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diff --git a/src/engine/SCons/Node/PythonTests.py b/src/engine/SCons/Node/PythonTests.py
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+#
+# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 The SCons Foundation
+#
+# 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__ = "src/engine/SCons/Node/PythonTests.py 4577 2009/12/27 19:44:43 scons"
+
+import sys
+import unittest
+
+import SCons.Errors
+import SCons.Node.Python
+
+class ValueTestCase(unittest.TestCase):
+
+ def test_Value(self):
+ """Test creating a Value() object
+ """
+ v1 = SCons.Node.Python.Value('a')
+ assert v1.value == 'a', v1.value
+
+ value2 = 'a'
+ v2 = SCons.Node.Python.Value(value2)
+ assert v2.value == value2, v2.value
+ assert v2.value is value2, v2.value
+
+ assert not v1 is v2
+ assert v1.value == v2.value
+
+ v3 = SCons.Node.Python.Value('c', 'cb')
+ assert v3.built_value == 'cb'
+
+ def test_build(self):
+ """Test "building" a Value Node
+ """
+ class fake_executor:
+ def __call__(self, node):
+ node.write('faked')
+
+ v1 = SCons.Node.Python.Value('b', 'built')
+ v1.executor = fake_executor()
+ v1.build()
+ assert v1.built_value == 'built', v1.built_value
+
+ v2 = SCons.Node.Python.Value('b')
+ v2.executor = fake_executor()
+ v2.build()
+ assert v2.built_value == 'faked', v2.built_value
+
+ def test_read(self):
+ """Test the Value.read() method
+ """
+ v1 = SCons.Node.Python.Value('a')
+ x = v1.read()
+ assert x == 'a', x
+
+ def test_write(self):
+ """Test the Value.write() method
+ """
+ v1 = SCons.Node.Python.Value('a')
+ assert v1.value == 'a', v1.value
+ assert not hasattr(v1, 'built_value')
+
+ v1.write('new')
+ assert v1.value == 'a', v1.value
+ assert v1.built_value == 'new', v1.built_value
+
+ def test_get_csig(self):
+ """Test calculating the content signature of a Value() object
+ """
+ v1 = SCons.Node.Python.Value('aaa')
+ csig = v1.get_csig(None)
+ assert csig == 'aaa', csig
+
+ v2 = SCons.Node.Python.Value(7)
+ csig = v2.get_csig(None)
+ assert csig == '7', csig
+
+ v3 = SCons.Node.Python.Value(None)
+ csig = v3.get_csig(None)
+ assert csig == 'None', csig
+
+class ValueNodeInfoTestCase(unittest.TestCase):
+ def test___init__(self):
+ """Test ValueNodeInfo initialization"""
+ vvv = SCons.Node.Python.Value('vvv')
+ ni = SCons.Node.Python.ValueNodeInfo(vvv)
+
+class ValueBuildInfoTestCase(unittest.TestCase):
+ def test___init__(self):
+ """Test ValueBuildInfo initialization"""
+ vvv = SCons.Node.Python.Value('vvv')
+ bi = SCons.Node.Python.ValueBuildInfo(vvv)
+
+if __name__ == "__main__":
+ suite = unittest.TestSuite()
+ tclasses = [
+ ValueTestCase,
+ ValueBuildInfoTestCase,
+ ValueNodeInfoTestCase,
+ ]
+ for tclass in tclasses:
+ names = unittest.getTestCaseNames(tclass, 'test_')
+ suite.addTests(map(tclass, names))
+ if not unittest.TextTestRunner().run(suite).wasSuccessful():
+ sys.exit(1)
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4: