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// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
namespace System.Data.Entity.Query.LinqToEntities
{
using System.Collections.Generic;
using System.Data.Entity.TestModels.ArubaModel;
using System.Data.Entity.Resources;
using System.IO;
using System.Linq;
using Xunit;
public class EnumTests : FunctionalTestBase
{
[Fact]
public void Cast_property_to_enum()
{
using (var context = new ArubaContext())
{
var expectedSql =
@"SELECT
[Extent1].[c33_enum] AS [c33_enum]
FROM [dbo].[ArubaAllTypes] AS [Extent1]
WHERE 1 = CAST( [Extent1].[c33_enum] AS int)";
var query = context.AllTypes.Where(a => a.c33_enum == ArubaEnum.EnumValue1).Select(a => a.c33_enum);
QueryTestHelpers.VerifyDbQuery(query, expectedSql);
// verify that correct enums are filtered out (verify count and value)
var results = query.ToList();
var expectedCount = context.AllTypes.ToList().Count(a => a.c33_enum == ArubaEnum.EnumValue1);
Assert.True(results.All(r => r == ArubaEnum.EnumValue1));
Assert.Equal(expectedCount, results.Count);
}
}
[Fact]
public void Cast_property_to_byte_enum()
{
using (var context = new ArubaContext())
{
var expectedSql =
@"SELECT
[Extent1].[c34_byteenum] AS [c34_byteenum]
FROM [dbo].[ArubaAllTypes] AS [Extent1]
WHERE 2 = CAST( [Extent1].[c34_byteenum] AS int)";
var query = context.AllTypes.Where(a => a.c34_byteenum == ArubaByteEnum.ByteEnumValue2).Select(a => a.c34_byteenum);
QueryTestHelpers.VerifyDbQuery(query, expectedSql);
// verify that correct enums are filtered out (verify count and value)
var results = query.ToList();
var expectedCount = context.AllTypes.ToList().Count(a => a.c34_byteenum == ArubaByteEnum.ByteEnumValue2);
Assert.True(results.All(r => r == ArubaByteEnum.ByteEnumValue2));
Assert.Equal(expectedCount, results.Count);
}
}
[Fact]
public void Cast_constant_to_enum()
{
using (var context = new ArubaContext())
{
var expectedSql =
@"SELECT
[Extent1].[c33_enum] AS [c33_enum]
FROM [dbo].[ArubaAllTypes] AS [Extent1]
WHERE 1 = CAST( [Extent1].[c33_enum] AS int)";
var query = context.AllTypes.Where(a => a.c33_enum == (ArubaEnum)1).Select(a => a.c33_enum);
QueryTestHelpers.VerifyDbQuery(query, expectedSql);
// verify that correct enums are filtered out (verify count and value)
var results = query.ToList();
var expectedCount = context.AllTypes.ToList().Count(a => a.c33_enum == (ArubaEnum)1);
Assert.True(results.All(r => r == ArubaEnum.EnumValue1));
Assert.Equal(expectedCount, results.Count);
}
}
[Fact]
public void Cast_constant_to_byte_enum()
{
using (var context = new ArubaContext())
{
var expectedSql =
@"SELECT
[Extent1].[c34_byteenum] AS [c34_byteenum]
FROM [dbo].[ArubaAllTypes] AS [Extent1]
WHERE 2 = CAST( [Extent1].[c34_byteenum] AS int)";
var query = context.AllTypes.Where(a => a.c34_byteenum == (ArubaByteEnum)2).Select(a => a.c34_byteenum);
QueryTestHelpers.VerifyDbQuery(query, expectedSql);
// verify that correct enums are filtered out (verify count and value)
var results = query.ToList();
var expectedCount = context.AllTypes.ToList().Count(a => a.c34_byteenum == (ArubaByteEnum)2);
