From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001
From: "Matt A. Tobin" <mattatobin@localhost.localdomain>
Date: Fri, 2 Feb 2018 04:16:08 -0500
Subject: Add m-esr52 at 52.6.0

---
 layout/base/tests/marionette/manifest.ini          |   5 +
 .../marionette/test_accessiblecaret_cursor_mode.py | 298 ++++++++++
 .../test_accessiblecaret_selection_mode.py         | 632 +++++++++++++++++++++
 3 files changed, 935 insertions(+)
 create mode 100644 layout/base/tests/marionette/manifest.ini
 create mode 100644 layout/base/tests/marionette/test_accessiblecaret_cursor_mode.py
 create mode 100644 layout/base/tests/marionette/test_accessiblecaret_selection_mode.py

(limited to 'layout/base/tests/marionette')

diff --git a/layout/base/tests/marionette/manifest.ini b/layout/base/tests/marionette/manifest.ini
new file mode 100644
index 000000000..98428ccf5
--- /dev/null
+++ b/layout/base/tests/marionette/manifest.ini
@@ -0,0 +1,5 @@
+[DEFAULT]
+run-if = buildapp == 'browser'
+
+[test_accessiblecaret_cursor_mode.py]
+[test_accessiblecaret_selection_mode.py]
diff --git a/layout/base/tests/marionette/test_accessiblecaret_cursor_mode.py b/layout/base/tests/marionette/test_accessiblecaret_cursor_mode.py
new file mode 100644
index 000000000..e330e4d70
--- /dev/null
+++ b/layout/base/tests/marionette/test_accessiblecaret_cursor_mode.py
@@ -0,0 +1,298 @@
+# -*- coding: utf-8 -*-
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+import string
+
+from marionette_driver.by import By
+from marionette_driver.marionette import Actions
+from marionette_driver.selection import SelectionManager
+from marionette_harness.marionette_test import (
+    MarionetteTestCase,
+    parameterized,
+)
+
+
+class AccessibleCaretCursorModeTestCase(MarionetteTestCase):
+    '''Test cases for AccessibleCaret under cursor mode.
+
+    We call the blinking cursor (nsCaret) as cursor, and call AccessibleCaret as
+    caret for short.
+
+    '''
+    # Element IDs.
+    _input_id = 'input'
+    _input_padding_id = 'input-padding'
+    _textarea_id = 'textarea'
+    _textarea_one_line_id = 'textarea-one-line'
+    _contenteditable_id = 'contenteditable'
+
+    # Test html files.
+    _cursor_html = 'test_carets_cursor.html'
+
+    def setUp(self):
+        # Code to execute before every test is running.
+        super(AccessibleCaretCursorModeTestCase, self).setUp()
+        self.caret_tested_pref = 'layout.accessiblecaret.enabled'
+        self.caret_timeout_ms_pref = 'layout.accessiblecaret.timeout_ms'
+        self.hide_carets_for_mouse = 'layout.accessiblecaret.hide_carets_for_mouse_input'
+        self.prefs = {
+            self.caret_tested_pref: True,
+            self.caret_timeout_ms_pref: 0,
+            self.hide_carets_for_mouse: False,
+        }
+        self.marionette.set_prefs(self.prefs)
+        self.actions = Actions(self.marionette)
+
+    def open_test_html(self, test_html):
+        self.marionette.navigate(self.marionette.absolute_url(test_html))
+
+    @parameterized(_input_id, el_id=_input_id)
+    @parameterized(_textarea_id, el_id=_textarea_id)
+    @parameterized(_contenteditable_id, el_id=_contenteditable_id)
+    def test_move_cursor_to_the_right_by_one_character(self, el_id):
+        self.open_test_html(self._cursor_html)
+        el = self.marionette.find_element(By.ID, el_id)
+        sel = SelectionManager(el)
+        content_to_add = '!'
+        target_content = sel.content
+        target_content = target_content[:1] + content_to_add + target_content[1:]
+
+        # Get first caret (x, y) at position 1 and 2.
+        el.tap()
+        sel.move_cursor_to_front()
+        cursor0_x, cursor0_y = sel.cursor_location()
+        first_caret0_x, first_caret0_y = sel.first_caret_location()
+        sel.move_cursor_by_offset(1)
+        first_caret1_x, first_caret1_y = sel.first_caret_location()
+
+        # Tap the front of the input to make first caret appear.
+        el.tap(cursor0_x, cursor0_y)
+
+        # Move first caret.
+        self.actions.flick(el, first_caret0_x, first_caret0_y,
+                           first_caret1_x, first_caret1_y).perform()
+
+        self.actions.key_down(content_to_add).key_up(content_to_add).perform()
+        self.assertEqual(target_content, sel.content)
+
+    @parameterized(_input_id, el_id=_input_id)
+    @parameterized(_textarea_id, el_id=_textarea_id)
+    @parameterized(_contenteditable_id, el_id=_contenteditable_id)
+    def test_move_cursor_to_end_by_dragging_caret_to_bottom_right_corner(self, el_id):
+        self.open_test_html(self._cursor_html)
+        el = self.marionette.find_element(By.ID, el_id)
+        sel = SelectionManager(el)
+        content_to_add = '!'
+        target_content = sel.content + content_to_add
+
+        # Tap the front of the input to make first caret appear.
+        el.tap()
+        sel.move_cursor_to_front()
+        el.tap(*sel.cursor_location())
+
+        # Move first caret to the bottom-right corner of the element.
