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392 lines
11 KiB
392 lines
11 KiB
6 years ago
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"""Code-coverage tools for CherryPy.
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To use this module, or the coverage tools in the test suite,
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you need to download 'coverage.py', either Gareth Rees' `original
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implementation <http://www.garethrees.org/2001/12/04/python-coverage/>`_
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or Ned Batchelder's `enhanced version:
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<http://www.nedbatchelder.com/code/modules/coverage.html>`_
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To turn on coverage tracing, use the following code::
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cherrypy.engine.subscribe('start', covercp.start)
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DO NOT subscribe anything on the 'start_thread' channel, as previously
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recommended. Calling start once in the main thread should be sufficient
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to start coverage on all threads. Calling start again in each thread
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effectively clears any coverage data gathered up to that point.
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Run your code, then use the ``covercp.serve()`` function to browse the
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results in a web browser. If you run this module from the command line,
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it will call ``serve()`` for you.
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"""
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import re
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import sys
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import cgi
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import os
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import os.path
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import cherrypy
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from cherrypy._cpcompat import quote_plus
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localFile = os.path.join(os.path.dirname(__file__), 'coverage.cache')
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the_coverage = None
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try:
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from coverage import coverage
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the_coverage = coverage(data_file=localFile)
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def start():
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the_coverage.start()
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except ImportError:
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# Setting the_coverage to None will raise errors
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# that need to be trapped downstream.
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the_coverage = None
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import warnings
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warnings.warn(
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'No code coverage will be performed; '
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'coverage.py could not be imported.')
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def start():
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pass
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start.priority = 20
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TEMPLATE_MENU = """<html>
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<head>
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<title>CherryPy Coverage Menu</title>
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<style>
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body {font: 9pt Arial, serif;}
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#tree {
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font-size: 8pt;
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font-family: Andale Mono, monospace;
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white-space: pre;
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}
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#tree a:active, a:focus {
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background-color: black;
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padding: 1px;
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color: white;
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border: 0px solid #9999FF;
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-moz-outline-style: none;
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}
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.fail { color: red;}
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.pass { color: #888;}
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#pct { text-align: right;}
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h3 {
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font-size: small;
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font-weight: bold;
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font-style: italic;
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margin-top: 5px;
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}
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input { border: 1px solid #ccc; padding: 2px; }
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.directory {
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color: #933;
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font-style: italic;
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font-weight: bold;
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font-size: 10pt;
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}
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.file {
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color: #400;
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}
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a { text-decoration: none; }
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#crumbs {
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color: white;
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font-size: 8pt;
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font-family: Andale Mono, monospace;
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width: 100%;
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background-color: black;
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}
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#crumbs a {
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color: #f88;
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}
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#options {
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line-height: 2.3em;
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border: 1px solid black;
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background-color: #eee;
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padding: 4px;
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}
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#exclude {
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width: 100%;
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margin-bottom: 3px;
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border: 1px solid #999;
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}
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#submit {
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background-color: black;
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color: white;
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border: 0;
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margin-bottom: -9px;
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}
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</style>
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</head>
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<body>
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<h2>CherryPy Coverage</h2>"""
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TEMPLATE_FORM = """
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<div id="options">
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<form action='menu' method=GET>
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<input type='hidden' name='base' value='%(base)s' />
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Show percentages
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<input type='checkbox' %(showpct)s name='showpct' value='checked' /><br />
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Hide files over
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<input type='text' id='pct' name='pct' value='%(pct)s' size='3' />%%<br />
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Exclude files matching<br />
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<input type='text' id='exclude' name='exclude'
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value='%(exclude)s' size='20' />
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<br />
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<input type='submit' value='Change view' id="submit"/>
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</form>
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</div>"""
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TEMPLATE_FRAMESET = """<html>
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<head><title>CherryPy coverage data</title></head>
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<frameset cols='250, 1*'>
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<frame src='menu?base=%s' />
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<frame name='main' src='' />
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</frameset>
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</html>
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"""
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TEMPLATE_COVERAGE = """<html>
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<head>
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<title>Coverage for %(name)s</title>
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<style>
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h2 { margin-bottom: .25em; }
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p { margin: .25em; }
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.covered { color: #000; background-color: #fff; }
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.notcovered { color: #fee; background-color: #500; }
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.excluded { color: #00f; background-color: #fff; }
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table .covered, table .notcovered, table .excluded
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{ font-family: Andale Mono, monospace;
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font-size: 10pt; white-space: pre; }
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.lineno { background-color: #eee;}
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.notcovered .lineno { background-color: #000;}
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table { border-collapse: collapse;
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</style>
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</head>
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<body>
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<h2>%(name)s</h2>
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<p>%(fullpath)s</p>
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<p>Coverage: %(pc)s%%</p>"""
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TEMPLATE_LOC_COVERED = """<tr class="covered">
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<td class="lineno">%s </td>
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<td>%s</td>
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</tr>\n"""
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TEMPLATE_LOC_NOT_COVERED = """<tr class="notcovered">
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<td class="lineno">%s </td>
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<td>%s</td>
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</tr>\n"""
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TEMPLATE_LOC_EXCLUDED = """<tr class="excluded">
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<td class="lineno">%s </td>
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<td>%s</td>
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</tr>\n"""
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TEMPLATE_ITEM = (
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"%s%s<a class='file' href='report?name=%s' target='main'>%s</a>\n"
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)
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def _percent(statements, missing):
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s = len(statements)
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e = s - len(missing)
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if s > 0:
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return int(round(100.0 * e / s))
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return 0
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def _show_branch(root, base, path, pct=0, showpct=False, exclude='',
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coverage=the_coverage):
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# Show the directory name and any of our children
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dirs = [k for k, v in root.items() if v]
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dirs.sort()
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for name in dirs:
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newpath = os.path.join(path, name)
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if newpath.lower().startswith(base):
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relpath = newpath[len(base):]
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yield '| ' * relpath.count(os.sep)
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yield (
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"<a class='directory' "
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"href='menu?base=%s&exclude=%s'>%s</a>\n" %
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(newpath, quote_plus(exclude), name)
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)
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for chunk in _show_branch(
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root[name], base, newpath, pct, showpct,
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exclude, coverage=coverage
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):
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yield chunk
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# Now list the files
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if path.lower().startswith(base):
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relpath = path[len(base):]
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files = [k for k, v in root.items() if not v]
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files.sort()
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for name in files:
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newpath = os.path.join(path, name)
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pc_str = ''
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if showpct:
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try:
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_, statements, _, missing, _ = coverage.analysis2(newpath)
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except:
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# Yes, we really want to pass on all errors.
