Prevent Name collisions on tests (GoogleCloudPlatform#1466)

Author: nnegrey

vision/automl/src/test/java/com/google/cloud/vision/samples/automl/DatasetApiIT.java

@@ -21,6 +21,7 @@
 import java.io.ByteArrayOutputStream;
 import java.io.PrintStream;
 
+import java.util.UUID;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
@@ -35,7 +36,6 @@ public class DatasetApiIT {
  private static final String PROJECT_ID = "java-docs-samples-testing";
  private static final String BUCKET = PROJECT_ID + "-vcm";
  private static final String COMPUTE_REGION = "us-central1";
- private static final String DATASET_NAME = "test_vision_dataset";
  private ByteArrayOutputStream bout;
  private PrintStream out;
  private String datasetId;
@@ -54,8 +54,13 @@ public void tearDown() {
 
  @Test
  public void testCreateImportDeleteDataset() {
+ // Create a random dataset name with a length of 32 characters (max allowed by AutoML)
+ // To prevent name collisions when running tests in multiple java versions at once.
+ // AutoML doesn't allow "-", but accepts "_"
+ String datasetName = String.format("test_%s",
+ UUID.randomUUID().toString().replace("-", "_").substring(0, 26));
  // Act
- DatasetApi.createDataset(PROJECT_ID, COMPUTE_REGION, DATASET_NAME, false);
+ DatasetApi.createDataset(PROJECT_ID, COMPUTE_REGION, datasetName, false);
 
  // Assert
  String got = bout.toString();