+        src_x, src_y = sel.first_caret_location()
+        dest_x, dest_y = el.size['width'], el.size['height']
+        self.actions.flick(el, src_x, src_y, dest_x, dest_y).perform()
+
+        self.actions.key_down(content_to_add).key_up(content_to_add).perform()
+        self.assertEqual(target_content, sel.content)
+
+    @parameterized(_input_id, el_id=_input_id)
+    @parameterized(_textarea_id, el_id=_textarea_id)
+    @parameterized(_contenteditable_id, el_id=_contenteditable_id)
+    def test_move_cursor_to_front_by_dragging_caret_to_front(self, el_id):
+        self.open_test_html(self._cursor_html)
+        el = self.marionette.find_element(By.ID, el_id)
+        sel = SelectionManager(el)
+        content_to_add = '!'
+        target_content = content_to_add + sel.content
+
+        # Get first caret location at the front.
+        el.tap()
+        sel.move_cursor_to_front()
+        dest_x, dest_y = sel.first_caret_location()
+
+        # Tap to make first caret appear. Note: it's strange that when the caret
+        # is at the end, the rect of the caret in <textarea> cannot be obtained.
+        # A bug perhaps.
+        el.tap()
+        sel.move_cursor_to_end()
+        sel.move_cursor_by_offset(1, backward=True)
+        el.tap(*sel.cursor_location())
+        src_x, src_y = sel.first_caret_location()
+
+        # Move first caret to the front of the input box.
+        self.actions.flick(el, src_x, src_y, dest_x, dest_y).perform()
+
+        self.actions.key_down(content_to_add).key_up(content_to_add).perform()
+        self.assertEqual(target_content, sel.content)
+
+    @parameterized(_input_id, el_id=_input_id)
+    @parameterized(_textarea_id, el_id=_textarea_id)
+    @parameterized(_contenteditable_id, el_id=_contenteditable_id)
+    def test_dragging_caret_to_top_left_corner_after_timeout(self, el_id):
+        self.open_test_html(self._cursor_html)
+        el = self.marionette.find_element(By.ID, el_id)
+        sel = SelectionManager(el)
+        content_to_add = '!'
+        non_target_content = content_to_add + sel.content
+
+        # Set caret timeout to be 1 second.
+        timeout = 1
+        self.marionette.set_pref(self.caret_timeout_ms_pref, timeout * 1000)
+
+        # Set a 3x timeout margin to prevent intermittent test failures.
+        timeout *= 3
+
+        # Tap to make first caret appear. Note: it's strange that when the caret
+        # is at the end, the rect of the caret in <textarea> cannot be obtained.
+        # A bug perhaps.
+        el.tap()
+        sel.move_cursor_to_end()
+        sel.move_cursor_by_offset(1, backward=True)
+        el.tap(*sel.cursor_location())
+
+        # Wait until first caret disappears, then pretend to move it to the
+        # top-left corner of the input box.
+        src_x, src_y = sel.first_caret_location()
+        dest_x, dest_y = 0, 0
+        self.actions.wait(timeout).flick(el, src_x, src_y, dest_x, dest_y).perform()
+
+        self.actions.key_down(content_to_add).key_up(content_to_add).perform()
+        self.assertNotEqual(non_target_content, sel.content)
+
+    def test_caret_not_appear_when_typing_in_scrollable_content(self):
+        self.open_test_html(self._cursor_html)
+        el = self.marionette.find_element(By.ID, self._input_id)
+        sel = SelectionManager(el)
+        content_to_add = '!'
+        non_target_content = content_to_add + sel.content + string.ascii_letters
+
+        el.tap()
+        sel.move_cursor_to_end()
+
+        # Insert a long string to the end of the <input>, which triggers
+        # ScrollPositionChanged event.
+        el.send_keys(string.ascii_letters)
+
+        # The caret should not be visible. If it does appear wrongly due to the
+        # ScrollPositionChanged event, we can drag it to the front of the
+        # <input> to change the cursor position.
+        src_x, src_y = sel.first_caret_location()
+        dest_x, dest_y = 0, 0
+        self.actions.flick(el, src_x, src_y, dest_x, dest_y).perform()
+
+        # The content should not be inserted at the front of the <input>.
+        el.send_keys(content_to_add)
+
+        self.assertNotEqual(non_target_content, sel.content)
+
+    @parameterized(_input_id, el_id=_input_id)
+    @parameterized(_input_padding_id, el_id=_input_padding_id)
+    @parameterized(_textarea_one_line_id, el_id=_textarea_one_line_id)
+    @parameterized(_contenteditable_id, el_id=_contenteditable_id)
+    def test_caret_not_jump_when_dragging_to_editable_content_boundary(self, el_id):
+        self.open_test_html(self._cursor_html)
+        el = self.marionette.find_element(By.ID, el_id)
+        sel = SelectionManager(el)
+        content_to_add = '!'
+        non_target_content = sel.content + content_to_add
+
+        # Goal: the cursor position is not changed after dragging the caret down
+        # on the Y-axis.
+        el.tap()
+        sel.move_cursor_to_front()
+        el.tap(*sel.cursor_location())
+        x, y = sel.first_caret_location()
+
+        # Drag the caret down by 50px, and insert '!'.
