web.web.template

test()

Doctest for testing template module.

Define a utility function to run template test.

>>> class TestResult:
...     def __init__(self, t): self.t = t
...     def __getattr__(self, name): return getattr(self.t, name)
...     def __repr__(self): return repr(unicode(self))
...
>>> def t(code, **keywords):
...     tmpl = Template(code, **keywords)
...     return lambda *a, **kw: TestResult(tmpl(*a, **kw))
...

Simple tests.

>>> t('1')()
u'1\n'
>>> t('$def with ()\n1')()
u'1\n'
>>> t('$def with (a)\n$a')(1)
u'1\n'
>>> t('$def with (a=0)\n$a')(1)
u'1\n'
>>> t('$def with (a=0)\n$a')(a=1)
u'1\n'

Test complicated expressions.

>>> t('$def with (x)\n$x.upper()')('hello')
u'HELLO\n'
>>> t('$(2 * 3 + 4 * 5)')()
u'26\n'
>>> t('${2 * 3 + 4 * 5}')()
u'26\n'
>>> t('$def with (limit)\nkeep $(limit)ing.')('go')
u'keep going.\n'
>>> t('$def with (a)\n$a.b[0]')(storage(b=[1]))
u'1\n'

Test html escaping.

>>> t('$def with (x)\n$x', filename='a.html')('<html>')
u'&lt;html&gt;\n'
>>> t('$def with (x)\n$x', filename='a.txt')('<html>')
u'<html>\n'

Test if, for and while.

>>> t('$if 1: 1')()
u'1\n'
>>> t('$if 1:\n    1')()
u'1\n'
>>> t('$if 1:\n    1\\')()
u'1'
>>> t('$if 0: 0\n$elif 1: 1')()
u'1\n'
>>> t('$if 0: 0\n$elif None: 0\n$else: 1')()
u'1\n'
>>> t('$if 0 < 1 and 1 < 2: 1')()
u'1\n'
>>> t('$for x in [1, 2, 3]: $x')()
u'1\n2\n3\n'
>>> t('$def with (d)\n$for k, v in d.iteritems(): $k')({1: 1})
u'1\n'
>>> t('$for x in [1, 2, 3]:\n\t$x')()
u'    1\n    2\n    3\n'
>>> t('$def with (a)\n$while a and a.pop():1')([1, 2, 3])
u'1\n1\n1\n'

The space after : must be ignored.

>>> t('$if True: foo')()
u'foo\n'

Test loop.xxx.

>>> t("$for i in range(5):$loop.index, $loop.parity")()
u'1, odd\n2, even\n3, odd\n4, even\n5, odd\n'
>>> t("$for i in range(2):\n    $for j in range(2):$loop.parent.parity $loop.parity")()
u'odd odd\nodd even\neven odd\neven even\n'

Test assignment.

>>> t('$ a = 1\n$a')()
u'1\n'
>>> t('$ a = [1]\n$a[0]')()
u'1\n'
>>> t('$ a = {1: 1}\n$a.keys()[0]')()
u'1\n'
>>> t('$ a = []\n$if not a: 1')()
u'1\n'
>>> t('$ a = {}\n$if not a: 1')()
u'1\n'
>>> t('$ a = -1\n$a')()
u'-1\n'
>>> t('$ a = "1"\n$a')()
u'1\n'

Test comments.

>>> t('$# 0')()
u'\n'
>>> t('hello$#comment1\nhello$#comment2')()
u'hello\nhello\n'
>>> t('$#comment0\nhello$#comment1\nhello$#comment2')()
u'\nhello\nhello\n'

Test unicode.

>>> t('$def with (a)\n$a')(u'\u203d')
u'\u203d\n'
>>> t('$def with (a)\n$a')(u'\u203d'.encode('utf-8'))
u'\u203d\n'
>>> t(u'$def with (a)\n$a $:a')(u'\u203d')
u'\u203d \u203d\n'
>>> t(u'$def with ()\nfoo')()
u'foo\n'
>>> def f(x): return x
...
>>> t(u'$def with (f)\n$:f("x")')(f)
u'x\n'
>>> t('$def with (f)\n$:f("x")')(f)
u'x\n'

Test dollar escaping.

>>> t("Stop, $$money isn't evaluated.")()
u"Stop, $money isn't evaluated.\n"
>>> t("Stop, \$money isn't evaluated.")()
u"Stop, $money isn't evaluated.\n"

Test space sensitivity.

>>> t('$def with (x)\n$x')(1)
u'1\n'
>>> t('$def with(x ,y)\n$x')(1, 1)
u'1\n'
>>> t('$(1 + 2*3 + 4)')()
u'11\n'

Make sure globals are working.

>>> t('$x')()
Traceback (most recent call last):
    ...
NameError: global name 'x' is not defined
>>> t('$x', globals={'x': 1})()
u'1\n'

Can't change globals.

>>> t('$ x = 2\n$x', globals={'x': 1})()
u'2\n'
>>> t('$ x = x + 1\n$x', globals={'x': 1})()
Traceback (most recent call last):
    ...
UnboundLocalError: local variable 'x' referenced before assignment

Make sure builtins are customizable.

>>> t('$min(1, 2)')()
u'1\n'
>>> t('$min(1, 2)', builtins={})()
Traceback (most recent call last):
    ...
NameError: global name 'min' is not defined

Test vars.

>>> x = t('$var x: 1')()
>>> x.x
u'1'
>>> x = t('$var x = 1')()
>>> x.x
1
>>> x = t('$var x:  \n    foo\n    bar')()
>>> x.x
u'foo\nbar\n'

Test BOM chars.

>>> t('\xef\xbb\xbf$def with(x)\n$x')('foo')
u'foo\n'

Test for with weird cases.

>>> t('$for i in range(10)[1:5]:\n    $i')()
u'1\n2\n3\n4\n'
>>> t("$for k, v in {'a': 1, 'b': 2}.items():\n    $k $v")()
u'a 1\nb 2\n'
>>> t("$for k, v in ({'a': 1, 'b': 2}.items():\n    $k $v")()
Traceback (most recent call last):
    ...
SyntaxError: invalid syntax

Test datetime.

>>> import datetime
>>> t("$def with (date)\n$date.strftime('%m %Y')")(datetime.datetime(2009, 1, 1))
u'01 2009\n'

TEMPLATE_BUILTIN_NAMES

Value:

['dict',
 'enumerate',
 'float',
 'int',
 'bool',
 'list',
 'long',
 'reversed',
...

TEMPLATE_BUILTINS

Value:

{'False': False,
 'None': None,
 'True': True,
 '__import__': <built-in function __import__>,
 'abs': <built-in function abs>,
 'all': <built-in function all>,
 'any': <built-in function any>,
 'bool': <type 'bool'>,
...

_htmlquote_d

Value:

{u'"': u'&quot;',
 u'&': u'&amp;',
 u''': u'&#39;',
 u'<': u'&lt;',
 u'>': u'&gt;'}

ALLOWED_AST_NODES

Value:

['Add',
 'And',
 'AssList',
 'AssName',
 'AssTuple',
 'Assign',
 'AugAssign',
 'Bitand',
...

Module template

splitline(text)

websafe(text)

test()

STATEMENT_NODES

TEMPLATE_BUILTIN_NAMES

TEMPLATE_BUILTINS

_htmlquote_d

ALLOWED_AST_NODES