better method name

src/main/java/com/zaxxer/hikari/HikariConfig.java

@@ -42,7 +42,7 @@ import com.codahale.metrics.health.HealthCheckRegistry;
 import com.zaxxer.hikari.metrics.MetricsTrackerFactory;
 import com.zaxxer.hikari.util.PropertyElf;
 
-import static com.zaxxer.hikari.util.UtilityElf.nullOrNotEmpty;
+import static com.zaxxer.hikari.util.UtilityElf.getNullIfEmpty;
 
 public class HikariConfig implements HikariConfigMXBean
 {
@@ -749,14 +749,14 @@ public class HikariConfig implements HikariConfigMXBean
       validateNumerics();
 
       // treat empty property as null
-      catalog = nullOrNotEmpty(catalog);
-      connectionInitSql = nullOrNotEmpty(connectionInitSql);
-      connectionTestQuery = nullOrNotEmpty(connectionTestQuery);
-      transactionIsolationName = nullOrNotEmpty(transactionIsolationName);
-      dataSourceClassName = nullOrNotEmpty(dataSourceClassName);
-      dataSourceJndiName = nullOrNotEmpty(dataSourceJndiName);
-      driverClassName = nullOrNotEmpty(driverClassName);
-      jdbcUrl = nullOrNotEmpty(jdbcUrl);
+      catalog = getNullIfEmpty(catalog);
+      connectionInitSql = getNullIfEmpty(connectionInitSql);
+      connectionTestQuery = getNullIfEmpty(connectionTestQuery);
+      transactionIsolationName = getNullIfEmpty(transactionIsolationName);
+      dataSourceClassName = getNullIfEmpty(dataSourceClassName);
+      dataSourceJndiName = getNullIfEmpty(dataSourceJndiName);
+      driverClassName = getNullIfEmpty(driverClassName);
+      jdbcUrl = getNullIfEmpty(jdbcUrl);
 
       if (poolName == null) {
          poolName = "HikariPool-" + POOL_NUMBER.getAndIncrement();

src/main/java/com/zaxxer/hikari/util/UtilityElf.java

@@ -35,7 +35,7 @@ public final class UtilityElf
     *
     * @return null if string is null or empty
    */
-   public static String nullOrNotEmpty(final String text)
+   public static String getNullIfEmpty(final String text)
    {
       return text == null ? null : text.trim().isEmpty() ? null : text.trim();
    }

src/test/java/com/zaxxer/hikari/pool/ShutdownTest.java

@@ -41,13 +41,16 @@ public class ShutdownTest
    @Before
    public void beforeTest()
    {
-      TestElf.setSlf4jLogLevel(ShutdownTest.class, Level.DEBUG);
+      TestElf.setSlf4jLogLevel(PoolBase.class, Level.DEBUG);
+      TestElf.setSlf4jLogLevel(HikariPool.class, Level.DEBUG);
       StubConnection.count.set(0);
    }
 
    @After
    public void afterTest()
    {
+      TestElf.setSlf4jLogLevel(PoolBase.class, Level.WARN);
+      TestElf.setSlf4jLogLevel(HikariPool.class, Level.WARN);
       StubConnection.slowCreate = false;
    }