+        self.actions.flick(el, x, y, x, y + 50).perform()
+        self.actions.key_down(content_to_add).key_up(content_to_add).perform()
+        self.assertNotEqual(non_target_content, sel.content)
+
+    @parameterized(_input_id, el_id=_input_id)
+    @parameterized(_input_padding_id, el_id=_input_padding_id)
+    @parameterized(_textarea_one_line_id, el_id=_textarea_one_line_id)
+    @parameterized(_contenteditable_id, el_id=_contenteditable_id)
+    def test_caret_not_jump_to_front_when_dragging_up_to_editable_content_boundary(self, el_id):
+        self.open_test_html(self._cursor_html)
+        el = self.marionette.find_element(By.ID, el_id)
+        sel = SelectionManager(el)
+        content_to_add = '!'
+        non_target_content = content_to_add + sel.content
+
+        # Goal: the cursor position is not changed after dragging the caret down
+        # on the Y-axis.
+        el.tap()
+        sel.move_cursor_to_end()
+        sel.move_cursor_by_offset(1, backward=True)
+        el.tap(*sel.cursor_location())
+        x, y = sel.first_caret_location()
+
+        # Drag the caret up by 50px, and insert '!'.
+        self.actions.flick(el, x, y, x, y - 50).perform()
+        self.actions.key_down(content_to_add).key_up(content_to_add).perform()
+        self.assertNotEqual(non_target_content, sel.content)
+
+    def test_drag_caret_from_front_to_end_across_columns(self):
+        self.open_test_html('test_carets_columns.html')
+        el = self.marionette.find_element(By.ID, 'columns-inner')
+        sel = SelectionManager(el)
+        content_to_add = '!'
+        target_content = sel.content + content_to_add
+
+        # Goal: the cursor position can be changed by dragging the caret from
+        # the front to the end of the content.
+
+        # Tap to make the cursor appear.
+        before_image_1 = self.marionette.find_element(By.ID, 'before-image-1')
+        before_image_1.tap()
+
+        # Tap the front of the content to make first caret appear.
+        sel.move_cursor_to_front()
+        el.tap(*sel.cursor_location())
+        src_x, src_y = sel.first_caret_location()
+        dest_x, dest_y = el.size['width'], el.size['height']
+
+        # Drag the first caret to the bottom-right corner of the element.
+        self.actions.flick(el, src_x, src_y, dest_x, dest_y).perform()
+
+        self.actions.key_down(content_to_add).key_up(content_to_add).perform()
+        self.assertEqual(target_content, sel.content)
+
+    def test_move_cursor_to_front_by_dragging_caret_to_front_br_element(self):
+        self.open_test_html(self._cursor_html)
+        el = self.marionette.find_element(By.ID, self._contenteditable_id)
+        sel = SelectionManager(el)
+        content_to_add_1 = '!'
+        content_to_add_2 = '\n\n'
+        target_content = content_to_add_1 + content_to_add_2 + sel.content
+
+        # Goal: the cursor position can be changed by dragging the caret from
+        # the end of the content to the front br element. Because we cannot get
+        # caret location if it's on a br element, we need to get the first caret
+        # location then adding the new lines.
+
+        # Get first caret location at the front.
+        el.tap()
+        sel.move_cursor_to_front()
+        dest_x, dest_y = sel.first_caret_location()
+
+        # Append new line to the front of the content.
+        el.send_keys(content_to_add_2);
+
+        # Tap to make first caret appear.
+        el.tap()
+        sel.move_cursor_to_end()
+        sel.move_cursor_by_offset(1, backward=True)
+        el.tap(*sel.cursor_location())
+        src_x, src_y = sel.first_caret_location()
+
+        # Move first caret to the front of the input box.
+        self.actions.flick(el, src_x, src_y, dest_x, dest_y).perform()
+
+        self.actions.key_down(content_to_add_1).key_up(content_to_add_1).perform()
+        self.assertEqual(target_content, sel.content)
diff --git a/layout/base/tests/marionette/test_accessiblecaret_selection_mode.py b/layout/base/tests/marionette/test_accessiblecaret_selection_mode.py
new file mode 100644
index 000000000..2cc93dd74
--- /dev/null
+++ b/layout/base/tests/marionette/test_accessiblecaret_selection_mode.py
@@ -0,0 +1,632 @@
+# -*- coding: utf-8 -*-
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+import re
+
+from marionette_driver.by import By
+from marionette_driver.marionette import Actions
+from marionette_driver.selection import SelectionManager
+from marionette_harness.marionette_test import (
+    MarionetteTestCase,
+    SkipTest,
+    parameterized
+)
+
+
+def skip_if_not_rotatable(target):
+    def wrapper(self, *args, **kwargs):
+        if not self.marionette.session_capabilities.get('rotatable'):
+            raise SkipTest('skipping due to device not rotatable')
+        return target(self, *args, **kwargs)
+    return wrapper
+
+
+class AccessibleCaretSelectionModeTestCase(MarionetteTestCase):
+    '''Test cases for AccessibleCaret under selection mode.'''
+    # Element IDs.
+    _input_id = 'input'
+    _input_padding_id = 'input-padding'
+    _textarea_id = 'textarea'
+    _textarea2_id = 'textarea2'
+    _textarea_one_line_id = 'textarea-one-line'
+    _textarea_rtl_id = 'textarea-rtl'
+    _contenteditable_id = 'contenteditable'
+    _contenteditable2_id = 'contenteditable2'
+    _content_id = 'content'
+    _content2_id = 'content2'
+    _non_selectable_id = 'non-selectable'
+
+    # Test html files.
+    _selection_html = 'test_carets_selection.html'
+    _multipleline_html = 'test_carets_multipleline.html'
+    _multiplerange_html = 'test_carets_multiplerange.html'
+    _longtext_html = 'test_carets_longtext.html'
+    _iframe_html = 'test_carets_iframe.html'
+    _display_none_html = 'test_carets_display_none.html'
+
+    def setUp(self):
+        # Code to execute before every test is running.
