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470 lines
18 KiB
470 lines
18 KiB
import os
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from selenium.webdriver import ActionChains
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from selenium.webdriver.common.by import By
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from selenium.webdriver.common.keys import Keys
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from selenium.webdriver.support.ui import WebDriverWait
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from selenium.webdriver.support import expected_conditions as EC
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from selenium.webdriver.remote.webelement import WebElement
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from contextlib import contextmanager
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pjoin = os.path.join
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def wait_for_selector(driver, selector, timeout=10, visible=False, single=False, wait_for_n=1, obscures=False):
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if wait_for_n > 1:
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return _wait_for_multiple(
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driver, By.CSS_SELECTOR, selector, timeout, wait_for_n, visible)
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return _wait_for(driver, By.CSS_SELECTOR, selector, timeout, visible, single, obscures)
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def wait_for_tag(driver, tag, timeout=10, visible=False, single=False, wait_for_n=1, obscures=False):
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if wait_for_n > 1:
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return _wait_for_multiple(
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driver, By.TAG_NAME, tag, timeout, wait_for_n, visible)
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return _wait_for(driver, By.TAG_NAME, tag, timeout, visible, single, obscures)
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def wait_for_xpath(driver, xpath, timeout=10, visible=False, single=False, wait_for_n=1, obscures=False):
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if wait_for_n > 1:
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return _wait_for_multiple(
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driver, By.XPATH, xpath, timeout, wait_for_n, visible)
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return _wait_for(driver, By.XPATH, xpath, timeout, visible, single, obscures)
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def wait_for_script_to_return_true(driver, script, timeout=10):
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WebDriverWait(driver, timeout).until(lambda d: d.execute_script(script))
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def _wait_for(driver, locator_type, locator, timeout=10, visible=False, single=False, obscures=False):
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"""Waits `timeout` seconds for the specified condition to be met. Condition is
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met if any matching element is found. Returns located element(s) when found.
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Args:
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driver: Selenium web driver instance
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locator_type: type of locator (e.g. By.CSS_SELECTOR or By.TAG_NAME)
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locator: name of tag, class, etc. to wait for
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timeout: how long to wait for presence/visibility of element
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visible: if True, require that element is not only present, but visible
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single: if True, return a single element, otherwise return a list of matching
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elements
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obscures: if True, waits until the element becomes invisible
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"""
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wait = WebDriverWait(driver, timeout)
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if obscures:
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conditional = EC.invisibility_of_element_located
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elif single:
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if visible:
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conditional = EC.visibility_of_element_located
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else:
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conditional = EC.presence_of_element_located
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else:
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if visible:
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conditional = EC.visibility_of_all_elements_located
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else:
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conditional = EC.presence_of_all_elements_located
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return wait.until(conditional((locator_type, locator)))
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def _wait_for_multiple(driver, locator_type, locator, timeout, wait_for_n, visible=False):
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"""Waits until `wait_for_n` matching elements to be present (or visible).
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Returns located elements when found.
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Args:
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driver: Selenium web driver instance
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locator_type: type of locator (e.g. By.CSS_SELECTOR or By.TAG_NAME)
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locator: name of tag, class, etc. to wait for
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timeout: how long to wait for presence/visibility of element
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wait_for_n: wait until this number of matching elements are present/visible
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visible: if True, require that elements are not only present, but visible
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"""
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wait = WebDriverWait(driver, timeout)
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def multiple_found(driver):
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elements = driver.find_elements(locator_type, locator)
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if visible:
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elements = [e for e in elements if e.is_displayed()]
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if len(elements) < wait_for_n:
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return False
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return elements
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return wait.until(multiple_found)
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class CellTypeError(ValueError):
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def __init__(self, message=""):
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self.message = message
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class Notebook:
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def __init__(self, browser):
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self.browser = browser
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self._wait_for_start()
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self.disable_autosave_and_onbeforeunload()
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def __len__(self):
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return len(self.cells)
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def __getitem__(self, key):
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return self.cells[key]
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def __setitem__(self, key, item):
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if isinstance(key, int):
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self.edit_cell(index=key, content=item, render=False)
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# TODO: re-add slicing support, handle general python slicing behaviour
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# includes: overwriting the entire self.cells object if you do
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# self[:] = []
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# elif isinstance(key, slice):
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# indices = (self.index(cell) for cell in self[key])
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# for k, v in zip(indices, item):
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# self.edit_cell(index=k, content=v, render=False)
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def __iter__(self):
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return (cell for cell in self.cells)
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def _wait_for_start(self):
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"""Wait until the notebook interface is loaded and the kernel started"""
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wait_for_selector(self.browser, '.cell')
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WebDriverWait(self.browser, 10).until(
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lambda drvr: self.is_kernel_running()
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)
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@property
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def body(self):
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return self.browser.find_element_by_tag_name("body")
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@property
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def cells(self):
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"""Gets all cells once they are visible.
