Mercurial Repositories > eric / file comparison
comparison: DebugClients/Python3/coverage/results.py
DebugClients/Python3/coverage/results.py
- changeset 29
- 391dc0bc4ae5
- child 3495
- fac17a82b431
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| 28:dde24fc7f7ba | 29:391dc0bc4ae5 |
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| 1 """Results of coverage measurement.""" | |
| 2 | |
| 3 import os | |
| 4 | |
| 5 from .backward import set, sorted # pylint: disable-msg=W0622 | |
| 6 from .misc import format_lines, NoSource | |
| 7 from .parser import CodeParser | |
| 8 | |
| 9 | |
| 10 class Analysis(object): | |
| 11 """The results of analyzing a code unit.""" | |
| 12 | |
| 13 def __init__(self, cov, code_unit): | |
| 14 self.coverage = cov | |
| 15 self.code_unit = code_unit | |
| 16 | |
| 17 self.filename = self.code_unit.filename | |
| 18 ext = os.path.splitext(self.filename)[1] | |
| 19 source = None | |
| 20 if ext == '.py': | |
| 21 if not os.path.exists(self.filename): | |
| 22 source = self.coverage.file_locator.get_zip_data(self.filename) | |
| 23 if not source: | |
| 24 raise NoSource("No source for code: %r" % self.filename) | |
| 25 | |
| 26 self.parser = CodeParser( | |
| 27 text=source, filename=self.filename, | |
| 28 exclude=self.coverage.exclude_re | |
| 29 ) | |
| 30 self.statements, self.excluded = self.parser.parse_source() | |
| 31 | |
| 32 # Identify missing statements. | |
| 33 executed = self.coverage.data.executed_lines(self.filename) | |
| 34 exec1 = self.parser.first_lines(executed) | |
| 35 self.missing = sorted(set(self.statements) - set(exec1)) | |
| 36 | |
| 37 if self.coverage.data.has_arcs(): | |
| 38 n_branches = self.total_branches() | |
| 39 mba = self.missing_branch_arcs() | |
| 40 n_missing_branches = sum([len(v) for v in mba.values()]) | |
| 41 else: | |
| 42 n_branches = n_missing_branches = 0 | |
| 43 | |
| 44 self.numbers = Numbers( | |
| 45 n_files=1, | |
| 46 n_statements=len(self.statements), | |
| 47 n_excluded=len(self.excluded), | |
| 48 n_missing=len(self.missing), | |
| 49 n_branches=n_branches, | |
| 50 n_missing_branches=n_missing_branches, | |
| 51 ) | |
| 52 | |
| 53 def missing_formatted(self): | |
| 54 """The missing line numbers, formatted nicely. | |
| 55 | |
| 56 Returns a string like "1-2, 5-11, 13-14". | |
| 57 | |
| 58 """ | |
| 59 return format_lines(self.statements, self.missing) | |
| 60 | |
| 61 def has_arcs(self): | |
| 62 """Were arcs measured in this result?""" | |
| 63 return self.coverage.data.has_arcs() | |
| 64 | |
| 65 def arc_possibilities(self): | |
| 66 """Returns a sorted list of the arcs in the code.""" | |
| 67 return self.parser.arcs() | |
| 68 | |
| 69 def arcs_executed(self): | |
| 70 """Returns a sorted list of the arcs actually executed in the code.""" | |
| 71 executed = self.coverage.data.executed_arcs(self.filename) | |
| 72 m2fl = self.parser.first_line | |
| 73 executed = [(m2fl(l1), m2fl(l2)) for (l1,l2) in executed] | |
| 74 return sorted(executed) | |
| 75 | |
| 76 def arcs_missing(self): | |
| 77 """Returns a sorted list of the arcs in the code not executed.""" | |
| 78 possible = self.arc_possibilities() | |
| 79 executed = self.arcs_executed() | |
| 80 missing = [p for p in possible if p not in executed] | |
| 81 return sorted(missing) | |
| 82 | |
| 83 def arcs_unpredicted(self): | |
| 84 """Returns a sorted list of the executed arcs missing from the code.""" | |
| 85 possible = self.arc_possibilities() | |
