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

"""
Verify that a specific snippet of backwards-compatibility code works.

"""

import TestSCons

test = TestSCons.TestSCons()

test.write('SConstruct', """

# When the 0.96.93 release introduced the env.Clone() we advertised this
# code as the correct pattern for maintaining the backwards compatibility
# of SConstruct files to earlier release of SCons.  Going forward, make
# sure it still works (or at least doesn't blow up).
import SCons.Environment
try:
    SCons.Environment.Environment.Clone
except AttributeError:
    SCons.Environment.Environment.Clone = SCons.Environment.Environment.Copy

env1 = Environment(X = 1)
env2 = env1.Clone(X = 2)

print(env1['X'])
print(env2['X'])
""")

test.run(arguments = '-q -Q', stdout = "1\n2\n")

test.pass_test()

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