testItLogsErrorWhenExistingRenderedNewsletterBodyIsInvalid() was removed
because since 0e13cd02c31baef706f852664570e3ddb014f56d,
preProcessNewsletter() doesn't throw an exception anymore for an invalid
newsletter body:
0e13cd02c3 (diff-449c06813489ce1e60006fdd40b4f23eb3a0cf290ff84b703dcee44b04435eadL142)
Presumably, this is because Doctrine won't allow the code to save an
invalid body.
testItLogsErrorWhenNewlyRenderedNewsletterBodyIsInvalid() was removed
because it doesn't seem to test what it was supposed to test and it is
not trivial to make it work. Even on trunk this test was passing because
`self::fail('Sending error exception was not thrown.')` throwns an
exception and not because preProcessNewsletter() was throwing an
exception.
[MAILPOET-5682]
9c0eea54f8