Always append slash after Postgres db endpoint (#209)

Author: simonmarty

src/main/java/com/amazonaws/secretsmanager/sql/AWSSecretsManagerPostgreSQLDriver.java

@@ -116,8 +116,11 @@ public String constructUrlFromEndpointPortDatabase(String endpoint, String port,
         if (!StringUtils.isNullOrEmpty(port)) {
             url += ":" + port;
         }
+
+        url += "/";
+
         if (!StringUtils.isNullOrEmpty(dbname)) {
-            url += "/" + dbname;
+            url += dbname;
         }
         return url;
     }

src/test/java/com/amazonaws/secretsmanager/sql/AWSSecretsManagerPostgreSQLDriverTest.java

@@ -93,7 +93,7 @@ public void test_constructUrlNullPort() {
     @Test
     public void test_constructUrlNullDatabase() {
         String url = sut.constructUrlFromEndpointPortDatabase("test-endpoint", "1234", null);
-        assertEquals(url, "jdbc:postgresql://test-endpoint:1234");
+        assertEquals(url, "jdbc:postgresql://test-endpoint:1234/");
     }
 
     @Test