1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
// Copyright 2009-2022 Josh Close
// This file is a part of CsvHelper and is dual licensed under MS-PL and Apache 2.0.
// See LICENSE.txt for details or visit http://www.opensource.org/licenses/ms-pl.html for MS-PL and http://opensource.org/licenses/Apache-2.0 for Apache 2.0.
// https://github.com/JoshClose/CsvHelper
using Xunit;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace CsvHelper.Tests.Async
{
public class WritingTests
{
[Fact]
public async Task WritingTest()
{
using (var stream = new MemoryStream())
using (var reader = new StreamReader(stream))
using (var writer = new StreamWriter(stream))
using (var csv = new CsvWriter(writer, CultureInfo.InvariantCulture))
{
var records = new List<Simple>
{
new Simple { Id = 1, Name = "one" },
new Simple { Id = 2, Name = "two" },
};
csv.WriteHeader<Simple>();
await csv.NextRecordAsync();
foreach (var record in records)
{
csv.WriteRecord(record);
await csv.NextRecordAsync();
}
writer.Flush();
stream.Position = 0;
var expected = new TestStringBuilder(csv.Configuration.NewLine);
expected.AppendLine("Id,Name");
expected.AppendLine("1,one");
expected.AppendLine("2,two");
Assert.Equal(expected.ToString(), reader.ReadToEnd());
}
}
[Fact]
public async Task WriteRecordsTest()
{
using (var stream = new MemoryStream())
using (var reader = new StreamReader(stream))
using (var writer = new StreamWriter(stream))
using (var csv = new CsvWriter(writer, CultureInfo.InvariantCulture))
{
var records = new List<Simple>
{
new Simple { Id = 1, Name = "one" },
new Simple { Id = 2, Name = "two" },
};
await csv.WriteRecordsAsync(records);
writer.Flush();
stream.Position = 0;
var expected = new TestStringBuilder(csv.Configuration.NewLine);
expected.AppendLine("Id,Name");
expected.AppendLine("1,one");
expected.AppendLine("2,two");
Assert.Equal(expected.ToString(), reader.ReadToEnd());
}
}
[Fact]
public async Task WriteRecordsTestCanceled()
{
using (var source = new CancellationTokenSource())
using (var stream = new MemoryStream())
using (var reader = new StreamReader(stream))
using (var writer = new StreamWriter(stream))
using (var csv = new CsvWriter(writer, CultureInfo.InvariantCulture))
{
var records = new List<Simple>
{
new Simple { Id = 1, Name = "one" },
new Simple { Id = 2, Name = "two" },
new Simple { Id = 3, Name = "three" },
};
source.Cancel();
try
{
await csv.WriteRecordsAsync(records, source.Token);
}
catch (WriterException ex)
{
if (ex.InnerException is OperationCanceledException || ex.InnerException is TaskCanceledException)
{
return;
}
}
throw new XUnitException("Did not throw exception");
}
}
private class Simple
{
public int Id { get; set; }
public string Name { get; set; }
}
}
}
|
