Spring application context bean creation issue with latest spring version

Question

I have a project which uses an old spring.jar (1.2.6),from this project, I am expected to call a newer version (spring version 5.0.7) spring boot project's method. Below is the way I am creating my bean in old version project.

I am getting NullPointer exception while creating the Autowired bean.

Create bean from XML:spring test-context.xml:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "qvc-spring-beans.dtd">
<beans>
<bean name="testPci" class="com.test.client.TestPci">
</bean>
</beans>

sampleParent-context.xml:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans SYSTEM "spring-beans.dtd">

<beans> 
        
    <import resource="classpath:/com/test/test-context.xml" />
    <bean id="classA" class="com.test.A" >      
        <property name="testPci">
            <ref bean="testPci"/>
        </property>
    </bean>
</beans>

Java code old spring project:

package com.test;
public class A{

private TestPci testPci;

private ApplicationContext ctx;

public TestPci getTestService() {
        if (!StringUtils.isValid(ctx)) {
            ctx = new ClassPathXmlApplicationContext("./com/test/test-context.xml");
            
        }

        if (!StringUtils.isValid(this.testPci)) {
            if (StringUtils.isValid(ctx)) {
                testPci = (TestPci) ctx.getBean("testPci");
                TestPci testPci = (TestPci) ctx
                        .getBean("testPci");
                this.setSecureTestService(testPci);
            }
        }
        return this.getSecureTestService();
    }
    
     public TestPci getSecureTestService() {
        return testPci;
    }

    public void setSecureTestService(TestPci testPci) {
        this.testPci = testPci;
    }
    
public void methodA(){
//Calling newer code form old spring code:
testPci.testing("1", "2", "3");
}
    
    }

Calling "TestPci" class as above, but when trying to call using the above, it actually calls the "TestPci"."testing" method. But the object autowired as "testWebClientService" is returning as null. I would like to get the object created instead it returns null.

New spring version class:

@Service
@EnableConfigurationProperties(TestWebClientProperties.class)
@Configurable
public class TestPci{
    
    @Autowired
    private TestWebClientService testWebClientService;
        
    
    public Map<String, String> testing(String a, String b, String c) throws Exception {
        Map<String, String> map =  testWebClientService.find(a, b, c);
        System.out.println("**=="+map.get(0));
        return map;
    }
    }

Adding junit which is used to call the TestPci class from newer version of spring:

@RunWith(SpringJUnit4ClassRunner.class)
@EnableConfigurationProperties(TestWebClientProperties.class)
@SpringBootTest(classes = { TestWebClientService.class, TestPci.class }, webEnvironment = WebEnvironment.NONE)
public class TestJunit {
    
    
    @MockBean(name="restTemplate")
     public RestTemplate              restTemplate;
     
     @Autowired
     private TestPci testPci;
    
    @Test
    public void ff() throws Exception {
        testPci.testing("1","1","1");
    }

}