dotnet-installer/test/Microsoft.Extensions.DependencyModel.Tests/EnvironmentMockBuilder.cs

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// Copyright (c) .NET Foundation and contributors. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
using System.Collections.Generic;
using Microsoft.Extensions.EnvironmentAbstractions;
namespace Microsoft.Extensions.DependencyModel.Tests
{
public class EnvironmentMockBuilder
{
private Dictionary<string, string> _variables = new Dictionary<string, string>();
internal static IEnvironment Empty { get; } = Create().Build();
public static EnvironmentMockBuilder Create()
{
return new EnvironmentMockBuilder();
}
public EnvironmentMockBuilder AddVariable(string name, string value)
{
_variables.Add(name, value);
return this;
}
internal IEnvironment Build()
{
return new EnvironmentMock(_variables);
}
private class EnvironmentMock : IEnvironment
{
private Dictionary<string, string> _variables;
public EnvironmentMock(Dictionary<string, string> variables)
{
_variables = variables;
}
public string GetEnvironmentVariable(string name)
{
string value = null;
_variables.TryGetValue(name, out value);
return value;
}
}
}
}