+        super(AccessibleCaretSelectionModeTestCase, self).setUp()
+        self.carets_tested_pref = 'layout.accessiblecaret.enabled'
+        self.prefs = {
+            'layout.word_select.eat_space_to_next_word': False,
+            self.carets_tested_pref: True,
+        }
+        self.marionette.set_prefs(self.prefs)
+        self.actions = Actions(self.marionette)
+
+    def open_test_html(self, test_html):
+        self.marionette.navigate(self.marionette.absolute_url(test_html))
+
+    def word_offset(self, text, ordinal):
+        'Get the character offset of the ordinal-th word in text.'
+        tokens = re.split(r'(\S+)', text)         # both words and spaces
+        spaces = tokens[0::2]                     # collect spaces at odd indices
+        words = tokens[1::2]                      # collect word at even indices
+
+        if ordinal >= len(words):
+            raise IndexError('Only %d words in text, but got ordinal %d' %
+                             (len(words), ordinal))
+
+        # Cursor position of the targeting word is behind the the first
+        # character in the word. For example, offset to 'def' in 'abc def' is
+        # between 'd' and 'e'.
+        offset = len(spaces[0]) + 1
+        offset += sum(len(words[i]) + len(spaces[i + 1]) for i in range(ordinal))
+        return offset
+
+    def test_word_offset(self):
+        text = ' ' * 3 + 'abc' + ' ' * 3 + 'def'
+
+        self.assertTrue(self.word_offset(text, 0), 4)
+        self.assertTrue(self.word_offset(text, 1), 10)
+        with self.assertRaises(IndexError):
+            self.word_offset(text, 2)
+
+    def word_location(self, el, ordinal):
+        '''Get the location (x, y) of the ordinal-th word in el.
+
+        The ordinal starts from 0.
+
+        Note: this function has a side effect which changes focus to the
+        target element el.
+
+        '''
+        sel = SelectionManager(el)
+        offset = self.word_offset(sel.content, ordinal)
+
+        # Move the blinking cursor to the word.
+        el.tap()
+        sel.move_cursor_to_front()
+        sel.move_cursor_by_offset(offset)
+        x, y = sel.cursor_location()
+
+        return x, y
+
+    def rect_relative_to_window(self, el):
+        '''Get element's bounding rectangle.
+
+        This function is similar to el.rect, but the coordinate is relative to
+        the top left corner of the window instead of the document.
+
+        '''
+        return self.marionette.execute_script('''
+            let rect = arguments[0].getBoundingClientRect();
+            return {x: rect.x, y:rect.y, width: rect.width, height: rect.height};
+            ''', script_args=[el])
+
+    def long_press_on_location(self, el, x=None, y=None):
+        '''Long press the location (x, y) to select a word.
+
+        If no (x, y) are given, it will be targeted at the center of the
+        element. On Windows, those spaces after the word will also be selected.
+        This function sends synthesized eMouseLongTap to gecko.
+
+        '''
+        rect = self.rect_relative_to_window(el)
+        target_x = rect['x'] + (x if x is not None else rect['width'] // 2)
+        target_y = rect['y'] + (y if y is not None else rect['height'] // 2)
+
+        self.marionette.execute_script('''
+            let Ci = Components.interfaces;
+            let utils = window.QueryInterface(Ci.nsIInterfaceRequestor)
+                              .getInterface(Ci.nsIDOMWindowUtils);
+            utils.sendTouchEventToWindow('touchstart', [0],
+                                         [arguments[0]], [arguments[1]],
+                                         [1], [1], [0], [1], 1, 0);
+            utils.sendMouseEventToWindow('mouselongtap', arguments[0], arguments[1],
+                                          0, 1, 0);
+            utils.sendTouchEventToWindow('touchend', [0],
+                                         [arguments[0]], [arguments[1]],
+                                         [1], [1], [0], [1], 1, 0);
+            ''', script_args=[target_x, target_y], sandbox='system')
+
+    def long_press_on_word(self, el, wordOrdinal):
+        x, y = self.word_location(el, wordOrdinal)
+        self.long_press_on_location(el, x, y)
+
+    def to_unix_line_ending(self, s):
+        """Changes all Windows/Mac line endings in s to UNIX line endings."""
+
+        return s.replace('\r\n', '\n').replace('\r', '\n')
+
+    @parameterized(_input_id, el_id=_input_id)
+    @parameterized(_textarea_id, el_id=_textarea_id)
+    @parameterized(_textarea_rtl_id, el_id=_textarea_rtl_id)
+    @parameterized(_contenteditable_id, el_id=_contenteditable_id)
+    @parameterized(_content_id, el_id=_content_id)
+    def test_long_press_to_select_a_word(self, el_id):
+        self.open_test_html(self._selection_html)
+        el = self.marionette.find_element(By.ID, el_id)
+        self._test_long_press_to_select_a_word(el)
+
+    def _test_long_press_to_select_a_word(self, el):
+        sel = SelectionManager(el)
+        original_content = sel.content
+        words = original_content.split()
+        self.assertTrue(len(words) >= 2, 'Expect at least two words in the content.')
+        target_content = words[0]
+
+        # Goal: Select the first word.
+        self.long_press_on_word(el, 0)
+
+        # Ignore extra spaces selected after the word.
