651 lines
23 KiB
Python
651 lines
23 KiB
Python
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# Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0
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# For details: https://github.com/nedbat/coveragepy/blob/master/NOTICE.txt
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"""HTML reporting for coverage.py."""
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from __future__ import annotations
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import collections
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import datetime
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import functools
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import json
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import os
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import re
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import shutil
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import string # pylint: disable=deprecated-module
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from dataclasses import dataclass
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from typing import Any, Dict, Iterable, List, Optional, Tuple, TYPE_CHECKING, cast
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import coverage
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from coverage.data import CoverageData, add_data_to_hash
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from coverage.exceptions import NoDataError
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from coverage.files import flat_rootname
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from coverage.misc import ensure_dir, file_be_gone, Hasher, isolate_module, format_local_datetime
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from coverage.misc import human_sorted, plural, stdout_link
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from coverage.report_core import get_analysis_to_report
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from coverage.results import Analysis, Numbers
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from coverage.templite import Templite
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from coverage.types import TLineNo, TMorf
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from coverage.version import __url__
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if TYPE_CHECKING:
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# To avoid circular imports:
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from coverage import Coverage
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from coverage.plugins import FileReporter
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# To be able to use 3.8 typing features, and still run on 3.7:
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from typing import TypedDict
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class IndexInfoDict(TypedDict):
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"""Information for each file, to render the index file."""
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nums: Numbers
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html_filename: str
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relative_filename: str
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class FileInfoDict(TypedDict):
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"""Summary of the information from last rendering, to avoid duplicate work."""
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hash: str
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index: IndexInfoDict
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os = isolate_module(os)
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def data_filename(fname: str) -> str:
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"""Return the path to an "htmlfiles" data file of ours.
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"""
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static_dir = os.path.join(os.path.dirname(__file__), "htmlfiles")
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static_filename = os.path.join(static_dir, fname)
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return static_filename
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def read_data(fname: str) -> str:
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"""Return the contents of a data file of ours."""
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with open(data_filename(fname)) as data_file:
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return data_file.read()
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def write_html(fname: str, html: str) -> None:
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"""Write `html` to `fname`, properly encoded."""
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html = re.sub(r"(\A\s+)|(\s+$)", "", html, flags=re.MULTILINE) + "\n"
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with open(fname, "wb") as fout:
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fout.write(html.encode("ascii", "xmlcharrefreplace"))
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@dataclass
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class LineData:
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"""The data for each source line of HTML output."""
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tokens: List[Tuple[str, str]]
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number: TLineNo
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category: str
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statement: bool
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contexts: List[str]
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contexts_label: str
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context_list: List[str]
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short_annotations: List[str]
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long_annotations: List[str]
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html: str = ""
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context_str: Optional[str] = None
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annotate: Optional[str] = None
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annotate_long: Optional[str] = None
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css_class: str = ""
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@dataclass
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class FileData:
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"""The data for each source file of HTML output."""
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relative_filename: str
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nums: Numbers
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lines: List[LineData]
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class HtmlDataGeneration:
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"""Generate structured data to be turned into HTML reports."""
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EMPTY = "(empty)"
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def __init__(self, cov: Coverage) -> None:
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self.coverage = cov
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self.config = self.coverage.config
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data = self.coverage.get_data()
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self.has_arcs = data.has_arcs()
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if self.config.show_contexts:
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if data.measured_contexts() == {""}:
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self.coverage._warn("No contexts were measured")
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data.set_query_contexts(self.config.report_contexts)
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def data_for_file(self, fr: FileReporter, analysis: Analysis) -> FileData:
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"""Produce the data needed for one file's report."""
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if self.has_arcs:
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missing_branch_arcs = analysis.missing_branch_arcs()
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arcs_executed = analysis.arcs_executed()
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if self.config.show_contexts:
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contexts_by_lineno = analysis.data.contexts_by_lineno(analysis.filename)
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lines = []
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for lineno, tokens in enumerate(fr.source_token_lines(), start=1):
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# Figure out how to mark this line.
