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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.Migrations.Model
{
using System.Data.Entity.Resources;
using System.Linq;
using Xunit;
public class CreateIndexOperationTests
{
[Fact]
public void Can_get_and_set_table_and_column_info()
{
var createIndexOperation
= new CreateIndexOperation
{
Table = "T",
IsUnique = true,
Name = "Custom"
};
createIndexOperation.Columns.Add("C");
Assert.Equal("T", createIndexOperation.Table);
Assert.Equal("C", createIndexOperation.Columns.Single());
Assert.Equal("Custom", createIndexOperation.Name);
Assert.True(createIndexOperation.IsUnique);
Assert.Equal("IX_C", createIndexOperation.DefaultName);
Assert.False(createIndexOperation.HasDefaultName);
}
[Fact]
public void DefaultName_is_restricted_to_128_chars()
{
var createIndexOperation = new CreateIndexOperation
{
Table = "T"
};
createIndexOperation.Columns.Add(new string('C', 150));
Assert.Equal(128, createIndexOperation.DefaultName.Length);
}
[Fact]
public void Inverse_should_return_drop_index_operation()
{
var createIndexOperation
= new CreateIndexOperation
{
Table = "T",
IsUnique = true,
Name = "Custom",
IsSystem = true
};
createIndexOperation.Columns.Add("C");
var inverse = (DropIndexOperation)createIndexOperation.Inverse;
Assert.Same(createIndexOperation, inverse.Inverse);
Assert.Equal("T", inverse.Table);
Assert.Equal("Custom", inverse.Name);
Assert.Equal("C", inverse.Columns.Single());
Assert.True(inverse.IsSystem);
}
[Fact]
public void Ctor_should_validate_preconditions()
{
Assert.Equal(
new ArgumentException(Strings.ArgumentIsNullOrWhitespace("value")).Message,
Assert.Throws<ArgumentException>(
() => new CreateIndexOperation
{
Table = null
}).Message);
}
}
}
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