#!/usr/bin/env python
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__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"

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

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

test = TestSCons.TestSCons()

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: %s" % repr(sys.executable))
print("env.WhereIs('python'): %s" % repr(env.WhereIs('python')))
""")

os.environ['SCONS_ENABLE_VIRTUALENV'] = '1'

test.run(['-Q', '--ignore-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(SCons.Platform.virtualenv.IsInVirtualenv(python),
               message="env.WhereIs('python') points to virtualenv")

test.pass_test()

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