Assert.True(results.All(r => r == ArubaByteEnum.ByteEnumValue2));
Assert.Equal(expectedCount, results.Count);
}
}
[Fact]
public void Is_on_enum_not_supported()
{
using (var context = new ArubaContext())
{
var message = Assert.Throws<NotSupportedException>(() =>
context.AllTypes.Select(a => (ArubaEnum?)a.c33_enum is ArubaEnum).ToList()).Message;
Assert.True(
message.Contains(
Strings.ELinq_UnsupportedIsOrAs("TypeIs", "System.Nullable`1", "System.Data.Entity.TestModels.ArubaModel.ArubaEnum")));
}
}
[Fact]
public void As_on_enum_not_supported()
{
using (var context = new ArubaContext())
{
var message = Assert.Throws<NotSupportedException>(() =>
context.AllTypes.Select(a => a.c33_enum as Nullable<ArubaEnum>).ToList()).Message;
Assert.True(
message.Contains(
Strings.ELinq_UnsupportedIsOrAs("TypeAs", "System.Data.Entity.TestModels.ArubaModel.ArubaEnum", "System.Nullable`1")));
}
}
[Fact]
public void Unnamed_enum_constant_in_Where_clause()
{
using (var context = new ArubaContext())
{
var expectedSql =
@"SELECT
[Extent1].[c33_enum] AS [c33_enum]
FROM [dbo].[ArubaAllTypes] AS [Extent1]
WHERE 42 = CAST( [Extent1].[c33_enum] AS int)";
var query = context.AllTypes.Where(a => a.c33_enum == (ArubaEnum)42).Select(p => p.c33_enum);
QueryTestHelpers.VerifyDbQuery(query, expectedSql);
// verify all results are filtered out
var results = query.ToList();
Assert.False(results.Any());
}
}
[Fact]
public void Enum_in_OrderBy_clause()
{
using (var context = new ArubaContext())
{
var expectedSql =
@"SELECT
[Extent1].[c33_enum] AS [c33_enum]
FROM [dbo].[ArubaAllTypes] AS [Extent1]
ORDER BY [Extent1].[c33_enum] ASC";
var query = context.AllTypes.OrderBy(a => a.c33_enum).Select(a => a.c33_enum);
QueryTestHelpers.VerifyDbQuery(query, expectedSql);
// verify order is correct
var results = query.ToList();
var highest = (int)results[0];
foreach (var result in results)
{
Assert.True((int)result >= highest);
highest = (int)result;
}
}
}
[Fact]
public void Byte_based_enum_in_OrderByDescending_clause()
{
using (var context = new ArubaContext())
{
var expectedSql =
@"SELECT
[Extent1].[c34_byteenum] AS [c34_byteenum]
FROM [dbo].[ArubaAllTypes] AS [Extent1]
ORDER BY [Extent1].[c34_byteenum] DESC";
var query = context.AllTypes.OrderByDescending(a => a.c34_byteenum).Select(a => a.c34_byteenum);
QueryTestHelpers.VerifyDbQuery(query, expectedSql);
// verify order is correct
var results = query.ToList();
var lowest = (int)results[0];
foreach (var result in results)
{
Assert.True((int)result <= lowest);
lowest = (int)result;
}
}
}
[Fact]
public void Enum_in_OrderByThenBy_clause()
{
using (var context = new ArubaContext())
{
var expectedSql =
@"SELECT
[Extent1].[c33_enum] AS [c33_enum],
[Extent1].[c34_byteenum] AS [c34_byteenum]
FROM [dbo].[ArubaAllTypes] AS [Extent1]
ORDER BY [Extent1].[c33_enum] ASC, [Extent1].[c34_byteenum] DESC";
var query = context.AllTypes.OrderBy(p => p.c33_enum).ThenByDescending(a => a.c34_byteenum).Select(a => new { a.c33_enum, a.c34_byteenum });
QueryTestHelpers.VerifyDbQuery(query, expectedSql);
var results = query.ToList();
var expected = context.AllTypes.Select(a => new { a.c33_enum, a.c34_byteenum }).ToList()
