def test_lone_keyup_sends_no_events(session, key_reporter, key_chain):
    key_chain.key_up("a").perform()
    assert len(get_keys(key_reporter)) == 0
    assert len(get_events(session)) == 0
    session.actions.release()
    assert len(get_keys(key_reporter)) == 0
    assert len(get_events(session)) == 0

def test_release_control_click(session, key_reporter, key_chain, mouse_chain):
    # The context menu stays visible during subsequent tests so let's not
    # display it in the first place.
    session.execute_script("""
        var keyReporter = document.getElementById("keys");
        document.addEventListener("contextmenu", function(e) {
          e.preventDefault();
        });
    """)
    key_chain \
        .pause(0) \
        .key_down(Keys.CONTROL)
    mouse_chain \
        .pointer_move(0, 0, origin=key_reporter) \
        .pointer_down()
    session.actions.perform([key_chain.dict, mouse_chain.dict])
    session.execute_script("""
        var keyReporter = document.getElementById("keys");
        keyReporter.addEventListener("mousedown", recordPointerEvent);
        keyReporter.addEventListener("mouseup", recordPointerEvent);
        resetEvents();
    """)
    session.actions.release()
    expected = [
        {"type": "mouseup"},
        {"type": "keyup"},
    ]
    events = [filter_dict(e, expected[0]) for e in get_events(session)]
    assert events == expected

def test_click_at_coordinates(session, test_actions_page, mouse_chain):
    div_point = {
        "x": 82,
        "y": 187,
    }
    mouse_chain \
        .pointer_move(div_point["x"], div_point["y"], duration=1000) \
        .click() \
        .perform()
    events = get_events(session)
    assert len(events) == 4
    for e in events:
        if e["type"] != "mousemove":
            assert e["pageX"] == div_point["x"]
            assert e["pageY"] == div_point["y"]
            assert e["target"] == "outer"
        if e["type"] != "mousedown":
            assert e["buttons"] == 0
        assert e["button"] == 0
    expected = [
        {"type": "mousedown", "buttons": 1},
        {"type": "mouseup",  "buttons": 0},
        {"type": "click", "buttons": 0},
    ]
    filtered_events = [filter_dict(e, expected[0]) for e in events]
    assert expected == filtered_events[1:]

def test_modifier_click(mod_click_session,
                       key_chain,
                       mouse_chain,
                       modifier,
                       prop):
    key_chain \
        .pause(200) \
        .key_down(modifier) \
        .pause(200) \
        .key_up(modifier)
    outer = mod_click_session.find.css("#outer", all=False)
    mouse_chain.click(element=outer)
    mod_click_session.actions.perform([key_chain.dict, mouse_chain.dict])
    expected = [
        {"type": "mousemove"},
        {"type": "mousedown"},
        {"type": "mouseup"},
        {"type": "click"},
    ]
    defaults = {
        "altKey": False,
        "metaKey": False,
        "shiftKey": False,
        "ctrlKey": False
    }
    for e in expected:
        e.update(defaults)
        if e["type"] != "mousemove":
            e[prop] = True
    filtered_events = [filter_dict(e, expected[0]) for e in get_events(mod_click_session)]
    assert expected == filtered_events

def test_single_nonprintable_key_sends_events(session,
                                              key_reporter,
                                              key_chain,
                                              value,
                                              code,
                                              key):
    key_chain \
        .key_down(value) \
        .key_up(value) \
        .perform()
    expected = [
        {"code": code, "key": key, "type": "keydown"},
        {"code": code, "key": key, "type": "keypress"},
        {"code": code, "key": key, "type": "keyup"},
    ]
    all_events = get_events(session)
    events = [filter_dict(e, expected[0]) for e in all_events]
    if len(events) > 0 and events[0]["code"] == None:
        # Remove 'code' entry if browser doesn't support it
        expected = [filter_dict(e, {"key": "", "type": ""}) for e in expected]
        events = [filter_dict(e, expected[0]) for e in events]
    if len(events) == 2:
        # most browsers don't send a keypress for non-printable keys
        assert events == [expected[0], expected[2]]
    else:
        assert events == expected
    assert len(get_keys(key_reporter)) == 0

