Gradle: allow to send custom test events for Gradle test runner using internal xml protocol

plugins/gradle/tooling-extension-impl/src/org/jetbrains/plugins/gradle/tooling/builder/ExternalProjectBuilderImpl.groovy

@@ -158,7 +158,7 @@ class ExternalProjectBuilderImpl implements ModelBuilderService {
         externalTask.description = task.description
         externalTask.group = task.group ?: "other"
         def ext = task.getExtensions()?.extraProperties
-        externalTask.test = (task instanceof Test) || (ext?.has("idea.internal.test") && ext.get("idea.internal.test") == true)
+        externalTask.test = (task instanceof Test) || (ext?.has("idea.internal.test") && Boolean.valueOf(ext.get("idea.internal.test")))
         externalTask.type = ProjectExtensionsDataBuilderImpl.getType(task)
         result.put(externalTask.name, externalTask)
       }

plugins/gradle/tooling-extension-impl/src/org/jetbrains/plugins/gradle/tooling/internal/init/testFilterInit.gradle

@@ -3,6 +3,7 @@ import groovy.xml.MarkupBuilder
 import org.gradle.api.internal.tasks.testing.TestDescriptorInternal
 import org.gradle.util.*
 
+System.setProperty("idea.active", "true")
 String[] ijTestIncludes = ${TEST_NAME_INCLUDES}
 boolean ijTestFilteringSupported = GradleVersion.current().compareTo(GradleVersion.version("1.10"))>=0
 boolean skipExecution