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117eeb7f84
The current code wraps a pre tag inside an a tag. For some reason, this causes at least Firefox to attempt to drag the pre section content when using a mouse drag to select text. Re-order the tags so that the text can be selected using the mouse, at least if you start the drag outside the text (after the end of the line, for example). Signed-off-by: Stephen Warren <swarren@nvidia.com>
638 lines
19 KiB
Python
638 lines
19 KiB
Python
# Copyright (c) 2015 Stephen Warren
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# Copyright (c) 2015-2016, NVIDIA CORPORATION. All rights reserved.
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#
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# SPDX-License-Identifier: GPL-2.0
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# Generate an HTML-formatted log file containing multiple streams of data,
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# each represented in a well-delineated/-structured fashion.
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import cgi
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import os.path
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import shutil
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import subprocess
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mod_dir = os.path.dirname(os.path.abspath(__file__))
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class LogfileStream(object):
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"""A file-like object used to write a single logical stream of data into
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a multiplexed log file. Objects of this type should be created by factory
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functions in the Logfile class rather than directly."""
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def __init__(self, logfile, name, chained_file):
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"""Initialize a new object.
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Args:
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logfile: The Logfile object to log to.
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name: The name of this log stream.
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chained_file: The file-like object to which all stream data should be
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logged to in addition to logfile. Can be None.
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Returns:
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Nothing.
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"""
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self.logfile = logfile
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self.name = name
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self.chained_file = chained_file
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def close(self):
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"""Dummy function so that this class is "file-like".
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Args:
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None.
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Returns:
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Nothing.
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"""
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pass
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def write(self, data, implicit=False):
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"""Write data to the log stream.
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Args:
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data: The data to write tot he file.
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implicit: Boolean indicating whether data actually appeared in the
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stream, or was implicitly generated. A valid use-case is to
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repeat a shell prompt at the start of each separate log
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section, which makes the log sections more readable in
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isolation.
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Returns:
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Nothing.
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"""
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self.logfile.write(self, data, implicit)
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if self.chained_file:
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self.chained_file.write(data)
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def flush(self):
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"""Flush the log stream, to ensure correct log interleaving.
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Args:
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None.
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Returns:
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Nothing.
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"""
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self.logfile.flush()
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if self.chained_file:
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self.chained_file.flush()
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class RunAndLog(object):
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"""A utility object used to execute sub-processes and log their output to
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a multiplexed log file. Objects of this type should be created by factory
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functions in the Logfile class rather than directly."""
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def __init__(self, logfile, name, chained_file):
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"""Initialize a new object.
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Args:
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logfile: The Logfile object to log to.
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name: The name of this log stream or sub-process.
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chained_file: The file-like object to which all stream data should
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be logged to in addition to logfile. Can be None.
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Returns:
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Nothing.
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"""
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self.logfile = logfile
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self.name = name
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self.chained_file = chained_file
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self.output = None
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self.exit_status = None
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def close(self):
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"""Clean up any resources managed by this object."""
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pass
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def run(self, cmd, cwd=None, ignore_errors=False):
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"""Run a command as a sub-process, and log the results.
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The output is available at self.output which can be useful if there is
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an exception.
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Args:
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cmd: The command to execute.
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cwd: The directory to run the command in. Can be None to use the
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current directory.
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ignore_errors: Indicate whether to ignore errors. If True, the
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function will simply return if the command cannot be executed
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or exits with an error code, otherwise an exception will be
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raised if such problems occur.
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Returns:
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The output as a string.
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"""
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msg = '+' + ' '.join(cmd) + '\n'
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if self.chained_file:
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self.chained_file.write(msg)
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self.logfile.write(self, msg)
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try:
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p = subprocess.Popen(cmd, cwd=cwd,
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stdin=None, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
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(stdout, stderr) = p.communicate()
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output = ''
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if stdout:
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if stderr:
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output += 'stdout:\n'
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output += stdout
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if stderr:
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if stdout:
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output += 'stderr:\n'
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output += stderr
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exit_status = p.returncode
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exception = None
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except subprocess.CalledProcessError as cpe:
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output = cpe.output
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exit_status = cpe.returncode
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exception = cpe
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except Exception as e:
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output = ''
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exit_status = 0
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exception = e
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if output and not output.endswith('\n'):
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output += '\n'
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if exit_status and not exception and not ignore_errors:
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exception = Exception('Exit code: ' + str(exit_status))
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if exception:
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output += str(exception) + '\n'
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self.logfile.write(self, output)
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if self.chained_file:
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self.chained_file.write(output)
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# Store the output so it can be accessed if we raise an exception.
