Unit Test For S3 Presigned Api Cập Nhật Mới

To create unit tests for an S3 PreSigned API, you can use a testing framework like JUnit or Mockito, and follow these steps:

1. Instantiate an S3 client object with your AWS credentials and the region where your S3 bucket is located.
2. Create a mock request object with the necessary parameters, such as the HTTP method, bucket name, object key, and expiration time.
3. Use the S3 client’s generatePresignedUrl method to generate a pre-signed URL for the mock request object.
4. Assert that the generated URL contains the correct bucket name, object key, and expiration time.
5. Make a HTTP request to the generated URL and assert that the response is successful and contains the expected content.

Here’s an example implementation using JUnit:

java
import static org.junit.Assert.assertEquals;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Date;
import org.junit.Test;
import com.amazonaws.HttpMethod;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3ClientBuilder;
import com.amazonaws.services.s3.model.GeneratePresignedUrlRequest;

public class S3PreSignedAPITest {

    private static final String BUCKET_NAME = "my-s3-bucket";
    private static final String OBJECT_KEY = "my-object-key";
    private static final int EXPIRATION_TIME_IN_SECONDS = 3600;

    @Test
    public void testGeneratePreSignedUrl() throws Exception {
        AmazonS3 s3Client = AmazonS3ClientBuilder.defaultClient();

        Date expirationDate = new Date(System.currentTimeMillis() + (EXPIRATION_TIME_IN_SECONDS * 1000));
        GeneratePresignedUrlRequest generatePresignedUrlRequest = new GeneratePresignedUrlRequest(BUCKET_NAME, OBJECT_KEY)
                .withMethod(HttpMethod.GET)
                .withExpiration(expirationDate);

        URL preSignedUrl = s3Client.generatePresignedUrl(generatePresignedUrlRequest);

        // Assert that the generated URL contains the correct bucket name, object key, and expiration time
        assertEquals(BUCKET_NAME, preSignedUrl.getHost());
        assertEquals("/" + OBJECT_KEY, preSignedUrl.getPath());
        assertEquals(EXPIRATION_TIME_IN_SECONDS, (preSignedUrl.getQuery().split("&Expires=")[1]).split("&")[0]);

        // Make a HTTP request to the generated URL and assert that the response is successful and contains the expected content
        HttpURLConnection connection = (HttpURLConnection) preSignedUrl.openConnection();
        connection.setRequestMethod("GET");
        assertEquals(HttpURLConnection.HTTP_OK, connection.getResponseCode());
        // Add additional assertions here based on the expected content of the object
    }
}

This test generates a pre-signed URL for a GET request to an S3 object, and then makes a HTTP request to the generated URL to ensure that the response is successful and contains the expected content. You can modify the test to generate pre-signed URLs for other HTTP methods and add additional assertions as necessary.