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+// 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.
+
+using System;
+using System.Collections.Generic;
+using Apache.Arrow.Types;
+using Xunit;
+
+namespace Apache.Arrow.Tests
+{
+ public class TableTests
+ {
+ public static Table MakeTableWithOneColumnOfTwoIntArrays(int lengthOfEachArray)
+ {
+ Array intArray = ColumnTests.MakeIntArray(lengthOfEachArray);
+ Array intArrayCopy = ColumnTests.MakeIntArray(lengthOfEachArray);
+
+ Field field = new Field.Builder().Name("f0").DataType(Int32Type.Default).Build();
+ Schema s0 = new Schema.Builder().Field(field).Build();
+
+ Column column = new Column(field, new List<Array> { intArray, intArrayCopy });
+ Table table = new Table(s0, new List<Column> { column });
+ return table;
+ }
+
+ [Fact]
+ public void TestEmptyTable()
+ {
+ Table table = new Table();
+ Assert.Equal(0, table.ColumnCount);
+ Assert.Equal(0, table.RowCount);
+ }
+
+ [Fact]
+ public void TestTableBasics()
+ {
+ Table table = MakeTableWithOneColumnOfTwoIntArrays(10);
+ Assert.Equal(20, table.RowCount);
+ Assert.Equal(1, table.ColumnCount);
+ }
+
+ [Fact]
+ public void TestTableAddRemoveAndSetColumn()
+ {
+ Table table = MakeTableWithOneColumnOfTwoIntArrays(10);
+
+ Array nonEqualLengthIntArray = ColumnTests.MakeIntArray(10);
+ Field field1 = new Field.Builder().Name("f1").DataType(Int32Type.Default).Build();
+ Column nonEqualLengthColumn = new Column(field1, new[] { nonEqualLengthIntArray});
+ Assert.Throws<ArgumentException>(() => table.InsertColumn(-1, nonEqualLengthColumn));
+ Assert.Throws<ArgumentException>(() => table.InsertColumn(1, nonEqualLengthColumn));
+
+ Array equalLengthIntArray = ColumnTests.MakeIntArray(20);
+ Field field2 = new Field.Builder().Name("f2").DataType(Int32Type.Default).Build();
+ Column equalLengthColumn = new Column(field2, new[] { equalLengthIntArray});
+ Column existingColumn = table.Column(0);
+
+ Table newTable = table.InsertColumn(0, equalLengthColumn);
+ Assert.Equal(2, newTable.ColumnCount);
+ Assert.True(newTable.Column(0) == equalLengthColumn);
+ Assert.True(newTable.Column(1) == existingColumn);
+
+ newTable = newTable.RemoveColumn(1);
+ Assert.Equal(1, newTable.ColumnCount);
+ Assert.True(newTable.Column(0) == equalLengthColumn);
+
+ newTable = table.SetColumn(0, existingColumn);
+ Assert.True(newTable.Column(0) == existingColumn);
+ }
+ }
+}