Add equals and hashCode to exceptions. Add exceptions to serializatio…

…n tests

gcloud-java-bigquery/src/main/java/com/google/gcloud/bigquery/BigQueryException.java

@@ -22,6 +22,7 @@
 import com.google.gcloud.RetryHelper.RetryInterruptedException;
 
 import java.io.IOException;
+import java.util.Objects;
 import java.util.Set;
 
 /**
@@ -73,6 +74,23 @@ protected Set<Error> retryableErrors() {
     return RETRYABLE_ERRORS;
   }
 
+  @Override
+  public boolean equals(Object obj) {
+    if (obj == this) {
+      return true;
+    }
+    if (!(obj instanceof BigQueryException)) {
+      return false;
+    }
+    BigQueryException other = (BigQueryException) obj;
+    return super.equals(other) && Objects.equals(error, other.error);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(super.hashCode(), error);
+  }
+
   /**
    * Translate RetryHelperException to the BigQueryException that caused the error. This method will
    * always throw an exception.

gcloud-java-bigquery/src/test/java/com/google/gcloud/bigquery/SerializationTest.java

@@ -219,6 +219,8 @@ public class SerializationTest extends BaseSerializationTest {
       new Dataset(BIGQUERY, new DatasetInfo.BuilderImpl(DATASET_INFO));
   private static final Table TABLE = new Table(BIGQUERY, new TableInfo.BuilderImpl(TABLE_INFO));
   private static final Job JOB = new Job(BIGQUERY, new JobInfo.BuilderImpl(JOB_INFO));
+  private static final BigQueryException BIG_QUERY_EXCEPTION =
+      new BigQueryException(42, "message", BIGQUERY_ERROR);
 
   @Override
   protected Serializable[] serializableObjects() {
@@ -237,7 +239,7 @@ protected Serializable[] serializableObjects() {
         LOAD_STATISTICS, QUERY_STATISTICS, BIGQUERY_ERROR, JOB_STATUS, JOB_ID,
         COPY_JOB_CONFIGURATION, EXTRACT_JOB_CONFIGURATION, LOAD_CONFIGURATION,
         LOAD_JOB_CONFIGURATION, QUERY_JOB_CONFIGURATION, JOB_INFO, INSERT_ALL_REQUEST,
-        INSERT_ALL_RESPONSE, FIELD_VALUE, QUERY_REQUEST, QUERY_RESPONSE,
+        INSERT_ALL_RESPONSE, FIELD_VALUE, QUERY_REQUEST, QUERY_RESPONSE, BIG_QUERY_EXCEPTION,
         BigQuery.DatasetOption.fields(), BigQuery.DatasetDeleteOption.deleteContents(),
         BigQuery.DatasetListOption.all(), BigQuery.TableOption.fields(),
         BigQuery.TableListOption.pageSize(42L), BigQuery.JobOption.fields(),

gcloud-java-core/src/main/java/com/google/gcloud/BaseServiceException.java

@@ -32,6 +32,16 @@
  */
 public class BaseServiceException extends RuntimeException {
 
+  private static final long serialVersionUID = 759921776378760835L;
+  public static final int UNKNOWN_CODE = 0;
+
+  private final int code;
+  private final boolean retryable;
+  private final String reason;
+  private final boolean idempotent;
+  private final String location;
+  private final String debugInfo;
+
   protected static final class Error implements Serializable {
 
     private static final long serialVersionUID = -4019600198652965721L;
@@ -79,16 +89,6 @@ public int hashCode() {
     }
   }
 
-  private static final long serialVersionUID = 759921776378760835L;
-  public static final int UNKNOWN_CODE = 0;
-
-  private final int code;
-  private final boolean retryable;
-  private final String reason;
-  private final boolean idempotent;
-  private final String location;
-  private final String debugInfo;
-
   public BaseServiceException(IOException exception, boolean idempotent) {
     super(message(exception), exception);
     int code = UNKNOWN_CODE;
@@ -198,6 +198,31 @@ protected String debugInfo() {
     return debugInfo;
   }
 
+  @Override
+  public boolean equals(Object obj) {
+    if (obj == this) {
+      return true;
+    }
+    if (!(obj instanceof BaseServiceException)) {
+      return false;
+    }
+    BaseServiceException other = (BaseServiceException) obj;
+    return Objects.equals(getCause(), other.getCause())
+        && Objects.equals(getMessage(), other.getMessage())
+        && code == other.code
+        && retryable == other.retryable
+        && Objects.equals(reason, other.reason)
+        && idempotent == other.idempotent
+        && Objects.equals(location, other.location)
+        && Objects.equals(debugInfo, other.debugInfo);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(getCause(), getMessage(), code, retryable, reason, idempotent, location,
+        debugInfo);
+  }
+
   protected static String reason(GoogleJsonError error) {
     if (error.getErrors() != null  && !error.getErrors().isEmpty()) {
       return error.getErrors().get(0).getReason();

gcloud-java-core/src/test/java/com/google/gcloud/SerializationTest.java

@@ -46,6 +46,8 @@ public Builder toBuilder() {
     }
   }
 
+  private static final BaseServiceException BASE_SERVICE_EXCEPTION =
+      new BaseServiceException(42, "message", "reason", true);
   private static final ExceptionHandler EXCEPTION_HANDLER = ExceptionHandler.defaultInstance();
   private static final Identity IDENTITY = Identity.allAuthenticatedUsers();
   private static final PageImpl<String> PAGE =
@@ -81,7 +83,8 @@ public Builder toBuilder() {
 