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category = ""
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short_annotations = []
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long_annotations = []
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if lineno in analysis.excluded:
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category = "exc"
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elif lineno in analysis.missing:
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category = "mis"
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elif self.has_arcs and lineno in missing_branch_arcs:
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category = "par"
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for b in missing_branch_arcs[lineno]:
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if b < 0:
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short_annotations.append("exit")
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else:
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short_annotations.append(str(b))
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long_annotations.append(fr.missing_arc_description(lineno, b, arcs_executed))
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elif lineno in analysis.statements:
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category = "run"
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contexts = []
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contexts_label = ""
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context_list = []
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if category and self.config.show_contexts:
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contexts = human_sorted(c or self.EMPTY for c in contexts_by_lineno.get(lineno, ()))
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if contexts == [self.EMPTY]:
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contexts_label = self.EMPTY
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else:
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contexts_label = f"{len(contexts)} ctx"
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context_list = contexts
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lines.append(LineData(
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tokens=tokens,
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number=lineno,
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category=category,
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statement=(lineno in analysis.statements),
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contexts=contexts,
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contexts_label=contexts_label,
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context_list=context_list,
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short_annotations=short_annotations,
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long_annotations=long_annotations,
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))
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file_data = FileData(
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relative_filename=fr.relative_filename(),
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nums=analysis.numbers,
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lines=lines,
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)
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return file_data
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class FileToReport:
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"""A file we're considering reporting."""
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def __init__(self, fr: FileReporter, analysis: Analysis) -> None:
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self.fr = fr
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self.analysis = analysis
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self.rootname = flat_rootname(fr.relative_filename())
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self.html_filename = self.rootname + ".html"
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HTML_SAFE = string.ascii_letters + string.digits + "!#$%'()*+,-./:;=?@[]^_`{|}~"
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@functools.lru_cache(maxsize=None)
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def encode_int(n: int) -> str:
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"""Create a short HTML-safe string from an integer, using HTML_SAFE."""
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if n == 0:
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return HTML_SAFE[0]
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r = []
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while n:
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n, t = divmod(n, len(HTML_SAFE))
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r.append(HTML_SAFE[t])
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return "".join(r)
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class HtmlReporter:
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"""HTML reporting."""
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# These files will be copied from the htmlfiles directory to the output
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# directory.
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STATIC_FILES = [
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"style.css",
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"coverage_html.js",
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"keybd_closed.png",
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"keybd_open.png",
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"favicon_32.png",
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]
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def __init__(self, cov: Coverage) -> None:
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self.coverage = cov
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self.config = self.coverage.config
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self.directory = self.config.html_dir
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self.skip_covered = self.config.html_skip_covered
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if self.skip_covered is None:
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self.skip_covered = self.config.skip_covered
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self.skip_empty = self.config.html_skip_empty
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if self.skip_empty is None:
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self.skip_empty = self.config.skip_empty
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self.skipped_covered_count = 0
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self.skipped_empty_count = 0
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title = self.config.html_title
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self.extra_css: Optional[str]
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if self.config.extra_css:
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self.extra_css = os.path.basename(self.config.extra_css)
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else:
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self.extra_css = None
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self.data = self.coverage.get_data()
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self.has_arcs = self.data.has_arcs()
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self.file_summaries: List[IndexInfoDict] = []
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self.all_files_nums: List[Numbers] = []
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self.incr = IncrementalChecker(self.directory)
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self.datagen = HtmlDataGeneration(self.coverage)
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self.totals = Numbers(precision=self.config.precision)
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self.directory_was_empty = False
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self.first_fr = None
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self.final_fr = None
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self.template_globals = {
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# Functions available in the templates.
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"escape": escape,
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"pair": pair,
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"len": len,
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# Constants for this report.
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"__url__": __url__,
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"__version__": coverage.__version__,
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"title": title,
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"time_stamp": format_local_datetime(datetime.datetime.now()),
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"extra_css": self.extra_css,
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"has_arcs": self.has_arcs,
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"show_contexts": self.config.show_contexts,
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# Constants for all reports.
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# These css classes determine which lines are highlighted by default.
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"category": {
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"exc": "exc show_exc",
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"mis": "mis show_mis",
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"par": "par run show_par",
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"run": "run",
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},
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}
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self.pyfile_html_source = read_data("pyfile.html")
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self.source_tmpl = Templite(self.pyfile_html_source, self.template_globals)
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def report(self, morfs: Optional[Iterable[TMorf]]) -> float:
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"""Generate an HTML report for `morfs`.
