Libraries written in Kotlin are factored out into a separate project

libraries/testlib/test/MapTest.kt

@@ -0,0 +1,53 @@
+package test.collections
+
+import kotlin.test.*
+
+// TODO can we avoid importing all this stuff by default I wonder?
+// e.g. making println and the collection builder methods public by default?
+import kotlin.*
+import kotlin.io.*
+import kotlin.util.*
+import java.util.*
+import junit.framework.TestCase
+
+class MapTest() : TestCase() {
+    val data: java.util.Map<String, Int> = java.util.HashMap<String, Int>()
+
+    fun testGetOrElse() {
+        val a = data.getOrElse("foo"){2}
+        assertEquals(2, a)
+
+        val b = data.getOrElse("foo"){3}
+        assertEquals(3, b)
+        assertEquals(0, data.size())
+    }
+
+    fun testGetOrPut() {
+        val a = data.getOrPut("foo"){2}
+        assertEquals(2, a)
+
+        val b = data.getOrPut("foo"){3}
+        assertEquals(2, b)
+
+        assertEquals(1, data.size())
+    }
+
+    fun testSizeAndEmpty() {
+        assertTrue{ data.empty }
+        // TODO using size breaks a test case
+        assertEquals(data.size(), 0)
+    }
+
+    fun testSetViaIndexOperators() {
+        val map = java.util.HashMap<String, String>()
+        assertTrue{ map.empty }
+        // TODO using size breaks a test case
+        assertEquals(map.size(), 0)
+
+        map["name"] = "James"
+
+        assertTrue{ !map.empty }
+        assertEquals(map.size(), 1)
+        assertEquals("James", map["name"])
+    }
+}