   @Override
   protected Serializable[] serializableObjects() {
-    return new Serializable[]{EXCEPTION_HANDLER, IDENTITY, PAGE, RETRY_PARAMS, SOME_IAM_POLICY};
+    return new Serializable[]{BASE_SERVICE_EXCEPTION, EXCEPTION_HANDLER, IDENTITY, PAGE,
+        RETRY_PARAMS, SOME_IAM_POLICY};
   }
 
   @Override

gcloud-java-datastore/src/test/java/com/google/gcloud/datastore/SerializationTest.java

@@ -102,6 +102,8 @@ public class SerializationTest extends BaseSerializationTest {
       .addValue(new NullValue())
       .build();
   private static final ProjectionEntity PROJECTION_ENTITY = ProjectionEntity.fromPb(ENTITY1.toPb());
+  private static final DatastoreException DATASTORE_EXCEPTION =
+      new DatastoreException(42, "message", "reason");
 
   @Override
   protected java.io.Serializable[] serializableObjects() {
@@ -119,7 +121,8 @@ protected java.io.Serializable[] serializableObjects() {
         ENTITY2, ENTITY3, EMBEDDED_ENTITY, PROJECTION_ENTITY, DATE_TIME1, BLOB1, CURSOR1, GQL1,
         GQL2, QUERY1, QUERY2, QUERY3, NULL_VALUE, KEY_VALUE, STRING_VALUE, EMBEDDED_ENTITY_VALUE1,
         EMBEDDED_ENTITY_VALUE2, EMBEDDED_ENTITY_VALUE3, LIST_VALUE, LONG_VALUE, DOUBLE_VALUE,
-        BOOLEAN_VALUE, DATE_AND_TIME_VALUE, BLOB_VALUE, RAW_VALUE, options, otherOptions};
+        BOOLEAN_VALUE, DATE_AND_TIME_VALUE, BLOB_VALUE, RAW_VALUE, DATASTORE_EXCEPTION, options,
+        otherOptions};
   }
 
   @Override

gcloud-java-resourcemanager/src/test/java/com/google/gcloud/resourcemanager/SerializationTest.java

@@ -49,6 +49,8 @@ public class SerializationTest extends BaseSerializationTest {
   private static final Policy POLICY = Policy.builder()
       .addBinding(Policy.Role.viewer(), ImmutableSet.of(Identity.user("abc@gmail.com")))
       .build();
+  private static final ResourceManagerException RESOURCE_MANAGER_EXCEPTION =
+      new ResourceManagerException(42, "message");
 
   @Override
   protected Serializable[] serializableObjects() {
@@ -57,7 +59,8 @@ protected Serializable[] serializableObjects() {
         .projectId("some-unnecessary-project-ID")
         .build();
     return new Serializable[]{PARTIAL_PROJECT_INFO, FULL_PROJECT_INFO, PROJECT, PAGE_RESULT,
-        PROJECT_GET_OPTION, PROJECT_LIST_OPTION, POLICY, options, otherOptions};
+        PROJECT_GET_OPTION, PROJECT_LIST_OPTION, POLICY, RESOURCE_MANAGER_EXCEPTION, options,
+        otherOptions};
   }
 
   @Override

gcloud-java-storage/src/test/java/com/google/gcloud/storage/SerializationTest.java

@@ -52,6 +52,7 @@ public class SerializationTest extends BaseSerializationTest {
       Collections.<BatchResponse.Result<Blob>>emptyList());
   private static final PageImpl<Blob> PAGE_RESULT =
       new PageImpl<>(null, "c", Collections.singletonList(BLOB));
+  private static final StorageException STORAGE_EXCEPTION = new StorageException(42, "message");
   private static final Storage.BlobListOption BLOB_LIST_OPTIONS =
       Storage.BlobListOption.pageSize(100);
   private static final Storage.BlobSourceOption BLOB_SOURCE_OPTIONS =
@@ -79,7 +80,8 @@ protected Serializable[] serializableObjects() {
     return new Serializable[]{ACL_DOMAIN, ACL_GROUP, ACL_PROJECT_, ACL_USER, ACL_RAW, ACL,
         BLOB_INFO, BLOB, BUCKET_INFO, BUCKET, ORIGIN, CORS, BATCH_REQUEST, BATCH_RESPONSE,
         PAGE_RESULT, BLOB_LIST_OPTIONS, BLOB_SOURCE_OPTIONS, BLOB_TARGET_OPTIONS,
-        BUCKET_LIST_OPTIONS, BUCKET_SOURCE_OPTIONS, BUCKET_TARGET_OPTIONS, options, otherOptions};
+        BUCKET_LIST_OPTIONS, BUCKET_SOURCE_OPTIONS, BUCKET_TARGET_OPTIONS, STORAGE_EXCEPTION,
+        options, otherOptions};
   }
 
   @Override