Add tests for Find functions

src/main/kotlin/Op.kt

@@ -21,7 +21,7 @@ enum class Op(val sql: String) {
     /** Compare existence in a list of values */
     IN("IN"),
     /** Compare overlap between an array and a list of values */
-    IN_ARRAY("?|"),
+    IN_ARRAY("??|"),
     /** Compare existence */
     EXISTS("IS NOT NULL"),
     /** Compare nonexistence */

src/main/kotlin/Parameters.kt

@@ -86,6 +86,7 @@ object Parameters {
 
         return try {
             replaceNamesInQuery(query, parameters)
+                //.also(::println)
                 .let { conn.prepareStatement(it) }
                 .also { stmt ->
                     replacements.sortedBy { it.first }