Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/galaxy/tool_util/verify/asserts/xml.py @ 0:4f3585e2f14b draft default tip
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author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |
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1 import re |
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2 |
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3 from galaxy.util import ( |
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4 parse_xml_string, |
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5 unicodify, |
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6 ) |
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7 |
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8 |
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9 # Helper functions used to work with XML output. |
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10 def to_xml(output): |
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11 return parse_xml_string(output) |
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12 |
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13 |
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14 def xml_find_text(output, path): |
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15 xml = to_xml(output) |
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16 text = xml.findtext(path) |
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17 return text |
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18 |
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19 |
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20 def xml_find(output, path): |
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21 xml = to_xml(output) |
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22 return xml.find(path) |
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23 |
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24 |
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25 def assert_is_valid_xml(output): |
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26 """ Simple assertion that just verifies the specified output |
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27 is valid XML.""" |
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28 try: |
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29 to_xml(output) |
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30 except Exception as e: |
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31 # TODO: Narrow caught exception to just parsing failure |
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32 raise AssertionError("Expected valid XML, but could not parse output. %s" % unicodify(e)) |
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33 |
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34 |
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35 def assert_has_element_with_path(output, path): |
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36 """ Asserts the specified output has at least one XML element with a |
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37 path matching the specified path argument. Valid paths are the |
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38 simplified subsets of XPath implemented by lxml.etree; |
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39 http://effbot.org/zone/element-xpath.htm for more information.""" |
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40 if xml_find(output, path) is None: |
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41 errmsg = "Expected to find XML element matching expression %s, not such match was found." % path |
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42 raise AssertionError(errmsg) |
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43 |
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44 |
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45 def assert_has_n_elements_with_path(output, path, n): |
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46 """ Asserts the specified output has exactly n elements matching the |
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47 path specified.""" |
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48 xml = to_xml(output) |
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49 n = int(n) |
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50 num_elements = len(xml.findall(path)) |
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51 if num_elements != n: |
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52 errmsg = "Expected to find %d elements with path %s, but %d were found." % (n, path, num_elements) |
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53 raise AssertionError(errmsg) |
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54 |
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55 |
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56 def assert_element_text_matches(output, path, expression): |
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57 """ Asserts the text of the first element matching the specified |
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58 path matches the specified regular expression.""" |
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59 text = xml_find_text(output, path) |
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60 if re.match(expression, text) is None: |
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61 errmsg = f"Expected element with path '{path}' to contain text matching '{expression}', instead text '{text}' was found." |
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62 raise AssertionError(errmsg) |
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63 |
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64 |
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65 def assert_element_text_is(output, path, text): |
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66 """ Asserts the text of the first element matching the specified |
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67 path matches exactly the specified text. """ |
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68 assert_element_text_matches(output, path, re.escape(text)) |
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69 |
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70 |
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71 def assert_attribute_matches(output, path, attribute, expression): |
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72 """ Asserts the specified attribute of the first element matching |
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73 the specified path matches the specified regular expression.""" |
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74 xml = xml_find(output, path) |
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75 attribute_value = xml.attrib[attribute] |
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76 if re.match(expression, attribute_value) is None: |
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77 errmsg = f"Expected attribute '{attribute}' on element with path '{path}' to match '{expression}', instead attribute value was '{attribute_value}'." |
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78 raise AssertionError(errmsg) |
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79 |
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80 |
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81 def assert_attribute_is(output, path, attribute, text): |
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82 """ Asserts the specified attribute of the first element matching |
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83 the specified path matches exactly the specified text.""" |
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84 assert_attribute_matches(output, path, attribute, re.escape(text)) |
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85 |
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86 |
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87 def assert_element_text(output, path, verify_assertions_function, children): |
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88 """ Recursively checks the specified assertions against the text of |
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89 the first element matching the specified path.""" |
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90 text = xml_find_text(output, path) |
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91 verify_assertions_function(text, children) |