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350 lines
12 KiB
Python
350 lines
12 KiB
Python
#!/usr/bin/python -u
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import glob, os, string, sys, thread, time
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# import difflib
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import libxml2
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###
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#
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# This is a "Work in Progress" attempt at a python script to run the
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# various regression tests. The rationale for this is that it should be
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# possible to run this on most major platforms, including those (such as
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# Windows) which don't support gnu Make.
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#
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# The script is driven by a parameter file which defines the various tests
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# to be run, together with the unique settings for each of these tests. A
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# script for Linux is included (regressions.xml), with comments indicating
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# the significance of the various parameters. To run the tests under Windows,
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# edit regressions.xml and remove the comment around the default parameter
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# "<execpath>" (i.e. make it point to the location of the binary executables).
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#
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# Note that this current version requires the Python bindings for libxml2 to
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# have been previously installed and accessible
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#
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# See Copyright for the status of this software.
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# William Brack (wbrack@mmm.com.hk)
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#
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###
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defaultParams = {} # will be used as a dictionary to hold the parsed params
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# This routine is used for comparing the expected stdout / stdin with the results.
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# The expected data has already been read in; the result is a file descriptor.
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# Within the two sets of data, lines may begin with a path string. If so, the
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# code "relativises" it by removing the path component. The first argument is a
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# list already read in by a separate thread; the second is a file descriptor.
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# The two 'base' arguments are to let me "relativise" the results files, allowing
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# the script to be run from any directory.
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def compFiles(res, expected, base1, base2):
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l1 = len(base1)
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exp = expected.readlines()
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expected.close()
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# the "relativisation" is done here
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for i in range(len(res)):
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j = string.find(res[i],base1)
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if (j == 0) or ((j == 2) and (res[i][0:2] == './')):
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col = string.find(res[i],':')
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if col > 0:
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start = string.rfind(res[i][:col], '/')
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if start > 0:
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res[i] = res[i][start+1:]
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for i in range(len(exp)):
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j = string.find(exp[i],base2)
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if (j == 0) or ((j == 2) and (exp[i][0:2] == './')):
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col = string.find(exp[i],':')
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if col > 0:
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start = string.rfind(exp[i][:col], '/')
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if start > 0:
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exp[i] = exp[i][start+1:]
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ret = 0
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# ideally we would like to use difflib functions here to do a
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# nice comparison of the two sets. Unfortunately, during testing
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# (using python 2.3.3 and 2.3.4) the following code went into
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# a dead loop under windows. I'll pursue this later.
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# diff = difflib.ndiff(res, exp)
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# diff = list(diff)
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# for line in diff:
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# if line[:2] != ' ':
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# print string.strip(line)
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# ret = -1
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# the following simple compare is fine for when the two data sets
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# (actual result vs. expected result) are equal, which should be true for
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# us. Unfortunately, if the test fails it's not nice at all.
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rl = len(res)
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el = len(exp)
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if el != rl:
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print 'Length of expected is %d, result is %d' % (el, rl)
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ret = -1
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for i in range(min(el, rl)):
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if string.strip(res[i]) != string.strip(exp[i]):
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print '+:%s-:%s' % (res[i], exp[i])
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ret = -1
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if el > rl:
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for i in range(rl, el):
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print '-:%s' % exp[i]
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ret = -1
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elif rl > el:
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for i in range (el, rl):
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print '+:%s' % res[i]
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ret = -1
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return ret
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# Separate threads to handle stdout and stderr are created to run this function
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def readPfile(file, list, flag):
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data = file.readlines() # no call by reference, so I cheat
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for l in data:
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list.append(l)
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file.close()
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flag.append('ok')
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# This routine runs the test program (e.g. xmllint)
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def runOneTest(testDescription, filename, inbase, errbase):
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if 'execpath' in testDescription:
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dir = testDescription['execpath'] + '/'
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else:
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dir = ''
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cmd = os.path.abspath(dir + testDescription['testprog'])
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if 'flag' in testDescription:
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for f in string.split(testDescription['flag']):
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cmd += ' ' + f
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if 'stdin' not in testDescription:
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cmd += ' ' + inbase + filename
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if 'extarg' in testDescription:
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cmd += ' ' + testDescription['extarg']
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noResult = 0
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expout = None
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if 'resext' in testDescription:
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if testDescription['resext'] == 'None':
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noResult = 1
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else:
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ext = '.' + testDescription['resext']
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else:
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ext = ''
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if not noResult:
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try:
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fname = errbase + filename + ext
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expout = open(fname, 'rt')
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except:
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print "Can't open result file %s - bypassing test" % fname
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return
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noErrors = 0
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if 'reserrext' in testDescription:
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if testDescription['reserrext'] == 'None':
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noErrors = 1
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else:
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if len(testDescription['reserrext'])>0:
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ext = '.' + testDescription['reserrext']
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else:
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ext = ''
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else:
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ext = ''
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if not noErrors:
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try:
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fname = errbase + filename + ext
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experr = open(fname, 'rt')
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except:
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experr = None
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else:
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experr = None
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pin, pout, perr = os.popen3(cmd)
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if 'stdin' in testDescription:
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infile = open(inbase + filename, 'rt')
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pin.writelines(infile.readlines())
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infile.close()
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pin.close()
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# popen is great fun, but can lead to the old "deadly embrace", because
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# synchronizing the writing (by the task being run) of stdout and stderr
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# with respect to the reading (by this task) is basically impossible. I
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# tried several ways to cheat, but the only way I have found which works
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# is to do a *very* elementary multi-threading approach. We can only hope
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# that Python threads are implemented on the target system (it's okay for
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# Linux and Windows)
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th1Flag = [] # flags to show when threads finish
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th2Flag = []
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outfile = [] # lists to contain the pipe data
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errfile = []
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th1 = thread.start_new_thread(readPfile, (pout, outfile, th1Flag))
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th2 = thread.start_new_thread(readPfile, (perr, errfile, th2Flag))
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while (len(th1Flag)==0) or (len(th2Flag)==0):
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time.sleep(0.001)
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if not noResult:
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ret = compFiles(outfile, expout, inbase, 'test/')
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if ret != 0:
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print 'trouble with %s' % cmd
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else:
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if len(outfile) != 0:
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for l in outfile:
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print l
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print 'trouble with %s' % cmd
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if experr != None:
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ret = compFiles(errfile, experr, inbase, 'test/')
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if ret != 0:
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print 'trouble with %s' % cmd
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else:
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if not noErrors:
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if len(errfile) != 0:
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for l in errfile:
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print l
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print 'trouble with %s' % cmd
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if 'stdin' not in testDescription:
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pin.close()
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# This routine is called by the parameter decoding routine whenever the end of a
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# 'test' section is encountered. Depending upon file globbing, a large number of
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# individual tests may be run.