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`morfs` is a list of modules or file names.
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"""
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# Read the status data and check that this run used the same
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# global data as the last run.
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self.incr.read()
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self.incr.check_global_data(self.config, self.pyfile_html_source)
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# Process all the files. For each page we need to supply a link
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# to the next and previous page.
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files_to_report = []
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for fr, analysis in get_analysis_to_report(self.coverage, morfs):
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ftr = FileToReport(fr, analysis)
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should = self.should_report_file(ftr)
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if should:
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files_to_report.append(ftr)
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else:
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file_be_gone(os.path.join(self.directory, ftr.html_filename))
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for i, ftr in enumerate(files_to_report):
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if i == 0:
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prev_html = "index.html"
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else:
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prev_html = files_to_report[i - 1].html_filename
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if i == len(files_to_report) - 1:
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next_html = "index.html"
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else:
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next_html = files_to_report[i + 1].html_filename
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self.write_html_file(ftr, prev_html, next_html)
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if not self.all_files_nums:
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raise NoDataError("No data to report.")
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self.totals = cast(Numbers, sum(self.all_files_nums))
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# Write the index file.
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if files_to_report:
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first_html = files_to_report[0].html_filename
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final_html = files_to_report[-1].html_filename
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else:
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first_html = final_html = "index.html"
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self.index_file(first_html, final_html)
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self.make_local_static_report_files()
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return self.totals.n_statements and self.totals.pc_covered
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def make_directory(self) -> None:
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"""Make sure our htmlcov directory exists."""
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ensure_dir(self.directory)
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if not os.listdir(self.directory):
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self.directory_was_empty = True
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def make_local_static_report_files(self) -> None:
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"""Make local instances of static files for HTML report."""
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# The files we provide must always be copied.
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for static in self.STATIC_FILES:
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shutil.copyfile(data_filename(static), os.path.join(self.directory, static))
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# Only write the .gitignore file if the directory was originally empty.
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# .gitignore can't be copied from the source tree because it would
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# prevent the static files from being checked in.
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if self.directory_was_empty:
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with open(os.path.join(self.directory, ".gitignore"), "w") as fgi:
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fgi.write("# Created by coverage.py\n*\n")
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# The user may have extra CSS they want copied.
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if self.extra_css:
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assert self.config.extra_css is not None
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shutil.copyfile(self.config.extra_css, os.path.join(self.directory, self.extra_css))
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def should_report_file(self, ftr: FileToReport) -> bool:
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"""Determine if we'll report this file."""
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# Get the numbers for this file.
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nums = ftr.analysis.numbers
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self.all_files_nums.append(nums)
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if self.skip_covered:
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# Don't report on 100% files.
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no_missing_lines = (nums.n_missing == 0)
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no_missing_branches = (nums.n_partial_branches == 0)
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if no_missing_lines and no_missing_branches:
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# If there's an existing file, remove it.
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self.skipped_covered_count += 1
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return False
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if self.skip_empty:
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# Don't report on empty files.
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if nums.n_statements == 0:
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self.skipped_empty_count += 1
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return False
|
||
|
|
|
||
|
|
return True
|
||
|
|
|
||
|
|
def write_html_file(self, ftr: FileToReport, prev_html: str, next_html: str) -> None:
|
||
|
|
"""Generate an HTML file for one source file."""
|
||
|
|
self.make_directory()
|
||
|
|
|
||
|
|
# Find out if the file on disk is already correct.
|
||
|
|
if self.incr.can_skip_file(self.data, ftr.fr, ftr.rootname):
|
||
|
|
self.file_summaries.append(self.incr.index_info(ftr.rootname))
|
||
|
|
return
|
||
|
|
|
||
|
|
# Write the HTML page for this file.
|
||
|
|
file_data = self.datagen.data_for_file(ftr.fr, ftr.analysis)
|
||
|
|
|
||
|
|
contexts = collections.Counter(c for cline in file_data.lines for c in cline.contexts)
|
||
|
|
context_codes = {y: i for (i, y) in enumerate(x[0] for x in contexts.most_common())}
|
||
|
|
if context_codes:
|
||
|
|
contexts_json = json.dumps(
|
||
|
|
{encode_int(v): k for (k, v) in context_codes.items()},
|
||
|
|
indent=2,
|
||
|
|
)
|
||
|
|
else:
|
||
|
|
contexts_json = None
|
||
|
|
|
||
|
|
for ldata in file_data.lines:
