.
All strings can be regular expressions and will be matched accordingly.
wel and gtk
Since the framework covers the replay part whose implementation is not yet defined, it should use an abstraction layer so tests can easily be adapted if necessary.
- Launch the application
- If test and AUT are separate this needs to invoke a program by name
- If test and AUT are compiled together, this needs to instantiate the original root class and call its creation feature. Threads could make a problem since the normal Vision2 application uses the thread for the event loop. So the test either has to create a thread for its actions or somehow be called from the Vision2 event loop.
- Get a widget
- By name or path in the whole application
- this includes searching for windows and dialogs
- By name or path in a specific widget
- this includes searching in a specific window or dialog
- By class
- By name or path and class
- Maybe: By specifying other attributes
- A search for icon, size, position, activation status or other attributes can be imagined
- Maybe: By specifying a prototype
- A widget is created and the attributes like size and icon are set. Then a widget with these properties is searched for.
- By name or path in the whole application
- Get a list of widgets
- (Same as above but always return all widgets which conform to the query)
- Get current focus
- Get menu (easy access on menubar)
- Invoke event
- On the whole application
- mouse events with coordinates relative to application
- keyboard commands issued on current focus
- On specific widget
- mouse events with coordinates relative to widget
- keyboard commands issued on specific widget (maybe focus should change automatically to better simulate behaviour)
- On the whole application
- Keyboard events
- Issue a list of keyboard events by string (no need to issue every single key stroke)
- Implement a way of describing which modifers are pressed
- Mouse events
- Mode where some events can be infered
- When two mouse clicks happen on different coordinates, the framework can issue mouse movement events between the positions to better simulate the user behaviour. This can be made as an option which can be activated or deactivated.
The class text of a single test should look similar to:
class Test inherit VISION2_TEST create make feature application_root: APPLICATION_ROOT_CLASS -- Root class of application under test make is -- Execute test. do -- launch application in a separate thread launch_application_threaded -- get EV_APPLICATION object set_ev_application (application_root) -- Just for illustration. Default values should alredy be 'good' mouse.set_click_delay (100) keyboard.set_typing_delay (50) -- run test procedure surrounded by rescue clause safe_run (agent run_test) end launch_application is -- Launch application under test. do create application_root.make wait (1000) end run_test is -- Run test case. local widget: EV_WIDGET do widget := gui.widget_by_name ("my widget") mouse.left_click_on (widget) keyboard.type ("some text") keyboard.press (keys.Enter) -- close application mouse.left_click_menu ("File.Exit") -- other way to close application keyboard.press_modified (modifiers.Control, keys.Enter) end
Helper class for mouse events. Dragging support still needs to be included.
class MOUSE feature -- Button clicking click (button, click_count, x, y) -- Generic click. Used by other features. click_on (button, click_count, widget) -- Generic click. Used by other features. left_click_on_position (x, y) right_click_on_position (x, y) middle_click_on_position (x, y) left_click_on (widget) right_click_on (widget) middle_click_on (widget) left_multi_click_on_position (x, y, click_count) right_multi_click_on_position (x, y, click_count) middle_multi_click_on_position (x, y, click_count) left_multi_click_on (widget, click_count) right_multi_click_on (widget, click_count) middle_multi_click_on (widget, click_count) feature -- Button pressing button_down (button, x, y) -- Generic button down. Used by other features. button_up (button, x, y) -- Generic button up. Used by other features. left_button_down_on_position (x, y) ... left_button_down_on_widget (widget) ... left_button_up_on_position (x, y) ... left_button_up_on_widget (widget) ... feature -- Moving move_to_position (x, y) move_to (widget) feature -- Scrolling scroll_up scroll_down
Helper class for keyboard input.
class KEYBOARD feature type (string) type_modified (modifiers, string) type_into (widget, string) type_modified_into (widget, modifiers, string) press_key (key) release_key (key) press_modifier (modifier) release_modifier (modifier)
Helper class to retreive widgets. The features which retreive widgets will have contracts to always return a non-void result. This is because if you have a test case and specify to get a widget with a certain name it has to be there or else the test case will fail. The error should be presented nicely so the test case can be adapted at the erroneous position. It would be good if in the case of an unknown widget the whole GUI is searched for the name to supply some suggestions as to how correct the test case.
class GUI feature widget_by_name (name): EV_WIDGET widgets_by_name (name): LIST [EV_WIDGET] ... (see Vision2 changes above - the same features will be present here)
Helper class for test case.
class VISION2_TEST feature ev_application: EV_APPLICATION -- Application under test set_ev_application (an_app) -- Set `ev_application' to `an_app'. gui: GUI -- Helper class to access Vision2 widgets mouse: MOUSE -- Mouse interface keyboard: KEYBOARD -- Keyboard interface keys: KEYS -- Helper class to keys enumeration modifiers: MODIFIERS -- Helper class to keyboard modifiers buttons: BUTTONS -- Helper class to mouse buttons enumeration