+        self.assertEqual(target_content, sel.selected_content)
+
+    @parameterized(_input_id, el_id=_input_id)
+    @parameterized(_textarea_id, el_id=_textarea_id)
+    @parameterized(_textarea_rtl_id, el_id=_textarea_rtl_id)
+    @parameterized(_contenteditable_id, el_id=_contenteditable_id)
+    @parameterized(_content_id, el_id=_content_id)
+    def test_drag_carets(self, el_id):
+        self.open_test_html(self._selection_html)
+        el = self.marionette.find_element(By.ID, el_id)
+        sel = SelectionManager(el)
+        original_content = sel.content
+        words = original_content.split()
+        self.assertTrue(len(words) >= 1, 'Expect at least one word in the content.')
+
+        # Goal: Select all text after the first word.
+        target_content = original_content[len(words[0]):]
+
+        # Get the location of the carets at the end of the content for later
+        # use.
+        el.tap()
+        sel.select_all()
+        end_caret_x, end_caret_y = sel.second_caret_location()
+
+        self.long_press_on_word(el, 0)
+
+        # Drag the second caret to the end of the content.
+        (caret1_x, caret1_y), (caret2_x, caret2_y) = sel.carets_location()
+        self.actions.flick(el, caret2_x, caret2_y, end_caret_x, end_caret_y).perform()
+
+        # Drag the first caret to the previous position of the second caret.
+        self.actions.flick(el, caret1_x, caret1_y, caret2_x, caret2_y).perform()
+
+        self.assertEqual(target_content, sel.selected_content)
+
+    @parameterized(_input_id, el_id=_input_id)
+    @parameterized(_textarea_id, el_id=_textarea_id)
+    @parameterized(_textarea_rtl_id, el_id=_textarea_rtl_id)
+    @parameterized(_contenteditable_id, el_id=_contenteditable_id)
+    @parameterized(_content_id, el_id=_content_id)
+    def test_drag_swappable_carets(self, el_id):
+        self.open_test_html(self._selection_html)
+        el = self.marionette.find_element(By.ID, el_id)
+        sel = SelectionManager(el)
+        original_content = sel.content
+        words = original_content.split()
+        self.assertTrue(len(words) >= 1, 'Expect at least one word in the content.')
+
+        target_content1 = words[0]
+        target_content2 = original_content[len(words[0]):]
+
+        # Get the location of the carets at the end of the content for later
+        # use.
+        el.tap()
+        sel.select_all()
+        end_caret_x, end_caret_y = sel.second_caret_location()
+
+        self.long_press_on_word(el, 0)
+
+        # Drag the first caret to the end and back to where it was
+        # immediately. The selection range should not be collapsed.
+        caret1_x, caret1_y = sel.first_caret_location()
+        self.actions.flick(el, caret1_x, caret1_y, end_caret_x, end_caret_y)\
+                    .flick(el, end_caret_x, end_caret_y, caret1_x, caret1_y).perform()
+        self.assertEqual(target_content1, sel.selected_content)
+
+        # Drag the first caret to the end.
+        caret1_x, caret1_y = sel.first_caret_location()
+        self.actions.flick(el, caret1_x, caret1_y, end_caret_x, end_caret_y).perform()
+        self.assertEqual(target_content2, sel.selected_content)
+
+    @parameterized(_input_id, el_id=_input_id)
+    @parameterized(_textarea_id, el_id=_textarea_id)
+    @parameterized(_textarea_rtl_id, el_id=_textarea_rtl_id)
+    @parameterized(_contenteditable_id, el_id=_contenteditable_id)
+    @parameterized(_content_id, el_id=_content_id)
+    def test_minimum_select_one_character(self, el_id):
+        self.open_test_html(self._selection_html)
+        el = self.marionette.find_element(By.ID, el_id)
+        self._test_minimum_select_one_character(el)
+
+    @parameterized(_textarea2_id, el_id=_textarea2_id)
+    @parameterized(_contenteditable2_id, el_id=_contenteditable2_id)
+    @parameterized(_content2_id, el_id=_content2_id)
+    def test_minimum_select_one_character2(self, el_id):
+        self.open_test_html(self._multipleline_html)
+        el = self.marionette.find_element(By.ID, el_id)
+        self._test_minimum_select_one_character(el)
+
+    def _test_minimum_select_one_character(self, el, x=None, y=None):
+        sel = SelectionManager(el)
+        original_content = sel.content
+        words = original_content.split()
+        self.assertTrue(len(words) >= 1, 'Expect at least one word in the content.')
+
+        # Get the location of the carets at the end of the content for later
+        # use.
+        sel.select_all()
+        end_caret_x, end_caret_y = sel.second_caret_location()
+        el.tap()
+
+        # Goal: Select the first character.
+        target_content = original_content[0]
+
+        if x and y:
+            # If we got x and y from the arguments, use it as a hint of the
+            # location of the first word
+            pass
+        else:
+            x, y = self.word_location(el, 0)
+        self.long_press_on_location(el, x, y)
+
+        # Drag the second caret to the end of the content.
+        (caret1_x, caret1_y), (caret2_x, caret2_y) = sel.carets_location()
+        self.actions.flick(el, caret2_x, caret2_y, end_caret_x, end_caret_y).perform()
+
+        # Drag the second caret to the position of the first caret.
