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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
"""Json reporting for coverage.py"""
import datetime
import json
import sys
from coverage import __version__
from coverage.report import get_analysis_to_report
from coverage.results import Numbers
class JsonReporter:
"""A reporter for writing JSON coverage results."""
report_type = "JSON report"
def __init__(self, coverage):
self.coverage = coverage
self.config = self.coverage.config
self.total = Numbers(self.config.precision)
self.report_data = {}
def report(self, morfs, outfile=None):
"""Generate a json report for `morfs`.
`morfs` is a list of modules or file names.
`outfile` is a file object to write the json to.
"""
outfile = outfile or sys.stdout
coverage_data = self.coverage.get_data()
coverage_data.set_query_contexts(self.config.report_contexts)
self.report_data["meta"] = {
"version": __version__,
"timestamp": datetime.datetime.now().isoformat(),
"branch_coverage": coverage_data.has_arcs(),
"show_contexts": self.config.json_show_contexts,
}
measured_files = {}
for file_reporter, analysis in get_analysis_to_report(self.coverage, morfs):
measured_files[file_reporter.relative_filename()] = self.report_one_file(
coverage_data,
analysis
)
self.report_data["files"] = measured_files
self.report_data["totals"] = {
'covered_lines': self.total.n_executed,
'num_statements': self.total.n_statements,
'percent_covered': self.total.pc_covered,
'percent_covered_display': self.total.pc_covered_str,
'missing_lines': self.total.n_missing,
'excluded_lines': self.total.n_excluded,
}
if coverage_data.has_arcs():
self.report_data["totals"].update({
'num_branches': self.total.n_branches,
'num_partial_branches': self.total.n_partial_branches,
'covered_branches': self.total.n_executed_branches,
'missing_branches': self.total.n_missing_branches,
})
json.dump(
self.report_data,
outfile,
indent=(4 if self.config.json_pretty_print else None),
)
return self.total.n_statements and self.total.pc_covered
def report_one_file(self, coverage_data, analysis):
"""Extract the relevant report data for a single file."""
nums = analysis.numbers
self.total += nums
summary = {
'covered_lines': nums.n_executed,
'num_statements': nums.n_statements,
'percent_covered': nums.pc_covered,
'percent_covered_display': nums.pc_covered_str,
'missing_lines': nums.n_missing,
'excluded_lines': nums.n_excluded,
}
reported_file = {
'executed_lines': sorted(analysis.executed),
'summary': summary,
'missing_lines': sorted(analysis.missing),
'excluded_lines': sorted(analysis.excluded),
}
if self.config.json_show_contexts:
reported_file['contexts'] = analysis.data.contexts_by_lineno(analysis.filename)
if coverage_data.has_arcs():
reported_file['summary'].update({
'num_branches': nums.n_branches,
'num_partial_branches': nums.n_partial_branches,
'covered_branches': nums.n_executed_branches,
'missing_branches': nums.n_missing_branches,
})
reported_file['executed_branches'] = list(
_convert_branch_arcs(analysis.executed_branch_arcs())
)
reported_file['missing_branches'] = list(
_convert_branch_arcs(analysis.missing_branch_arcs())
)
return reported_file
def _convert_branch_arcs(branch_arcs):
"""Convert branch arcs to a list of two-element tuples."""
for source, targets in branch_arcs.items():
for target in targets:
yield source, target
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