stdlib tests: move JVM-only test source files

libraries/stdlib/jvm/test/io/IOStreams.kt

@@ -0,0 +1,42 @@
+@file:kotlin.jvm.JvmVersion
+package test.io
+
+import kotlin.test.*
+import java.io.Writer
+import java.io.BufferedReader
+
+class IOStreamsTest {
+    @Test fun testGetStreamOfFile() {
+        val tmpFile = createTempFile()
+        var writer: Writer? = null
+        try {
+            writer = tmpFile.outputStream().writer()
+            writer.write("Hello, World!")
+        } finally {
+            writer?.close()
+        }
+        val act: String?
+        var reader: BufferedReader? = null
+        try {
+            reader = tmpFile.inputStream().reader().buffered()
+            act = reader.readLine()
+        } finally {
+            reader?.close()
+        }
+        assertEquals("Hello, World!", act)
+    }
+
+    @Test fun testInputStreamIterator() {
+        val x = ByteArray(10) { it.toByte() }
+
+        val result = mutableListOf<Byte>()
+
+        x.inputStream().buffered().use { stream ->
+            for(b in stream) {
+                result += b
+            }
+        }
+
+        assertEquals(x.asList(), result)
+    }
+}