unit-tests: Add gtest-like output

runtime/src/main/kotlin/konan/test/Launcher.kt

@@ -8,15 +8,15 @@ class SimpleTestListener: TestListener {
         private set
 
     override fun startTesting(runner: TestRunner) = println("Starting testing")
-    override fun endTesting(runner: TestRunner) = println("Testing finished")
+    override fun endTesting(runner: TestRunner, timeMillis: Long) = println("Testing finished")
 
     override fun startSuite(suite: TestSuite) = println("Starting test suite: $suite")
-    override fun endSuite(suite: TestSuite) = println("Test suite finished: $suite")
+    override fun endSuite(suite: TestSuite, timeMillis: Long) = println("Test suite finished: $suite")
     override fun ignoreSuite(suite: TestSuite) = println("Test suite ignored: $suite")
 
     override fun start(testCase: TestCase) = println("Starting test case: $testCase")
-    override fun pass(testCase: TestCase) = println("Passed: $testCase")
-    override fun fail(testCase: TestCase, e: Throwable) {
+    override fun pass(testCase: TestCase, timeMillis: Long) = println("Passed: $testCase")
+    override fun fail(testCase: TestCase, e: Throwable, timeMillis: Long) {
         println("Failed: $testCase. Exception:")
         e.printStackTrace()
         hasFails = true
@@ -25,7 +25,7 @@ class SimpleTestListener: TestListener {
 }
 
 fun main(args:Array<String>) {
-    val listener = SimpleTestListener()
+    val listener = GTestListener()
     TestRunner.run(listener)
-    exitProcess( if (listener.hasFails) -1 else 0 )
+    exitProcess( if (listener.hasFailedTests) -1 else 0 )
 }

runtime/src/main/kotlin/konan/test/Listeners.kt

@@ -0,0 +1,67 @@
+package konan.test
+
+val TestRunner.totalTests
+    get() = suites.map { it.size }.reduce { sum, size -> sum + size }
+
+val TestRunner.totalSuites
+    get() = suites.size
+
+class GTestListener: TestListener, AbstractTestStatistics() {
+
+    private val TestCase.prettyName get() = "${suite.name}.$name"
+    private val failedTests_ = mutableListOf<TestCase>()
+
+    private var totalSuites = 0
+
+    override fun startTesting(runner: TestRunner) {
+        println("[==========] Running ${runner.totalTests} tests from ${runner.totalSuites} test case.")
+        println("[----------] Global test environment set-up.") // TODO: just emulation
+    }
+
+    private fun printResults(timeMillis: Long) {
+        println("[----------] Global test environment tear-down")
+        println("[==========] $total tests from $totalSuites test cases ran. ($timeMillis ms total)")
+        println("[  PASSED  ] $passed tests.")
+        if (hasFailedTests) {
+            println("[  FAILED  ] $failed tests, listed below:")
+            failedTests.forEach {
+                println("[  FAILED  ] ${it.prettyName}")
+            }
+            println("\n$failed FAILED TESTS")
+        }
+        if (ignored != 0) {
+            println("YOU HAVE $ignored DISABLED TEST(S)")
+        }
+    }
+
+    override fun endTesting(runner: TestRunner, timeMillis: Long) = printResults(timeMillis)
+
+    override fun startSuite(suite: TestSuite) = println("[----------] ${suite.size} tests from ${suite.name}")
+    override fun endSuite(suite: TestSuite, timeMillis: Long) {
+        totalSuites++
+        println("[----------] ${suite.size} tests from ${suite.name} ($timeMillis ms total)\n")
+    }
+
+    override fun ignoreSuite(suite: TestSuite) {}
+
+    override fun start(testCase: TestCase) = println("[ RUN      ] ${testCase.prettyName}")
+
+    override fun pass(testCase: TestCase, timeMillis: Long) {
+        registerPass()
+        println("[       OK ] ${testCase.prettyName} ($timeMillis ms)")
+    }
+
+    override fun fail(testCase: TestCase, e: Throwable, timeMillis: Long) {
+        registerFail()
+        failedTests_.add(testCase)
+        e.printStackTrace()
+        println("[  FAILED  ] ${testCase.prettyName} ($timeMillis ms)")
+    }
+
+    override fun ignore(testCase: TestCase) = registerIgnore()
+
+    override val failedTests: Collection<TestCase>
+        get() = failedTests_
+    override val hasFailedTests: Boolean
+        get() = failed != 0
+}

