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issue2551026: template variable not defined even though it is. Fix issue where variables defined in TAL expression are not available in the scope of the definition. (Tom Ekberg (tekberg))
author John Rouillard <rouilj@ieee.org>
date Tue, 26 Mar 2019 17:31:28 -0400
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5676
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1 """
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2 In Python 3, sometimes TAL "python:" expressions that refer to
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3 variables but not all variables are recognized. That is in Python 2.7
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4 all variables used in a TAL "python:" expression are recognized as
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5 references. In Python 3.5 (perhaps earlier), some TAL "python:"
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6 expressions refer to variables but the reference generates an error
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7 like this:
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8
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9 <class 'NameError'>: name 'some_tal_variable' is not defined
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10
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11 even when the variable is defined. Output after this message lists the
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12 variable and its value.
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13 """
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14
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15 import unittest
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16
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17 from roundup.cgi.PageTemplates.PythonExpr import PythonExpr as PythonExprClass
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18
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19 class ExprTest(unittest.TestCase):
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20 def testExpr(self):
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21 expr = '[x for x in context.assignedto ' \
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22 'if x.realname not in user_realnames]'
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23 pe = PythonExprClass('test', expr, None)
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24 # Looking at the expression, only context and user_realnames are
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25 # external variables. The names assignedto and realname are members,
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26 # and x is local.
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27 required_names = ['context', 'user_realnames']
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28 got_names = pe._f_varnames
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29 for required_name in required_names:
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30 self.assertIn(required_name, got_names)
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