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#region License
// The PostgreSQL License
//
// Copyright (C) 2017 The Npgsql Development Team
//
// Permission to use, copy, modify, and distribute this software and its
// documentation for any purpose, without fee, and without a written
// agreement is hereby granted, provided that the above copyright notice
// and this paragraph and the following two paragraphs appear in all copies.
//
// IN NO EVENT SHALL THE NPGSQL DEVELOPMENT TEAM BE LIABLE TO ANY PARTY
// FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
// INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS
// DOCUMENTATION, EVEN IF THE NPGSQL DEVELOPMENT TEAM HAS BEEN ADVISED OF
// THE POSSIBILITY OF SUCH DAMAGE.
//
// THE NPGSQL DEVELOPMENT TEAM SPECIFICALLY DISCLAIMS ANY WARRANTIES,
// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
// ON AN "AS IS" BASIS, AND THE NPGSQL DEVELOPMENT TEAM HAS NO OBLIGATIONS
// TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
#endregion
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Text;
using System.Threading;
using NpgsqlTypes;
using NUnit.Framework;
namespace Npgsql.Tests
{
public class CopyTests : TestBase
{
#region Raw
[Test, Description("Exports data in binary format (raw mode) and then loads it back in")]
public void RawBinaryRoundtrip()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (field_text TEXT, field_int2 SMALLINT, field_int4 INTEGER)");
//var iterations = Conn.BufferSize / 10 + 100;
//var iterations = Conn.BufferSize / 10 - 100;
var iterations = 500;
// Preload some data into the table
using (var cmd = new NpgsqlCommand("INSERT INTO data (field_text, field_int4) VALUES (@p1, @p2)", conn))
{
cmd.Parameters.AddWithValue("p1", NpgsqlDbType.Text, "HELLO");
cmd.Parameters.AddWithValue("p2", NpgsqlDbType.Integer, 8);
cmd.Prepare();
for (var i = 0; i < iterations; i++)
{
cmd.ExecuteNonQuery();
}
}
var data = new byte[10000];
var len = 0;
using (var outStream = conn.BeginRawBinaryCopy("COPY data (field_text, field_int4) TO STDIN BINARY"))
{
StateAssertions(conn);
while (true)
{
var read = outStream.Read(data, len, data.Length - len);
if (read == 0)
break;
len += read;
}
Assert.That(len, Is.GreaterThan(conn.Settings.ReadBufferSize) & Is.LessThan(data.Length));
}
conn.ExecuteNonQuery("TRUNCATE data");
using (var inStream = conn.BeginRawBinaryCopy("COPY data (field_text, field_int4) FROM STDIN BINARY"))
{
StateAssertions(conn);
inStream.Write(data, 0, len);
}
Assert.That(conn.ExecuteScalar("SELECT COUNT(*) FROM DATA"), Is.EqualTo(iterations));
}
}
[Test, Description("Disposes a raw binary stream in the middle of an export")]
public void DisposeInMiddleOfRawBinaryExport()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (field_text TEXT, field_int2 SMALLINT, field_int4 INTEGER)");
conn.ExecuteNonQuery("INSERT INTO data (field_text, field_int4) VALUES ('HELLO', 8)");
var data = new byte[3];
using (var inStream = conn.BeginRawBinaryCopy("COPY data (field_text, field_int4) TO STDIN BINARY"))
{
// Read some bytes
var len = inStream.Read(data, 0, data.Length);
Assert.That(len, Is.EqualTo(data.Length));
}
Assert.That(conn.ExecuteScalar("SELECT 1"), Is.EqualTo(1));
}
}
[Test, Description("Disposes a raw binary stream in the middle of an import")]
public void DisposeInMiddleOfRawBinaryImport()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (field_text TEXT, field_int2 SMALLINT, field_int4 INTEGER)");
var inStream = conn.BeginRawBinaryCopy("COPY data (field_text, field_int4) FROM STDIN BINARY");