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self.output = output
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self.exit_status = exit_status
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if exception:
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raise exception
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return output
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class SectionCtxMgr(object):
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"""A context manager for Python's "with" statement, which allows a certain
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portion of test code to be logged to a separate section of the log file.
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Objects of this type should be created by factory functions in the Logfile
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class rather than directly."""
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def __init__(self, log, marker, anchor):
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"""Initialize a new object.
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Args:
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log: The Logfile object to log to.
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marker: The name of the nested log section.
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anchor: The anchor value to pass to start_section().
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Returns:
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Nothing.
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"""
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self.log = log
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self.marker = marker
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self.anchor = anchor
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def __enter__(self):
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self.anchor = self.log.start_section(self.marker, self.anchor)
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def __exit__(self, extype, value, traceback):
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self.log.end_section(self.marker)
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class Logfile(object):
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"""Generates an HTML-formatted log file containing multiple streams of
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data, each represented in a well-delineated/-structured fashion."""
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def __init__(self, fn):
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"""Initialize a new object.
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Args:
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fn: The filename to write to.
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Returns:
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Nothing.
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"""
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self.f = open(fn, 'wt')
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self.last_stream = None
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self.blocks = []
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self.cur_evt = 1
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self.anchor = 0
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shutil.copy(mod_dir + '/multiplexed_log.css', os.path.dirname(fn))
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self.f.write('''\
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<html>
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<head>
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<link rel="stylesheet" type="text/css" href="multiplexed_log.css">
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<script src="http://code.jquery.com/jquery.min.js"></script>
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<script>
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$(document).ready(function () {
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// Copy status report HTML to start of log for easy access
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sts = $(".block#status_report")[0].outerHTML;
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$("tt").prepend(sts);
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// Add expand/contract buttons to all block headers
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btns = "<span class=\\\"block-expand hidden\\\">[+] </span>" +
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"<span class=\\\"block-contract\\\">[-] </span>";
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$(".block-header").prepend(btns);
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// Pre-contract all blocks which passed, leaving only problem cases
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// expanded, to highlight issues the user should look at.
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// Only top-level blocks (sections) should have any status
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passed_bcs = $(".block-content:has(.status-pass)");
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// Some blocks might have multiple status entries (e.g. the status
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// report), so take care not to hide blocks with partial success.
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passed_bcs = passed_bcs.not(":has(.status-fail)");
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passed_bcs = passed_bcs.not(":has(.status-xfail)");
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passed_bcs = passed_bcs.not(":has(.status-xpass)");
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passed_bcs = passed_bcs.not(":has(.status-skipped)");
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// Hide the passed blocks
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passed_bcs.addClass("hidden");
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// Flip the expand/contract button hiding for those blocks.
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bhs = passed_bcs.parent().children(".block-header")
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bhs.children(".block-expand").removeClass("hidden");
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bhs.children(".block-contract").addClass("hidden");
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// Add click handler to block headers.
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// The handler expands/contracts the block.
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$(".block-header").on("click", function (e) {
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var header = $(this);
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var content = header.next(".block-content");
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var expanded = !content.hasClass("hidden");
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if (expanded) {
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content.addClass("hidden");
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header.children(".block-expand").first().removeClass("hidden");
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header.children(".block-contract").first().addClass("hidden");
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} else {
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header.children(".block-contract").first().removeClass("hidden");
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header.children(".block-expand").first().addClass("hidden");
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content.removeClass("hidden");
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}
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});
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// When clicking on a link, expand the target block
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$("a").on("click", function (e) {
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var block = $($(this).attr("href"));
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var header = block.children(".block-header");
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var content = block.children(".block-content").first();
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header.children(".block-contract").first().removeClass("hidden");
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header.children(".block-expand").first().addClass("hidden");
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content.removeClass("hidden");
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});
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});
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</script>
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</head>
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<body>
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<tt>
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''')
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def close(self):
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"""Close the log file.
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After calling this function, no more data may be written to the log.
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Args:
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None.
