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