inStream.Write(NpgsqlRawCopyStream.BinarySignature, 0, NpgsqlRawCopyStream.BinarySignature.Length);
Assert.That(() => inStream.Dispose(), Throws.Exception
.TypeOf<PostgresException>()
.With.Property(nameof(PostgresException.SqlState)).EqualTo("22P04")
);
Assert.That(conn.ExecuteScalar("SELECT 1"), Is.EqualTo(1));
}
}
[Test, Description("Cancels a binary write")]
public void CancelRawBinaryImport()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (field_text TEXT, field_int2 SMALLINT, field_int4 INTEGER)");
var garbage = new byte[] {1, 2, 3, 4};
using (var s = conn.BeginRawBinaryCopy("COPY data (field_text, field_int4) FROM STDIN BINARY"))
{
s.Write(garbage, 0, garbage.Length);
s.Cancel();
}
Assert.That(conn.ExecuteScalar("SELECT COUNT(*) FROM data"), Is.EqualTo(0));
}
}
[Test]
public void ImportLargeValueRaw()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (blob BYTEA)");
var data = new byte[conn.Settings.WriteBufferSize + 10];
var dump = new byte[conn.Settings.WriteBufferSize + 200];
var len = 0;
// Insert a blob with a regular insert
using (var cmd = new NpgsqlCommand("INSERT INTO data (blob) VALUES (@p)", conn))
{
cmd.Parameters.AddWithValue("p", data);
cmd.ExecuteNonQuery();
}
// Raw dump out
using (var outStream = conn.BeginRawBinaryCopy("COPY data (blob) TO STDIN BINARY"))
{
while (true)
{
var read = outStream.Read(dump, len, dump.Length - len);
if (read == 0)
break;
len += read;
}
Assert.That(len < dump.Length);
}
conn.ExecuteNonQuery("TRUNCATE data");
// And raw dump back in
using (var inStream = conn.BeginRawBinaryCopy("COPY data (blob) FROM STDIN BINARY"))
{
inStream.Write(dump, 0, len);
}
}
}
#endregion
#region Binary
[Test, Description("Roundtrips some data")]
public void BinaryRoundtrip()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (field_text TEXT, field_int2 SMALLINT)");
var longString = new StringBuilder(conn.Settings.WriteBufferSize + 50).Append('a').ToString();
using (var writer = conn.BeginBinaryImport("COPY data (field_text, field_int2) FROM STDIN BINARY"))
{
StateAssertions(conn);
writer.StartRow();
writer.Write("Hello");
writer.Write((short)8, NpgsqlDbType.Smallint);
writer.WriteRow("Something", (short)9);
writer.StartRow();
writer.Write(longString);
writer.WriteNull();
writer.Commit();
}
Assert.That(conn.ExecuteScalar("SELECT 1"), Is.EqualTo(1));
using (var reader = conn.BeginBinaryExport("COPY data (field_text, field_int2) TO STDIN BINARY"))
{
StateAssertions(conn);
Assert.That(reader.StartRow(), Is.EqualTo(2));
Assert.That(reader.Read<string>(), Is.EqualTo("Hello"));
Assert.That(reader.Read<int>(NpgsqlDbType.Smallint), Is.EqualTo(8));
Assert.That(reader.StartRow(), Is.EqualTo(2));
Assert.That(reader.IsNull, Is.False);
Assert.That(reader.Read<string>(), Is.EqualTo("Something"));
reader.Skip();
Assert.That(reader.StartRow(), Is.EqualTo(2));
Assert.That(reader.Read<string>(), Is.EqualTo(longString));
Assert.That(reader.IsNull, Is.True);
reader.Skip();
Assert.That(reader.StartRow(), Is.EqualTo(-1));
}
Assert.That(conn.ExecuteScalar("SELECT 1"), Is.EqualTo(1));
}
}
[Test]
public void CancelBinaryImport()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (field_text TEXT, field_int2 SMALLINT, field_int4 INTEGER)");
using (var writer = conn.BeginBinaryImport("COPY data (field_text, field_int4) FROM STDIN BINARY"))
{
writer.StartRow();
writer.Write("Hello");
writer.Write(8);
// No commit should rollback
}
Assert.That(conn.ExecuteScalar(@"SELECT COUNT(*) FROM data"), Is.EqualTo(0));
}
}
[Test, IssueLink("https://github.com/npgsql/npgsql/issues/657")]
public void ImportBytea()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (field BYTEA)");
