public void ReadBlackTest1()
{
using var csv = CsvUtility.ToStream(" ");
using var reader = new CsvReader(new StreamReader(csv), hasHeader: false);
Assert.IsNull(reader.Read());
}
public void TryResetTest()
{
using var csv = CsvUtility.ToStream(
"name,age\n" +
"Homer,35\n" +
"Marge,28\n");
using var reader = new CsvReader(new StreamReader(csv));
// Force to consume all the records
foreach (var _ in reader.ReadAll())
{
}
Assert.IsTrue(reader.IsDone);
Assert.IsTrue(reader.TryReset());
Assert.IsFalse(reader.IsDone);
var enumerator = reader.ReadAll().GetEnumerator();
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual("Homer,35", enumerator.Current.ToString());
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual("Marge,28", enumerator.Current.ToString());
Assert.IsFalse(enumerator.MoveNext());
Assert.IsTrue(reader.IsDone);
}
public void ReadBlackTest2()
{
using var csv = CsvUtility.ToStream(" ");
var format = CsvFormat.Default.WithIgnoreWhitespace(false);
using var reader = new CsvReader(new StreamReader(csv), hasHeader: false, format: format);
Assert.AreEqual(" ", reader.Read() !.ToString());
}
public void ReadWithQuoteNeverTest()
{
using var csv = CsvUtility.ToStream(
"Name,Age\n" +
"Frida \"The Painter\", 35\n" +
"Pagannini \"The violinist\",28\n");
var reader = CsvReader.FromStream(csv, CsvFormat.Default.WithStyle(QuoteStyle.Never));
Assert.AreEqual("Frida The Painter,35", reader.Read() !.ToString());
Assert.AreEqual("Pagannini The violinist,28", reader.Read() !.ToString());
}
public void ReadWithQuoteAlwaysTest()
{
using var csv = CsvUtility.ToStream(
"Name,Age\n" +
"Homer,35\n" +
"Marge,28\n");
var reader = CsvReader.FromStream(csv, CsvFormat.Default.WithStyle(QuoteStyle.Always));
Assert.AreEqual("\"Homer\",\"35\"", reader.Read() !.ToString());
Assert.AreEqual("\"Marge\",\"28\"", reader.Read() !.ToString());
}
public void ReadRecordWithWhiteSpaceTest()
{
using var csv = CsvUtility.ToStream(
"Name,Age\n" +
"Homer , 35\n" +
" Marge,28\n");
using var reader = CsvReader.FromStream(csv, CsvFormat.Default.WithIgnoreWhitespace(false));
Assert.AreEqual("Homer , 35", reader.Read() !.ToString());
Assert.AreEqual(" Marge,28", reader.Read() !.ToString());
}
public void FromStreamTest()
{
using var csv = CsvUtility.ToStream(
"name,age\n" +
"Homer,35\n" +
"Marge,28\n");
using var reader = CsvReader.FromStream(csv);
Assert.AreEqual(CsvFormat.Default, reader.Format);
Assert.IsTrue(reader.HasHeader);
Assert.IsFalse(reader.IsDone);
}
public void CsvReaderTest2()
{
using var csv = CsvUtility.ToStream(
"name,age\n" +
"Homer,35\n" +
"Marge,28\n");
using var reader = new CsvReader(new StreamReader(csv), hasHeader: false);
Assert.AreEqual(CsvFormat.Default, reader.Format);
Assert.IsFalse(reader.HasHeader);
Assert.IsFalse(reader.IsDone);
}
public void ReadWithUnclosedQuoteTest()
{
using var csv = CsvUtility.ToStream(
"Name,Age\n" +
"Mario \"The plumber, 20\n" +
"Luigi, 19\n");
using var reader = CsvReader.FromStream(csv);
Assert.Throws <CsvFormatException>(() =>
{
var _ = reader.Read();
});
}
public void CsvReaderTest1()
{
using var csv = CsvUtility.ToStream(
"name,age\n" +
"Homer,35\n" +
"Marge,28\n");
var format = new CsvFormat('\t', '\"');
using var reader = new CsvReader(new StreamReader(csv), format);
Assert.AreEqual(new CsvFormat('\t', '\"'), reader.Format);
Assert.IsTrue(reader.HasHeader);
Assert.IsFalse(reader.IsDone);
}
public void ReasAllAsTest()
{
using var csv = CsvUtility.ToStream(
