Parse and add stdlib test results to overall statistics

backend.native/tests/build.gradle

@@ -150,6 +150,10 @@ task resultsTask() {
             results.put(it.name, it.results)
             statistics.add(it.statistics)
         }
+        
+        tasks.withType(RunStdlibTest).matching {it.state.executed }.each {
+            statistics.add(it.statistics)
+        }
 
         def output = ["statistics": statistics, "tests": results]
         def json = JsonOutput.toJson(output)
@@ -3041,6 +3045,8 @@ task runStdlibTests(type: RunStdlibTest) {
     useFilter = false
     arguments = [ "--ktest_negative_regex_filter=test.collections.CollectionTest.abstractCollectionToArray" ]
     runnerLogger = RunKonanTest.Logger.GTEST
+
+    finalizedBy resultsTask
 }
 
 task buildKonanTests(type: BuildKonanTest) {

buildSrc/plugins/src/main/groovy/org/jetbrains/kotlin/KonanTest.groovy

@@ -252,6 +252,8 @@ abstract class KonanTest extends JavaExec {
         }
     }
 
+    OutputStream out
+
     @TaskAction
     void executeTest() {
         if (!enabled) {
@@ -274,7 +276,7 @@ abstract class KonanTest extends JavaExec {
 
         def compilerMessagesText = compilerMessages ? project.file("${program}.compilation.log").getText('UTF-8') : ""
 
-        def out = new ByteArrayOutputStream()
+        out = new ByteArrayOutputStream()
         //TODO Add test timeout
         ExecResult execResult = project.execute {
 
@@ -462,10 +464,41 @@ class RunKonanTest extends ExtKonanTest {
 
 class RunStdlibTest extends RunKonanTest {
     public def inDevelopersRun = false
+    public def statistics = new RunExternalTestGroup.Statistics()
 
     RunStdlibTest() {
         super('buildKonanStdlibTests')
     }
+
+    @Override
+    void executeTest() {
+        try {
+            super.executeTest()
+        } finally {
+            def output = out.toString("UTF-8")
+
+            // NOTE: these regexs assert that GTEST output format is used
+            def matcher = (output =~ ~/\[==========\] Running ([0-9]*) tests from ([0-9]*) test cases \. .*/)
+            def testsTotal = 0
+            if (matcher) {
+                testsTotal = matcher[0][1] as Integer
+            }
+
+            matcher = (output =~ ~/\[  PASSED  \] ([0-9]*) tests\./)
+            if (matcher) {
+                def n = matcher[0][1] as Integer
+                statistics.pass(n)
+            }
+            matcher = (output =~ ~/\[  FAILED  \] ([0-9]*) tests.*/)
+            if (matcher) {
+                def n = matcher[0][1] as Integer
+                statistics.fail(n)
+            }
+            if (statistics.total == 0) {
+                statistics.error(testsTotal != 0 ? testsTotal : 1)
+            }
+        }
+    }
 }
 
 /**