|
| 1 | +/* |
| 2 | + * Copyright (2023) The Delta Lake Project Authors. |
| 3 | + * |
| 4 | + * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | + * you may not use this file except in compliance with the License. |
| 6 | + * You may obtain a copy of the License at |
| 7 | + * |
| 8 | + * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | + * |
| 10 | + * Unless required by applicable law or agreed to in writing, software |
| 11 | + * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | + * See the License for the specific language governing permissions and |
| 14 | + * limitations under the License. |
| 15 | + */ |
| 16 | + |
| 17 | +package io.delta.kernel.types |
| 18 | + |
| 19 | +import java.util.ArrayList |
| 20 | + |
| 21 | +import io.delta.kernel.exceptions.KernelException |
| 22 | +import io.delta.kernel.types.StructField.COLLATIONS_METADATA_KEY |
| 23 | + |
| 24 | +import collection.JavaConverters._ |
| 25 | +import org.scalatest.funsuite.AnyFunSuite |
| 26 | + |
| 27 | +/** |
| 28 | + * Test suite for [[StructField]] class. |
| 29 | + */ |
| 30 | +class StructFieldSuite extends AnyFunSuite { |
| 31 | + |
| 32 | + // Test equality and hashcode |
| 33 | + test("equality and hashcode") { |
| 34 | + val field1 = new StructField( |
| 35 | + "field", |
| 36 | + LongType.LONG, |
| 37 | + true, |
| 38 | + FieldMetadata.empty(), |
| 39 | + Seq(new TypeChange(IntegerType.INTEGER, LongType.LONG)).asJava) |
| 40 | + val field2 = new StructField( |
| 41 | + "field", |
| 42 | + LongType.LONG, |
| 43 | + true, |
| 44 | + FieldMetadata.empty(), |
| 45 | + Seq(new TypeChange(IntegerType.INTEGER, LongType.LONG)).asJava) |
| 46 | + val field3 = new StructField("differentField", IntegerType.INTEGER, true) |
| 47 | + val field4 = new StructField("field", StringType.STRING, true) |
| 48 | + val field5 = new StructField("field", IntegerType.INTEGER, false) |
| 49 | + val field6 = new StructField( |
| 50 | + "field", |
| 51 | + IntegerType.INTEGER, |
| 52 | + true, |
| 53 | + FieldMetadata.builder().putBoolean("a", true).build(), |
| 54 | + Seq(new TypeChange(IntegerType.INTEGER, LongType.LONG)).asJava) |
| 55 | + val field7 = new StructField( |
| 56 | + "field", |
| 57 | + LongType.LONG, |
| 58 | + true, |
| 59 | + FieldMetadata.empty(), |
| 60 | + Seq(new TypeChange(IntegerType.INTEGER, StringType.STRING)).asJava) |
| 61 | + |
| 62 | + assert(field1 == field2) |
| 63 | + assert(field1.hashCode() == field2.hashCode()) |
| 64 | + |
| 65 | + assert(field1 != field3) |
| 66 | + assert(field1 != field4) |
| 67 | + assert(field1 != field5) |
| 68 | + assert(field1 != field6) |
| 69 | + assert(field1 != field7) |
| 70 | + } |
| 71 | + |
| 72 | + Seq( |
| 73 | + new StructType(), |
| 74 | + new ArrayType(LongType.LONG, false), |
| 75 | + new MapType(LongType.LONG, LongType.LONG, false)).foreach { dataType => |
| 76 | + test(s"withType should throw exception with change types for nested types $dataType") { |
| 77 | + val field = new StructField( |
| 78 | + "field", |
| 79 | + dataType, |
| 80 | + true) |
| 81 | + assertThrows[KernelException] { |
| 82 | + field.withTypeChanges(Seq(new TypeChange(IntegerType.INTEGER, LongType.LONG)).asJava) |
| 83 | + } |
| 84 | + } |
| 85 | + |
| 86 | + test(s"Constructor should throw exception with change types for nested types $dataType") { |
| 87 | + |
| 88 | + assertThrows[KernelException] { |
| 89 | + new StructField( |
| 90 | + "field", |
| 91 | + dataType, |
| 92 | + true, |
| 93 | + FieldMetadata.empty(), |
| 94 | + Seq(new TypeChange(IntegerType.INTEGER, LongType.LONG)).asJava) |
| 95 | + } |
| 96 | + } |
| 97 | + } |
