Robert Moore 675235ed05
{Tests} Deallocate test objects at the end of tests. (#5397)
Deallocating many of the properties created for each unit test. Since all
XCTestCase instances survive until the end of the test suite, any properties
created for a test will be preserved as well. This frees up around 3.7 MB
(~6%) of memory from the entire test suite, as measured on my desktop.

|Before|After|
|----|----|
|![test-objcs-before](https://user-images.githubusercontent.com/1753199/46813473-c3b9bd00-cd44-11e8-990c-28dff4ab5ad2.png)|![test-objcs-after](https://user-images.githubusercontent.com/1753199/46813481-c7e5da80-cd44-11e8-90e4-2e6d532ebbfb.png)|

See also: https://qualitycoding.org/xctestcase-teardown/

Closes #5395
2018-10-12 08:33:58 -04:00
..