Make isStressTest and the related properties top-level

kotlinx-coroutines-core/common/test/TestBase.common.kt

@@ -10,10 +10,10 @@ import kotlinx.coroutines.flow.*
 import kotlin.coroutines.*
 import kotlin.test.*
 
-public expect open class TestBase constructor() {
- public val isStressTest: Boolean
- public val stressTestMultiplier: Int
+public expect val isStressTest: Boolean
+public expect val stressTestMultiplier: Int
 
+public expect open class TestBase constructor() {
  public fun error(message: Any, cause: Throwable? = null): Nothing
  public fun expect(index: Int)
  public fun expectUnreached()

kotlinx-coroutines-core/js/test/TestBase.kt

@@ -6,10 +6,10 @@ package kotlinx.coroutines
 
 import kotlin.js.*
 
-public actual open class TestBase actual constructor() {
- public actual val isStressTest: Boolean = false
- public actual val stressTestMultiplier: Int = 1
+public actual val isStressTest: Boolean = false
+public actual val stressTestMultiplier: Int = 1
 
+public actual open class TestBase actual constructor() {
  private var actionIndex = 0
  private var finished = false
  private var error: Throwable? = null

kotlinx-coroutines-core/jvm/test/TestBase.kt

@@ -14,6 +14,18 @@ import kotlin.test.*
 
 private val VERBOSE = systemProp("test.verbose", false)
 
+/**
+ * Is `true` when running in a nightly stress test mode.
+ */
+public actual val isStressTest = System.getProperty("stressTest")?.toBoolean() ?: false
+
+public val stressTestMultiplierSqrt = if (isStressTest) 5 else 1
+
+/**
+ * Multiply various constants in stress tests by this factor, so that they run longer during nightly stress test.
+ */
+public actual val stressTestMultiplier = stressTestMultiplierSqrt * stressTestMultiplierSqrt
+
 /**
  * Base class for tests, so that tests for predictable scheduling of actions in multiple coroutines sharing a single
  * thread can be written. Use it like this:
@@ -34,18 +46,6 @@ private val VERBOSE = systemProp("test.verbose", false)
  * ```
  */
 public actual open class TestBase actual constructor() {
- /**
- * Is `true` when running in a nightly stress test mode.
- */
- public actual val isStressTest = System.getProperty("stressTest")?.toBoolean() ?: false
-
- public val stressTestMultiplierSqrt = if (isStressTest) 5 else 1
-
- /**
- * Multiply various constants in stress tests by this factor, so that they run longer during nightly stress test.
- */
- public actual val stressTestMultiplier = stressTestMultiplierSqrt * stressTestMultiplierSqrt
-
  private var actionIndex = AtomicInteger()
  private var finished = AtomicBoolean()
  private var error = AtomicReference<Throwable>()

kotlinx-coroutines-core/jvm/test/internal/LockFreeLinkedListAtomicLFStressTest.kt

@@ -5,7 +5,7 @@
 package kotlinx.coroutines.internal
 
 import kotlinx.atomicfu.LockFreedomTestEnvironment
-import kotlinx.coroutines.TestBase
+import kotlinx.coroutines.stressTestMultiplier
 import org.junit.Assert.*
 import org.junit.Test
 import java.util.*
@@ -16,7 +16,7 @@ import java.util.concurrent.atomic.AtomicReference
  * This stress test has 4 threads adding randomly to the list and them immediately undoing
  * this addition by remove, and 4 threads trying to remove nodes from two lists simultaneously (atomically).
  */
-class LockFreeLinkedListAtomicLFStressTest : TestBase() {
+class LockFreeLinkedListAtomicLFStressTest {
  private val env = LockFreedomTestEnvironment("LockFreeLinkedListAtomicLFStressTest")
 
  data class IntNode(val i: Int) : LockFreeLinkedListNode()

kotlinx-coroutines-core/jvm/test/internal/SegmentQueueTest.kt

@@ -1,6 +1,6 @@
 package kotlinx.coroutines.internal
 
-import kotlinx.coroutines.TestBase
+import kotlinx.coroutines.stressTestMultiplier
 import org.junit.Test
 import java.util.*
 import java.util.concurrent.CyclicBarrier
@@ -9,12 +9,11 @@ import kotlin.concurrent.thread
 import kotlin.random.Random
 import kotlin.test.assertEquals
 
-class SegmentQueueTest : TestBase() {
-
+class SegmentQueueTest {
  @Test
  fun simpleTest() {
  val q = SegmentBasedQueue<Int>()
- assertEquals( 1, q.numberOfSegments)
+ assertEquals(1, q.numberOfSegments)
  assertEquals(null, q.dequeue())
  q.enqueue(1)
  assertEquals(1, q.numberOfSegments)

kotlinx-coroutines-core/native/test/TestBase.kt

@@ -4,10 +4,10 @@
 
 package kotlinx.coroutines
 
-public actual open class TestBase actual constructor() {
- public actual val isStressTest: Boolean = false
- public actual val stressTestMultiplier: Int = 1
+public actual val isStressTest: Boolean = false
+public actual val stressTestMultiplier: Int = 1
 
+public actual open class TestBase actual constructor() {
  private var actionIndex = 0
  private var finished = false
  private var error: Throwable? = null