moved the Map<String,String>.toProperties() helper function into the standard library and added a test case

libraries/kotlin-jdbc/src/main/kotlin/kotlin/jdbc/Connections.kt

@@ -6,16 +6,6 @@ import java.math.BigDecimal
 import java.util.Map
 import java.util.Properties
 
-private fun Map<String, String>.toProperties() : Properties {
-    val p = Properties()
-
-    this.keySet().forEach {
-        p.put(it, this[it])
-    }
-
-    return p
-}
-
 /**
  * create connection for the specified jdbc url with no credentials
  */

libraries/stdlib/src/kotlin/JUtilMapsJVM.kt

@@ -7,6 +7,7 @@ import java.util.Map
 import java.util.Map.Entry as JEntry
 import java.util.SortedMap
 import java.util.TreeMap
+import java.util.Properties
 
 // Map APIs
 
@@ -31,6 +32,19 @@ public inline fun <K,V> java.util.Map<K,V>.toSortedMap(): SortedMap<K,V> = toMap
 public inline fun <K,V> java.util.Map<K,V>.toSortedMap(comparator: Comparator<K>): SortedMap<K,V> = toMap<K,V>(TreeMap(comparator)) as SortedMap<K,V>
 
 
+/**
+ * Converts this [[Map]] to a [[Properties]] object
+ *
+ * @includeFunctionBody ../../test/MapTest.kt toProperties
+ */
+public inline fun Map<String, String>.toProperties(): Properties {
+    val answer = Properties()
+    for (e in this) {
+        answer.put(e.key, e.value)
+    }
+    return answer
+}
+
 /**
  * Returns a new List containing the results of applying the given *transform* function to each [[Map.Entry]] in this [[Map]]
  *

libraries/stdlib/test/MapTest.kt

@@ -187,4 +187,12 @@ class MapTest {
     }
     */
 
+    test fun toProperties() {
+        val map = hashMap("a" to "A", "b" to "B")
+        val prop = map.toProperties()
+        assertEquals(2, prop.size)
+        assertEquals("A", prop.getProperty("a", "fail"))
+        assertEquals("B", prop.getProperty("b", "fail"))
+    }
+
 }