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Returns:
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Nothing.
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"""
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self.f.write('''\
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</tt>
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</body>
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</html>
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''')
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self.f.close()
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# The set of characters that should be represented as hexadecimal codes in
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# the log file.
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_nonprint = ('%' + ''.join(chr(c) for c in range(0, 32) if c not in (9, 10)) +
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''.join(chr(c) for c in range(127, 256)))
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def _escape(self, data):
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"""Render data format suitable for inclusion in an HTML document.
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This includes HTML-escaping certain characters, and translating
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control characters to a hexadecimal representation.
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Args:
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data: The raw string data to be escaped.
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Returns:
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An escaped version of the data.
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"""
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data = data.replace(chr(13), '')
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data = ''.join((c in self._nonprint) and ('%%%02x' % ord(c)) or
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c for c in data)
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data = cgi.escape(data)
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return data
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def _terminate_stream(self):
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"""Write HTML to the log file to terminate the current stream's data.
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Args:
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None.
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Returns:
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Nothing.
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"""
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self.cur_evt += 1
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if not self.last_stream:
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return
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self.f.write('</pre>\n')
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self.f.write('<div class="stream-trailer block-trailer">End stream: ' +
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self.last_stream.name + '</div>\n')
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self.f.write('</div>\n')
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self.f.write('</div>\n')
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self.last_stream = None
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def _note(self, note_type, msg, anchor=None):
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"""Write a note or one-off message to the log file.
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Args:
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note_type: The type of note. This must be a value supported by the
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accompanying multiplexed_log.css.
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msg: The note/message to log.
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anchor: Optional internal link target.
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Returns:
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Nothing.
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"""
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self._terminate_stream()
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self.f.write('<div class="' + note_type + '">\n')
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self.f.write('<pre>')
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if anchor:
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self.f.write('<a href="#%s">' % anchor)
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self.f.write(self._escape(msg))
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if anchor:
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self.f.write('</a>')
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self.f.write('\n</pre>\n')
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self.f.write('</div>\n')
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def start_section(self, marker, anchor=None):
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"""Begin a new nested section in the log file.
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Args:
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marker: The name of the section that is starting.
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anchor: The value to use for the anchor. If None, a unique value
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will be calculated and used
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Returns:
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Name of the HTML anchor emitted before section.
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"""
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self._terminate_stream()
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self.blocks.append(marker)
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if not anchor:
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self.anchor += 1
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anchor = str(self.anchor)
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blk_path = '/'.join(self.blocks)
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self.f.write('<div class="section block" id="' + anchor + '">\n')
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self.f.write('<div class="section-header block-header">Section: ' +
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blk_path + '</div>\n')
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self.f.write('<div class="section-content block-content">\n')
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return anchor
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def end_section(self, marker):
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"""Terminate the current nested section in the log file.
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This function validates proper nesting of start_section() and
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end_section() calls. If a mismatch is found, an exception is raised.
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Args:
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marker: The name of the section that is ending.
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Returns:
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Nothing.
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"""
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if (not self.blocks) or (marker != self.blocks[-1]):
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raise Exception('Block nesting mismatch: "%s" "%s"' %
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(marker, '/'.join(self.blocks)))
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self._terminate_stream()
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blk_path = '/'.join(self.blocks)
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self.f.write('<div class="section-trailer block-trailer">' +
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'End section: ' + blk_path + '</div>\n')
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self.f.write('</div>\n')
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self.f.write('</div>\n')
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self.blocks.pop()
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def section(self, marker, anchor=None):
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"""Create a temporary section in the log file.
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This function creates a context manager for Python's "with" statement,
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which allows a certain portion of test code to be logged to a separate
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section of the log file.
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Usage:
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with log.section("somename"):
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some test code
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Args:
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marker: The name of the nested section.
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anchor: The anchor value to pass to start_section().
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Returns:
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A context manager object.
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"""
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return SectionCtxMgr(self, marker, anchor)
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def error(self, msg):
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"""Write an error note to the log file.
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Args:
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msg: A message describing the error.
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Returns:
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Nothing.
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"""
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self._note("error", msg)
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def warning(self, msg):
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"""Write an warning note to the log file.
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Args:
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msg: A message describing the warning.
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Returns:
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Nothing.
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"""
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self._note("warning", msg)
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def info(self, msg):
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"""Write an informational note to the log file.