def test_dblclick_at_coordinates(dblclick_session, mouse_chain, click_pause):
    div_point = {
        "x": 82,
        "y": 187,
    }
    mouse_chain \
        .pointer_move(div_point["x"], div_point["y"]) \
        .click() \
        .pause(click_pause) \
        .click() \
        .perform()
    events = get_events(dblclick_session)
    assert_move_to_coordinates(div_point, "outer", events)
    expected = [
        {"type": "mousedown", "button": 0},
        {"type": "mouseup", "button": 0},
        {"type": "click", "button": 0},
        {"type": "mousedown", "button": 0},
        {"type": "mouseup", "button": 0},
        {"type": "click", "button": 0},
        {"type": "dblclick", "button": 0},
    ]
    assert len(events) == 8
    filtered_events = [filter_dict(e, expected[0]) for e in events]
    assert expected == filtered_events[1:]

def test_webdriver_special_key_sends_keydown(session,
                                             key_reporter,
                                             key_chain,
                                             name,
                                             expected):
    if name.startswith("F"):
        # Prevent default behavior for F1, etc., but only after keydown
        # bubbles up to body. (Otherwise activated browser menus/functions
        # may interfere with subsequent tests.)
        session.execute_script("""
            document.body.addEventListener("keydown",
                    (e) => e.preventDefault());
        """)
    key_chain.key_down(getattr(Keys, name)).perform()
    # only interested in keydown
    first_event = get_events(session)[0]
    # make a copy so we can throw out irrelevant keys and compare to events
    expected = dict(expected)

    del expected["value"]
    # check and remove keys that aren't in expected
    assert first_event["type"] == "keydown"
    assert first_event["repeat"] == False
    first_event = filter_dict(first_event, expected)
    assert first_event == expected
    # only printable characters should be recorded in input field
    entered_keys = get_keys(key_reporter)
    if len(expected["key"]) == 1:
        assert entered_keys == expected["key"]
    else:
        assert len(entered_keys) == 0

def test_drag_and_drop(session,
                       test_actions_page,
                       mouse_chain,
                       dx,
                       dy,
                       drag_duration):
    drag_target = session.find.css("#dragTarget", all=False)
    initial_rect = drag_target.rect
    initial_center = get_inview_center(initial_rect, get_viewport_rect(session))
    # Conclude chain with extra move to allow time for last queued
    # coordinate-update of drag_target and to test that drag_target is "dropped".
    mouse_chain \
        .pointer_move(0, 0, origin=drag_target) \
        .pointer_down() \
        .pointer_move(dx, dy, duration=drag_duration, origin="pointer") \
        .pointer_up() \
        .pointer_move(80, 50, duration=100, origin="pointer") \
        .perform()
    # mouseup that ends the drag is at the expected destination
    e = get_events(session)[1]
    assert e["type"] == "mouseup"
    assert pytest.approx(e["pageX"], initial_center["x"] + dx)
    assert pytest.approx(e["pageY"], initial_center["y"] + dy)
    # check resulting location of the dragged element
    final_rect = drag_target.rect
    assert initial_rect["x"] + dx == final_rect["x"]
    assert initial_rect["y"] + dy == final_rect["y"]

def test_click_element_center(session, test_actions_page, mouse_chain):
    outer = session.find.css("#outer", all=False)
    center = get_inview_center(outer.rect, get_viewport_rect(session))
    mouse_chain.click(element=outer).perform()
    events = get_events(session)
    assert len(events) == 4
    event_types = [e["type"] for e in events]
    assert ["mousemove", "mousedown", "mouseup", "click"] == event_types
    for e in events:
        if e["type"] != "mousemove":
            assert pytest.approx(e["pageX"], center["x"])
            assert pytest.approx(e["pageY"], center["y"])
            assert e["target"] == "outer"