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"""
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return self.browser.find_elements_by_class_name("cell")
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@property
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def current_index(self):
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return self.index(self.current_cell)
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def index(self, cell):
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return self.cells.index(cell)
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def disable_autosave_and_onbeforeunload(self):
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"""Disable request to save before closing window and autosave.
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This is most easily done by using js directly.
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"""
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self.browser.execute_script("window.onbeforeunload = null;")
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self.browser.execute_script("Jupyter.notebook.set_autosave_interval(0)")
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def to_command_mode(self):
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"""Changes us into command mode on currently focused cell
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"""
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self.body.send_keys(Keys.ESCAPE)
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self.browser.execute_script("return Jupyter.notebook.handle_command_mode("
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"Jupyter.notebook.get_cell("
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"Jupyter.notebook.get_edit_index()))")
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def focus_cell(self, index=0):
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cell = self.cells[index]
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cell.click()
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self.to_command_mode()
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self.current_cell = cell
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def select_cell_range(self, initial_index=0, final_index=0):
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self.focus_cell(initial_index)
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self.to_command_mode()
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for i in range(final_index - initial_index):
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shift(self.browser, 'j')
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def find_and_replace(self, index=0, find_txt='', replace_txt=''):
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self.focus_cell(index)
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self.to_command_mode()
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self.body.send_keys('f')
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wait_for_selector(self.browser, "#find-and-replace", single=True)
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self.browser.find_element_by_id("findreplace_allcells_btn").click()
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self.browser.find_element_by_id("findreplace_find_inp").send_keys(find_txt)
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self.browser.find_element_by_id("findreplace_replace_inp").send_keys(replace_txt)
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self.browser.find_element_by_id("findreplace_replaceall_btn").click()
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def convert_cell_type(self, index=0, cell_type="code"):
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# TODO add check to see if it is already present
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self.focus_cell(index)
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cell = self.cells[index]
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if cell_type == "markdown":
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self.current_cell.send_keys("m")
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elif cell_type == "raw":
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self.current_cell.send_keys("r")
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elif cell_type == "code":
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self.current_cell.send_keys("y")
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else:
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raise CellTypeError(("{} is not a valid cell type,"
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"use 'code', 'markdown', or 'raw'").format(cell_type))
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self.wait_for_stale_cell(cell)
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self.focus_cell(index)
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return self.current_cell
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def wait_for_stale_cell(self, cell):
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""" This is needed to switch a cell's mode and refocus it, or to render it.
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Warning: there is currently no way to do this when changing between
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markdown and raw cells.