.OrderBy(p => p.c33_enum).ThenByDescending(a => a.c34_byteenum).ToList();
Assert.Equal(results.Count, expected.Count());
for (int i = 0; i < results.Count; i++)
{
Assert.Equal(results[i].c33_enum, expected[i].c33_enum);
Assert.Equal(results[i].c34_byteenum, expected[i].c34_byteenum);
}
}
}
[Fact]
public void Enum_in_GroupBy_clause()
{
using (var context = new ArubaContext())
{
var expectedSql =
@"SELECT
[GroupBy1].[K1] AS [c33_enum],
[GroupBy1].[A1] AS [C1]
FROM ( SELECT
[Extent1].[c33_enum] AS [K1],
COUNT(1) AS [A1]
FROM [dbo].[ArubaAllTypes] AS [Extent1]
GROUP BY [Extent1].[c33_enum]
) AS [GroupBy1]";
var query = context.AllTypes.GroupBy(a => a.c33_enum).Select(g => new { g.Key, Count = g.Count() });
QueryTestHelpers.VerifyDbQuery(query, expectedSql);
var results = query.ToList().OrderBy(r => r.Key).ToList();
var expected = context.AllTypes.ToList().GroupBy(a => a.c33_enum).Select(g => new { g.Key, Count = g.Count() }).OrderBy(r => r.Key).ToList();
QueryTestHelpers.VerifyQueryResult(expected, results, (o, i) => o.Key == i.Key && o.Count == i.Count);
}
}
[Fact]
public void Byte_based_enum_in_GroupBy_clause()
{
using (var context = new ArubaContext())
{
var expectedSql =
@"SELECT
1 AS [C1],
[GroupBy1].[K1] AS [c34_byteenum],
[GroupBy1].[A1] AS [C2]
FROM ( SELECT
[Extent1].[c34_byteenum] AS [K1],
COUNT(1) AS [A1]
FROM [dbo].[ArubaAllTypes] AS [Extent1]
GROUP BY [Extent1].[c34_byteenum]
) AS [GroupBy1]";
var query = context.AllTypes.GroupBy(p => p.c34_byteenum).Select(g => new { g.Key, Count = g.Count() });
QueryTestHelpers.VerifyDbQuery(query, expectedSql);
var results = query.ToList().OrderBy(r => r.Key).ToList();
var expected = context.AllTypes.ToList().GroupBy(a => a.c34_byteenum).Select(g => new { g.Key, Count = g.Count() }).OrderBy(r => r.Key).ToList();
QueryTestHelpers.VerifyQueryResult(expected, results, (o, i) => o.Key == i.Key && o.Count == i.Count);
}
}
[Fact]
public void Enum_in_Join_clause()
{
using (var context = new ArubaContext())
{
var expectedSql =
@"SELECT
[Limit1].[c1_int] AS [c1_int],
[Limit1].[c33_enum] AS [c33_enum],
[Extent2].[c1_int] AS [c1_int1],
[Extent2].[c33_enum] AS [c33_enum1]
FROM (SELECT TOP (1) [c].[c1_int] AS [c1_int], [c].[c33_enum] AS [c33_enum]
FROM [dbo].[ArubaAllTypes] AS [c] ) AS [Limit1]
INNER JOIN [dbo].[ArubaAllTypes] AS [Extent2] ON [Limit1].[c33_enum] = [Extent2].[c33_enum]";
var query = context.AllTypes.Take(1).Join(context.AllTypes, o => o.c33_enum, i => i.c33_enum, (o, i) => new { OuterKey = o.c1_int, OuterEnum = o.c33_enum, InnerKey = i.c1_int, InnerEnum = i.c33_enum });
QueryTestHelpers.VerifyDbQuery(query, expectedSql);
// verify that all all entities with matching enum values are joined
// and that correct enum values get joined
var firstEnum = context.AllTypes.ToList().Take(1).First().c33_enum;
var allTypesWithFirstEnumIds = context.AllTypes.ToList().Where(a => a.c33_enum == firstEnum).Select(a => a.c1_int).ToList();
var results = query.ToList();
Assert.Equal(allTypesWithFirstEnumIds.Count(), results.Count());
foreach (var result in results)
{
Assert.Equal(firstEnum, result.InnerEnum);
