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# Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0
# For details: https://github.com/nedbat/coveragepy/blob/master/NOTICE.txt
"""XML reporting for coverage.py"""
from __future__ import annotations
import os
import os.path
import sys
import time
import xml.dom.minidom
from dataclasses import dataclass
from typing import Any, Dict, IO, Iterable, Optional, TYPE_CHECKING
from coverage import __version__, files
from coverage.misc import isolate_module, human_sorted, human_sorted_items
from coverage.plugin import FileReporter
from coverage.report_core import get_analysis_to_report
from coverage.results import Analysis
from coverage.types import TMorf
from coverage.version import __url__
if TYPE_CHECKING:
from coverage import Coverage
os = isolate_module(os)
DTD_URL = "https://raw.githubusercontent.com/cobertura/web/master/htdocs/xml/coverage-04.dtd"
def rate(hit: int, num: int) -> str:
"""Return the fraction of `hit`/`num`, as a string."""
if num == 0:
return "1"
else:
return "%.4g" % (hit / num)
@dataclass
class PackageData:
"""Data we keep about each "package" (in Java terms)."""
elements: Dict[str, xml.dom.minidom.Element]
hits: int
lines: int
br_hits: int
branches: int
def appendChild(parent: Any, child: Any) -> None:
"""Append a child to a parent, in a way mypy will shut up about."""
parent.appendChild(child)
class XmlReporter:
"""A reporter for writing Cobertura-style XML coverage results."""
report_type = "XML report"
def __init__(self, coverage: Coverage) -> None:
self.coverage = coverage
self.config = self.coverage.config
self.source_paths = set()
if self.config.source:
for src in self.config.source:
if os.path.exists(src):
if self.config.relative_files:
src = src.rstrip(r"\/")
else:
src = files.canonical_filename(src)
self.source_paths.add(src)
self.packages: Dict[str, PackageData] = {}
self.xml_out: xml.dom.minidom.Document
def report(self, morfs: Optional[Iterable[TMorf]], outfile: Optional[IO[str]] = None) -> float:
"""Generate a Cobertura-compatible XML report for `morfs`.
`morfs` is a list of modules or file names.
`outfile` is a file object to write the XML to.
"""
# Initial setup.
outfile = outfile or sys.stdout
has_arcs = self.coverage.get_data().has_arcs()
# Create the DOM that will store the data.
impl = xml.dom.minidom.getDOMImplementation()
assert impl is not None
self.xml_out = impl.createDocument(None, "coverage", None)
# Write header stuff.
xcoverage = self.xml_out.documentElement
xcoverage.setAttribute("version", __version__)
xcoverage.setAttribute("timestamp", str(int(time.time()*1000)))
xcoverage.appendChild(self.xml_out.createComment(
f" Generated by coverage.py: {__url__} "
))
xcoverage.appendChild(self.xml_out.createComment(f" Based on {DTD_URL} "))
# Call xml_file for each file in the data.
for fr, analysis in get_analysis_to_report(self.coverage, morfs):
self.xml_file(fr, analysis, has_arcs)
xsources = self.xml_out.createElement("sources")
xcoverage.appendChild(xsources)
# Populate the XML DOM with the source info.
for path in human_sorted(self.source_paths):
xsource = self.xml_out.createElement("source")
appendChild(xsources, xsource)
txt = self.xml_out.createTextNode(path)
appendChild(xsource, txt)
lnum_tot, lhits_tot = 0, 0
bnum_tot, bhits_tot = 0, 0
xpackages = self.xml_out.createElement("packages")
xcoverage.appendChild(xpackages)
# Populate the XML DOM with the package info.
for pkg_name, pkg_data in human_sorted_items(self.packages.items()):
xpackage = self.xml_out.createElement("package")
appendChild(xpackages, xpackage)
xclasses = self.xml_out.createElement("classes")
appendChild(xpackage, xclasses)
for _, class_elt in human_sorted_items(pkg_data.elements.items()):
appendChild(xclasses, class_elt)
xpackage.setAttribute("name", pkg_name.replace(os.sep, "."))