+        (caret1_x, caret1_y), (caret2_x, caret2_y) = sel.carets_location()
+        self.actions.flick(el, caret2_x, caret2_y, caret1_x, caret1_y).perform()
+
+        self.assertEqual(target_content, sel.selected_content)
+
+    @parameterized(_input_id + '_to_' + _textarea_id,
+                   el1_id=_input_id, el2_id=_textarea_id)
+    @parameterized(_input_id + '_to_' + _contenteditable_id,
+                   el1_id=_input_id, el2_id=_contenteditable_id)
+    @parameterized(_input_id + '_to_' + _content_id,
+                   el1_id=_input_id, el2_id=_content_id)
+    @parameterized(_textarea_id + '_to_' + _input_id,
+                   el1_id=_textarea_id, el2_id=_input_id)
+    @parameterized(_textarea_id + '_to_' + _contenteditable_id,
+                   el1_id=_textarea_id, el2_id=_contenteditable_id)
+    @parameterized(_textarea_id + '_to_' + _content_id,
+                   el1_id=_textarea_id, el2_id=_content_id)
+    @parameterized(_contenteditable_id + '_to_' + _input_id,
+                   el1_id=_contenteditable_id, el2_id=_input_id)
+    @parameterized(_contenteditable_id + '_to_' + _textarea_id,
+                   el1_id=_contenteditable_id, el2_id=_textarea_id)
+    @parameterized(_contenteditable_id + '_to_' + _content_id,
+                   el1_id=_contenteditable_id, el2_id=_content_id)
+    @parameterized(_content_id + '_to_' + _input_id,
+                   el1_id=_content_id, el2_id=_input_id)
+    @parameterized(_content_id + '_to_' + _textarea_id,
+                   el1_id=_content_id, el2_id=_textarea_id)
+    @parameterized(_content_id + '_to_' + _contenteditable_id,
+                   el1_id=_content_id, el2_id=_contenteditable_id)
+    def test_long_press_changes_focus_from(self, el1_id, el2_id):
+        '''Test the focus could be changed from el1 to el2 by long press.
+
+        If the focus is changed to e2 successfully, the carets should appear and
+        could be dragged.
+
+        '''
+        # Goal: Tap to focus el1, and then select the first character on
+        # el2.
+
+        # We want to collect the location of the first word in el2 here
+        # since self.word_location() has the side effect which would
+        # change the focus.
+        self.open_test_html(self._selection_html)
+        el1 = self.marionette.find_element(By.ID, el1_id)
+        el2 = self.marionette.find_element(By.ID, el2_id)
+        x, y = self.word_location(el2, 0)
+        el1.tap()
+        self._test_minimum_select_one_character(el2, x=x, y=y)
+
+    @parameterized(_input_id, el_id=_input_id)
+    @parameterized(_textarea_id, el_id=_textarea_id)
+    @parameterized(_textarea_rtl_id, el_id=_textarea_rtl_id)
+    @parameterized(_contenteditable_id, el_id=_contenteditable_id)
+    def test_focus_not_changed_by_long_press_on_non_selectable(self, el_id):
+        self.open_test_html(self._selection_html)
+        el = self.marionette.find_element(By.ID, el_id)
+        non_selectable = self.marionette.find_element(By.ID, self._non_selectable_id)
+
+        # Goal: Focus remains on the editable element el after long pressing on
+        # the non-selectable element.
+        sel = SelectionManager(el)
+        self.long_press_on_word(el, 0)
+        self.long_press_on_location(non_selectable)
+        active_sel = SelectionManager(self.marionette.get_active_element())
+        self.assertEqual(sel.content, active_sel.content)
+
+    @parameterized(_input_id, el_id=_input_id)
+    @parameterized(_textarea_id, el_id=_textarea_id)
+    @parameterized(_textarea_rtl_id, el_id=_textarea_rtl_id)
+    @parameterized(_contenteditable_id, el_id=_contenteditable_id)
+    @parameterized(_content_id, el_id=_content_id)
+    def test_handle_tilt_when_carets_overlap_each_other(self, el_id):
+        '''Test tilt handling when carets overlap to each other.
+
+        Let the two carets overlap each other. If they are set to tilted
+        successfully, tapping the tilted carets should not cause the selection
+        to be collapsed and the carets should be draggable.
+
+        '''
+        self.open_test_html(self._selection_html)
+        el = self.marionette.find_element(By.ID, el_id)
+        sel = SelectionManager(el)
+        original_content = sel.content
+        words = original_content.split()
+        self.assertTrue(len(words) >= 1, 'Expect at least one word in the content.')
+
+        # Goal: Select the first word.
+        self.long_press_on_word(el, 0)
+        target_content = sel.selected_content
+
+        # Drag the first caret to the position of the second caret to trigger
+        # carets overlapping.
+        (caret1_x, caret1_y), (caret2_x, caret2_y) = sel.carets_location()
+        self.actions.flick(el, caret1_x, caret1_y, caret2_x, caret2_y).perform()
+
+        # We make two hit tests targeting the left edge of the left tilted caret
+        # and the right edge of the right tilted caret. If either of the hits is
+        # missed, selection would be collapsed and both carets should not be
+        # draggable.
+        (caret3_x, caret3_y), (caret4_x, caret4_y) = sel.carets_location()
+
+        # The following values are from ua.css and all.js
+        caret_width = float(self.marionette.get_pref('layout.accessiblecaret.width'))
+        caret_margin_left = float(self.marionette.get_pref('layout.accessiblecaret.margin-left'))
+        tilt_right_margin_left = 0.41 * caret_width
+        tilt_left_margin_left = -0.39 * caret_width
+
+        left_caret_left_edge_x = caret3_x + caret_margin_left + tilt_left_margin_left
+        el.tap(left_caret_left_edge_x + 2, caret3_y)
+
+        right_caret_right_edge_x = (caret4_x + caret_margin_left +
+                                    tilt_right_margin_left + caret_width)
+        el.tap(right_caret_right_edge_x - 2, caret4_y)
+
+        # Drag the first caret back to the initial selection, the first word.