|
||
|
|
# Build the HTML for the line.
|
||
|
|
html_parts = []
|
||
|
|
for tok_type, tok_text in ldata.tokens:
|
||
|
|
if tok_type == "ws":
|
||
|
|
html_parts.append(escape(tok_text))
|
||
|
|
else:
|
||
|
|
tok_html = escape(tok_text) or " "
|
||
|
|
html_parts.append(f'<span class="{tok_type}">{tok_html}</span>')
|
||
|
|
ldata.html = "".join(html_parts)
|
||
|
|
if ldata.context_list:
|
||
|
|
encoded_contexts = [
|
||
|
|
encode_int(context_codes[c_context]) for c_context in ldata.context_list
|
||
|
|
]
|
||
|
|
code_width = max(len(ec) for ec in encoded_contexts)
|
||
|
|
ldata.context_str = (
|
||
|
|
str(code_width)
|
||
|
|
+ "".join(ec.ljust(code_width) for ec in encoded_contexts)
|
||
|
|
)
|
||
|
|
else:
|
||
|
|
ldata.context_str = ""
|
||
|
|
|
||
|
|
if ldata.short_annotations:
|
||
|
|
# 202F is NARROW NO-BREAK SPACE.
|
||
|
|
# 219B is RIGHTWARDS ARROW WITH STROKE.
|
||
|
|
ldata.annotate = ", ".join(
|
||
|
|
f"{ldata.number} ↛ {d}"
|
||
|
|
for d in ldata.short_annotations
|
||
|
|
)
|
||
|
|
else:
|
||
|
|
ldata.annotate = None
|
||
|
|
|
||
|
|
if ldata.long_annotations:
|
||
|
|
longs = ldata.long_annotations
|
||
|
|
if len(longs) == 1:
|
||
|
|
ldata.annotate_long = longs[0]
|
||
|
|
else:
|
||
|
|
ldata.annotate_long = "{:d} missed branches: {}".format(
|
||
|
|
len(longs),
|
||
|
|
", ".join(
|
||
|
|
f"{num:d}) {ann_long}"
|
||
|
|
for num, ann_long in enumerate(longs, start=1)
|
||
|
|
),
|
||
|
|
)
|
||
|
|
else:
|
||
|
|
ldata.annotate_long = None
|
||
|
|
|
||
|
|
css_classes = []
|
||
|
|
if ldata.category:
|
||
|
|
css_classes.append(
|
||
|
|
self.template_globals["category"][ldata.category] # type: ignore[index]
|
||
|
|
)
|
||
|
|
ldata.css_class = " ".join(css_classes) or "pln"
|
||
|
|
|
||
|
|
html_path = os.path.join(self.directory, ftr.html_filename)
|
||
|
|
html = self.source_tmpl.render({
|
||
|
|
**file_data.__dict__,
|
||
|
|
"contexts_json": contexts_json,
|
||
|
|
"prev_html": prev_html,
|
||
|
|
"next_html": next_html,
|
||
|
|
})
|
||
|
|
write_html(html_path, html)
|
||
|
|
|
||
|
|
# Save this file's information for the index file.
|
||
|
|
index_info: IndexInfoDict = {
|
||
|
|
"nums": ftr.analysis.numbers,
|
||
|
|
"html_filename": ftr.html_filename,
|
||
|
|
"relative_filename": ftr.fr.relative_filename(),
|
||
|
|
}
|
||
|
|
self.file_summaries.append(index_info)
|
||
|
|
self.incr.set_index_info(ftr.rootname, index_info)
|
||
|
|
|
||
|
|
def index_file(self, first_html: str, final_html: str) -> None:
|
||
|
|
"""Write the index.html file for this report."""
|
||
|
|
self.make_directory()
|
||
|
|
index_tmpl = Templite(read_data("index.html"), self.template_globals)
|
||
|
|
|
||
|
|
skipped_covered_msg = skipped_empty_msg = ""
|
||
|
|
if self.skipped_covered_count:
|
||
|
|
n = self.skipped_covered_count
|
||
|
|
skipped_covered_msg = f"{n} file{plural(n)} skipped due to complete coverage."