xpackage.setAttribute("line-rate", rate(pkg_data.hits, pkg_data.lines))
if has_arcs:
branch_rate = rate(pkg_data.br_hits, pkg_data.branches)
else:
branch_rate = "0"
xpackage.setAttribute("branch-rate", branch_rate)
xpackage.setAttribute("complexity", "0")
lhits_tot += pkg_data.hits
lnum_tot += pkg_data.lines
bhits_tot += pkg_data.br_hits
bnum_tot += pkg_data.branches
xcoverage.setAttribute("lines-valid", str(lnum_tot))
xcoverage.setAttribute("lines-covered", str(lhits_tot))
xcoverage.setAttribute("line-rate", rate(lhits_tot, lnum_tot))
if has_arcs:
xcoverage.setAttribute("branches-valid", str(bnum_tot))
xcoverage.setAttribute("branches-covered", str(bhits_tot))
xcoverage.setAttribute("branch-rate", rate(bhits_tot, bnum_tot))
else:
xcoverage.setAttribute("branches-covered", "0")
xcoverage.setAttribute("branches-valid", "0")
xcoverage.setAttribute("branch-rate", "0")
xcoverage.setAttribute("complexity", "0")
# Write the output file.
outfile.write(serialize_xml(self.xml_out))
# Return the total percentage.
denom = lnum_tot + bnum_tot
if denom == 0:
pct = 0.0
else:
pct = 100.0 * (lhits_tot + bhits_tot) / denom
return pct
def xml_file(self, fr: FileReporter, analysis: Analysis, has_arcs: bool) -> None:
"""Add to the XML report for a single file."""
if self.config.skip_empty:
if analysis.numbers.n_statements == 0:
return
# Create the "lines" and "package" XML elements, which
# are populated later. Note that a package == a directory.
filename = fr.filename.replace("\\", "/")
for source_path in self.source_paths:
if not self.config.relative_files:
source_path = files.canonical_filename(source_path)
if filename.startswith(source_path.replace("\\", "/") + "/"):
rel_name = filename[len(source_path)+1:]
break
else:
rel_name = fr.relative_filename().replace("\\", "/")
self.source_paths.add(fr.filename[:-len(rel_name)].rstrip(r"\/"))
dirname = os.path.dirname(rel_name) or "."
dirname = "/".join(dirname.split("/")[:self.config.xml_package_depth])
package_name = dirname.replace("/", ".")
package = self.packages.setdefault(package_name, PackageData({}, 0, 0, 0, 0))
xclass: xml.dom.minidom.Element = self.xml_out.createElement("class")
appendChild(xclass, self.xml_out.createElement("methods"))
xlines = self.xml_out.createElement("lines")
appendChild(xclass, xlines)
xclass.setAttribute("name", os.path.relpath(rel_name, dirname))
xclass.setAttribute("filename", rel_name.replace("\\", "/"))
xclass.setAttribute("complexity", "0")
branch_stats = analysis.branch_stats()
missing_branch_arcs = analysis.missing_branch_arcs()
# For each statement, create an XML "line" element.
for line in sorted(analysis.statements):
xline = self.xml_out.createElement("line")
xline.setAttribute("number", str(line))
# Q: can we get info about the number of times a statement is
# executed? If so, that should be recorded here.
xline.setAttribute("hits", str(int(line not in analysis.missing)))
if has_arcs:
if line in branch_stats:
total, taken = branch_stats[line]
xline.setAttribute("branch", "true")
xline.setAttribute(
"condition-coverage",
"%d%% (%d/%d)" % (100*taken//total, taken, total)
)
if line in missing_branch_arcs:
annlines = ["exit" if b < 0 else str(b) for b in missing_branch_arcs[line]]
xline.setAttribute("missing-branches", ",".join(annlines))
appendChild(xlines, xline)
class_lines = len(analysis.statements)
class_hits = class_lines - len(analysis.missing)
if has_arcs:
class_branches = sum(t for t, k in branch_stats.values())
missing_branches = sum(t - k for t, k in branch_stats.values())
class_br_hits = class_branches - missing_branches
else:
class_branches = 0
class_br_hits = 0
# Finalize the statistics that are collected in the XML DOM.
xclass.setAttribute("line-rate", rate(class_hits, class_lines))
if has_arcs:
branch_rate = rate(class_br_hits, class_branches)
else:
branch_rate = "0"
xclass.setAttribute("branch-rate", branch_rate)
package.elements[rel_name] = xclass
package.hits += class_hits
package.lines += class_lines
package.br_hits += class_br_hits
package.branches += class_branches
def serialize_xml(dom: xml.dom.minidom.Document) -> str:
"""Serialize a minidom node to XML."""
return dom.toprettyxml()
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