var data = new byte[] {1, 5, 8};
using (var writer = conn.BeginBinaryImport("COPY data (field) FROM STDIN BINARY"))
{
writer.StartRow();
writer.Write(data, NpgsqlDbType.Bytea);
writer.Commit();
}
Assert.That(conn.ExecuteScalar("SELECT field FROM data"), Is.EqualTo(data));
}
}
[Test]
public void ImportStringArray()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (field TEXT[])");
var data = new[] {"foo", "a", "bar"};
using (var writer = conn.BeginBinaryImport("COPY data (field) FROM STDIN BINARY"))
{
writer.StartRow();
writer.Write(data, NpgsqlDbType.Array | NpgsqlDbType.Text);
writer.Commit();
}
Assert.That(conn.ExecuteScalar("SELECT field FROM data"), Is.EqualTo(data));
}
}
[Test, IssueLink("https://github.com/npgsql/npgsql/issues/816")]
public void ImportStringWithBufferLength()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (field TEXT)");
var data = new string('a', conn.Settings.WriteBufferSize);
using (var writer = conn.BeginBinaryImport("COPY data (field) FROM STDIN BINARY"))
{
writer.StartRow();
writer.Write(data, NpgsqlDbType.Text);
writer.Commit();
}
Assert.That(conn.ExecuteScalar("SELECT field FROM data"), Is.EqualTo(data));
}
}
[Test, IssueLink("https://github.com/npgsql/npgsql/issues/662")]
public void ImportDirectBuffer()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (blob BYTEA)");
using (var writer = conn.BeginBinaryImport("COPY data (blob) FROM STDIN BINARY"))
{
// Big value - triggers use of the direct write optimization
var data = new byte[conn.Settings.WriteBufferSize + 10];
writer.StartRow();
writer.Write(data);
writer.StartRow();
writer.Write(data);
}
}
}
[Test, IssueLink("https://github.com/npgsql/npgsql/issues/661")]
[Ignore("Unreliable")]
public void UnexpectedExceptionBinaryImport()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (blob BYTEA)");
var data = new byte[conn.Settings.WriteBufferSize + 10];
var writer = conn.BeginBinaryImport("COPY data (blob) FROM STDIN BINARY");
using (var conn2 = OpenConnection())
conn2.ExecuteNonQuery($"SELECT pg_terminate_backend({conn.ProcessID})");
Thread.Sleep(50);
Assert.That(() =>
{
writer.StartRow();
writer.Write(data);
writer.Dispose();
}, Throws.Exception.TypeOf<IOException>());
Assert.That(conn.FullState, Is.EqualTo(ConnectionState.Broken));
}
}
[Test, IssueLink("https://github.com/npgsql/npgsql/issues/657")]
[Explicit]
public void ImportByteaMassive()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (field BYTEA)");
const int iterations = 10000;
var data = new byte[1024*1024];
using (var writer = conn.BeginBinaryImport("COPY data (field) FROM STDIN BINARY"))
{
for (var i = 0; i < iterations; i++)
{
if (i%100 == 0)
Console.WriteLine("Iteration " + i);
writer.StartRow();
writer.Write(data, NpgsqlDbType.Bytea);
}
}
Assert.That(conn.ExecuteScalar("SELECT COUNT(*) FROM data"), Is.EqualTo(iterations));
}
}
[Test]
public void ExportLongString()
{
const int iterations = 100;
using (var conn = OpenConnection())
{
var len = conn.Settings.WriteBufferSize;
conn.ExecuteNonQuery("CREATE TEMP TABLE data (foo1 TEXT, foo2 TEXT, foo3 TEXT, foo4 TEXT, foo5 TEXT)");
using (var cmd = new NpgsqlCommand("INSERT INTO data VALUES (@p, @p, @p, @p, @p)", conn))
{
cmd.Parameters.AddWithValue("p", new string('x', len));
for (var i = 0; i < iterations; i++)
cmd.ExecuteNonQuery();
}
using (var reader = conn.BeginBinaryExport("COPY data (foo1, foo2, foo3, foo4, foo5) TO STDIN BINARY"))
{
for (var row = 0; row < iterations; row++)
{
Assert.That(reader.StartRow(), Is.EqualTo(5));
for (var col = 0; col < 5; col++)