runtime/src/main/kotlin/konan/test/TestListener.kt

@@ -1,17 +1,37 @@
 package konan.test
 
-import kotlin.AssertionError
-
 interface TestListener {
     fun startTesting(runner: TestRunner)
-    fun endTesting(runner: TestRunner)
+    fun endTesting(runner: TestRunner, timeMillis: Long)
 
     fun startSuite(suite: TestSuite)
-    fun endSuite(suite: TestSuite)
+    fun endSuite(suite: TestSuite, timeMillis: Long)
     fun ignoreSuite(suite: TestSuite)
 
     fun start(testCase: TestCase)
-    fun pass(testCase: TestCase)
-    fun fail(testCase: TestCase, e: Throwable)
+    fun pass(testCase: TestCase, timeMillis: Long)
+    fun fail(testCase: TestCase, e: Throwable, timeMillis: Long)
     fun ignore(testCase: TestCase)
+}
+
+interface TestStatistics {
+    val total: Int
+    val passed: Int
+    val failed: Int
+    val ignored: Int
+
+    // TODO: Do we need such properties for other cases?
+    val failedTests: Collection<TestCase>
+    val hasFailedTests: Boolean
+}
+
+abstract class AbstractTestStatistics: TestStatistics {
+    override var total:   Int = 0; protected set
+    override var passed:  Int = 0; protected set
+    override var failed:  Int = 0; protected set
+    override var ignored: Int = 0; protected set
+
+    protected fun registerPass() { total++; passed++ }
+    protected fun registerFail() { total++; failed++ }
+    protected fun registerIgnore() { total++; ignored++ }
 }

runtime/src/main/kotlin/konan/test/TestRunner.kt

@@ -1,5 +1,7 @@
 package konan.test
 
+import kotlin.system.measureTimeMillis
+
 object TestRunner {
 
     private val _suites = mutableListOf<TestSuite>()
@@ -11,15 +13,17 @@ object TestRunner {
 
     fun run(listener: TestListener) = with(listener) {
         startTesting(this@TestRunner)
-        suites.forEach {
-            if (it.ignored) {
-                ignoreSuite(it)
-            } else {
-                startSuite(it)
-                it.run(listener)
-                endSuite(it)
+        val totalTime = measureTimeMillis {
+            suites.forEach {
+                if (it.ignored) {
+                    ignoreSuite(it)
+                } else {
+                    startSuite(it)
+                    val time = measureTimeMillis { it.run(listener) }
+                    endSuite(it, time)
+                }
             }
         }
-        endTesting(this@TestRunner)
+        endTesting(this@TestRunner, totalTime)
     }
 }

runtime/src/main/kotlin/konan/test/TestSuite.kt

@@ -1,6 +1,8 @@
 package konan.test
 
 import kotlin.IllegalArgumentException
+import kotlin.system.getTimeMillis
+import kotlin.system.measureTimeMillis
 
 interface TestCase {
     val name: String
@@ -12,6 +14,7 @@ interface TestSuite {
     val name: String
     val ignored: Boolean
     val testCases: Map<String, TestCase>
+    val size : Int
     fun run(listener: TestListener)
 }
 
@@ -57,21 +60,24 @@ abstract class AbstractTestSuite<F: Function<Unit>>(override val name: String, o
         TestRunner.register(this)
     }
 
+    override val size: Int
+        get() = testCases.size
+
     override fun run(listener: TestListener) {
         doBeforeClass()
         testCases.values.forEach {
             if (it.ignored) {
                 listener.ignore(it)
             } else {
+                val startTime = getTimeMillis()
                 try {
                     listener.start(it)
                     doTest(it)
-                    listener.pass(it)
+                    listener.pass(it, getTimeMillis() - startTime)
                 } catch (e: Throwable) {
-                    listener.fail(it, e)
+                    listener.fail(it, e, getTimeMillis() - startTime)
                 }
             }
-
         }
         doAfterClass()
     }