def test_sequence_of_keydown_character_keys(session, key_reporter, key_chain):
    key_chain.send_keys("ef").perform()
    expected = [
        {"code": "KeyE", "key": "e", "type": "keydown"},
        {"code": "KeyE", "key": "e", "type": "keypress"},
        {"code": "KeyE", "key": "e", "type": "keyup"},
        {"code": "KeyF", "key": "f", "type": "keydown"},
        {"code": "KeyF", "key": "f", "type": "keypress"},
        {"code": "KeyF", "key": "f", "type": "keyup"},
    ]
    events = [filter_dict(e, expected[0]) for e in get_events(session)]
    assert events == expected
    assert get_keys(key_reporter) == "ef"

def test_sequence_of_keydown_printable_keys_sends_events(session,
                                                         key_reporter,
                                                         key_chain):
    key_chain \
        .key_down("a") \
        .key_down("b") \
        .perform()
    expected = [
        {"code": "KeyA", "key": "a", "type": "keydown"},
        {"code": "KeyA", "key": "a", "type": "keypress"},
        {"code": "KeyB", "key": "b", "type": "keydown"},
        {"code": "KeyB", "key": "b", "type": "keypress"},
    ]
    events = [filter_dict(e, expected[0]) for e in get_events(session)]
    assert events == expected
    assert get_keys(key_reporter) == "ab"

def test_release_char_sequence_sends_keyup_events_in_reverse(session,
                                                             key_reporter,
                                                             key_chain):
    key_chain \
        .key_down("a") \
        .key_down("b") \
        .perform()
    # reset so we only see the release events
    session.execute_script("resetEvents();")
    session.actions.release()
    expected = [
        {"code": "KeyB", "key": "b", "type": "keyup"},
        {"code": "KeyA", "key": "a", "type": "keyup"},
    ]
    events = [filter_dict(e, expected[0]) for e in get_events(session)]
    assert events == expected

def test_single_printable_key_sends_correct_events(session,
                                                   key_reporter,
                                                   key_chain,
                                                   value,
                                                   code):
    key_chain \
        .key_down(value) \
        .key_up(value) \
        .perform()
    expected = [
        {"code": code, "key": value, "type": "keydown"},
        {"code": code, "key": value, "type": "keypress"},
        {"code": code, "key": value, "type": "keyup"},
    ]
    events = [filter_dict(e, expected[0]) for e in get_events(session)]
    assert events == expected
    assert get_keys(key_reporter) == value

def test_single_modifier_key_sends_correct_events(session,
                                                  key_reporter,
                                                  key_chain,
                                                  value,
                                                  code,
                                                  key):
    key_chain \
        .key_down(value) \
        .key_up(value) \
        .perform()
    all_events = get_events(session)
    expected = [
        {"code": code, "key": key, "type": "keydown"},
        {"code": code, "key": key, "type": "keyup"},
    ]
    events = [filter_dict(e, expected[0]) for e in all_events]
    assert events == expected
    assert len(get_keys(key_reporter)) == 0

def test_sequence_of_keydown_character_keys(session, key_reporter, key_chain):
    key_chain.send_keys("ef").perform()
    expected = [
        {"code": "KeyE", "key": "e", "type": "keydown"},
        {"code": "KeyE", "key": "e", "type": "keypress"},
        {"code": "KeyE", "key": "e", "type": "keyup"},
        {"code": "KeyF", "key": "f", "type": "keydown"},
        {"code": "KeyF", "key": "f", "type": "keypress"},
        {"code": "KeyF", "key": "f", "type": "keyup"},
    ]
    all_events = get_events(session)
    events = [filter_dict(e, expected[0]) for e in all_events]
    if len(events) > 0 and events[0]["code"] == None:
        # Remove 'code' entry if browser doesn't support it
        expected = [filter_dict(e, {"key": "", "type": ""}) for e in expected]
        events = [filter_dict(e, expected[0]) for e in events]
    assert events == expected
    assert get_keys(key_reporter) == "ef"

def test_no_dblclick(dblclick_session, mouse_chain):
        outer = dblclick_session.find.css("#outer", all=False)
        center = get_center(outer.rect)
        mouse_chain \
            .pointer_move(int(center["x"]), int(center["y"])) \
            .click() \
            .pause(_DBLCLICK_INTERVAL + 10) \
            .click() \
            .perform()
        events = get_events(dblclick_session)
        expected = [
            {"type": "mousedown", "button": 0},
            {"type": "mouseup", "button": 0},
            {"type": "click", "button": 0},
            {"type": "mousedown", "button": 0},
            {"type": "mouseup", "button": 0},
            {"type": "click", "button": 0},
        ]
        assert len(events) == 7
        filtered_events = [filter_dict(e, expected[0]) for e in events]
        assert expected == filtered_events[1:]