+        self.actions.flick(el, caret3_x, caret3_y, caret1_x, caret1_y).perform()
+
+        self.assertEqual(target_content, sel.selected_content)
+
+    def test_drag_caret_over_non_selectable_field(self):
+        '''Test dragging the caret over a non-selectable field.
+
+        The selected content should exclude non-selectable elements and the
+        second caret should appear in last range's position.
+
+        '''
+        self.open_test_html(self._multiplerange_html)
+        body = self.marionette.find_element(By.ID, 'bd')
+        sel3 = self.marionette.find_element(By.ID, 'sel3')
+        sel4 = self.marionette.find_element(By.ID, 'sel4')
+        sel6 = self.marionette.find_element(By.ID, 'sel6')
+
+        # Select target element and get target caret location
+        self.long_press_on_word(sel4, 3)
+        sel = SelectionManager(body)
+        end_caret_x, end_caret_y = sel.second_caret_location()
+
+        self.long_press_on_word(sel6, 0)
+        end_caret2_x, end_caret2_y = sel.second_caret_location()
+
+        # Select start element
+        self.long_press_on_word(sel3, 3)
+
+        # Drag end caret to target location
+        (caret1_x, caret1_y), (caret2_x, caret2_y) = sel.carets_location()
+        self.actions.flick(body, caret2_x, caret2_y, end_caret_x, end_caret_y, 1).perform()
+        self.assertEqual(self.to_unix_line_ending(sel.selected_content.strip()),
+                         'this 3\nuser can select this')
+
+        (caret1_x, caret1_y), (caret2_x, caret2_y) = sel.carets_location()
+        self.actions.flick(body, caret2_x, caret2_y, end_caret2_x, end_caret2_y, 1).perform()
+        self.assertEqual(self.to_unix_line_ending(sel.selected_content.strip()),
+                         'this 3\nuser can select this 4\nuser can select this 5\nuser')
+
+        # Drag first caret to target location
+        (caret1_x, caret1_y), (caret2_x, caret2_y) = sel.carets_location()
+        self.actions.flick(body, caret1_x, caret1_y, end_caret_x, end_caret_y, 1).perform()
+        self.assertEqual(self.to_unix_line_ending(sel.selected_content.strip()),
+                         '4\nuser can select this 5\nuser')
+
+    def test_drag_swappable_caret_over_non_selectable_field(self):
+        self.open_test_html(self._multiplerange_html)
+        body = self.marionette.find_element(By.ID, 'bd')
+        sel3 = self.marionette.find_element(By.ID, 'sel3')
+        sel4 = self.marionette.find_element(By.ID, 'sel4')
+        sel = SelectionManager(body)
+
+        self.long_press_on_word(sel4, 3)
+        (end_caret1_x, end_caret1_y), (end_caret2_x, end_caret2_y) = sel.carets_location()
+
+        self.long_press_on_word(sel3, 3)
+        (caret1_x, caret1_y), (caret2_x, caret2_y) = sel.carets_location()
+
+        # Drag the first caret down, which will across the second caret.
+        self.actions.flick(body, caret1_x, caret1_y, end_caret1_x, end_caret1_y).perform()
+        self.assertEqual(self.to_unix_line_ending(sel.selected_content.strip()),
+                         '3\nuser can select')
+
+        # The old second caret becomes the first caret. Drag it down again.
+        self.actions.flick(body, caret2_x, caret2_y, end_caret2_x, end_caret2_y).perform()
+        self.assertEqual(self.to_unix_line_ending(sel.selected_content.strip()),
+                         'this')
+
+    def test_drag_caret_to_beginning_of_a_line(self):
+        '''Bug 1094056
+        Test caret visibility when caret is dragged to beginning of a line
+        '''
+        self.open_test_html(self._multiplerange_html)
+        body = self.marionette.find_element(By.ID, 'bd')
+        sel1 = self.marionette.find_element(By.ID, 'sel1')
+        sel2 = self.marionette.find_element(By.ID, 'sel2')
+
+        # Select the first word in the second line
+        self.long_press_on_word(sel2, 0)
+        sel = SelectionManager(body)
+        (start_caret_x, start_caret_y), (end_caret_x, end_caret_y) = sel.carets_location()
+
+        # Select target word in the first line
+        self.long_press_on_word(sel1, 2)
+
+        # Drag end caret to the beginning of the second line
+        (caret1_x, caret1_y), (caret2_x, caret2_y) = sel.carets_location()
+        self.actions.flick(body, caret2_x, caret2_y, start_caret_x, start_caret_y).perform()
+
+        # Drag end caret back to the target word
+        self.actions.flick(body, start_caret_x, start_caret_y, caret2_x, caret2_y).perform()
+
+        self.assertEqual(self.to_unix_line_ending(sel.selected_content), 'select')
+
+    @skip_if_not_rotatable
+    def test_caret_position_after_changing_orientation_of_device(self):
+        '''Bug 1094072
+        If positions of carets are updated correctly, they should be draggable.