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"""
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wait = WebDriverWait(self.browser, 10)
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element = wait.until(EC.staleness_of(cell))
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def wait_for_element_availability(self, element):
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_wait_for(self.browser, By.CLASS_NAME, element, visible=True)
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def get_cells_contents(self):
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JS = 'return Jupyter.notebook.get_cells().map(function(c) {return c.get_text();})'
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return self.browser.execute_script(JS)
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def get_cell_contents(self, index=0, selector='div .CodeMirror-code'):
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return self.cells[index].find_element_by_css_selector(selector).text
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def get_cell_output(self, index=0, output='output_subarea'):
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return self.cells[index].find_elements_by_class_name(output)
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def wait_for_cell_output(self, index=0, timeout=10):
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return WebDriverWait(self.browser, timeout).until(
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lambda b: self.get_cell_output(index)
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)
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def set_cell_metadata(self, index, key, value):
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JS = 'Jupyter.notebook.get_cell({}).metadata.{} = {}'.format(index, key, value)
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return self.browser.execute_script(JS)
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def get_cell_type(self, index=0):
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JS = 'return Jupyter.notebook.get_cell({}).cell_type'.format(index)
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return self.browser.execute_script(JS)
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def set_cell_input_prompt(self, index, prmpt_val):
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JS = 'Jupyter.notebook.get_cell({}).set_input_prompt({})'.format(index, prmpt_val)
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self.browser.execute_script(JS)
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def edit_cell(self, cell=None, index=0, content="", render=False):
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"""Set the contents of a cell to *content*, by cell object or by index
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"""
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if cell is not None:
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index = self.index(cell)
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self.focus_cell(index)
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# Select & delete anything already in the cell
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self.current_cell.send_keys(Keys.ENTER)
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cmdtrl(self.browser, 'a')
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self.current_cell.send_keys(Keys.DELETE)
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for line_no, line in enumerate(content.splitlines()):
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if line_no != 0:
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self.current_cell.send_keys(Keys.ENTER, "\n")
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self.current_cell.send_keys(Keys.ENTER, line)
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if render:
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self.execute_cell(self.current_index)
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def execute_cell(self, cell_or_index=None):
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if isinstance(cell_or_index, int):
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index = cell_or_index
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elif isinstance(cell_or_index, WebElement):
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index = self.index(cell_or_index)
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else:
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raise TypeError("execute_cell only accepts a WebElement or an int")
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self.focus_cell(index)
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self.current_cell.send_keys(Keys.CONTROL, Keys.ENTER)
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def add_cell(self, index=-1, cell_type="code", content=""):
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self.focus_cell(index)
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self.current_cell.send_keys("b")
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new_index = index + 1 if index >= 0 else index
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if content:
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self.edit_cell(index=index, content=content)
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if cell_type != 'code':
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self.convert_cell_type(index=new_index, cell_type=cell_type)
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def add_and_execute_cell(self, index=-1, cell_type="code", content=""):
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self.add_cell(index=index, cell_type=cell_type, content=content)
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self.execute_cell(index)
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def delete_cell(self, index):
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self.focus_cell(index)
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self.to_command_mode()
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self.current_cell.send_keys('dd')
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def add_markdown_cell(self, index=-1, content="", render=True):
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self.add_cell(index, cell_type="markdown")
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self.edit_cell(index=index, content=content, render=render)
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def append(self, *values, cell_type="code"):
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for i, value in enumerate(values):
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if isinstance(value, str):
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self.add_cell(cell_type=cell_type,
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content=value)
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else:
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raise TypeError("Don't know how to add cell from %r" % value)
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def extend(self, values):
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self.append(*values)
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def run_all(self):
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for cell in self:
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self.execute_cell(cell)
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def trigger_keydown(self, keys):
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trigger_keystrokes(self.body, keys)
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def is_kernel_running(self):
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return self.browser.execute_script(
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"return Jupyter.notebook.kernel && Jupyter.notebook.kernel.is_connected()"
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)
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def clear_cell_output(self, index):
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JS = 'Jupyter.notebook.clear_output({})'.format(index)
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self.browser.execute_script(JS)
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@classmethod
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def new_notebook(cls, browser, kernel_name='kernel-python3'):
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with new_window(browser):
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select_kernel(browser, kernel_name=kernel_name)
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return cls(browser)
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def select_kernel(browser, kernel_name='kernel-python3'):
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"""Clicks the "new" button and selects a kernel from the options.
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"""
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wait = WebDriverWait(browser, 10)
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new_button = wait.until(EC.element_to_be_clickable((By.ID, "new-dropdown-button")))
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new_button.click()
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kernel_selector = '#{} a'.format(kernel_name)
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kernel = wait_for_selector(browser, kernel_selector, single=True)
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kernel.click()
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@contextmanager
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def new_window(browser):
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"""Contextmanager for switching to & waiting for a window created.
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This context manager gives you the ability to create a new window inside
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the created context and it will switch you to that new window.
