rahil-c commented on code in PR #11369: URL: https://github.com/apache/iceberg/pull/11369#discussion_r1861314221
########## core/src/test/java/org/apache/iceberg/rest/responses/TestFetchScanTasksResponseParser.java: ########## @@ -0,0 +1,180 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.iceberg.rest.responses; + +import static org.apache.iceberg.TestBase.FILE_A; +import static org.apache.iceberg.TestBase.FILE_A_DELETES; +import static org.apache.iceberg.TestBase.PARTITION_SPECS_BY_ID; +import static org.apache.iceberg.TestBase.SCHEMA; +import static org.apache.iceberg.TestBase.SPEC; +import static org.assertj.core.api.Assertions.assertThat; +import static org.assertj.core.api.Assertions.assertThatThrownBy; + +import com.fasterxml.jackson.databind.JsonNode; +import java.util.List; +import org.apache.iceberg.BaseFileScanTask; +import org.apache.iceberg.DeleteFile; +import org.apache.iceberg.FileScanTask; +import org.apache.iceberg.PartitionSpecParser; +import org.apache.iceberg.SchemaParser; +import org.apache.iceberg.expressions.Expressions; +import org.apache.iceberg.expressions.ResidualEvaluator; +import org.junit.jupiter.api.Test; + +public class TestFetchScanTasksResponseParser { + + @Test + public void nullAndEmptyCheck() { + assertThatThrownBy(() -> FetchScanTasksResponseParser.toJson(null)) + .isInstanceOf(IllegalArgumentException.class) + .hasMessage("Invalid fetch scan tasks response: null"); + + assertThatThrownBy(() -> FetchScanTasksResponseParser.fromJson((JsonNode) null)) + .isInstanceOf(IllegalArgumentException.class) + .hasMessage("Invalid fetch scan tasks response: null or empty"); + } + + @Test + public void roundTripSerdeWithEmptyObject() { + assertThatThrownBy( + () -> FetchScanTasksResponseParser.toJson(FetchScanTasksResponse.builder().build())) + .isInstanceOf(IllegalArgumentException.class) + .hasMessage("Invalid response: planTasks and fileScanTask cannot both be null"); + + String emptyJson = "{ }"; + assertThatThrownBy(() -> FetchScanTasksResponseParser.fromJson(emptyJson)) + .isInstanceOf(IllegalArgumentException.class) + .hasMessage("Invalid fetch scan tasks response: null or empty"); + } + + @Test + public void missingRequiredField() { + String missingRequiredFieldJson = "{\"x\": \"val\"}"; + assertThatThrownBy(() -> FetchScanTasksResponseParser.fromJson(missingRequiredFieldJson)) + .isInstanceOf(IllegalArgumentException.class) + .hasMessage("Invalid response: planTasks and fileScanTask cannot both be null"); + } + + @Test + public void roundTripSerdeWithPlanTasks() { + String expectedJson = "{\"plan-tasks\":[\"task1\",\"task2\"]}"; + String json = + FetchScanTasksResponseParser.toJson( + FetchScanTasksResponse.builder().withPlanTasks(List.of("task1", "task2")).build()); + assertThat(json).isEqualTo(expectedJson); + + FetchScanTasksResponse fromResponse = FetchScanTasksResponseParser.fromJson(json); + + // can't do an equality comparison on PlanTableScanRequest because we don't implement + // equals/hashcode + assertThat(FetchScanTasksResponseParser.toJson(fromResponse, false)).isEqualTo(expectedJson); + } + + @Test + public void roundTripSerdeWithDeleteFilesNoFileScanTasksPresent() { + assertThatThrownBy( + () -> + FetchScanTasksResponse.builder() + .withPlanTasks(List.of("task1", "task2")) + .withDeleteFiles(List.of(FILE_A_DELETES)) + .build()) + .isInstanceOf(IllegalArgumentException.class) + .hasMessage( + "Invalid response: deleteFiles should only be returned with fileScanTasks that reference them"); + + String invalidJson = + "{\"plan-tasks\":[\"task1\",\"task2\"]," + + "\"delete-files\":[{\"spec-id\":0,\"content\":\"POSITION_DELETES\"," + + "\"file-path\":\"/path/to/data-a-deletes.parquet\",\"file-format\":\"PARQUET\"," + + "\"partition\":{\"1000\":0},\"file-size-in-bytes\":10,\"record-count\":1}]" + + "}"; + + assertThatThrownBy(() -> FetchScanTasksResponseParser.fromJson(invalidJson)) + .isInstanceOf(IllegalArgumentException.class) + .hasMessage( + "Invalid response: deleteFiles should only be returned with fileScanTasks that reference them"); + } + + @Test + public void roundTripSerdeWithFileScanTasks() { + ResidualEvaluator residualEvaluator = + ResidualEvaluator.of(SPEC, Expressions.equal("id", 1), true); + FileScanTask fileScanTask = + new BaseFileScanTask( + FILE_A, + new DeleteFile[] {FILE_A_DELETES}, + SchemaParser.toJson(SCHEMA), + PartitionSpecParser.toJson(SPEC), + residualEvaluator); + + FetchScanTasksResponse response = + FetchScanTasksResponse.builder() + .withFileScanTasks(List.of(fileScanTask)) + .withDeleteFiles(List.of(FILE_A_DELETES)) + // assume you have set this already Review Comment: will remove -- This is an automated message from the Apache Git Service. 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