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#region License
// The PostgreSQL License
//
// Copyright (C) 2015 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.Linq;
using System.Text;
using Npgsql;
using NpgsqlTypes;
using NUnit.Framework;
using NUnit.Framework.Constraints;
namespace Npgsql.Tests.Types
{
/// <summary>
/// Tests on PostgreSQL arrays
/// </summary>
/// <remarks>
/// http://www.postgresql.org/docs/current/static/arrays.html
/// </remarks>
class ArrayTests : TestBase
{
public ArrayTests(string backendVersion) : base(backendVersion) {}
[Test, Description("Roundtrips a simple, one-dimensional array of ints")]
public void Ints()
{
var expected = new[] { 1, 5, 9 };
var cmd = new NpgsqlCommand("SELECT @p1, @p2", Conn);
var p1 = new NpgsqlParameter("p1", NpgsqlDbType.Array | NpgsqlDbType.Integer);
var p2 = new NpgsqlParameter { ParameterName = "p2", Value = expected };
cmd.Parameters.Add(p1);
cmd.Parameters.Add(p2);
p1.Value = expected;
var reader = cmd.ExecuteReader();
reader.Read();
for (var i = 0; i < cmd.Parameters.Count; i++)
{
Assert.That(reader.GetValue(i), Is.EqualTo(expected));
Assert.That(reader.GetProviderSpecificValue(i), Is.EqualTo(expected));
Assert.That(reader.GetFieldValue<int[]>(i), Is.EqualTo(expected));
Assert.That(reader.GetFieldType(i), Is.EqualTo(typeof(Array)));
Assert.That(reader.GetProviderSpecificFieldType(i), Is.EqualTo(typeof(Array)));
}
cmd.Dispose();
}
[Test, Description("Roundtrips a large, one-dimensional array of ints that will be chunked")]
public void LongOneDimensional()
{
var expected = new int[Conn.BufferSize / 4 + 100];
for (var i = 0; i < expected.Length; i++)
expected[i] = i;
using (var cmd = new NpgsqlCommand("SELECT @p", Conn))
{
var p = new NpgsqlParameter { ParameterName = "p", Value = expected };
cmd.Parameters.Add(p);
using (var reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess))
{
reader.Read();
Assert.That(reader[0], Is.EqualTo(expected));
}
}
}
[Test, Description("Roundtrips a large, two-dimensional array of ints that will be chunked")]
public void LongTwoDimensional()
{
var len = Conn.BufferSize / 2 + 100;
var expected = new int[2, len];
for (var i = 0; i < len; i++)
expected[0,i] = i;
for (var i = 0; i < len; i++)
expected[1,i] = i;
using (var cmd = new NpgsqlCommand("SELECT @p", Conn))
{
var p = new NpgsqlParameter {ParameterName = "p", Value = expected};
cmd.Parameters.Add(p);
using (var reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess))
{
reader.Read();
Assert.That(reader[0], Is.EqualTo(expected));
}
}
}
[Test, Description("Roundtrips a long, one-dimensional array of strings, including a null")]
public void StringsWithNull()
{
var largeString = new StringBuilder();
largeString.Append('a', Conn.BufferSize);
var expected = new[] { "value1", null, largeString.ToString(), "val3" };
using (var cmd = new NpgsqlCommand("SELECT @p", Conn))
{
var p = new NpgsqlParameter("p", NpgsqlDbType.Array | NpgsqlDbType.Text) { Value = expected };
cmd.Parameters.Add(p);
using (var reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess))
{
reader.Read();
Assert.That(reader.GetFieldValue<string[]>(0), Is.EqualTo(expected));
}
}
}
[Test, Description("Roundtrips a zero-dimensional array of ints, should return empty one-dimensional")]
public void ZeroDimensional()
{
var expected = new int[0];
var cmd = new NpgsqlCommand("SELECT @p", Conn);
var p = new NpgsqlParameter("p", NpgsqlDbType.Array | NpgsqlDbType.Integer) { Value = expected };
cmd.Parameters.Add(p);
var reader = cmd.ExecuteReader();
reader.Read();
Assert.That(reader.GetValue(0), Is.EqualTo(expected));
Assert.That(reader.GetProviderSpecificValue(0), Is.EqualTo(expected));
Assert.That(reader.GetFieldValue<int[]>(0), Is.EqualTo(expected));
cmd.Dispose();
}
[Test, Description("Roundtrips a two-dimensional array of ints")]
public void TwoDimensionalInts()
{
var expected = new[,] { { 1, 2, 3 }, { 7, 8, 9 } };
var cmd = new NpgsqlCommand("SELECT @p1, @p2", Conn);
var p1 = new NpgsqlParameter("p1", NpgsqlDbType.Array | NpgsqlDbType.Integer);
