Make default driver launch command array non-empty (#313)

* Make default driver launch command array non-empty

* Uppdate IdeProbeConfigTest

core/driver/sources/src/main/resources/reference.conf

@@ -229,11 +229,14 @@ probe {
     launch {
 
       // `driver.launch.command` is a string array transformed into the command used to launch the IDE (each string
-      // from the array is a single element of the command). By default, the driver uses the `idea` command,
-      // but you can specify a custom command by using this config.
-      // Note, that the `idea` command is available on the PATH. If you want to provide your custom command -
+      // from the array is a single element of the command). By default, the driver uses the "idea" command, which
+      // runs the default "idea" script/executable file (`idea` for macOs, `idea.sh` for Linux). You can specify
+      // a custom command by using this config. For example, you can add command line options that should be
+      // appended to the command. You can also use a totally different command, like starting your own script, which
+      // starts IDE in a custom way.
+      // Note, that the "idea" command is available on the PATH. If you want to provide your custom command -
       // make sure it is available on the PATH as well.
-      command = []
+      command = ["idea"]
 
       // `driver.launch.timeout` is the maximum time the driver will wait for the IDE to connect the probe.
       // After exceeding this time, the whole test fails. Note: format for `timeout` should be compatible with

core/driver/sources/src/test/scala/org/virtuslab/ideprobe/dependencies/IdeProbeConfigTest.scala

@@ -48,7 +48,7 @@ class IdeProbeConfigTest extends IdeProbeFixture {
     assertEquals(defaultJbrRepositoriesPatterns, probeConfig.resolvers.jbr.repositories)
     assertEquals(0, probeConfig.resolvers.retries)
     // tests for the driver: DriverConfig field
-    assertEquals(Seq.empty, probeConfig.driver.launch.command)
+    assertEquals(Seq("idea"), probeConfig.driver.launch.command)
     assertEquals(30.seconds, probeConfig.driver.launch.timeout)
     assertEquals(false, probeConfig.driver.check.errors.enabled)
     assertEquals(Seq(".*"), probeConfig.driver.check.errors.includeMessages)