Add filter: hide regular passing tests, show slow passing tests

[C-Otto]

Description

My project has several thousand (unit and integration) tests and I really don't want to see a line for each passing test.
However, there are a few slow tests, and the "slowThreshold" feature is extremely helpful - thank you!

To be able to identify the slow tests, I'd like to see the corresponding output, while the regular (fast) tests are not displayed.

Additional information

Current:

SomeTest testA PASSED
SomeTest testB PASSED
SomeTest testC PASSED
SomeTest testD PASSED (502ms)

Expected:

SomeTest testD PASSED (502ms)

[C-Otto]

Related to #159 (consider time spent in setUp).

[C-Otto]

Quirky workaround for one-shot scans of slow tests: ./gradlew test | grep "s)"

[grimmjo]

Hi @radarsh,

what do you think about adding a parameter showSlow? It is true by default.
If showPassed is false, then just all slow passed test will be shown.
This would be an easy extension to the existing code. I can do that 😄

[C-Otto]

Thanks a lot for the new release! This is how I use it in my project:

testlogger {
    theme 'standard-parallel'
    slowThreshold 1000
    showSimpleNames true
    showOnlySlow true
}