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pass
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else:
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pc = _percent(statements, missing)
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pc_str = ('%3d%% ' % pc).replace(' ', ' ')
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if pc < float(pct) or pc == -1:
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pc_str = "<span class='fail'>%s</span>" % pc_str
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else:
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pc_str = "<span class='pass'>%s</span>" % pc_str
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yield TEMPLATE_ITEM % ('| ' * (relpath.count(os.sep) + 1),
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pc_str, newpath, name)
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def _skip_file(path, exclude):
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if exclude:
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return bool(re.search(exclude, path))
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def _graft(path, tree):
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d = tree
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p = path
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atoms = []
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while True:
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p, tail = os.path.split(p)
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if not tail:
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break
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atoms.append(tail)
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atoms.append(p)
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if p != '/':
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atoms.append('/')
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atoms.reverse()
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for node in atoms:
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if node:
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d = d.setdefault(node, {})
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def get_tree(base, exclude, coverage=the_coverage):
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"""Return covered module names as a nested dict."""
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tree = {}
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runs = coverage.data.executed_files()
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for path in runs:
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if not _skip_file(path, exclude) and not os.path.isdir(path):
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_graft(path, tree)
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return tree
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class CoverStats(object):
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def __init__(self, coverage, root=None):
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self.coverage = coverage
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if root is None:
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# Guess initial depth. Files outside this path will not be
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# reachable from the web interface.
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import cherrypy
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root = os.path.dirname(cherrypy.__file__)
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self.root = root
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@cherrypy.expose
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def index(self):
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return TEMPLATE_FRAMESET % self.root.lower()
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@cherrypy.expose
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def menu(self, base='/', pct='50', showpct='',
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exclude=r'python\d\.\d|test|tut\d|tutorial'):
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# The coverage module uses all-lower-case names.
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base = base.lower().rstrip(os.sep)
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yield TEMPLATE_MENU
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yield TEMPLATE_FORM % locals()
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# Start by showing links for parent paths
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yield "<div id='crumbs'>"
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path = ''
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atoms = base.split(os.sep)
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atoms.pop()
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for atom in atoms:
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path += atom + os.sep
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yield ("<a href='menu?base=%s&exclude=%s'>%s</a> %s"
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% (path, quote_plus(exclude), atom, os.sep))
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yield '</div>'
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yield "<div id='tree'>"
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# Then display the tree
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tree = get_tree(base, exclude, self.coverage)
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if not tree:
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yield '<p>No modules covered.</p>'
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else:
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for chunk in _show_branch(tree, base, '/', pct,
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showpct == 'checked', exclude,
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coverage=self.coverage):
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yield chunk
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yield '</div>'
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yield '</body></html>'
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def annotated_file(self, filename, statements, excluded, missing):
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source = open(filename, 'r')
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buffer = []
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for lineno, line in enumerate(source.readlines()):
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lineno += 1
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line = line.strip('\n\r')
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empty_the_buffer = True
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if lineno in excluded:
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template = TEMPLATE_LOC_EXCLUDED
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elif lineno in missing:
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template = TEMPLATE_LOC_NOT_COVERED
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elif lineno in statements:
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template = TEMPLATE_LOC_COVERED
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else:
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empty_the_buffer = False
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buffer.append((lineno, line))
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if empty_the_buffer:
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for lno, pastline in buffer:
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yield template % (lno, cgi.escape(pastline))
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buffer = []
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yield template % (lineno, cgi.escape(line))
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@cherrypy.expose
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def report(self, name):
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filename, statements, excluded, missing, _ = self.coverage.analysis2(
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name)
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pc = _percent(statements, missing)
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yield TEMPLATE_COVERAGE % dict(name=os.path.basename(name),
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fullpath=name,
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pc=pc)
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yield '<table>\n'
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for line in self.annotated_file(filename, statements, excluded,
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missing):
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yield line
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yield '</table>'
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yield '</body>'
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yield '</html>'
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def serve(path=localFile, port=8080, root=None):
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if coverage is None:
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raise ImportError('The coverage module could not be imported.')
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from coverage import coverage
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cov = coverage(data_file=path)
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cov.load()
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import cherrypy
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cherrypy.config.update({'server.socket_port': int(port),
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'server.thread_pool': 10,
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'environment': 'production',
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})
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cherrypy.quickstart(CoverStats(cov, root))
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||
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if __name__ == '__main__':
|
||
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|
serve(*tuple(sys.argv[1:]))
|