| # Copyright (C) 2004 Python Software Foundation | |
| # Author: barry@python.org (Barry Warsaw) | |
| # License: http://www.opensource.org/licenses/PythonSoftFoundation.php | |
| import unittest | |
| from string import Template | |
| class Bag: | |
| pass | |
| class Mapping: | |
| def __getitem__(self, name): | |
| obj = self | |
| for part in name.split('.'): | |
| try: | |
| obj = getattr(obj, part) | |
| except AttributeError: | |
| raise KeyError(name) | |
| return obj | |
| class TestTemplate(unittest.TestCase): | |
| def test_regular_templates(self): | |
| s = Template('$who likes to eat a bag of $what worth $$100') | |
| self.assertEqual(s.substitute(dict(who='tim', what='ham')), | |
| 'tim likes to eat a bag of ham worth $100') | |
| self.assertRaises(KeyError, s.substitute, dict(who='tim')) | |
| def test_regular_templates_with_braces(self): | |
| s = Template('$who likes ${what} for ${meal}') | |
| d = dict(who='tim', what='ham', meal='dinner') | |
| self.assertEqual(s.substitute(d), 'tim likes ham for dinner') | |
| self.assertRaises(KeyError, s.substitute, | |
| dict(who='tim', what='ham')) | |
| def test_escapes(self): | |
| eq = self.assertEqual | |
| s = Template('$who likes to eat a bag of $$what worth $$100') | |
| eq(s.substitute(dict(who='tim', what='ham')), | |
| 'tim likes to eat a bag of $what worth $100') | |
| s = Template('$who likes $$') | |
| eq(s.substitute(dict(who='tim', what='ham')), 'tim likes $') | |
| def test_percents(self): | |
| eq = self.assertEqual | |
| s = Template('%(foo)s $foo ${foo}') | |
| d = dict(foo='baz') | |
| eq(s.substitute(d), '%(foo)s baz baz') | |
| eq(s.safe_substitute(d), '%(foo)s baz baz') | |
| def test_stringification(self): | |
| eq = self.assertEqual | |
| s = Template('tim has eaten $count bags of ham today') | |
| d = dict(count=7) | |
| eq(s.substitute(d), 'tim has eaten 7 bags of ham today') | |
| eq(s.safe_substitute(d), 'tim has eaten 7 bags of ham today') | |
| s = Template('tim has eaten ${count} bags of ham today') | |
| eq(s.substitute(d), 'tim has eaten 7 bags of ham today') | |
| def test_tupleargs(self): | |
| eq = self.assertEqual | |
| s = Template('$who ate ${meal}') | |
| d = dict(who=('tim', 'fred'), meal=('ham', 'kung pao')) | |
| eq(s.substitute(d), "('tim', 'fred') ate ('ham', 'kung pao')") | |
| eq(s.safe_substitute(d), "('tim', 'fred') ate ('ham', 'kung pao')") | |
| def test_SafeTemplate(self): | |
| eq = self.assertEqual | |
| s = Template('$who likes ${what} for ${meal}') | |
| eq(s.safe_substitute(dict(who='tim')), 'tim likes ${what} for ${meal}') | |
| eq(s.safe_substitute(dict(what='ham')), '$who likes ham for ${meal}') | |
| eq(s.safe_substitute(dict(what='ham', meal='dinner')), | |
| '$who likes ham for dinner') | |
| eq(s.safe_substitute(dict(who='tim', what='ham')), | |
| 'tim likes ham for ${meal}') | |
| eq(s.safe_substitute(dict(who='tim', what='ham', meal='dinner')), | |
| 'tim likes ham for dinner') | |
| def test_invalid_placeholders(self): | |
| raises = self.assertRaises | |
| s = Template('$who likes $') | |
| raises(ValueError, s.substitute, dict(who='tim')) | |
| s = Template('$who likes ${what)') | |
| raises(ValueError, s.substitute, dict(who='tim')) | |
| s = Template('$who likes $100') | |
| raises(ValueError, s.substitute, dict(who='tim')) | |
| def test_idpattern_override(self): | |
| class PathPattern(Template): | |
| idpattern = r'[_a-z][._a-z0-9]*' | |
| m = Mapping() | |
| m.bag = Bag() | |
| m.bag.foo = Bag() | |
| m.bag.foo.who = 'tim' | |
| m.bag.what = 'ham' | |
| s = PathPattern('$bag.foo.who likes to eat a bag of $bag.what') | |
