Rearrange stdlib unit tests across packages.

Rearrange JS stdlib unit tests.

libraries/stdlib/test/collections/ArraysTest.kt

@@ -17,7 +17,7 @@
 package test.collections
 
 import test.collections.behaviors.listBehavior
-import test.compare.STRING_CASE_INSENSITIVE_ORDER
+import test.comparisons.STRING_CASE_INSENSITIVE_ORDER
 import java.util.*
 import kotlin.test.*
 import org.junit.Test as test

libraries/stdlib/test/collections/CollectionJVMTest.kt

@@ -22,11 +22,11 @@ class CollectionJVMTest {
 
     @test fun removeAllWithDifferentEquality() {
         val data = listOf(IdentityData(1), IdentityData(1))
-        val list = data.toArrayList()
+        val list = data.toMutableList()
         list -= identitySetOf(data[0]) as Iterable<IdentityData>
         assertTrue(list.single() === data[1], "Identity contains should be used")
 
-        val list2 = data.toArrayList()
+        val list2 = data.toMutableList()
         list2 -= hashSetOf(data[0]) as Iterable<IdentityData>
         assertTrue(list2.isEmpty(), "Equality contains should be used")
 

libraries/stdlib/test/collections/CollectionTest.kt

@@ -20,8 +20,7 @@ import java.util.*
 import kotlin.test.*
 import org.junit.Test as test
 import test.collections.behaviors.*
-import test.compare.STRING_CASE_INSENSITIVE_ORDER
-import java.io.Serializable
+import test.comparisons.STRING_CASE_INSENSITIVE_ORDER
 import kotlin.comparisons.*
 
 class CollectionTest {
@@ -762,11 +761,11 @@ class CollectionTest {
     @test fun sortInPlace() {
         val data = listOf(11, 3, 7)
 
-        val asc = data.toArrayList()
+        val asc = data.toMutableList()
         asc.sort()
         assertEquals(listOf(3, 7, 11), asc)
 
-        val desc = data.toArrayList()
+        val desc = data.toMutableList()
         desc.sortDescending()
         assertEquals(listOf(11, 7, 3), desc)
     }

libraries/stdlib/test/collections/MutableCollectionsTest.kt

@@ -15,7 +15,7 @@ class MutableCollectionTest {
             }
 
     fun <T> testOperation(before: List<T>, after: List<T>, expectedModified: Boolean)
-            = testOperation(before, after, expectedModified, { it.toArrayList() })
+            = testOperation(before, after, expectedModified, { it.toMutableList() })
 
 
     @test fun addAll() {

libraries/stdlib/test/collections/ReversedViewsJVMTest.kt

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package collections
+package test.collections
 
 import kotlin.test.assertEquals
 import org.junit.Test as test

libraries/stdlib/test/collections/ReversedViewsTest.kt

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package collections
+package test.collections
 
 import test.collections.behaviors.listBehavior
 import test.collections.compare