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Args:
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msg: An informational message.
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Returns:
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Nothing.
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"""
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self._note("info", msg)
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def action(self, msg):
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"""Write an action note to the log file.
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Args:
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msg: A message describing the action that is being logged.
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Returns:
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Nothing.
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"""
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self._note("action", msg)
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def status_pass(self, msg, anchor=None):
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"""Write a note to the log file describing test(s) which passed.
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Args:
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msg: A message describing the passed test(s).
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anchor: Optional internal link target.
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Returns:
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Nothing.
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"""
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self._note("status-pass", msg, anchor)
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def status_skipped(self, msg, anchor=None):
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"""Write a note to the log file describing skipped test(s).
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Args:
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msg: A message describing the skipped test(s).
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anchor: Optional internal link target.
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Returns:
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Nothing.
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"""
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self._note("status-skipped", msg, anchor)
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def status_xfail(self, msg, anchor=None):
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"""Write a note to the log file describing xfailed test(s).
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Args:
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msg: A message describing the xfailed test(s).
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anchor: Optional internal link target.
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Returns:
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Nothing.
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"""
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self._note("status-xfail", msg, anchor)
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def status_xpass(self, msg, anchor=None):
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"""Write a note to the log file describing xpassed test(s).
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Args:
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msg: A message describing the xpassed test(s).
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anchor: Optional internal link target.
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Returns:
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Nothing.
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"""
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self._note("status-xpass", msg, anchor)
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def status_fail(self, msg, anchor=None):
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"""Write a note to the log file describing failed test(s).
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Args:
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msg: A message describing the failed test(s).
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anchor: Optional internal link target.
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Returns:
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Nothing.
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"""
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self._note("status-fail", msg, anchor)
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def get_stream(self, name, chained_file=None):
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"""Create an object to log a single stream's data into the log file.
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This creates a "file-like" object that can be written to in order to
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write a single stream's data to the log file. The implementation will
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handle any required interleaving of data (from multiple streams) in
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the log, in a way that makes it obvious which stream each bit of data
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came from.
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Args:
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name: The name of the stream.
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chained_file: The file-like object to which all stream data should
|
|
be logged to in addition to this log. Can be None.
|
|
|
|
Returns:
|
|
A file-like object.
|
|
"""
|
|
|
|
return LogfileStream(self, name, chained_file)
|
|
|
|
def get_runner(self, name, chained_file=None):
|
|
"""Create an object that executes processes and logs their output.
|
|
|
|
Args:
|
|
name: The name of this sub-process.
|
|
chained_file: The file-like object to which all stream data should
|
|
be logged to in addition to logfile. Can be None.
|
|
|
|
Returns:
|
|
A RunAndLog object.
|
|
"""
|
|
|
|
return RunAndLog(self, name, chained_file)
|
|
|
|
def write(self, stream, data, implicit=False):
|
|
"""Write stream data into the log file.
|
|
|
|
This function should only be used by instances of LogfileStream or
|
|
RunAndLog.
|
|
|
|
Args:
|
|
stream: The stream whose data is being logged.
|
|
data: The data to log.
|
|
implicit: Boolean indicating whether data actually appeared in the
|
|
stream, or was implicitly generated. A valid use-case is to
|
|
repeat a shell prompt at the start of each separate log
|
|
section, which makes the log sections more readable in
|
|
isolation.
|
|
|
|
Returns:
|
|
Nothing.
|
|
"""
|
|
|
|
if stream != self.last_stream:
|
|
self._terminate_stream()
|
|
self.f.write('<div class="stream block">\n')
|
|
self.f.write('<div class="stream-header block-header">Stream: ' +
|
|
stream.name + '</div>\n')
|
|
self.f.write('<div class="stream-content block-content">\n')
|
|
self.f.write('<pre>')
|
|
if implicit:
|
|
self.f.write('<span class="implicit">')
|
|
self.f.write(self._escape(data))
|
|
if implicit:
|
|
self.f.write('</span>')
|
|
self.last_stream = stream
|
|
|
|
def flush(self):
|
|
"""Flush the log stream, to ensure correct log interleaving.
|
|
|
|
Args:
|
|
None.
|
|
|
|
Returns:
|
|
Nothing.
|
|
"""
|
|
|
|
self.f.flush()
|