| self.assertEqual(s.substitute(m), 'tim likes to eat a bag of ham') | |
| def test_pattern_override(self): | |
| class MyPattern(Template): | |
| pattern = r""" | |
| (?P<escaped>@{2}) | | |
| @(?P<named>[_a-z][._a-z0-9]*) | | |
| @{(?P<braced>[_a-z][._a-z0-9]*)} | | |
| (?P<invalid>@) | |
| """ | |
| m = Mapping() | |
| m.bag = Bag() | |
| m.bag.foo = Bag() | |
| m.bag.foo.who = 'tim' | |
| m.bag.what = 'ham' | |
| s = MyPattern('@bag.foo.who likes to eat a bag of @bag.what') | |
| self.assertEqual(s.substitute(m), 'tim likes to eat a bag of ham') | |
| class BadPattern(Template): | |
| pattern = r""" | |
| (?P<badname>.*) | | |
| (?P<escaped>@{2}) | | |
| @(?P<named>[_a-z][._a-z0-9]*) | | |
| @{(?P<braced>[_a-z][._a-z0-9]*)} | | |
| (?P<invalid>@) | | |
| """ | |
| s = BadPattern('@bag.foo.who likes to eat a bag of @bag.what') | |
| self.assertRaises(ValueError, s.substitute, {}) | |
| self.assertRaises(ValueError, s.safe_substitute, {}) | |
| def test_unicode_values(self): | |
| s = Template('$who likes $what') | |
| d = dict(who=u't\xffm', what=u'f\xfe\fed') | |
| self.assertEqual(s.substitute(d), u't\xffm likes f\xfe\x0ced') | |
| def test_keyword_arguments(self): | |
| eq = self.assertEqual | |
| s = Template('$who likes $what') | |
| eq(s.substitute(who='tim', what='ham'), 'tim likes ham') | |
| eq(s.substitute(dict(who='tim'), what='ham'), 'tim likes ham') | |
| eq(s.substitute(dict(who='fred', what='kung pao'), | |
| who='tim', what='ham'), | |
| 'tim likes ham') | |
| s = Template('the mapping is $mapping') | |
| eq(s.substitute(dict(foo='none'), mapping='bozo'), | |
| 'the mapping is bozo') | |
| eq(s.substitute(dict(mapping='one'), mapping='two'), | |
| 'the mapping is two') | |
| def test_keyword_arguments_safe(self): | |
| eq = self.assertEqual | |
| raises = self.assertRaises | |
| s = Template('$who likes $what') | |
| eq(s.safe_substitute(who='tim', what='ham'), 'tim likes ham') | |
| eq(s.safe_substitute(dict(who='tim'), what='ham'), 'tim likes ham') | |
| eq(s.safe_substitute(dict(who='fred', what='kung pao'), | |
| who='tim', what='ham'), | |
| 'tim likes ham') | |
| s = Template('the mapping is $mapping') | |
| eq(s.safe_substitute(dict(foo='none'), mapping='bozo'), | |
| 'the mapping is bozo') | |
| eq(s.safe_substitute(dict(mapping='one'), mapping='two'), | |
| 'the mapping is two') | |
| d = dict(mapping='one') | |
| raises(TypeError, s.substitute, d, {}) | |
| raises(TypeError, s.safe_substitute, d, {}) | |
| def test_delimiter_override(self): | |
| eq = self.assertEqual | |
| raises = self.assertRaises | |
| class AmpersandTemplate(Template): | |
| delimiter = '&' | |
| s = AmpersandTemplate('this &gift is for &{who} &&') | |
| eq(s.substitute(gift='bud', who='you'), 'this bud is for you &') | |
| raises(KeyError, s.substitute) | |
| eq(s.safe_substitute(gift='bud', who='you'), 'this bud is for you &') | |
| eq(s.safe_substitute(), 'this &gift is for &{who} &') | |
| s = AmpersandTemplate('this &gift is for &{who} &') | |
| raises(ValueError, s.substitute, dict(gift='bud', who='you')) | |
| eq(s.safe_substitute(), 'this &gift is for &{who} &') | |
| class PieDelims(Template): | |
| delimiter = '@' | |
| s = PieDelims('@who likes to eat a bag of @{what} worth $100') | |
| self.assertEqual(s.substitute(dict(who='tim', what='ham')), | |
| 'tim likes to eat a bag of ham worth $100') | |
| def test_main(): | |
| from test import test_support | |
| test_classes = [TestTemplate,] | |
| test_support.run_unittest(*test_classes) | |
| if __name__ == '__main__': | |
| test_main() |