Assert.That(reader.Read<string>().Length, Is.EqualTo(len));
}
}
}
}
[Test, IssueLink("https://github.com/npgsql/npgsql/issues/1134")]
public void ReadBitString()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (bits BIT(3), bitarray BIT(3)[])");
conn.ExecuteNonQuery("INSERT INTO data (bits, bitarray) VALUES (B'101', ARRAY[B'101', B'111'])");
using (var reader = conn.BeginBinaryExport("COPY data (bits, bitarray) TO STDIN BINARY"))
{
reader.StartRow();
Assert.That(reader.Read<BitArray>(), Is.EqualTo(new BitArray(new[] { true, false, true })));
Assert.That(reader.Read<BitArray[]>(), Is.EqualTo(new[]
{
new BitArray(new[] { true, false, true }),
new BitArray(new[] { true, true, true })
}));
}
}
}
[Test]
public void Array()
{
var expected = new[] { 8 };
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (arr INTEGER[])");
using (var writer = conn.BeginBinaryImport("COPY data (arr) FROM STDIN BINARY"))
{
writer.StartRow();
writer.Write(expected);
writer.Commit();
}
using (var reader = conn.BeginBinaryExport("COPY data (arr) TO STDIN BINARY"))
{
reader.StartRow();
Assert.That(reader.Read<int[]>(), Is.EqualTo(expected));
}
}
}
[Test]
public void Enum()
{
var expected = Mood.Happy;
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TYPE pg_temp.mood AS ENUM ('sad', 'ok', 'happy')");
conn.ReloadTypes();
conn.TypeMapper.MapEnum<Mood>();
conn.ExecuteNonQuery("CREATE TEMP TABLE data (mymood mood)");
using (var writer = conn.BeginBinaryImport("COPY data (mymood) FROM STDIN BINARY"))
{
writer.StartRow();
writer.Write(expected);
writer.Commit();
}
using (var reader = conn.BeginBinaryExport("COPY data (mymood) TO STDIN BINARY"))
{
reader.StartRow();
Assert.That(reader.Read<Mood>(), Is.EqualTo(expected));
}
}
}
enum Mood { Sad, Ok, Happy };
[Test, IssueLink("https://github.com/npgsql/npgsql/issues/1440")]
public void ErrorDuringImport()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (foo INT, CONSTRAINT uq UNIQUE(foo))");
var writer = conn.BeginBinaryImport("COPY DATA (foo) FROM STDIN BINARY");
writer.StartRow();
writer.Write(8);
writer.StartRow();
writer.Write(8);
Assert.That(() => writer.Commit(), Throws.Exception
.TypeOf<PostgresException>()
.With.Property(nameof(PostgresException.SqlState)).EqualTo("23505"));
Assert.That(conn.ExecuteScalar("SELECT 1"), Is.EqualTo(1));
}
}
[Test]
public void ImportCannotWriteAfterCommit()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (foo INT)");
try
{
using (var writer = conn.BeginBinaryImport("COPY DATA (foo) FROM STDIN BINARY"))
{
writer.StartRow();
writer.Write(8);
writer.Commit();
writer.StartRow();
Assert.Fail("StartRow should have thrown");
}
}
catch (InvalidOperationException)
{
Assert.That(conn.ExecuteScalar("SELECT COUNT(*) FROM data"), Is.EqualTo(1));
}
}
}
[Test]
public void ImportCommitInMiddleOfRow()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (foo INT, bar TEXT)");
try
{
using (var writer = conn.BeginBinaryImport("COPY DATA (foo, bar) FROM STDIN BINARY"))
{
writer.StartRow();
writer.Write(8);
writer.Write("hello");
writer.StartRow();
writer.Write(9);
writer.Commit();
Assert.Fail("Commit should have thrown");
}
}
catch (InvalidOperationException)
{
Assert.That(conn.ExecuteScalar("SELECT COUNT(*) FROM data"), Is.EqualTo(0));
}
}
}
[Test]
public void ImportExceptionDoesNotCommit()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (foo INT)");
try
{
using (var writer = conn.BeginBinaryImport("COPY DATA (foo) FROM STDIN BINARY"))
{
writer.StartRow();
writer.Write(8);
throw new Exception("FOO");
}
}
catch (Exception e) when (e.Message == "FOO")
{
