public void CanWatchOptions()
{
var services = new ServiceCollection().AddOptions();
services.AddSingleton <IConfigureOptions <FakeOptions> >(new CountIncrement(this));
var changeToken = new FakeChangeToken();
services.AddSingleton <IOptionsChangeTokenSource <FakeOptions> >(new FakeSource(changeToken));
var sp = services.BuildServiceProvider();
var monitor = sp.GetRequiredService <IOptionsMonitor <FakeOptions> >();
Assert.NotNull(monitor);
Assert.Equal("1", monitor.CurrentValue.Message);
string updatedMessage = null;
monitor.OnChange(o => updatedMessage = o.Message);
changeToken.InvokeChangeCallback();
Assert.Equal("2", updatedMessage);
// Verify old watch is changed too
Assert.Equal("2", monitor.CurrentValue.Message);
}
public void CanWatchNamedOptions()
{
var services = new ServiceCollection().AddOptions().AddSingleton <IConfigureOptions <FakeOptions> >(new CountIncrement(this));
var changeToken = new FakeChangeToken();
services.AddSingleton <IOptionsChangeTokenSource <FakeOptions> >(new FakeSource(changeToken)
{
Name = "#1"
});
var changeToken2 = new FakeChangeToken();
services.AddSingleton <IOptionsChangeTokenSource <FakeOptions> >(new FakeSource(changeToken2)
{
Name = "#2"
});
var sp = services.BuildServiceProvider();
var monitor = sp.GetRequiredService <IOptionsMonitor <FakeOptions> >();
Assert.NotNull(monitor);
Assert.Equal("1", monitor.Get("#1").Message);
string updatedMessage = null;
monitor.OnChange((o, n) => updatedMessage = o.Message + n);
changeToken.InvokeChangeCallback();
Assert.Equal("2#1", updatedMessage);
Assert.Equal("2", monitor.Get("#1").Message);
changeToken2.InvokeChangeCallback();
Assert.Equal("3#2", updatedMessage);
Assert.Equal("3", monitor.Get("#2").Message);
}
public void CanWatchOptionsWithMultipleSourcesAndCallbacks()
{
var services = new ServiceCollection().AddOptions();
services.AddSingleton <IConfigureOptions <FakeOptions> >(new CountIncrement(this));
var changeToken = new FakeChangeToken();
var tracker = new FakeSource(changeToken);
services.AddSingleton <IOptionsChangeTokenSource <FakeOptions> >(tracker);
var changeToken2 = new FakeChangeToken();
var tracker2 = new FakeSource(changeToken2);
services.AddSingleton <IOptionsChangeTokenSource <FakeOptions> >(tracker2);
var sp = services.BuildServiceProvider();
var monitor = sp.GetRequiredService <IOptionsMonitor <FakeOptions> >();
Assert.NotNull(monitor);
Assert.Equal("1", monitor.CurrentValue.Message);
string updatedMessage = null;
string updatedMessage2 = null;
var cleanup = monitor.OnChange(o => updatedMessage = o.Message);
var cleanup2 = monitor.OnChange(o => updatedMessage2 = o.Message);
changeToken.InvokeChangeCallback();
Assert.Equal("2", updatedMessage);
Assert.Equal("2", updatedMessage2);
// Verify old watch is changed too
Assert.Equal("2", monitor.CurrentValue.Message);
changeToken2.InvokeChangeCallback();
Assert.Equal("3", updatedMessage);
Assert.Equal("3", updatedMessage2);
// Verify old watch is changed too
Assert.Equal("3", monitor.CurrentValue.Message);
cleanup.Dispose();
changeToken.InvokeChangeCallback();
changeToken2.InvokeChangeCallback();
// Verify only the second message changed
Assert.Equal("3", updatedMessage);
Assert.Equal("5", updatedMessage2);
cleanup2.Dispose();
changeToken.InvokeChangeCallback();
changeToken2.InvokeChangeCallback();
// Verify no message changed
Assert.Equal("3", updatedMessage);
Assert.Equal("5", updatedMessage2);
}
public FakeSource(FakeChangeToken token)
{
Token = token;
}