moved the stdlib tests into the same directory as the stdlib, so it works a bit better with maven support in IDEA

libraries/stdlib/test/IoTest.kt

@@ -0,0 +1,74 @@
+package test.collections
+
+import kotlin.test.*
+
+import kotlin.io.*
+import kotlin.util.*
+import java.io.*
+import java.util.*
+import junit.framework.TestCase
+
+class IoTest() : TestCase() {
+  fun testLineIteratorWithManualClose() {
+    val reader = sample().buffered()
+    try {
+      val list = reader.lineIterator().toArrayList()
+      assertEquals(arrayList("Hello", "World"), list)
+    } finally {
+      reader.close()
+    }
+  }
+
+  fun sample() : Reader {
+    return StringReader("Hello\nWorld");
+  }
+
+  fun testLineIterator() {
+    // TODO we should maybe zap the useLines approach as it encourages
+    // use of iterators which don't close the underlying stream
+    val list1 = sample().useLines{it.toArrayList()}
+    val list2 = sample().useLines<ArrayList<String>>{it.toArrayList()}
+
+    assertEquals(arrayList("Hello", "World"), list1)
+    assertEquals(arrayList("Hello", "World"), list2)
+  }
+
+  fun testForEach() {
+    val list = ArrayList<String>()
+    val reader = sample().buffered()
+
+    reader.use{
+      while (true) {
+        val line = it.readLine()
+        if (line != null)
+          list.add(line)
+        else
+          break
+      }
+    }
+
+    assertEquals(arrayList("Hello", "World"), list)
+  }
+
+  fun testForEachLine() {
+    val list = ArrayList<String>()
+    val reader = sample()
+
+    /* TODO would be nicer maybe to write this as
+        reader.lines.forEach { ... }
+
+      as we could one day maybe one day write that as
+        for (line in reader.lines)
+
+      if the for(elem in thing) {...} statement could act as syntax sugar for
+        thing.forEach{ elem -> ... }
+
+      if thing is not an Iterable/array/Iterator but has a suitable forEach method
+    */
+    reader.forEachLine{
+      list.add(it)
+    }
+
+    assertEquals(arrayList("Hello", "World"), list)
+  }
+}