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"""
TestSCons.py: a testing framework for the SCons software construction
tool.
A TestSCons environment object is created via the usual invocation:
test = TestSCons()
TestScons is a subclass of TestCmd, and hence has available all of its
methods and attributes, as well as any overridden or additional methods
or attributes defined in this subclass.
"""
# Copyright 2001, 2002 Steven Knight
__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
import os
import os.path
import string
import sys
import TestCmd
class TestFailed(Exception):
def __init__(self, args=None):
self.args = args
class TestNoResult(Exception):
def __init__(self, args=None):
self.args = args
if os.name == 'posix':
def _failed(self, status = 0):
if self.status is None:
return None
if os.WIFSIGNALED(status):
return None
return _status(self) != status
def _status(self):
if os.WIFEXITED(self.status):
return os.WEXITSTATUS(self.status)
else:
return None
elif os.name == 'nt':
def _failed(self, status = 0):
return not self.status is None and self.status != status
def _status(self):
return self.status
class TestSCons(TestCmd.TestCmd):
"""Class for testing SCons.
This provides a common place for initializing SCons tests,
eliminating the need to begin every test with the same repeated
initializations.
"""
def __init__(self, **kw):
"""Initialize an SCons testing object.
If they're not overridden by keyword arguments, this
initializes the object with the following default values:
program = 'scons' if it exists,
else 'scons.py'
interpreter = 'python'
match = TestCmd.match_exact
workdir = ''
The workdir value means that, by default, a temporary workspace
directory is created for a TestSCons environment. In addition,
this method changes directory (chdir) to the workspace directory,
so an explicit "chdir = '.'" on all of the run() method calls
is not necessary.
"""
if not kw.has_key('program'):
kw['program'] = os.environ.get('SCONS')
if not kw['program']:
if os.path.exists('scons'):
kw['program'] = 'scons'
else:
kw['program'] = 'scons.py'
if not kw.has_key('interpreter') and not os.environ.get('SCONS_EXEC'):
kw['interpreter'] = sys.executable
if not kw.has_key('match'):
kw['match'] = TestCmd.match_exact
if not kw.has_key('workdir'):
kw['workdir'] = ''
apply(TestCmd.TestCmd.__init__, [self], kw)
os.chdir(self.workdir)
def run(self, options = None, arguments = None,
stdout = None, stderr = '', status = 0, **kw):
"""Runs SCons.
This is the same as the base TestCmd.run() method, with
the addition of:
stdout The expected standard output from
the command. A value of None means
don't test standard output.
stderr The expected error output from
the command. A value of None means
don't test error output.
status The expected exit status from the
command.
By default, this does not test standard output (stdout = None),
and expects that error output is empty (stderr = "").
"""
if options:
arguments = options + " " + arguments
kw['arguments'] = arguments
try:
apply(TestCmd.TestCmd.run, [self], kw)
except:
print "STDOUT ============"
print self.stdout()
print "STDERR ============"
print self.stderr()
raise
if _failed(self, status):
expect = ''
if status != 0:
expect = " (expected %d)" % status
print "%s returned %d%s" % (self.program, _status(self), expect)
print "STDOUT ============"
print self.stdout()
print "STDERR ============"
print self.stderr()
raise TestFailed
if not stdout is None and not self.match(self.stdout(), stdout):
print "Expected STDOUT =========="
print stdout
print "Actual STDOUT ============"
print self.stdout()
stderr = self.stderr()
if stderr:
print "STDERR ==================="
print stderr
raise TestFailed
if not stderr is None and not self.match(self.stderr(), stderr):
print "STDOUT ==================="
print self.stdout()
print "Expected STDERR =========="
print stderr
print "Actual STDERR ============"
print self.stderr()
raise TestFailed
def wrap_stdout(self, build_str = "", read_str = ""):
"""Wraps standard output string(s) in the normal
"Reading ... done" and "Building ... done" strings
"""
return "scons: Reading SConscript files ...\n" + \
read_str + \
"scons: done reading SConscript files.\n" + \
"scons: Building targets ...\n" + \
build_str + \
"scons: done building targets.\n"
def up_to_date(self, options = None, arguments = None, **kw):
s = ""
for arg in string.split(arguments):
s = s + 'scons: "%s" is up to date.\n' % arg
if options:
arguments = options + " " + arguments
kw['arguments'] = arguments
kw['stdout'] = self.wrap_stdout(build_str = s)
apply(self.run, [], kw)
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