[junit] 測試網路連結

TestUtils.java

import java.io.IOException;

import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.client.methods.RequestBuilder;
import org.apache.http.impl.client.HttpClients;
import org.junit.Assume;

/**
 * 測試網路連結
 */
public class TestUtils {
    private static final String TEST_URL = "http://www.google.com";
    private static final int SOCKET_TIMEOUT = 2000;
    private static final int CONNECT_TIMEOUT = 2000;

    public static void assumeInternetAlive() {
        Assume.assumeTrue(isInternetAlive());
    }

    private static boolean isInternetAlive() {
        try {
            HttpResponse response = getHttpResponse(TEST_URL);
            return response != null && 200 == response.getStatusLine().getStatusCode();
        } catch (IOException ex) {
            return false;
        }
    }

    private static HttpResponse getHttpResponse(String url) throws IOException {
        HttpClient client = HttpClients.createDefault();
        HttpUriRequest request = RequestBuilder.get().setUri(url).setConfig(getRequestConfig()).build();
        return client.execute(request);
    }

    private static RequestConfig getRequestConfig() {
        return RequestConfig.custom().setSocketTimeout(SOCKET_TIMEOUT).setConnectTimeout(CONNECT_TIMEOUT).build();
    }
}

for junit 用,測試網路連線置放於 Test Method 中,若網路連線不通則該 Test Case 會略過,也可以擺放於 @before中,每項測試執行時檢查