kbendick commented on code in PR #5377: URL: https://github.com/apache/iceberg/pull/5377#discussion_r934046493
########## spark/v3.3/spark/src/test/java/org/apache/iceberg/spark/TestFunctionCatalog.java: ########## @@ -0,0 +1,146 @@ +/* + * 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.spark; + +import org.apache.iceberg.AssertHelpers; +import org.apache.iceberg.IcebergBuild; +import org.apache.iceberg.relocated.com.google.common.collect.ImmutableList; +import org.apache.iceberg.spark.functions.IcebergVersionFunction; +import org.apache.spark.sql.AnalysisException; +import org.apache.spark.sql.catalyst.analysis.NoSuchFunctionException; +import org.apache.spark.sql.catalyst.analysis.NoSuchNamespaceException; +import org.apache.spark.sql.connector.catalog.FunctionCatalog; +import org.apache.spark.sql.connector.catalog.Identifier; +import org.apache.spark.sql.connector.catalog.functions.UnboundFunction; +import org.assertj.core.api.Assertions; +import org.junit.After; +import org.junit.Assert; +import org.junit.Before; +import org.junit.Test; + +public class TestFunctionCatalog extends SparkTestBaseWithCatalog { + private static final String[] EMPTY_NAMESPACE = new String[] {}; + private static final String[] SYSTEM_NAMESPACE = new String[] {"system"}; + private static final String[] DEFAULT_NAMESPACE = new String[] {"default"}; + private static final String[] DB_NAMESPACE = new String[] {"db"}; + private final FunctionCatalog asFunctionCatalog; + + public TestFunctionCatalog() { + this.asFunctionCatalog = castToFunctionCatalog(catalogName); + } + + @Before + public void createDefaultNamespace() { + sql("CREATE NAMESPACE IF NOT EXISTS %s", catalogName + ".default"); + } + + @After + public void dropDefaultNamespace() { + sql("DROP NAMESPACE IF EXISTS %s", catalogName + ".default"); + } + + @Test + public void testListFunctionsViaCatalog() throws NoSuchNamespaceException { + Assertions.assertThat(asFunctionCatalog.listFunctions(EMPTY_NAMESPACE)) + .anyMatch(func -> "iceberg_version".equalsIgnoreCase(func.name())); + + Assertions.assertThat(asFunctionCatalog.listFunctions(SYSTEM_NAMESPACE)) + .anyMatch(func -> "iceberg_version".equalsIgnoreCase(func.name())); + + Assert.assertArrayEquals( + "Listing functions in an existing namespace that's not system should not throw", + new Identifier[0], + asFunctionCatalog.listFunctions(DEFAULT_NAMESPACE)); + + AssertHelpers.assertThrows( + "Listing functions in a namespace that does not exist should throw", + NoSuchNamespaceException.class, + "Namespace 'db' not found", + () -> asFunctionCatalog.listFunctions(DB_NAMESPACE)); + } + + @Test + public void testLoadFunctions() throws NoSuchFunctionException { + for (String[] namespace : ImmutableList.of(EMPTY_NAMESPACE, SYSTEM_NAMESPACE)) { + Identifier identifier = Identifier.of(namespace, "iceberg_version"); + UnboundFunction func = asFunctionCatalog.loadFunction(identifier); + + Assertions.assertThat(func) + .isNotNull() + .isInstanceOf(UnboundFunction.class) + .isExactlyInstanceOf(IcebergVersionFunction.class); + } + + AssertHelpers.assertThrows( + "Cannot load a function if it's not used with the system namespace or the empty namespace", + NoSuchFunctionException.class, + "Undefined function: default.iceberg_version", + () -> asFunctionCatalog.loadFunction(Identifier.of(DEFAULT_NAMESPACE, "iceberg_version"))); + + AssertHelpers.assertThrows( + "Cannot load a function that does not exist", + NoSuchFunctionException.class, + "Undefined function: system.undefined_function", + () -> + asFunctionCatalog.loadFunction(Identifier.of(SYSTEM_NAMESPACE, "undefined_function"))); + + AssertHelpers.assertThrows( + "Using an undefined function from SQL should fail analysis", + AnalysisException.class, + "Undefined function", + () -> sql("SELECT undefined_function(1, 2)")); + } + + @Test + public void testIcebergVersionFunctionReturnsCorrectResult() { + String buildVersion = IcebergBuild.version(); + + // Check that value correctly loads from file, even in codegen etc + Assert.assertNotEquals( + "iceberg_version should not return undefined", + "undefined", + scalarSql("SELECT %s.system.iceberg_version()", catalogName)); Review Comment: Removed! -- This is an automated message from the Apache Git Service. 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