Assert.Equal(firstEnum, result.OuterEnum);
Assert.True(allTypesWithFirstEnumIds.Contains(result.OuterKey));
}
}
}
[Fact]
public void Enum_with_arithmetic_operations()
{
using (var context = new ArubaContext())
{
var expectedSql =
@"SELECT
[Extent1].[c1_int] AS [c1_int]
FROM [dbo].[ArubaAllTypes] AS [Extent1]
WHERE ( CAST( [Extent1].[c34_byteenum] AS int) <> CAST( CAST( CAST( [Extent1].[c34_byteenum] AS int) + 2 AS tinyint) AS int)) AND ( CAST( CAST( [Extent1].[c33_enum] AS int) + 1 AS int) <> CAST( CAST( [Extent1].[c33_enum] AS int) - 2 AS int))";
var query = context.AllTypes
.Where(a => a.c34_byteenum != a.c34_byteenum + 2)
.Where(a => a.c33_enum + 1 != a.c33_enum - 2)
.Select(a => a.c1_int);
QueryTestHelpers.VerifyDbQuery(query, expectedSql);
// verify that no results are filtered out (sanity)
var results = query.ToList();
var allTypesCount = context.AllTypes.Select(a => a.c1_int).ToList().Count();
Assert.Equal(allTypesCount, results.Count);
}
}
[Fact]
public void Enum_with_bitwise_operations()
{
using (var context = new ArubaContext())
{
var expectedSql =
@"SELECT
[Extent1].[c33_enum] AS [c33_enum],
[Extent1].[c34_byteenum] AS [c34_byteenum]
FROM [dbo].[ArubaAllTypes] AS [Extent1]
WHERE ( CAST( CAST( ( CAST( [Extent1].[c34_byteenum] AS int)) & (1) AS tinyint) AS int) > 0) AND (3 = CAST( ( CAST( [Extent1].[c33_enum] AS int)) | (1) AS int))";
var query = context.AllTypes
.Where(a => (a.c34_byteenum & ArubaByteEnum.ByteEnumValue1) > 0)
.Where(a => (a.c33_enum | (ArubaEnum)1) == (ArubaEnum)3)
.Select(a => new { a.c33_enum, a.c34_byteenum });
QueryTestHelpers.VerifyDbQuery(query, expectedSql);
// verify that correct enums are filtered out
var results = query.ToList();
foreach (var result in results)
{
Assert.Equal((ArubaEnum)3, result.c33_enum);
Assert.Equal(ArubaByteEnum.ByteEnumValue1, result.c34_byteenum);
}
}
}
[Fact]
public void Enum_with_coalesce_operator()
{
using (var context = new ArubaContext())
{
var expectedSql =
@"SELECT
CASE WHEN (CASE WHEN (0 = ([Extent1].[c1_int] % 2)) THEN [Extent1].[c33_enum] END IS NULL) THEN 1 WHEN (0 = ([Extent1].[c1_int] % 2)) THEN [Extent1].[c33_enum] END AS [C1]
FROM [dbo].[ArubaAllTypes] AS [Extent1]";
var query = context.AllTypes.Select(p => p.c1_int % 2 == 0 ? p.c33_enum : (ArubaEnum?)null)
.Select(a => a ?? ArubaEnum.EnumValue1);
QueryTestHelpers.VerifyDbQuery(query, expectedSql);
var results = query.ToList();
var expected = context.AllTypes.ToList().Select(p => p.c1_int % 2 == 0 ? p.c33_enum : (ArubaEnum?)null)
.Select(a => a ?? ArubaEnum.EnumValue1).ToList();
Assert.Equal(expected.Count, results.Count);
for (var i = 0; i < results.Count; i++)
{
Assert.Equal(expected[i], results[i]);
}
}
}
[Fact]
public void Casting_to_enum_undeclared_in_model_works()
{
using (var context = new ArubaContext())
{
var expectedSql =
@"SELECT
[Extent1].[c1_int] AS [c1_int]
FROM [dbo].[ArubaAllTypes] AS [Extent1]";
var query = context.AllTypes.Select(a => (FileAccess)a.c1_int);
QueryTestHelpers.VerifyDbQuery(query, expectedSql);
// not much to verify here, just make sure we don't throw
query.ToList();
}
}
}
}
|