Assert.That(conn.ExecuteScalar("SELECT COUNT(*) FROM data"), Is.Zero);
}
}
}
#endregion
#region Text
[Test]
public void TextImport()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (field_text TEXT, field_int2 SMALLINT, field_int4 INTEGER)");
const string line = "HELLO\t1\n";
// Short write
var writer = conn.BeginTextImport("COPY data (field_text, field_int4) FROM STDIN");
StateAssertions(conn);
writer.Write(line);
writer.Dispose();
Assert.That(conn.ExecuteScalar(@"SELECT COUNT(*) FROM data WHERE field_int4=1"), Is.EqualTo(1));
Assert.That(() => writer.Write(line), Throws.Exception.TypeOf<ObjectDisposedException>());
conn.ExecuteNonQuery("TRUNCATE data");
// Long (multi-buffer) write
var iterations = NpgsqlWriteBuffer.MinimumSize/line.Length + 100;
writer = conn.BeginTextImport("COPY data (field_text, field_int4) FROM STDIN");
for (var i = 0; i < iterations; i++)
writer.Write(line);
writer.Dispose();
Assert.That(conn.ExecuteScalar(@"SELECT COUNT(*) FROM data WHERE field_int4=1"), Is.EqualTo(iterations));
}
}
[Test]
public void CancelTextImport()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (field_text TEXT, field_int2 SMALLINT, field_int4 INTEGER)");
var writer = (NpgsqlCopyTextWriter)conn.BeginTextImport("COPY data (field_text, field_int4) FROM STDIN");
writer.Write("HELLO\t1\n");
writer.Cancel();
Assert.That(conn.ExecuteScalar(@"SELECT COUNT(*) FROM data"), Is.EqualTo(0));
}
}
[Test]
public void TextImportEmpty()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (field_text TEXT, field_int2 SMALLINT, field_int4 INTEGER)");
using (conn.BeginTextImport("COPY data (field_text, field_int4) FROM STDIN"))
{
}
Assert.That(conn.ExecuteScalar(@"SELECT COUNT(*) FROM data"), Is.EqualTo(0));
}
}
[Test]
public void TextExport()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (field_text TEXT, field_int2 SMALLINT, field_int4 INTEGER)");
var chars = new char[30];
// Short read
conn.ExecuteNonQuery("INSERT INTO data (field_text, field_int4) VALUES ('HELLO', 1)");
var reader = conn.BeginTextExport("COPY data (field_text, field_int4) TO STDIN");
StateAssertions(conn);
Assert.That(reader.Read(chars, 0, chars.Length), Is.EqualTo(8));
Assert.That(new string(chars, 0, 8), Is.EqualTo("HELLO\t1\n"));
Assert.That(reader.Read(chars, 0, chars.Length), Is.EqualTo(0));
Assert.That(reader.Read(chars, 0, chars.Length), Is.EqualTo(0));
reader.Dispose();
Assert.That(() => reader.Read(chars, 0, chars.Length), Throws.Exception.TypeOf<ObjectDisposedException>());
conn.ExecuteNonQuery("TRUNCATE data");
}
}
[Test]
public void DisposeInMiddleOfTextExport()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (field_text TEXT, field_int2 SMALLINT, field_int4 INTEGER)");
conn.ExecuteNonQuery("INSERT INTO data (field_text, field_int4) VALUES ('HELLO', 1)");
var reader = conn.BeginTextExport("COPY data (field_text, field_int4) TO STDIN");
reader.Dispose();
// Make sure the connection is stil OK
Assert.That(conn.ExecuteScalar("SELECT 1"), Is.EqualTo(1));
}
}
#endregion
#region Other
[Test, Description("Starts a transaction before a COPY, testing that prepended messages are handled well")]
public void PrependedMessages()
{
using (var conn = OpenConnection())
{
conn.BeginTransaction();
TextImport();
}
}
[Test]
public void UndefinedTable()
{
using (var conn = OpenConnection())
Assert.That(() => conn.BeginBinaryImport("COPY undefined_table (field_text, field_int2) FROM STDIN BINARY"),
Throws.Exception.TypeOf<PostgresException>()
.With.Property(nameof(PostgresException.SqlState)).EqualTo("42P01")
);
}
[Test, IssueLink("https://github.com/npgsql/npgsql/issues/621")]
