Add more tests

remove "sendQuery" on function
sendQuery now return QueryResult
remove null on queryError message

src/main/kotlin/fr/postgresjson/connexion/Query.kt

@@ -76,10 +76,14 @@ class Query(override val name: String, private val sql: String, override val con
     /**
      * Warning: this method not use prepared statement
      */
-    override fun sendQuery(values: List<Any?>): Int = connection.sendQuery(sql, values)
+    fun sendQuery(values: List<Any?>): QueryResult = connection.sendQuery(sql, values)
 
     /**
      * Warning: this method not use prepared statement
      */
-    override fun sendQuery(values: Map<String, Any?>): Int = connection.sendQuery(sql, values)
+    fun sendQuery(values: Map<String, Any?>): QueryResult = connection.sendQuery(sql, values)
+    /**
+     * Warning: this method not use prepared statement
+     */
+    fun sendQuery(vararg values: Pair<String, Any?>): QueryResult = sendQuery(values.toMap())
 }