[Zope-CVS] CVS: Packages/ZConfig/tests - testInterp.py:1.1

[Fred L. Drake, Jr.]

Update of /cvs-repository/Packages/ZConfig/tests
In directory cvs.zope.org:/tmp/cvs-serv28850/tests

Added Files:
	testInterp.py 
Log Message:
Add string interpolation utility to ZConfig.  Not entirely sure how it will
be integrated API-wise yet.


=== Added File Packages/ZConfig/tests/testInterp.py ===
"""Tests of the string interpolation module."""

import unittest

from ZConfig.Interpolation import interpolate, InterpolationSyntaxError


class InterpolationTestCase(unittest.TestCase):
    def test_simple_names(self):
        d = {"name": "value",
             "name1": "abc",
             "name_": "def",
             "_123": "ghi"}
        def check(s, v):
            self.assertEqual(interpolate(s, d), v)
        check("$name", "value")
        check(" $name ", " value ")
        check("${name}", "value")
        check(" ${name} ", " value ")
        check("$name$name", "valuevalue")
        check("$name1$name", "abcvalue")
        check("$name_$name", "defvalue")
        check("$_123$name", "ghivalue")
        check("$name $name", "value value")
        check("$name1 $name", "abc value")
        check("$name_ $name", "def value")
        check("$_123 $name", "ghi value")
        check("splat", "splat")
        check("$$", "$")
        check("$$$name$$", "$value$")

    def test_undefined_names(self):
        d = {"name": "value"}
        self.assertEqual(interpolate("$splat", d), "")
        self.assertEqual(interpolate("$splat1", d), "")
        self.assertEqual(interpolate("$splat_", d), "")

    def test_syntax_errors(self):
        d = {"name": "value"}
        def check(s):
            self.assertRaises(InterpolationSyntaxError,
                              interpolate, s, d)
        check("$")
        check("$ stuff")
        check("$1")
        check("${")
        check("${name")
        check("${1name}")
        check("${ name}")

    def test_non_nesting(self):
        d = {"name": "$value"}
        self.assertEqual(interpolate("$name", d), "$value")


def test_suite():
    return unittest.makeSuite(InterpolationTestCase)

if __name__ == '__main__':
    unittest.main(defaultTest='test_suite')