public void CloseDuringCopy()
{
// TODO: Check no broken connections were returned to the pool
using (var conn = OpenConnection()) {
conn.ExecuteNonQuery("CREATE TEMP TABLE data (field_text TEXT, field_int2 SMALLINT, field_int4 INTEGER)");
conn.BeginBinaryImport("COPY data (field_text, field_int4) FROM STDIN BINARY");
}
using (var conn = OpenConnection()) {
conn.ExecuteNonQuery("CREATE TEMP TABLE data (field_text TEXT, field_int2 SMALLINT, field_int4 INTEGER)");
conn.BeginBinaryExport("COPY data (field_text, field_int2) TO STDIN BINARY");
}
using (var conn = OpenConnection()) {
conn.ExecuteNonQuery("CREATE TEMP TABLE data (field_text TEXT, field_int2 SMALLINT, field_int4 INTEGER)");
conn.BeginRawBinaryCopy("COPY data (field_text, field_int4) FROM STDIN BINARY");
}
using (var conn = OpenConnection()) {
conn.ExecuteNonQuery("CREATE TEMP TABLE data (field_text TEXT, field_int2 SMALLINT, field_int4 INTEGER)");
conn.BeginRawBinaryCopy("COPY data (field_text, field_int4) TO STDIN BINARY");
}
using (var conn = OpenConnection()) {
conn.ExecuteNonQuery("CREATE TEMP TABLE data (field_text TEXT, field_int2 SMALLINT, field_int4 INTEGER)");
conn.BeginTextImport("COPY data (field_text, field_int4) FROM STDIN");
}
using (var conn = OpenConnection()) {
conn.ExecuteNonQuery("CREATE TEMP TABLE data (field_text TEXT, field_int2 SMALLINT, field_int4 INTEGER)");
conn.BeginTextExport("COPY data (field_text, field_int4) TO STDIN");
}
}
[Test, IssueLink("https://github.com/npgsql/npgsql/issues/994")]
public void NonAsciiColumnName()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (non_ascii_éè TEXT)");
using (conn.BeginBinaryImport("COPY data (non_ascii_éè) FROM STDIN BINARY")) { }
}
}
[Test, IssueLink("http://stackoverflow.com/questions/37431054/08p01-insufficient-data-left-in-message-for-nullable-datetime/37431464")]
public void WriteNullValues()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (foo1 INT, foo2 UUID, foo3 INT, foo4 UUID)");
using (var writer = conn.BeginBinaryImport("COPY data (foo1, foo2, foo3, foo4) FROM STDIN BINARY"))
{
writer.StartRow();
writer.Write(DBNull.Value, NpgsqlDbType.Integer);
writer.Write((string)null, NpgsqlDbType.Uuid);
writer.Write(DBNull.Value);
writer.Write((string)null);
writer.Commit();
}
using (var cmd = new NpgsqlCommand("SELECT foo1,foo2,foo3,foo4 FROM data", conn))
using (var reader = cmd.ExecuteReader())
{
Assert.That(reader.Read(), Is.True);
for (var i = 0; i < reader.FieldCount; i++)
Assert.That(reader.IsDBNull(i), Is.True);
}
}
}
[Test]
public void WriteDifferentTypes()
{
using (var conn = OpenConnection())
{
conn.ExecuteNonQuery("CREATE TEMP TABLE data (foo INT, bar INT[])");
using (var writer = conn.BeginBinaryImport("COPY data (foo, bar) FROM STDIN BINARY"))
{
writer.StartRow();
writer.Write(3.0, NpgsqlDbType.Integer);
writer.Write((object)new[] { 1, 2, 3 });
writer.StartRow();
writer.Write(3, NpgsqlDbType.Integer);
writer.Write((object)new List<int> { 4, 5, 6 });
writer.Commit();
}
Assert.That(conn.ExecuteScalar("SELECT COUNT(*) FROM data"), Is.EqualTo(2));
}
}
#endregion
#region Utils
/// <summary>
/// Checks that the connector state is properly managed for COPY operations
/// </summary>
void StateAssertions(NpgsqlConnection conn)
{
Assert.That(conn.Connector.State, Is.EqualTo(ConnectorState.Copy));
Assert.That(conn.State, Is.EqualTo(ConnectionState.Open));
Assert.That(conn.FullState, Is.EqualTo(ConnectionState.Open | ConnectionState.Fetching));
Assert.That(() => conn.ExecuteScalar("SELECT 1"), Throws.Exception.TypeOf<NpgsqlOperationInProgressException>());
}
#endregion
}
}