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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using Xunit;
using System;
namespace Microsoft.Win32.RegistryTests
{
public class RegistryKey_DeleteSubKey_str : RegistryTestsBase
{
[Fact]
public void NegativeTests()
{
const string name = "Test";
// Should throw if passed subkey name is null
Assert.Throws<ArgumentNullException>(() => TestRegistryKey.DeleteSubKey(null));
// Should throw because subkey doesn't exists
Assert.Throws<ArgumentException>(() => TestRegistryKey.DeleteSubKey(name));
// Should throw if subkey has child subkeys
using (var rk = TestRegistryKey.CreateSubKey(name))
{
rk.CreateSubKey(name);
Assert.Throws<InvalidOperationException>(() => TestRegistryKey.DeleteSubKey(name));
}
// Should throw because RegistryKey is readonly
using (var rk = TestRegistryKey.OpenSubKey(string.Empty, false))
{
Assert.Throws<UnauthorizedAccessException>(() => rk.DeleteSubKey(name));
}
// Should throw if RegistryKey is closed
Assert.Throws<ObjectDisposedException>(() =>
{
TestRegistryKey.Dispose();
TestRegistryKey.DeleteSubKey(name);
});
}
[Fact]
public void DeleteSubKeyTest()
{
Assert.Equal(expected: 0, actual: TestRegistryKey.SubKeyCount);
Assert.NotNull(TestRegistryKey.CreateSubKey(TestRegistryKeyName));
Assert.Equal(expected: 1, actual: TestRegistryKey.SubKeyCount);
TestRegistryKey.DeleteSubKey(TestRegistryKeyName);
Assert.Null(TestRegistryKey.OpenSubKey(TestRegistryKeyName));
Assert.Equal(expected: 0, actual: TestRegistryKey.SubKeyCount);
}
}
}
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