If the test name has new line, Test Explorer failed to the initialization

[sglim]

If you set test name like in test file:

test """
       Some
newline
test
       """,

will cause the following error.

Error: TypeError: Cannot read properties of null (reading '0')

The result of mix test --trace --seed=0 --only="" looks like following:

SomeTest [test/some_test.exs]
  * test Some
newline
test [L#40]

So the extension failed to parse the test trace log.