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#!/usr/bin/env python
#
# __COPYRIGHT__
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#

__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"

"""
Ensure that the --enable-virtualenv flag works.
"""

import TestSCons
import SCons.Platform.virtualenv
import sys
import os
import re

test = TestSCons.TestSCons()

if SCons.Platform.virtualenv.virtualenv_enabled_by_default:
    test.skip_test("Virtualenv support enabled by default, the option --enable-virtualenv is unavailable, skipping\n")

if not SCons.Platform.virtualenv.Virtualenv():
    test.skip_test("No virtualenv detected, skipping\n")

if not SCons.Platform.virtualenv.select_paths_in_venv(os.getenv('PATH','')):
    test.skip_test("Virtualenv detected but looks like unactivated, skipping\n")

test.write('SConstruct', """
import sys
import SCons.Platform.virtualenv
env = DefaultEnvironment(tools=[])
print("sys.executable: %r" % sys.executable)
print("env.WhereIs('python'): %r" % env.WhereIs('python'))
""")

test.run(['-Q', '--enable-virtualenv'])
s = test.stdout()
m = re.search(r"""^sys\.executable:\s*(?P<py>["'][^"']+["'])\s*$""", s, re.MULTILINE)
if not m:
    test.fail_test(message="""\
can't determine sys.executable from stdout:
========= STDOUT =========
%s
==========================
""" % s)

interpreter = eval(m.group('py'))

m = re.search(r"""^\s*env.WhereIs\('python'\):\s*(?P<py>["']?[^"']+["']?)\s*$""", s, re.MULTILINE)
if not m:
    test.fail_test(message="""
can't determine env.WhereIs('python') from stdout:
========= STDOUT =========
%s
==========================
""" % s)

python = eval(m.group('py'))

test.fail_test(not SCons.Platform.virtualenv.IsInVirtualenv(interpreter),
               message="sys.executable points outside of virtualenv")
test.fail_test(not SCons.Platform.virtualenv.IsInVirtualenv(python),
               message="env.WhereIs('python') points to virtualenv")

test.pass_test()

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# indent-tabs-mode:nil
# End:
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