|
||
|
|
if self.skipped_empty_count:
|
||
|
|
n = self.skipped_empty_count
|
||
|
|
skipped_empty_msg = f"{n} empty file{plural(n)} skipped."
|
||
|
|
|
||
|
|
html = index_tmpl.render({
|
||
|
|
"files": self.file_summaries,
|
||
|
|
"totals": self.totals,
|
||
|
|
"skipped_covered_msg": skipped_covered_msg,
|
||
|
|
"skipped_empty_msg": skipped_empty_msg,
|
||
|
|
"first_html": first_html,
|
||
|
|
"final_html": final_html,
|
||
|
|
})
|
||
|
|
|
||
|
|
index_file = os.path.join(self.directory, "index.html")
|
||
|
|
write_html(index_file, html)
|
||
|
|
|
||
|
|
print_href = stdout_link(index_file, f"file://{os.path.abspath(index_file)}")
|
||
|
|
self.coverage._message(f"Wrote HTML report to {print_href}")
|
||
|
|
|
||
|
|
# Write the latest hashes for next time.
|
||
|
|
self.incr.write()
|
||
|
|
|
||
|
|
|
||
|
|
class IncrementalChecker:
|
||
|
|
"""Logic and data to support incremental reporting."""
|
||
|
|
|
||
|
|
STATUS_FILE = "status.json"
|
||
|
|
STATUS_FORMAT = 2
|
||
|
|
|
||
|
|
# The data looks like:
|
||
|
|
#
|
||
|
|
# {
|
||
|
|
# "format": 2,
|
||
|
|
# "globals": "540ee119c15d52a68a53fe6f0897346d",
|
||
|
|
# "version": "4.0a1",
|
||
|
|
# "files": {
|
||
|
|
# "cogapp___init__": {
|
||
|
|
# "hash": "e45581a5b48f879f301c0f30bf77a50c",
|
||
|
|
# "index": {
|
||
|
|
# "html_filename": "cogapp___init__.html",
|
||
|
|
# "relative_filename": "cogapp/__init__",
|
||
|
|
# "nums": [ 1, 14, 0, 0, 0, 0, 0 ]
|
||
|
|
# }
|
||
|
|
# },
|
||
|
|
# ...
|
||
|
|
# "cogapp_whiteutils": {
|
||
|
|
# "hash": "8504bb427fc488c4176809ded0277d51",
|
||
|
|
# "index": {
|
||
|
|
# "html_filename": "cogapp_whiteutils.html",
|
||
|
|
# "relative_filename": "cogapp/whiteutils",
|
||
|
|
# "nums": [ 1, 59, 0, 1, 28, 2, 2 ]
|
||
|
|
# }
|
||
|
|
# }
|
||
|
|
# }
|
||
|
|
# }
|
||
|
|
|
||
|
|
def __init__(self, directory: str) -> None:
|
||
|
|
self.directory = directory
|
||
|
|
self.reset()
|
||
|
|
|
||
|
|
def reset(self) -> None:
|
||
|
|
"""Initialize to empty. Causes all files to be reported."""
|
||
|
|
self.globals = ""
|
||
|
|
self.files: Dict[str, FileInfoDict] = {}
|
||
|
|
|
||
|
|
def read(self) -> None:
|
||
|
|
"""Read the information we stored last time."""
|
||
|
|
usable = False
|
||
|
|
try:
|
||
|
|
status_file = os.path.join(self.directory, self.STATUS_FILE)
|
||
|
|
with open(status_file) as fstatus:
|
||
|
|
status = json.load(fstatus)
|
||
|
|
except (OSError, ValueError):
|
||
|
|
usable = False
|
||
|
|
else:
|
||
|
|
usable = True
|
||
|
|
if status["format"] != self.STATUS_FORMAT:
|
||
|
|
usable = False
|
||
|
|
elif status["version"] != coverage.__version__:
|
||
|
|
usable = False
|
||
|
|
|
||
|
|
if usable:
|
||
|
|
self.files = {}
|
||
|
|
for filename, fileinfo in status["files"].items():
|
||
|
|
fileinfo["index"]["nums"] = Numbers(*fileinfo["index"]["nums"])
|
||
|
|
self.files[filename] = fileinfo
|
||
|
|
self.globals = status["globals"]
|
||
|
|
else:
|
||
|
|
self.reset()
|
||
|
|
|
||
|
|
def write(self) -> None:
|
||
|
|
"""Write the current status."""
