Refactor: extract JVM-specific tests into separate files

Make KotlinVersion random comparison test running in JS

libraries/stdlib/test/utils/AssertionsJVMTest.kt

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+@file:JvmVersion
+package test.utils
+
+import kotlin.test.*
+
+class AssertionsJVMTest() {
+
+    @Test fun passingAssert() {
+        assert(true)
+        var called = false
+        assert(true) { called = true; "some message" }
+
+        assertFalse(called)
+    }
+
+
+    @Test fun failingAssert() {
+        val error = assertFailsWith<AssertionError> {
+            assert(false)
+        }
+        assertEquals("Assertion failed", error.message)
+    }
+
+
+    @Test fun failingAssertWithMessage() {
+        val error = assertFailsWith<AssertionError> {
+            assert(false) { "Hello" }
+        }
+        assertEquals("Hello", error.message)
+    }
+
+}

libraries/stdlib/test/utils/KotlinVersionTest.kt

@@ -1,5 +1,6 @@
 package test.utils
 
+import test.randomInt
 import kotlin.test.*
 
 
@@ -55,10 +56,8 @@ class KotlinVersionTest {
         }
     }
 
-    @JvmVersion // until there's random in JS
     @Test fun randomVersionComparison() {
-        val random = java.util.Random()
-        fun randomComponent(): Int = random.nextInt(KotlinVersion.MAX_COMPONENT_VALUE + 1)
+        fun randomComponent(): Int = randomInt(KotlinVersion.MAX_COMPONENT_VALUE + 1)
         fun randomVersion() = KotlinVersion(randomComponent(), randomComponent(), randomComponent())
         repeat(1000) {
             val v1 = randomVersion()

libraries/stdlib/test/utils/PreconditionsTest.kt

@@ -89,33 +89,6 @@ class PreconditionsTest() {
         }
     }
 
-    @kotlin.jvm.JvmVersion
-    @Test fun passingAssert() {
-        assert(true)
-        var called = false
-        assert(true) { called = true; "some message" }
-
-        assertFalse(called)
-    }
-
-
-    @kotlin.jvm.JvmVersion
-    @Test fun failingAssert() {
-        val error = assertFailsWith<AssertionError> {
-            assert(false)
-        }
-        assertEquals("Assertion failed", error.message)
-    }
-
-
-    @kotlin.jvm.JvmVersion
-    @Test fun failingAssertWithMessage() {
-        val error = assertFailsWith<AssertionError> {
-            assert(false) { "Hello" }
-        }
-        assertEquals("Hello", error.message)
-    }
-
     @Test fun error() {
         val error = assertFailsWith<IllegalStateException> {
             error("There was a problem")