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def runTest(description):
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testDescription = defaultParams.copy() # set defaults
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testDescription.update(description) # override with current ent
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if 'testname' in testDescription:
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print "## %s" % testDescription['testname']
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if not 'file' in testDescription:
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print "No file specified - can't run this test!"
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return
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# Set up the source and results directory paths from the decoded params
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dir = ''
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if 'srcdir' in testDescription:
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dir += testDescription['srcdir'] + '/'
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if 'srcsub' in testDescription:
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dir += testDescription['srcsub'] + '/'
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rdir = ''
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if 'resdir' in testDescription:
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rdir += testDescription['resdir'] + '/'
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if 'ressub' in testDescription:
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rdir += testDescription['ressub'] + '/'
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testFiles = glob.glob(os.path.abspath(dir + testDescription['file']))
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if testFiles == []:
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print "No files result from '%s'" % testDescription['file']
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return
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# Some test programs just don't work (yet). For now we exclude them.
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count = 0
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excl = []
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if 'exclfile' in testDescription:
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for f in string.split(testDescription['exclfile']):
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glb = glob.glob(dir + f)
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for g in glb:
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excl.append(os.path.abspath(g))
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# Run the specified test program
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for f in testFiles:
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if not os.path.isdir(f):
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if f not in excl:
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count = count + 1
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runOneTest(testDescription, os.path.basename(f), dir, rdir)
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#
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# The following classes are used with the xmlreader interface to interpret the
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# parameter file. Once a test section has been identified, runTest is called
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# with a dictionary containing the parsed results of the interpretation.
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#
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class testDefaults:
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curText = '' # accumulates text content of parameter
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def addToDict(self, key):
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txt = string.strip(self.curText)
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# if txt == '':
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# return
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if key not in defaultParams:
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defaultParams[key] = txt
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else:
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defaultParams[key] += ' ' + txt
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def processNode(self, reader, curClass):
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if reader.Depth() == 2:
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if reader.NodeType() == 1:
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self.curText = '' # clear the working variable
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elif reader.NodeType() == 15:
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if (reader.Name() != '#text') and (reader.Name() != '#comment'):
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self.addToDict(reader.Name())
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elif reader.Depth() == 3:
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if reader.Name() == '#text':
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self.curText += reader.Value()
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elif reader.NodeType() == 15: # end of element
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print "Defaults have been set to:"
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for k in defaultParams.keys():
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print " %s : '%s'" % (k, defaultParams[k])
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curClass = rootClass()
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return curClass
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class testClass:
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def __init__(self):
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self.testParams = {} # start with an empty set of params
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self.curText = '' # and empty text
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def addToDict(self, key):
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data = string.strip(self.curText)
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if key not in self.testParams:
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self.testParams[key] = data
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else:
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if self.testParams[key] != '':
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data = ' ' + data
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self.testParams[key] += data
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def processNode(self, reader, curClass):
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if reader.Depth() == 2:
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if reader.NodeType() == 1:
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self.curText = '' # clear the working variable
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if reader.Name() not in self.testParams:
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self.testParams[reader.Name()] = ''
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elif reader.NodeType() == 15:
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if (reader.Name() != '#text') and (reader.Name() != '#comment'):
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self.addToDict(reader.Name())
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elif reader.Depth() == 3:
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if reader.Name() == '#text':
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self.curText += reader.Value()
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elif reader.NodeType() == 15: # end of element
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runTest(self.testParams)
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curClass = rootClass()
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return curClass
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class rootClass:
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def processNode(self, reader, curClass):
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if reader.Depth() == 0:
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return curClass
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if reader.Depth() != 1:
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print "Unexpected junk: Level %d, type %d, name %s" % (
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reader.Depth(), reader.NodeType(), reader.Name())
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return curClass
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if reader.Name() == 'test':
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curClass = testClass()
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curClass.testParams = {}
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elif reader.Name() == 'defaults':
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curClass = testDefaults()
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return curClass
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def streamFile(filename):
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try:
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reader = libxml2.newTextReaderFilename(filename)
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except:
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print "unable to open %s" % (filename)
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return
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curClass = rootClass()
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ret = reader.Read()
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while ret == 1:
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curClass = curClass.processNode(reader, curClass)
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ret = reader.Read()
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if ret != 0:
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print "%s : failed to parse" % (filename)
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# OK, we're finished with all the routines. Now for the main program:-
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if len(sys.argv) != 2:
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print "Usage: maketest {filename}"
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sys.exit(-1)
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streamFile(sys.argv[1])
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