|
||
|
|
status_file = os.path.join(self.directory, self.STATUS_FILE)
|
||
|
|
files = {}
|
||
|
|
for filename, fileinfo in self.files.items():
|
||
|
|
index = fileinfo["index"]
|
||
|
|
index["nums"] = index["nums"].init_args() # type: ignore[typeddict-item]
|
||
|
|
files[filename] = fileinfo
|
||
|
|
|
||
|
|
status = {
|
||
|
|
"format": self.STATUS_FORMAT,
|
||
|
|
"version": coverage.__version__,
|
||
|
|
"globals": self.globals,
|
||
|
|
"files": files,
|
||
|
|
}
|
||
|
|
with open(status_file, "w") as fout:
|
||
|
|
json.dump(status, fout, separators=(",", ":"))
|
||
|
|
|
||
|
|
def check_global_data(self, *data: Any) -> None:
|
||
|
|
"""Check the global data that can affect incremental reporting."""
|
||
|
|
m = Hasher()
|
||
|
|
for d in data:
|
||
|
|
m.update(d)
|
||
|
|
these_globals = m.hexdigest()
|
||
|
|
if self.globals != these_globals:
|
||
|
|
self.reset()
|
||
|
|
self.globals = these_globals
|
||
|
|
|
||
|
|
def can_skip_file(self, data: CoverageData, fr: FileReporter, rootname: str) -> bool:
|
||
|
|
"""Can we skip reporting this file?
|
||
|
|
|
||
|
|
`data` is a CoverageData object, `fr` is a `FileReporter`, and
|
||
|
|
`rootname` is the name being used for the file.
|
||
|
|
"""
|
||
|
|
m = Hasher()
|
||
|
|
m.update(fr.source().encode("utf-8"))
|
||
|
|
add_data_to_hash(data, fr.filename, m)
|
||
|
|
this_hash = m.hexdigest()
|
||
|
|
|
||
|
|
that_hash = self.file_hash(rootname)
|
||
|
|
|
||
|
|
if this_hash == that_hash:
|
||
|
|
# Nothing has changed to require the file to be reported again.
|
||
|
|
return True
|
||
|
|
else:
|
||
|
|
self.set_file_hash(rootname, this_hash)
|
||
|
|
return False
|
||
|
|
|
||
|
|
def file_hash(self, fname: str) -> str:
|
||
|
|
"""Get the hash of `fname`'s contents."""
|
||
|
|
return self.files.get(fname, {}).get("hash", "") # type: ignore[call-overload]
|
||
|
|
|
||
|
|
def set_file_hash(self, fname: str, val: str) -> None:
|
||
|
|
"""Set the hash of `fname`'s contents."""
|
||
|
|
self.files.setdefault(fname, {})["hash"] = val # type: ignore[typeddict-item]
|
||
|
|
|
||
|
|
def index_info(self, fname: str) -> IndexInfoDict:
|
||
|
|
"""Get the information for index.html for `fname`."""
|
||
|
|
return self.files.get(fname, {}).get("index", {}) # type: ignore
|
||
|
|
|
||
|
|
def set_index_info(self, fname: str, info: IndexInfoDict) -> None:
|
||
|
|
"""Set the information for index.html for `fname`."""
|
||
|
|
self.files.setdefault(fname, {})["index"] = info # type: ignore[typeddict-item]
|
||
|
|
|
||
|
|
|
||
|
|
# Helpers for templates and generating HTML
|
||
|
|
|
||
|
|
def escape(t: str) -> str:
|
||
|
|
"""HTML-escape the text in `t`.
|
||
|
|
|
||
|
|
This is only suitable for HTML text, not attributes.
|
||
|
|
|
||
|
|
"""
|
||
|
|
# Convert HTML special chars into HTML entities.
|
||
|
|
return t.replace("&", "&").replace("<", "<")
|
||
|
|
|
||
|
|
|
||
|
|
def pair(ratio: Tuple[int, int]) -> str:
|
||
|
|
"""Format a pair of numbers so JavaScript can read them in an attribute."""
|
||
|
|
return "%s %s" % ratio
|