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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 TestCmd
class TestFailed(Exception):
def __init__(self, args=None):
self.args = args
class TestNoResult(Exception):
def __init__(self, args=None):
self.args = args
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'):
if os.path.exists('scons'):
kw['program'] = 'scons'
else:
kw['program'] = 'scons.py'
if not kw.has_key('interpreter'):
kw['interpreter'] = 'python'
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, stdout = None, stderr = '', **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.
By default, this does not test standard output (stdout = None),
and expects that error output is empty (stderr = "").
"""
try:
apply(TestCmd.TestCmd.run, [self], kw)
except:
print "STDOUT ============"
print self.stdout()
print "STDERR ============"
print self.stderr()
raise
if self.status:
print "%s returned %d" % (self.program, self.status >> 8)
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 "Expected STDERR =========="
print stderr
print "Actual STDERR ============"
print self.stderr()
print "STDOUT ==================="
print self.stdout()
raise TestFailed
def up_to_date(self, arguments = None, **kw):
kw['arguments'] = arguments
s = ""
for arg in string.split(arguments):
s = s + 'scons: "%s" is up to date.\n' % arg
kw['stdout'] = s
apply(self.run, [], kw)
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