Gradle doesn't catch exception - gradle

Question

I am running a very simple Gradle task.
which run Yarn command - yarn_test which run Selenium tests.
I am using com.moowork.gradle:gradle-node-plugin:1.2.0 plugin in order to run Yarn commands
my task look like -
task run_tests(type: YarnTask) {
try {
args = ['test']
}catch (all){
println('Tests failed!')
}}
and in my packge.json i have:
"test": "mocha --timeout 25000 ./automation/test --reporter xunit-file"
even when I changed it to run as exec
executable "sh"
args "-c", "yarn test"
I got the same error, so it is not something with the plugin but, with Gradle try-catch
when even one test fail no meter why I want to catch the exception.
but for some reason it doesn't get caught.
when I run with --stacktrace this is what I get-
error Command failed with exit code 2.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
Task :run_tests FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':run_tests'.
Process 'command '/DATA/build/workspace/build_build/.gradle/yarn/yarn-v1.3.2/bin/yarn'' finished with non-zero exit value 1
* Try:
Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Exception is:
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':run_tests'.
What am I missing?
All I want is to print some error, and finish the build.. but not with exception?!
Gradle 4.7, run on Ubuntu with Gradle wrapper.
Thanks
EDIT
even when i run just
sh: exit 1
I got same result so, it has to be something with gradle try-catch and not with yarn ormocha etc

Answer 1

The problem is that your try/catch is covering the configuration gradle build phase, not the execution phase. The full gradle build lifecycle is covered here, but I'll include the basic descriptions of each phase at the end of this answer.
It looks like YarnTask supports the ignoreExitValue property, so you should at least be able to do something like:
task run_tests(type: YarnTask) {
args = ['test']
ignoreExitValue = true
}
to just ignore the result; I think you can make it even a bit more sophisticated, like:
task run_tests(type: YarnTask) {
args = ['test']
ignoreExitValue = true
doLast {
if(result.getExitValue() != 0){
println "Tests failed!"
}
}
}
The doLast action will be executed after completion of all of the task's defined actions (e.g., after the tests have been run).
Phases of the Gradle Build Lifecycle, the very short version:
Initialization - Determine which projects/subprojects will be built
Configuration - Configures all the projects/tasks (executes the build scripts, which prepares the tasks)
Execution - Executes the tasks themselves