+        '''
+        self.open_test_html(self._longtext_html)
+        body = self.marionette.find_element(By.ID, 'bd')
+        longtext = self.marionette.find_element(By.ID, 'longtext')
+
+        # Select word in portrait mode, then change to landscape mode
+        self.marionette.set_orientation('portrait')
+        self.long_press_on_word(longtext, 12)
+        sel = SelectionManager(body)
+        (p_start_caret_x, p_start_caret_y), (p_end_caret_x, p_end_caret_y) = sel.carets_location()
+        self.marionette.set_orientation('landscape')
+        (l_start_caret_x, l_start_caret_y), (l_end_caret_x, l_end_caret_y) = sel.carets_location()
+
+        # Drag end caret to the start caret to change the selected content
+        self.actions.flick(body, l_end_caret_x, l_end_caret_y,
+                           l_start_caret_x, l_start_caret_y).perform()
+
+        # Change orientation back to portrait mode to prevent affecting
+        # other tests
+        self.marionette.set_orientation('portrait')
+
+        self.assertEqual(self.to_unix_line_ending(sel.selected_content), 'o')
+
+    def test_select_word_inside_an_iframe(self):
+        '''Bug 1088552
+        The scroll offset in iframe should be taken into consideration properly.
+        In this test, we scroll content in the iframe to the bottom to cause a
+        huge offset. If we use the right coordinate system, selection should
+        work. Otherwise, it would be hard to trigger select word.
+        '''
+        self.open_test_html(self._iframe_html)
+        iframe = self.marionette.find_element(By.ID, 'frame')
+
+        # switch to inner iframe and scroll to the bottom
+        self.marionette.switch_to_frame(iframe)
+        self.marionette.execute_script(
+            'document.getElementById("bd").scrollTop += 999')
+
+        # long press to select bottom text
+        body = self.marionette.find_element(By.ID, 'bd')
+        sel = SelectionManager(body)
+        self._bottomtext = self.marionette.find_element(By.ID, 'bottomtext')
+        self.long_press_on_location(self._bottomtext)
+
+        self.assertNotEqual(self.to_unix_line_ending(sel.selected_content), '')
+
+    def test_carets_initialized_in_display_none(self):
+        '''Test AccessibleCaretEventHub is properly initialized on a <html> with
+        display: none.
+
+        '''
+        self.open_test_html(self._display_none_html)
+        html = self.marionette.find_element(By.ID, 'html')
+        content = self.marionette.find_element(By.ID, 'content')
+
+        # Remove 'display: none' from <html>
+        self.marionette.execute_script(
+            'arguments[0].style.display = "unset";',
+            script_args=[html]
+        )
+
+        # If AccessibleCaretEventHub is initialized successfully, select a word
+        # should work.
+        self._test_long_press_to_select_a_word(content)
+
+    def test_long_press_to_select_when_partial_visible_word_is_selected(self):
+        self.open_test_html(self._selection_html)
+        el = self.marionette.find_element(By.ID, self._input_id)
+        sel = SelectionManager(el)
+
+        # To successfully select the second word while the first word is being
+        # selected, use sufficient spaces between 'a' and 'b' to avoid the
+        # second caret covers on the second word.
+        original_content = 'aaaaaaaa          bbbbbbbb'
+        el.clear()
+        el.send_keys(original_content)
+        words = original_content.split()
+
+        # We cannot use self.long_press_on_word() directly since it has will
+        # change the cursor position which affects this test. We have to store
+        # the position of word 0 and word 1 before long-pressing to select the
+        # word.
+        word0_x, word0_y = self.word_location(el, 0)
+        word1_x, word1_y = self.word_location(el, 1)
+
+        self.long_press_on_location(el, word0_x, word0_y)
+        self.assertEqual(words[0], sel.selected_content)
+
+        self.long_press_on_location(el, word1_x, word1_y)
+        self.assertEqual(words[1], sel.selected_content)
+
+        self.long_press_on_location(el, word0_x, word0_y)
+        self.assertEqual(words[0], sel.selected_content)
+
+        # If the second carets is visible, it can be dragged to the position of
+        # the first caret. After that, selection will contain only the first
+        # character.
+        (caret1_x, caret1_y), (caret2_x, caret2_y) = sel.carets_location()
+        self.actions.flick(el, caret2_x, caret2_y, caret1_x, caret1_y).perform()
+        self.assertEqual(words[0][0], sel.selected_content)
+
+    @parameterized(_input_id, el_id=_input_id)
+    @parameterized(_input_padding_id, el_id=_input_padding_id)
+    @parameterized(_textarea_one_line_id, el_id=_textarea_one_line_id)
+    @parameterized(_contenteditable_id, el_id=_contenteditable_id)
+    def test_carets_not_jump_when_dragging_to_editable_content_boundary(self, el_id):
+        self.open_test_html(self._selection_html)
+        el = self.marionette.find_element(By.ID, el_id)
+        sel = SelectionManager(el)
+        original_content = sel.content
+        words = original_content.split()
+        self.assertTrue(len(words) >= 3, 'Expect at least three words in the content.')
+
+        # Goal: the selection is not changed after dragging the caret on the
+        # Y-axis.
+        target_content = words[1]
+
+        self.long_press_on_word(el, 1)
+        (caret1_x, caret1_y), (caret2_x, caret2_y) = sel.carets_location()
+
+        # Drag the first caret up by 50px.
+        self.actions.flick(el, caret1_x, caret1_y, caret1_x, caret1_y - 50).perform()
+        self.assertEqual(target_content, sel.selected_content)
+
+        # Drag the second caret down by 50px.
+        self.actions.flick(el, caret2_x, caret2_y, caret2_x, caret2_y + 50).perform()
+        self.assertEqual(target_content, sel.selected_content)
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