def test_sequence_of_keydown_printable_keys_sends_events(session,
                                                         key_reporter,
                                                         key_chain):
    key_chain \
        .key_down("a") \
        .key_down("b") \
        .perform()
    expected = [
        {"code": "KeyA", "key": "a", "type": "keydown"},
        {"code": "KeyA", "key": "a", "type": "keypress"},
        {"code": "KeyB", "key": "b", "type": "keydown"},
        {"code": "KeyB", "key": "b", "type": "keypress"},
    ]
    all_events = get_events(session)
    events = [filter_dict(e, expected[0]) for e in all_events]
    if len(events) > 0 and events[0]["code"] == None:
        # Remove 'code' entry if browser doesn't support it
        expected = [filter_dict(e, {"key": "", "type": ""}) for e in expected]
        events = [filter_dict(e, expected[0]) for e in events]
    assert events == expected
    assert get_keys(key_reporter) == "ab"

def test_release_char_sequence_sends_keyup_events_in_reverse(session,
                                                             key_reporter,
                                                             key_chain):
    key_chain \
        .key_down("a") \
        .key_down("b") \
        .perform()
    # reset so we only see the release events
    session.execute_script("resetEvents();")
    session.actions.release()
    expected = [
        {"code": "KeyB", "key": "b", "type": "keyup"},
        {"code": "KeyA", "key": "a", "type": "keyup"},
    ]
    all_events = get_events(session)
    events = [filter_dict(e, expected[0]) for e in all_events]
    if len(events) > 0 and events[0]["code"] == None:
        # Remove 'code' entry if browser doesn't support it
        expected = [filter_dict(e, {"key": "", "type": ""}) for e in expected]
        events = [filter_dict(e, expected[0]) for e in events]
    assert events == expected

def test_many_modifiers_click(session, test_actions_page, key_chain, mouse_chain):
    outer = session.find.css("#outer", all=False)
    key_chain \
        .pause(0) \
        .key_down(Keys.CONTROL) \
        .key_down(Keys.SHIFT) \
        .pause(0) \
        .key_up(Keys.CONTROL) \
        .key_up(Keys.SHIFT)
    mouse_chain \
        .pointer_move(0, 0, origin=outer) \
        .pause(0) \
        .pointer_down() \
        .pointer_up() \
        .pause(0) \
        .pause(0) \
        .pointer_down()
    session.actions.perform([key_chain.dict, mouse_chain.dict])
    expected = [
        {"type": "mousemove"},
        # shift and ctrl presses
        {"type": "mousedown"},
        {"type": "mouseup"},
        {"type": "click"},
        # no modifiers pressed
        {"type": "mousedown"},
    ]
    defaults = {
        "altKey": False,
        "metaKey": False,
        "shiftKey": False,
        "ctrlKey": False
    }
    for e in expected:
        e.update(defaults)
    for e in expected[1:4]:
        e["shiftKey"] = True
        e["ctrlKey"] = True
    events = [filter_dict(e, expected[0]) for e in get_events(session)]
    assert events == expected

def test_single_nonprintable_key_sends_events(session,
                                              key_reporter,
                                              key_chain,
                                              value,
                                              code,
                                              key):
    key_chain \
        .key_down(value) \
        .key_up(value) \
        .perform()
    expected = [
        {"code": code, "key": key, "type": "keydown"},
        {"code": code, "key": key, "type": "keypress"},
        {"code": code, "key": key, "type": "keyup"},
    ]
    events = [filter_dict(e, expected[0]) for e in get_events(session)]
    if len(events) == 2:
        # most browsers don't send a keypress for non-printable keys
        assert events == [expected[0], expected[2]]
    else:
        assert events == expected
    assert len(get_keys(key_reporter)) == 0