diff --git a/bigtop-manager-stack/bigtop-manager-stack-infra/src/test/java/org/apache/bigtop/manager/stack/infra/v1_0_0/grafana/GrafanaServerScriptTest.java b/bigtop-manager-stack/bigtop-manager-stack-infra/src/test/java/org/apache/bigtop/manager/stack/infra/v1_0_0/grafana/GrafanaServerScriptTest.java
index 813a690b..d3232ecd 100644
--- a/bigtop-manager-stack/bigtop-manager-stack-infra/src/test/java/org/apache/bigtop/manager/stack/infra/v1_0_0/grafana/GrafanaServerScriptTest.java
+++ b/bigtop-manager-stack/bigtop-manager-stack-infra/src/test/java/org/apache/bigtop/manager/stack/infra/v1_0_0/grafana/GrafanaServerScriptTest.java
@@ -18,15 +18,48 @@
  */
 package org.apache.bigtop.manager.stack.infra.v1_0_0.grafana;
 
+import org.apache.bigtop.manager.stack.core.spi.param.Params;
 import org.junit.jupiter.api.Test;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
 
 public class GrafanaServerScriptTest {
 
+    private final GrafanaServerScript grafanaServerScript = new GrafanaServerScript();
+
     @Test
     public void testGetComponentName() {
-        GrafanaServerScript grafanaServerScript = new GrafanaServerScript();
         assertEquals("grafana_server", grafanaServerScript.getComponentName());
     }
+
+    @Test
+    public void testAddParamsNull() {
+        Params params = null;
+        assertThrows(NullPointerException.class, () -> grafanaServerScript.add(params));
+    }
+
+    @Test
+    public void testConfigureParamsNull() {
+        Params params = null;
+        assertThrows(NullPointerException.class, () -> grafanaServerScript.configure(params));
+    }
+
+    @Test
+    public void testStartParamsNull() {
+        Params params = null;
+        assertThrows(NullPointerException.class, () -> grafanaServerScript.start(params));
+    }
+
+    @Test
+    public void testStopParamsNull() {
+        Params params = null;
+        assertThrows(NullPointerException.class, () -> grafanaServerScript.stop(params));
+    }
+
+    @Test
+    public void testStatusParamsNull() {
+        Params params = null;
+        assertThrows(NullPointerException.class, () -> grafanaServerScript.status(params));
+    }
 }
diff --git a/bigtop-manager-stack/bigtop-manager-stack-infra/src/test/java/org/apache/bigtop/manager/stack/infra/v1_0_0/mysql/MySQLServerScriptTest.java b/bigtop-manager-stack/bigtop-manager-stack-infra/src/test/java/org/apache/bigtop/manager/stack/infra/v1_0_0/mysql/MySQLServerScriptTest.java
index 33aab4a1..ddd40ccb 100644
--- a/bigtop-manager-stack/bigtop-manager-stack-infra/src/test/java/org/apache/bigtop/manager/stack/infra/v1_0_0/mysql/MySQLServerScriptTest.java
+++ b/bigtop-manager-stack/bigtop-manager-stack-infra/src/test/java/org/apache/bigtop/manager/stack/infra/v1_0_0/mysql/MySQLServerScriptTest.java
@@ -18,15 +18,48 @@
  */
 package org.apache.bigtop.manager.stack.infra.v1_0_0.mysql;
 
+import org.apache.bigtop.manager.stack.core.spi.param.Params;
 import org.junit.jupiter.api.Test;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
 
 class MySQLServerScriptTest {
+    
+    private final MySQLServerScript mysqlServerScript = new MySQLServerScript();
 
     @Test
     void testGetComponentName() {
-        MySQLServerScript mysqlServerScript = new MySQLServerScript();
         assertEquals("mysql_server", mysqlServerScript.getComponentName());
     }
+
+    @Test
+    public void testAddParamsNull() {
+        Params params = null;
+        assertThrows(NullPointerException.class, () -> mysqlServerScript.add(params));
+    }
+
+    @Test
+    public void testConfigureParamsNull() {
+        Params params = null;
+        assertThrows(NullPointerException.class, () -> mysqlServerScript.configure(params));
+    }
+
+    @Test
+    public void testStartParamsNull() {
+        Params params = null;
+        assertThrows(NullPointerException.class, () -> mysqlServerScript.start(params));
+    }
+
+    @Test
+    public void testStopParamsNull() {
+        Params params = null;
+        assertThrows(NullPointerException.class, () -> mysqlServerScript.stop(params));
+    }
+
+    @Test
+    public void testStatusParamsNull() {
+        Params params = null;
+        assertThrows(NullPointerException.class, () -> mysqlServerScript.status(params));
+    }
 }
diff --git a/bigtop-manager-stack/bigtop-manager-stack-infra/src/test/java/org/apache/bigtop/manager/stack/infra/v1_0_0/prometheus/PrometheusServerScriptTest.java b/bigtop-manager-stack/bigtop-manager-stack-infra/src/test/java/org/apache/bigtop/manager/stack/infra/v1_0_0/prometheus/PrometheusServerScriptTest.java
index e506c46f..5e916787 100644
--- a/bigtop-manager-stack/bigtop-manager-stack-infra/src/test/java/org/apache/bigtop/manager/stack/infra/v1_0_0/prometheus/PrometheusServerScriptTest.java
+++ b/bigtop-manager-stack/bigtop-manager-stack-infra/src/test/java/org/apache/bigtop/manager/stack/infra/v1_0_0/prometheus/PrometheusServerScriptTest.java
@@ -18,15 +18,48 @@
  */
 package org.apache.bigtop.manager.stack.infra.v1_0_0.prometheus;
 
+import org.apache.bigtop.manager.stack.core.spi.param.Params;
 import org.junit.jupiter.api.Test;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
 
 public class PrometheusServerScriptTest {
+    
+    private final PrometheusServerScript prometheusServerScript = new PrometheusServerScript();
 
     @Test
     public void testGetComponentName() {
-        PrometheusServerScript script = new PrometheusServerScript();
-        assertEquals("prometheus_server", script.getComponentName());
+        assertEquals("prometheus_server", prometheusServerScript.getComponentName());
+    }
+
+    @Test
+    public void testAddParamsNull() {
+        Params params = null;
+        assertThrows(NullPointerException.class, () -> prometheusServerScript.add(params));
+    }
+
+    @Test
+    public void testConfigureParamsNull() {
+        Params params = null;
+        assertThrows(NullPointerException.class, () -> prometheusServerScript.configure(params));
+    }
+
+    @Test
+    public void testStartParamsNull() {
+        Params params = null;
+        assertThrows(NullPointerException.class, () -> prometheusServerScript.start(params));
+    }
+
+    @Test
+    public void testStopParamsNull() {
+        Params params = null;
+        assertThrows(NullPointerException.class, () -> prometheusServerScript.stop(params));
+    }
+
+    @Test
+    public void testStatusParamsNull() {
+        Params params = null;
+        assertThrows(NullPointerException.class, () -> prometheusServerScript.status(params));
     }
 }