def test_parse_single_if_statement():
sc = Scanner('#<if_statement>', "{% if somevar %}Foo!{% endif %}")
p = Parser(sc)
s = p.parse_statement()
assert (isinstance(s, IfStatement))
assert (len(s.cases) == 1)
case0 = s.cases[0]
assert (isinstance(case0.test, VarRefExpression))
assert (case0.test.name == 'somevar')
assert (len(case0.cons) == 1)
assert (isinstance(case0.cons[0], TextStatement))
assert (case0.cons[0].text == 'Foo!')
def test_parse_for_in_statement():
sc = Scanner('#<for_in_statement>',
"{% for i in range(1, 10) %}Foo!{% endfor %}")
p = Parser(sc)
s = p.parse_statement()
assert (isinstance(s, ForInStatement))
assert (isinstance(s.pattern, VarPattern))
assert (s.pattern.name == 'i')
assert (isinstance(s.expression, AppExpression))
assert (isinstance(s.expression.operator, VarRefExpression))
assert (s.expression.operator.name == 'range')
assert (len(s.expression.operands) == 2)
assert (isinstance(s.expression.operands[0], ConstExpression))
assert (s.expression.operands[0].value == 1)
assert (isinstance(s.expression.operands[1], ConstExpression))
assert (s.expression.operands[1].value == 10)
assert (len(s.body) == 1)
assert (isinstance(s.body[0], TextStatement))
assert (s.body[0].text == 'Foo!')
def test_parse_fail_parse_close_delimiter():
sc1 = Scanner('#<wrong_for_endif>',
"{% for i in range(1, 10) %}Foo!{% endif %}")
p1 = Parser(sc1)
with pytest.raises(ParseError):
p1.parse_statement()
sc2 = Scanner('#<wrong_for_for>',
"{% for i in range(1, 20) %}Foo!{% for %}")
p2 = Parser(sc2)
with pytest.raises(ParseError):
p2.parse_statement()
sc3 = Scanner('#<wrong_if_endfor>', "{% if somevmar %}Foo!{% endfor %}")
p3 = Parser(sc3)
with pytest.raises(ParseError):
p3.parse_statement()