var p2 = new NpgsqlParameter { ParameterName = "p2", Value = expected };
cmd.Parameters.Add(p1);
cmd.Parameters.Add(p2);
p1.Value = expected;
var reader = cmd.ExecuteReader();
reader.Read();
Assert.That(reader.GetValue(0), Is.EqualTo(expected));
Assert.That(reader.GetProviderSpecificValue(0), Is.EqualTo(expected));
Assert.That(reader.GetFieldValue<int[,]>(0), Is.EqualTo(expected));
cmd.Dispose();
}
[Test, Description("Reads a one-dimensional array dates, both as DateTime and as the provider-specific NpgsqlDate")]
public void ReadProviderSpecificType()
{
var expectedRegular = new[] { new DateTime(2014, 1, 4), new DateTime(2014, 1, 8) };
var expectedPsv = new[] { new NpgsqlDate(2014, 1, 4), new NpgsqlDate(2014, 1, 8) };
var cmd = new NpgsqlCommand(@"SELECT '{ ""2014-01-04"", ""2014-01-08"" }'::DATE[]", Conn);
var reader = cmd.ExecuteReader();
reader.Read();
Assert.That(reader.GetValue(0), Is.EqualTo(expectedRegular));
Assert.That(reader.GetFieldValue<DateTime[]>(0), Is.EqualTo(expectedRegular));
Assert.That(reader.GetProviderSpecificValue(0), Is.EqualTo(expectedPsv));
Assert.That(reader.GetFieldValue<NpgsqlDate[]>(0), Is.EqualTo(expectedPsv));
cmd.Dispose();
}
[Test, Description("Reads an one-dimensional array with lower bound != 0")]
public void ReadNonZeroLowerBounded()
{
var cmd = new NpgsqlCommand("SELECT '[2:3]={ 8, 9 }'::INT[]", Conn);
var reader = cmd.ExecuteReader();
reader.Read();
Assert.That(reader.GetFieldValue<int[]>(0), Is.EqualTo(new[] { 8, 9 }));
reader.Close();
cmd.Dispose();
cmd = new NpgsqlCommand("SELECT '[2:3][2:3]={ {8,9}, {1,2} }'::INT[][]", Conn);
reader = cmd.ExecuteReader();
reader.Read();
Assert.That(reader.GetFieldValue<int[,]>(0), Is.EqualTo(new[,] { {8,9}, {1,2} }));
reader.Close();
cmd.Dispose();
}
[Test, Description("Roundtrips a one-dimensional array of bytea values")]
public void Byteas()
{
var expected = new[] { new byte[] { 1, 2 }, new byte[] { 3, 4, }};
var cmd = new NpgsqlCommand("SELECT @p1, @p2", Conn);
var p1 = new NpgsqlParameter("p1", NpgsqlDbType.Array | NpgsqlDbType.Bytea);
var p2 = new NpgsqlParameter { ParameterName = "p2", Value = expected };
cmd.Parameters.Add(p1);
cmd.Parameters.Add(p2);
p1.Value = expected;
var reader = cmd.ExecuteReader();
reader.Read();
Assert.That(reader.GetValue(0), Is.EqualTo(expected));
Assert.That(reader.GetFieldValue<byte[][]>(0), Is.EqualTo(expected));
Assert.That(reader.GetFieldType(0), Is.EqualTo(typeof(Array)));
Assert.That(reader.GetProviderSpecificFieldType(0), Is.EqualTo(typeof(Array)));
cmd.Dispose();
}
[Test, Description("Roundtrips a non-generic IList as an array")]
// ReSharper disable once InconsistentNaming
public void IListNonGeneric()
{
var expected = new ArrayList(new[] { 1, 2, 3 });
var cmd = new NpgsqlCommand("SELECT @p", Conn);
var p = new NpgsqlParameter("p", NpgsqlDbType.Array | NpgsqlDbType.Integer) { Value = expected };
cmd.Parameters.Add(p);
Assert.That(cmd.ExecuteScalar(), Is.EqualTo(expected.ToArray()));
cmd.Dispose();
}
[Test, Description("Roundtrips a generic IList as an array")]
// ReSharper disable once InconsistentNaming
public void IListGeneric()
{
var expected = new[] { 1, 2, 3 };
using (var cmd = new NpgsqlCommand("SELECT @p1, @p2", Conn)) {
var p1 = new NpgsqlParameter {ParameterName = "p1", Value = expected.ToList()};
var p2 = new NpgsqlParameter {ParameterName = "p2", Value = expected.ToList()};
cmd.Parameters.Add(p1);
cmd.Parameters.Add(p2);
using (var reader = cmd.ExecuteReader())
{
reader.Read();
Assert.That(reader[0], Is.EqualTo(expected.ToArray()));
Assert.That(reader[1], Is.EqualTo(expected.ToArray()));
}
}
}
[Test, IssueLink("https://github.com/npgsql/npgsql/issues/844")]
public void IEnumerableThrowsFriendlyException()
{
using (var cmd = new NpgsqlCommand("SELECT @p1", Conn))
{
cmd.Parameters.AddWithValue("p1", Enumerable.Range(1, 3));
Assert.That(() => cmd.ExecuteScalar(), Throws.Exception.TypeOf<NotSupportedException>().With.Message.Contains("use .ToList()/.ToArray() instead"));
}
}
}
}