| 98 | + |
| 99 | + // Test metadata column detection |
| 100 | + test("metadata column detection") { |
| 101 | + val regularField = new StructField("regularField", IntegerType.INTEGER, true) |
| 102 | + assert(!regularField.isMetadataColumn) |
| 103 | + assert(regularField.isDataColumn) |
| 104 | + |
| 105 | + // Create a metadata field |
| 106 | + val metadataFieldName = "_metadata.custom" |
| 107 | + val metadataBuilder = FieldMetadata.builder() |
| 108 | + metadataBuilder.putBoolean("isMetadataColumn", true) |
| 109 | + val metadataField = |
| 110 | + new StructField(metadataFieldName, LongType.LONG, false, metadataBuilder.build()) |
| 111 | + |
| 112 | + assert(metadataField.isMetadataColumn) |
| 113 | + assert(!metadataField.isDataColumn) |
| 114 | + } |
| 115 | + |
| 116 | + // Test withNewMetadata method |
| 117 | + test("withNewMetadata") { |
| 118 | + val originalField = new StructField("field", IntegerType.INTEGER, true) |
| 119 | + assert(originalField.getMetadata() == FieldMetadata.empty()) |
| 120 | + |
| 121 | + val newMetadataBuilder = FieldMetadata.builder() |
| 122 | + newMetadataBuilder.putString("key", "value") |
| 123 | + val newMetadata = newMetadataBuilder.build() |
| 124 | + |
| 125 | + val updatedField = originalField.withNewMetadata(newMetadata) |
| 126 | + |
| 127 | + assert(updatedField.getName == originalField.getName) |
| 128 | + assert(updatedField.getDataType == originalField.getDataType) |
| 129 | + assert(updatedField.isNullable == originalField.isNullable) |
| 130 | + assert(updatedField.getMetadata == newMetadata) |
| 131 | + assert(updatedField.getMetadata.getString("key") == "value") |
| 132 | + } |
| 133 | + |
| 134 | + // Test type changes |
| 135 | + test("type changes") { |
| 136 | + val originalField = new StructField( |
| 137 | + "field", |
| 138 | + IntegerType.INTEGER, |
| 139 | + true, |
| 140 | + FieldMetadata.builder().putString("a", "b").build()) |
| 141 | + assert(originalField.getTypeChanges.isEmpty) |
| 142 | + |
| 143 | + val typeChanges = new ArrayList[TypeChange]() |
| 144 | + typeChanges.add(new TypeChange(IntegerType.INTEGER, LongType.LONG)) |
| 145 | + |
| 146 | + val updatedField = originalField.withTypeChanges(typeChanges) |
| 147 | + |
| 148 | + assert(updatedField.getName == originalField.getName) |
| 149 | + assert(updatedField.getDataType == originalField.getDataType) |
| 150 | + assert(updatedField.isNullable == originalField.isNullable) |
| 151 | + assert(updatedField.getMetadata == originalField.getMetadata) |
| 152 | + assert(updatedField.getTypeChanges.size() == 1) |
| 153 | + |
| 154 | + val typeChange = updatedField.getTypeChanges.get(0) |
| 155 | + assert(typeChange.getFrom == IntegerType.INTEGER) |
| 156 | + assert(typeChange.getTo == LongType.LONG) |
| 157 | + } |
| 158 | + |
| 159 | + // Test TypeChange class |
| 160 | + test("TypeChange class") { |
| 161 | + val from = IntegerType.INTEGER |
| 162 | + val to = LongType.LONG |
| 163 | + val typeChange = new TypeChange(from, to) |
| 164 | + |
| 165 | + assert(typeChange.getFrom == from) |
| 166 | + assert(typeChange.getTo == to) |
| 167 | + |
| 168 | + // Test equals and hashCode |
| 169 | + val sameTypeChange = new TypeChange(IntegerType.INTEGER, LongType.LONG) |
| 170 | + val differentTypeChange = new TypeChange(IntegerType.INTEGER, StringType.STRING) |
| 171 | + |
| 172 | + assert(typeChange == sameTypeChange) |
| 173 | + assert(typeChange.hashCode() == sameTypeChange.hashCode()) |
| 174 | + assert(typeChange != differentTypeChange) |
| 175 | + } |
| 176 | +} |
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