fix unit test for TableRuleTest. (#5032)

sharding-core/sharding-core-common/src/test/java/org/apache/shardingsphere/core/rule/TableRuleTest.java

@@ -29,6 +29,7 @@ import org.apache.shardingsphere.spi.keygen.KeyGenerateAlgorithm;
 import org.apache.shardingsphere.spi.type.TypedSPIRegistry;
 import org.apache.shardingsphere.underlying.common.config.exception.ShardingSphereConfigurationException;
 import org.apache.shardingsphere.underlying.common.rule.DataNode;
+import org.junit.BeforeClass;
 import org.junit.Test;
 
 import java.util.Arrays;
@@ -45,6 +46,11 @@ import static org.junit.Assert.assertTrue;
 
 public final class TableRuleTest {
     
+    @BeforeClass
+    public static void beforeClass() {
+        ShardingSphereServiceLoader.register(KeyGenerateAlgorithm.class);
+    }
+    
     @Test
     public void assertCreateMinTableRule() {
         TableRuleConfiguration tableRuleConfig = new TableRuleConfiguration("LOGIC_TABLE");