"Name,Age\n" +
"Homer,35\n" +
"Marge,28\n");
using var reader = CsvReader.FromStream(csv);
var persons = reader.ReadAllAs <Person>().ToList();
Assert.AreEqual("Homer", persons[0].Name);
Assert.AreEqual(35, persons[0].Age);
Assert.AreEqual("Marge", persons[1].Name);
Assert.AreEqual(28, persons[1].Age);
}
public void ReadTest()
{
using var csv = CsvUtility.ToStream(
"name,age\n" +
"Homer,35\n" +
"Marge,28\n");
using var reader = new CsvReader(new StreamReader(csv));
Assert.IsFalse(reader.IsDone);
Assert.AreEqual(0, reader.RecordNumber);
Assert.AreEqual("name,age", reader.Header !.ToString());
Assert.AreEqual("Homer,35", reader.Read() !.ToString());
Assert.AreEqual("Marge,28", reader.Read() !.ToString());
Assert.IsNull(reader.Read());
Assert.IsTrue(reader.IsDone);
Assert.AreEqual(2, reader.RecordNumber);
}
public async Task ReadAllAsyncTest()
{
using var csv = CsvUtility.ToStream(
"name,age\n" +
"Homer,35\n" +
"Marge,28\n");
using var reader = new CsvReader(new StreamReader(csv));
var enumerator = reader.ReadAllAsync().GetAsyncEnumerator();
Assert.IsTrue(await enumerator.MoveNextAsync());
Assert.AreEqual("Homer,35", enumerator.Current !.ToString());
Assert.IsTrue(await enumerator.MoveNextAsync());
Assert.AreEqual("Marge,28", enumerator.Current.ToString());
Assert.IsFalse(await enumerator.MoveNextAsync());
Assert.IsTrue(reader.IsDone);
}
public async Task ReadAsyncTest()
{
using var csv = CsvUtility.ToStream(
"name,age\n" +
"Homer,35\n" +
"Marge,28\n");
using var reader = new CsvReader(new StreamReader(csv));
Assert.IsFalse(reader.IsDone);
Assert.AreEqual("name,age", reader.Header !.ToString());
Assert.AreEqual("Homer,35", (await reader.ReadAsync()) !.ToString());
Assert.AreEqual("Marge,28", (await reader.ReadAsync()) !.ToString());
CsvRecord?record = await reader.ReadAsync();
Assert.IsNull(record);
Assert.IsTrue(reader.IsDone);
}
public void ReasAsTest()
{
using var csv = CsvUtility.ToStream(
"Name,Age\n" +
"Homer,35\n" +
"Marge,28\n");
using var reader = CsvReader.FromStream(csv);
Person p1 = reader.ReadAs <Person>();
Assert.AreEqual("Homer", p1.Name);
Assert.AreEqual(35, p1.Age);
Person p2 = reader.ReadAs <Person>();
Assert.AreEqual("Marge", p2.Name);
Assert.AreEqual(28, p2.Age);
Assert.IsFalse(reader.ReadAs <Person>().HasValue);
}
/// <summary>
/// Creates a <see cref="CsvDocument"/> from the specified string.
/// </summary>
/// <param name="csv">The CSV.</param>
/// <param name="format">The format.</param>
/// <param name="flexible">if set to <c>true</c> will allow records of differents lengths.</param>
/// <returns></returns>
public static CsvDocument FromCsv(string csv, CsvFormat?format = null, bool flexible = false)
{
format ??= CsvFormat.Default;
if (string.IsNullOrWhiteSpace(csv))
{
throw new ArgumentException("CSV is empty");
}
using MemoryStream memory = CsvUtility.ToStream(csv);
using (CsvReader reader = new CsvReader(new StreamReader(memory), format))
{
List <CsvRecord>?records;
if (flexible)
{
records = reader.ReadAll().ToList();
}
else
{
records = new List <CsvRecord>();
int headerLength = reader.Header !.Length;
foreach (CsvRecord r in reader.ReadAll())
{
int recordLength = r.Length;
if (recordLength != headerLength)
{
throw new InvalidOperationException($"Invalid record length for non-flexible csv, " +
$"expected {headerLength} but {recordLength} was get");
}
records.Add(r);
}
}
return(new CsvDocument(records, reader.Header !, format, flexible));
}
}
