/// <summary>
/// Runs the specified fixture action if a property exists in the fixture that matches the specified value.
/// </summary>
/// <param name="fixture">The fixture.</param>
/// <param name="key">The key.</param>
/// <param name="value">The value.</param>
/// <param name="action">The action.</param>
/// <returns></returns>
public static IMvcFunctionalTestFixture WhenHavingStringProperty(this IMvcFunctionalTestFixture fixture,
string key,
string value,
Action <IMvcFunctionalTestFixture> action) =>
fixture.WhenHavingStringProperty(key, x => x == value, action);