Spring Boot @Value is not being populated..why?

I am trying to get a value from my application.properties in Spring Boot using @Value but no matter what I do it is always null.

I am doing this in my HTTPClient test class. I have tried using environment variables, propertySource, PostConstruct, using getters and setters, and anything else I could find online but it does not seem to be populating at all... My test class is in src/test/java and the application.properties is in src/test/resources. I do also have a application.properties in my src/main/java but that is in a completely different folder so it should not be affecting it.

Here is my code:

import static org.junit.Assert.*;
import java.io.IOException;
import java.util.Map;
import javax.annotation.PostConstruct;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.fluent.Request;
import org.apache.http.entity.ContentType;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.context.ConfigurableApplicationContext;
import com.google.gson.Gson;
import com.nulogix.billing.configuration.EndPointTestConfiguration;
import com.nulogix.billing.mockserver.MockServerApp;

@SpringBootTest(classes = EndPointTestConfiguration.class)
public class HttpClientTest {
    @Value("${billing.engine.address}")
    private String billingEngineAddress;
    @Value("${billing.engine.port}")
    private String billingEnginePort;


    @PostConstruct
    private void customInit() {
        System.out.print(billingEngineAddress);
        System.out.print(billingEnginePort);

    }

    public static final String request_bad  = "ncs|56-2629193|1972-03-28|20190218|77067|6208|3209440|self|";
    public static final String request_good = "ncs|56-2629193|1972-03-28|20190218|77067|6208|3209440|self|-123|-123|-123|0.0|0.0|0.0|0.0|0.0|0.0|0.0";



    @Test
    public void test_bad() throws ClientProtocolException, IOException {
        // missing parameter

        String result = Request.Post("http://" + billingEngineAddress + ":" + billingEnginePort)
                .connectTimeout(2000)
                .socketTimeout(2000)
                .bodyString(request_bad, ContentType.TEXT_PLAIN)
                .execute().returnContent().asString();

        Map<?, ?> resultJsonObj = new Gson().fromJson(result, Map.class);

        // ensure the key exists
        assertEquals(resultJsonObj.containsKey("status"), true);
        assertEquals(resultJsonObj.containsKey("errorMessage"), true);

        // validate values
        Boolean status = (Boolean) resultJsonObj.get("status");
        assertEquals(status, false);
        String errorMessage = (String) resultJsonObj.get("errorMessage");
        assertEquals(errorMessage.contains("Payload has incorrect amount of parts"), true);

    }


    @Test
    public void test_good() throws ClientProtocolException, IOException {
        String result = Request.Post("http://" + billingEngineAddress + ":" + billingEnginePort)
                .connectTimeout(2000)
                .socketTimeout(2000)
                .bodyString(request_good, ContentType.TEXT_PLAIN)
                .execute().returnContent().asString();

        Map<?, ?> resultJsonObj = new Gson().fromJson(result, Map.class);

        // ensure the key exists
        assertEquals(resultJsonObj.containsKey("status"), true);
        assertEquals(resultJsonObj.containsKey("errorMessage"), false);
        assertEquals(resultJsonObj.containsKey("HasCopay"), true);
        assertEquals(resultJsonObj.containsKey("CopayAmount"), true);
        assertEquals(resultJsonObj.containsKey("HasCoinsurance"), true);
        assertEquals(resultJsonObj.containsKey("CoinsuranceAmount"), true);
        assertEquals(resultJsonObj.containsKey("version"), true);

        // validate values
        Boolean status = (Boolean) resultJsonObj.get("status");
        assertEquals(status, true);
        String version = (String) resultJsonObj.get("version");
        assertEquals(version, "0.97");

    }

}

I am getting the values from my application.properties to get the IP address and port and test my Request.post.

Here is my application.properties

server.port=9119
server.ssl.enabled=false
logging.config=classpath:logback-spring.xml
logging.file=messages
logging.file.max-size=50MB
logging.level.com.nulogix=DEBUG
billing.engine.address=127.0.0.1
billing.engine.port=9119
billing.engine.api.version=0.97
billing.engine.core.name=Patient_Responsibility