Failed test cases cascade when there's an error

[richzeng]

The way most tests are structured right now causes errors to cascade to later tests. eg.

>>> parsed = splparser.parser.parse("blahblah1")
>>> parsed.print_tree()
# tree prints
>>> parsed = splparser.parser.parse("blahblah2")
# ERROR
>>> parsed.print_tree()
# prints the tree for blahblah1

We should fix this buy just changing the test cases to say

>>> splparser.parser.parse("blahblah1").print_tree()

[richzeng]

Closed