| 86 executed = self.arcs_executed() | |
| 87 # Exclude arcs here which connect a line to itself. They can occur | |
| 88 # in executed data in some cases. This is where they can cause | |
| 89 # trouble, and here is where it's the least burden to remove them. | |
| 90 unpredicted = [ | |
| 91 e for e in executed | |
| 92 if e not in possible and e[0] != e[1] | |
| 93 ] | |
| 94 return sorted(unpredicted) | |
| 95 | |
| 96 def branch_lines(self): | |
| 97 """Returns lines that have more than one exit.""" | |
| 98 exit_counts = self.parser.exit_counts() | |
| 99 return [l1 for l1,count in exit_counts.items() if count > 1] | |
| 100 | |
| 101 def total_branches(self): | |
| 102 """How many total branches are there?""" | |
| 103 exit_counts = self.parser.exit_counts() | |
| 104 return sum([count for count in exit_counts.values() if count > 1]) | |
| 105 | |
| 106 def missing_branch_arcs(self): | |
| 107 """Return arcs that weren't executed from branch lines. | |
| 108 | |
| 109 Returns {l1:[l2a,l2b,...], ...} | |
| 110 | |
| 111 """ | |
| 112 missing = self.arcs_missing() | |
| 113 branch_lines = set(self.branch_lines()) | |
| 114 mba = {} | |
| 115 for l1, l2 in missing: | |
| 116 if l1 in branch_lines: | |
| 117 if l1 not in mba: | |
| 118 mba[l1] = [] | |
| 119 mba[l1].append(l2) | |
| 120 return mba | |
| 121 | |
| 122 | |
| 123 class Numbers(object): | |
| 124 """The numerical results of measuring coverage. | |
| 125 | |
| 126 This holds the basic statistics from `Analysis`, and is used to roll | |
| 127 up statistics across files. | |
| 128 | |
| 129 """ | |
| 130 def __init__(self, n_files=0, n_statements=0, n_excluded=0, n_missing=0, | |
| 131 n_branches=0, n_missing_branches=0 | |
| 132 ): | |
| 133 self.n_files = n_files | |
| 134 self.n_statements = n_statements | |
| 135 self.n_excluded = n_excluded | |
| 136 self.n_missing = n_missing | |
| 137 self.n_branches = n_branches | |
| 138 self.n_missing_branches = n_missing_branches | |
| 139 | |
| 140 def _get_n_executed(self): | |
| 141 """Returns the number of executed statements.""" | |
| 142 return self.n_statements - self.n_missing | |
| 143 n_executed = property(_get_n_executed) | |
| 144 | |
| 145 def _get_n_executed_branches(self): | |
| 146 """Returns the number of executed branches.""" | |
| 147 return self.n_branches - self.n_missing_branches | |
| 148 n_executed_branches = property(_get_n_executed_branches) | |
| 149 | |
| 150 def _get_pc_covered(self): | |
| 151 """Returns a single percentage value for coverage.""" | |
| 152 if self.n_statements > 0: | |
| 153 pc_cov = (100.0 * (self.n_executed + self.n_executed_branches) / | |
| 154 (self.n_statements + self.n_branches)) | |
| 155 else: | |
| 156 pc_cov = 100.0 | |
| 157 return pc_cov | |
| 158 pc_covered = property(_get_pc_covered) | |
| 159 | |
| 160 def __add__(self, other): | |
| 161 nums = Numbers() | |
| 162 nums.n_files = self.n_files + other.n_files | |
| 163 nums.n_statements = self.n_statements + other.n_statements | |
| 164 nums.n_excluded = self.n_excluded + other.n_excluded | |
| 165 nums.n_missing = self.n_missing + other.n_missing | |
| 166 nums.n_branches = self.n_branches + other.n_branches | |
| 167 nums.n_missing_branches = (self.n_missing_branches + | |
| 168 other.n_missing_branches) | |
| 169 return nums | |
| 170 | |
| 171 def __radd__(self, other): | |
| 172 # Implementing 0+Numbers allows us to sum() a list of Numbers. | |
| 173 if other == 0: | |
| 174 return self | |
| 175 raise NotImplemented |
