KaneAI - World’s First E2E Software Testing Agent.Book a Demo Join TestMu Conference

How to use remove_targets method in localstack

Best Python code snippet using localstack_python

xml_patch.py

Source:xml_patch.py

1#!/usr/bin/env python2# Copyright (c) 2012 The Chromium Authors. All rights reserved.3# Use of this source code is governed by a BSD-style license that can be4# found in the LICENSE file.5""" This module is a utility for applying an xml patch to an xml file.6The format of the patch is described in the documentation for7the patch_xml() function.8"""9import collections10import copy11import third_party.etree.ElementTree as ElementTree12def PatchXML(source_xml_tree, patch_xml_tree):13  """Applies a patch to the source xml and returns a new merged xml tree.14  Given a patch xml tree, it applies the patch to the source xml tree15  and returns the resulting modified xml tree.16  Patching is done by reading the patch_xml_tree for an element and then17  finding the in-order matching element in the source_xml_tree. Both elements18  are entered to look for matching sub-elements recursively.19  Patching occurs when a <PatchRemove> or <PatchAdd> element is encountered20  in the patch xml tree. For a remove operation, the first element in the21  source_xml_tree from the current read position that matches the contents of22  the <PatchRemove> element is removed. The read pointer is updated accordingly.23  For an add operation, the contents of the <PatchAdd> element is added at the24  current reading location.25  If for example, an add operation needs to be done after certain elements,26  the elements can be listed before the <PatchAdd> operation so that they are27  matched first before the add operation.28  Example:29  Source file:30  <a>31    <b></b>32    <c></c>33  </a>34  Patch file:35  <a>36    <b></b>37    <PatchAdd><zzz></zzz></PatchAdd>38  </a>39  Result:40  <a>41    <b></b>42    <zzz></zzz>43    <c></c>44  </a>45  Args:46    source_xml_tree: An ElementTree object with base xml to change.47    patch_xml_tree: An ElementTree object with xml to apply. See above notes48      for the xml structure of a patch.49  Returns:50    A new xml tree based on source with the patch applied.51  Raises:52    General Exception indicating a merge error has occured.53  """54  source = source_xml_tree.getroot()55  patch = patch_xml_tree.getroot()56  if not ElementMatch(source, patch):57    raise Exception('Root nodes do not match, cannot merge')58  return ElementTree.ElementTree(MergeElement(source, patch))59def MergeElement(source_elem, patch_elem):60  """Applies a single patch element to a single source element.61  The merge is applied recursively for sub-elements. See the documentation62  for patch_xml() for a description of how patching is done.63  Args:64    source_elem: An Element object with xml to change.65    patch_elem: An Element object with xml to apply.66  Returns:67    A new xml Element with the patch_elem applied to source_elem.68  Raises:69    General Exception indicating a merge error has occured.70  """71  assert ElementMatch(source_elem, patch_elem), 'Mismatched merge'72  # Create a new element by copying tags from source. Below we will merge73  # the subelements of source with the patch and put them in new_element.74  new_element = ElementTree.Element(source_elem.tag, source_elem.attrib)75  patch_children = list(patch_elem)76  patch_index = 077  remove_targets = collections.deque()78  find_target = None79  for source_child in source_elem:80    # If we have no current patch operation then read the next patch element.81    while (len(remove_targets) == 0 and find_target is None and82        patch_index < len(patch_children)):83      # PatchAdd operation.84      if IsPatchAddTag(patch_children[patch_index].tag):85        for addition in patch_children[patch_index]:86          new_element.append(copy.deepcopy(addition))87      # Start a remove operation by creating a list of elements to skip adding.88      elif IsPatchRemoveTag(patch_children[patch_index].tag):89        remove_targets = collections.deque(90            patch_children[patch_index])91      # Not an Add or Remove, must be a find target (find operation).92      else:93        find_target = patch_children[patch_index]94      patch_index += 195    # A remove operation means skipping adding the element to new_element.96    if (len(remove_targets) > 0 and97        ElementMatch(source_child, remove_targets[0])):98      remove_targets.popleft()99    # A matching find target means we must merge the sub-elements.100    elif find_target is not None and ElementMatch(source_child, find_target):101      merge = MergeElement(source_child, find_target)102      new_element.append(copy.deepcopy(merge))103      find_target = None104    # Otherwise this source element doesn't match any patch operations, add it.105    else:106      new_element.append(copy.deepcopy(source_child))107  # Raise exceptions if find/remove didn't finish before the end of the source.108  if find_target is not None:109    raise Exception('Find operation never matched:' + find_target.tag)110  elif len(remove_targets) != 0:111    raise Exception('Remove operation never matched: ' + remove_targets)112  # We may have more add operations after source has run empty:113  while patch_index < len(patch_children):114    if IsPatchAddTag(patch_children[patch_index].tag):115      for addition in patch_children[patch_index]:116        new_element.append(copy.deepcopy(addition))117      patch_index += 1118    else:119      raise Exception('Non-add operation attempted after source end. ' +120                      'Tag: %s, Children %s' %121                      (patch_children[patch_index].tag,122                       list(patch_children[patch_index])))123  return new_element124def ElementMatch(elem1, elem2):125  return elem1.tag == elem2.tag and elem1.attrib == elem2.attrib126def IsPatchAddTag(tag):127  # We look at the end of the tag because we need to ignore the namespace.128  # Because the tag can be a sub-element of arbitrary elements it could inherit129  # any default namespace.130  return tag.endswith('PatchAdd')131def IsPatchRemoveTag(tag):132  # We look at the end of the tag because we need to ignore the namespace.133  # Because the tag can be a sub-element of arbitrary elements it could inherit134  # any default namespace....

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.