Create ImageToTextAsyncTest.java (#6271)

Unit Test to test the Image to Text functionality in InvokeModelWithResponseStream:invokeClaude3Sonnet method.

javav2/example_code/bedrock-runtime/src/test/java/ImageToTextAsyncTest.java

@@ -0,0 +1,39 @@
+// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+
+import com.example.bedrockruntime.InvokeModelWithResponseStream;
+
+
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestInstance;
+
+import java.io.IOException;
+import java.net.URL;
+import java.util.Base64;
+
+@TestInstance(TestInstance.Lifecycle.PER_METHOD)
+class ImageToTextAsyncTest extends TestBase {
+
+    @Test
+    @Tag("IntegrationTest")
+    void InvokeClaude3WithResponseStream() {
+        var silent = false;
+        String sampleImageURL = "https://upload.wikimedia.org/wikipedia/commons/thumb/8/89/PD-US_table_updated.svg/431px-PD-US_table_updated.svg.png";
+        var generatedText = InvokeModelWithResponseStream.invokeClaude3Sonnet(encodeImage(sampleImageURL), silent);
+        ;
+        assertNotNullOrEmpty(generatedText);
+        System.out.println("Test async invoke Claude with response stream passed.");
+    }
+    public static String encodeImage(String imageUrl) {
+        byte[] imageBytes = new byte[8];
+        try (var imageResponse = new URL(imageUrl).openStream()) {
+            imageBytes = org.apache.commons.io.IOUtils.toByteArray(imageResponse); // Use Apache Commons IO for efficient handling
+        } catch (IOException ioException) {
+            System.err.println("Error: " + ioException.getMessage());
+        }
+        // Base64 encode the image bytes
+        return Base64.getEncoder().encodeToString(imageBytes);
+    }
+}