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Usage example:
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from notebook.tests.selenium.utils import new_window, Notebook
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⋮ # something that creates a browser object
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with new_window(browser):
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select_kernel(browser, kernel_name=kernel_name)
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nb = Notebook(browser)
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"""
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initial_window_handles = browser.window_handles
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yield
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new_window_handles = [window for window in browser.window_handles
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if window not in initial_window_handles]
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if not new_window_handles:
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raise Exception("No new windows opened during context")
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browser.switch_to.window(new_window_handles[0])
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def shift(browser, k):
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"""Send key combination Shift+(k)"""
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trigger_keystrokes(browser, "shift-%s"%k)
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def cmdtrl(browser, k):
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"""Send key combination Ctrl+(k) or Command+(k) for MacOS"""
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trigger_keystrokes(browser, "command-%s"%k) if os.uname()[0] == "Darwin" else trigger_keystrokes(browser, "control-%s"%k)
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def alt(browser, k):
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"""Send key combination Alt+(k)"""
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trigger_keystrokes(browser, 'alt-%s'%k)
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def trigger_keystrokes(browser, *keys):
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""" Send the keys in sequence to the browser.
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Handles following key combinations
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1. with modifiers eg. 'control-alt-a', 'shift-c'
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2. just modifiers eg. 'alt', 'esc'
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3. non-modifiers eg. 'abc'
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Modifiers : http://seleniumhq.github.io/selenium/docs/api/py/webdriver/selenium.webdriver.common.keys.html
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"""
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for each_key_combination in keys:
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keys = each_key_combination.split('-')
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if len(keys) > 1: # key has modifiers eg. control, alt, shift
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modifiers_keys = [getattr(Keys, x.upper()) for x in keys[:-1]]
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ac = ActionChains(browser)
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for i in modifiers_keys: ac = ac.key_down(i)
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ac.send_keys(keys[-1])
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for i in modifiers_keys[::-1]: ac = ac.key_up(i)
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ac.perform()
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else: # single key stroke. Check if modifier eg. "up"
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browser.send_keys(getattr(Keys, keys[0].upper(), keys[0]))
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def validate_dualmode_state(notebook, mode, index):
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'''Validate the entire dual mode state of the notebook.
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Checks if the specified cell is selected, and the mode and keyboard mode are the same.
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Depending on the mode given:
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Command: Checks that no cells are in focus or in edit mode.
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Edit: Checks that only the specified cell is in focus and in edit mode.
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'''
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def is_only_cell_edit(index):
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JS = 'return Jupyter.notebook.get_cells().map(function(c) {return c.mode;})'
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cells_mode = notebook.browser.execute_script(JS)
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#None of the cells are in edit mode
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if index is None:
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for mode in cells_mode:
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if mode == 'edit':
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return False
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return True
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#Only the index cell is on edit mode
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for i, mode in enumerate(cells_mode):
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if i == index:
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if mode != 'edit':
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return False
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else:
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if mode == 'edit':
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return False
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return True
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def is_focused_on(index):
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JS = "return $('#notebook .CodeMirror-focused textarea').length;"
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focused_cells = notebook.browser.execute_script(JS)
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if index is None:
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return focused_cells == 0
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if focused_cells != 1: #only one cell is focused
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return False
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JS = "return $('#notebook .CodeMirror-focused textarea')[0];"
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focused_cell = notebook.browser.execute_script(JS)
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JS = "return IPython.notebook.get_cell(%s).code_mirror.getInputField()"%index
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cell = notebook.browser.execute_script(JS)
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return focused_cell == cell
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#general test
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JS = "return IPython.keyboard_manager.mode;"
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keyboard_mode = notebook.browser.execute_script(JS)
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JS = "return IPython.notebook.mode;"
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notebook_mode = notebook.browser.execute_script(JS)
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#validate selected cell
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JS = "return Jupyter.notebook.get_selected_cells_indices();"
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cell_index = notebook.browser.execute_script(JS)
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assert cell_index == [index] #only the index cell is selected
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if mode != 'command' and mode != 'edit':
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raise Exception('An unknown mode was send: mode = "%s"'%mode) #An unknown mode is send
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#validate mode
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assert mode == keyboard_mode #keyboard mode is correct
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if mode == 'command':
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assert is_focused_on(None) #no focused cells
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assert is_only_cell_edit(None) #no cells in edit mode
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elif mode == 'edit':
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assert is_focused_on(index) #The specified cell is focused
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assert is_only_cell_edit(index) #The specified cell is the only one in edit mode
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