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1 | // Licensed to the Apache Software Foundation (ASF) under one or more |
2 | // contributor license agreements. See the NOTICE file distributed with | |
3 | // this work for additional information regarding copyright ownership. | |
4 | // The ASF licenses this file to You under the Apache License, Version 2.0 | |
5 | // (the "License"); you may not use this file except in compliance with | |
6 | // the License. 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 | using System; | |
17 | using System.Collections.Generic; | |
18 | using Apache.Arrow.Types; | |
19 | using Xunit; | |
20 | ||
21 | namespace Apache.Arrow.Tests | |
22 | { | |
23 | public class TableTests | |
24 | { | |
25 | public static Table MakeTableWithOneColumnOfTwoIntArrays(int lengthOfEachArray) | |
26 | { | |
27 | Array intArray = ColumnTests.MakeIntArray(lengthOfEachArray); | |
28 | Array intArrayCopy = ColumnTests.MakeIntArray(lengthOfEachArray); | |
29 | ||
30 | Field field = new Field.Builder().Name("f0").DataType(Int32Type.Default).Build(); | |
31 | Schema s0 = new Schema.Builder().Field(field).Build(); | |
32 | ||
33 | Column column = new Column(field, new List<Array> { intArray, intArrayCopy }); | |
34 | Table table = new Table(s0, new List<Column> { column }); | |
35 | return table; | |
36 | } | |
37 | ||
38 | [Fact] | |
39 | public void TestEmptyTable() | |
40 | { | |
41 | Table table = new Table(); | |
42 | Assert.Equal(0, table.ColumnCount); | |
43 | Assert.Equal(0, table.RowCount); | |
44 | } | |
45 | ||
46 | [Fact] | |
47 | public void TestTableBasics() | |
48 | { | |
49 | Table table = MakeTableWithOneColumnOfTwoIntArrays(10); | |
50 | Assert.Equal(20, table.RowCount); | |
51 | Assert.Equal(1, table.ColumnCount); | |
52 | } | |
53 | ||
54 | [Fact] | |
55 | public void TestTableAddRemoveAndSetColumn() | |
56 | { | |
57 | Table table = MakeTableWithOneColumnOfTwoIntArrays(10); | |
58 | ||
59 | Array nonEqualLengthIntArray = ColumnTests.MakeIntArray(10); | |
60 | Field field1 = new Field.Builder().Name("f1").DataType(Int32Type.Default).Build(); | |
61 | Column nonEqualLengthColumn = new Column(field1, new[] { nonEqualLengthIntArray}); | |
62 | Assert.Throws<ArgumentException>(() => table.InsertColumn(-1, nonEqualLengthColumn)); | |
63 | Assert.Throws<ArgumentException>(() => table.InsertColumn(1, nonEqualLengthColumn)); | |
64 | ||
65 | Array equalLengthIntArray = ColumnTests.MakeIntArray(20); | |
66 | Field field2 = new Field.Builder().Name("f2").DataType(Int32Type.Default).Build(); | |
67 | Column equalLengthColumn = new Column(field2, new[] { equalLengthIntArray}); | |
68 | Column existingColumn = table.Column(0); | |
69 | ||
70 | Table newTable = table.InsertColumn(0, equalLengthColumn); | |
71 | Assert.Equal(2, newTable.ColumnCount); | |
72 | Assert.True(newTable.Column(0) == equalLengthColumn); | |
73 | Assert.True(newTable.Column(1) == existingColumn); | |
74 | ||
75 | newTable = newTable.RemoveColumn(1); | |
76 | Assert.Equal(1, newTable.ColumnCount); | |
77 | Assert.True(newTable.Column(0) == equalLengthColumn); | |
78 | ||
79 | newTable = table.SetColumn(0, existingColumn); | |
80 | Assert.True(newTable.Column(0) == existingColumn); | |
81 | } | |
82 | } | |
83 | } |