fix null test

Author: sliceofapplepie

plugins/acl/dynamic-role-based/src/test/java/org/apache/cloudstack/acl/DynamicRoleBasedAPIAccessCheckerTest.java

@@ -40,6 +40,8 @@
 import com.cloud.user.UserVO;
 
 import org.apache.cloudstack.acl.RolePermissionEntity.Permission;
+import org.apache.cloudstack.utils.cache.LazyCache;
+import com.cloud.utils.Pair;
 
 import junit.framework.TestCase;
 
@@ -234,6 +236,10 @@ public void testCheckAccessAccountUsesCachedPermissions() throws Exception {
         cachePeriodField.setAccessible(true);
         cachePeriodField.set(apiAccessCheckerSpy, 1);
 
+        Field rpCacheField = DynamicRoleBasedAPIAccessChecker.class.getDeclaredField("rolePermissionsCache");
+        rpCacheField.setAccessible(true);
+        rpCacheField.set(apiAccessCheckerSpy, new LazyCache<Long, Pair<Role, List<RolePermission>>>(32, 1, apiAccessCheckerSpy::getRolePermissions));
+
         final String allowedApiName = "someAllowedApi";
         final RolePermission permission = new RolePermissionVO(1L, allowedApiName, Permission.ALLOW, null);
         Mockito.when(roleServiceMock.findAllPermissionsBy(Mockito.anyLong())).thenReturn(Collections.singletonList(permission));
@@ -301,6 +307,10 @@ public void testGetApisAllowedToAccountUsesCachedPermissions() {
             cachePeriodField.setAccessible(true);
             cachePeriodField.set(apiAccessCheckerSpy, 1);
 
+            Field rpCacheField = DynamicRoleBasedAPIAccessChecker.class.getDeclaredField("rolePermissionsCache");
+            rpCacheField.setAccessible(true);
+            rpCacheField.set(apiAccessCheckerSpy, new LazyCache<Long, Pair<Role, List<RolePermission>>>(32, 1, apiAccessCheckerSpy::getRolePermissions));
+
             final RolePermission permission = new RolePermissionVO(1L, "api1", Permission.ALLOW, null);
             Mockito.when(roleServiceMock.findAllPermissionsBy(Mockito.anyLong())).thenReturn(Collections.singletonList(permission));