public void Should_Get_Property_Value_From_Task()
{
using (var sync = UnitTestSynchronizationContext.Begin())
{
var tcs = new TaskCompletionSource <Class2>();
var data = new Class1(tcs.Task);
var target = new ExpressionObserver(data, "Next^.Foo");
var result = new List <object>();
var sub = target.Subscribe(x => result.Add(x));
tcs.SetResult(new Class2("foo"));
sync.ExecutePostedCallbacks();
Assert.Equal(new[] { "foo" }, result);
}
}
public void Should_Get_Simple_Observable_Value()
{
using (var sync = UnitTestSynchronizationContext.Begin())
{
var source = new BehaviorSubject <string>("foo");
var data = new { Foo = source };
var target = new ExpressionObserver(data, "Foo");
var result = new List <object>();
var sub = target.Subscribe(x => result.Add(x));
source.OnNext("bar");
sync.ExecutePostedCallbacks();
Assert.Equal(new[] { PerspexProperty.UnsetValue, "foo", "bar" }, result);
}
}
public void Should_Not_Get_Task_Result_Without_Modifier_Char()
{
using (var sync = UnitTestSynchronizationContext.Begin())
{
var tcs = new TaskCompletionSource <string>();
var data = new { Foo = tcs.Task };
var target = new ExpressionObserver(data, "Foo");
var result = new List <object>();
var sub = target.Subscribe(x => result.Add(x));
tcs.SetResult("foo");
sync.ExecutePostedCallbacks();
Assert.Equal(1, result.Count);
Assert.IsType <Task <string> >(result[0]);
}
}
public void Should_Not_Get_Observable_Value_Without_Modifier_Char()
{
using (var sync = UnitTestSynchronizationContext.Begin())
{
var source = new BehaviorSubject <string>("foo");
var data = new { Foo = source };
var target = new ExpressionObserver(data, "Foo");
var result = new List <object>();
var sub = target.Subscribe(x => result.Add(x));
source.OnNext("bar");
sync.ExecutePostedCallbacks();
Assert.Equal(new[] { source }, result);
GC.KeepAlive(data);
}
}
public void Should_Get_Property_Value_From_Observable()
{
using (var sync = UnitTestSynchronizationContext.Begin())
{
var data = new Class1();
var target = new ExpressionObserver(data, "Next.Foo");
var result = new List <object>();
var sub = target.Subscribe(x => result.Add(x));
data.Next.OnNext(new Class2("foo"));
sync.ExecutePostedCallbacks();
Assert.Equal(new[] { PerspexProperty.UnsetValue, "foo" }, result);
sub.Dispose();
Assert.Equal(0, data.SubscriptionCount);
}
}
public void Should_Get_Property_Value_From_Observable_With_DataValidation_Enabled()
{
using (var sync = UnitTestSynchronizationContext.Begin())
{
var data = new Class1();
var target = new ExpressionObserver(data, "Next.Foo", true);
var result = new List <object>();
var sub = target.Subscribe(x => result.Add(x));
data.Next.OnNext(new Class2("foo"));
sync.ExecutePostedCallbacks();
Assert.Equal(new[] { new BindingNotification("foo") }, result);
sub.Dispose();
Assert.Equal(0, data.PropertyChangedSubscriptionCount);
}
}
public void Should_Get_Simple_Observable_Value_With_DataValidation_Enabled()
{
using (var sync = UnitTestSynchronizationContext.Begin())
{
var source = new BehaviorSubject <string>("foo");
var data = new { Foo = source };
var target = new ExpressionObserver(data, "Foo", true);
var result = new List <object>();
var sub = target.Subscribe(x => result.Add(x));
source.OnNext("bar");
sync.ExecutePostedCallbacks();
// What does it mean to have data validation on an observable? Without a use-case
// it's hard to know what to do here so for the moment the value is returned.
Assert.Equal(new[] { "foo", "bar" }, result);
}
}
public void Should_Get_Simple_Observable_Value()
{
using (var sync = UnitTestSynchronizationContext.Begin())
{
var source = new BehaviorSubject <string>("foo");
var data = new { Foo = source };
var target = ExpressionObserver.Create(data, o => o.Foo.StreamBinding());
var result = new List <object>();
var sub = target.Subscribe(x => result.Add(x));
source.OnNext("bar");
sync.ExecutePostedCallbacks();
Assert.Equal(new[] { "foo", "bar" }, result);
GC.KeepAlive(data);
}
}
public void Should_Work_With_Value_Type()
{
using (var sync = UnitTestSynchronizationContext.Begin())
{
var source = new BehaviorSubject <int>(1);
var data = new { Foo = source };
var target = ExpressionObserver.Create(data, o => o.Foo.StreamBinding());
var result = new List <int>();
var sub = target.Subscribe(x => result.Add((int)x));
source.OnNext(42);
sync.ExecutePostedCallbacks();
Assert.Equal(new[] { 1, 42 }, result);
GC.KeepAlive(data);
}
}
public void Should_Get_Simple_Task_Value_With_Data_DataValidation_Enabled()
{
using (var sync = UnitTestSynchronizationContext.Begin())
{
var tcs = new TaskCompletionSource <string>();
var data = new { Foo = tcs.Task };
var target = new ExpressionObserver(data, "Foo", true);
var result = new List <object>();
var sub = target.Subscribe(x => result.Add(x));
tcs.SetResult("foo");
sync.ExecutePostedCallbacks();
// What does it mean to have data validation on a Task? Without a use-case it's
// hard to know what to do here so for the moment the value is returned.
Assert.Equal(new [] { "foo" }, result);
}
}
public void Should_Not_Get_Task_Result_Without_StreamBinding()
{
using (var sync = UnitTestSynchronizationContext.Begin())
{
var tcs = new TaskCompletionSource <string>();
var data = new { Foo = tcs.Task };
var target = ExpressionObserver.Create(data, o => o.Foo);
var result = new List <object>();
var sub = target.Subscribe(x => result.Add(x));
tcs.SetResult("foo");
sync.ExecutePostedCallbacks();
Assert.Single(result);
Assert.IsType <Task <string> >(result[0]);
GC.KeepAlive(data);
}
}
public void Should_Get_Property_Value_From_Observable()
{
using (var sync = UnitTestSynchronizationContext.Begin())
{
var data = new Class1();
var target = ExpressionObserver.Create(data, o => o.Next.StreamBinding().Foo);
var result = new List <object>();
var sub = target.Subscribe(x => result.Add(x));
data.Next.OnNext(new Class2("foo"));
sync.ExecutePostedCallbacks();
Assert.Equal(new[] { "foo" }, result);
sub.Dispose();
Assert.Equal(0, data.PropertyChangedSubscriptionCount);
GC.KeepAlive(data);
}
}
public void Should_Return_BindingNotification_Error_For_Faulted_Task()
{
using (var sync = UnitTestSynchronizationContext.Begin())
{
var data = new { Foo = TaskFromException(new NotSupportedException()) };
var target = new ExpressionObserver(data, "Foo");
var result = new List <object>();
var sub = target.Subscribe(x => result.Add(x));
Assert.Equal(
new[]
{
new BindingNotification(
new AggregateException(new NotSupportedException()),
BindingErrorType.Error)
},
result);
}
}
public void Should_Return_BindingNotification_If_Stream_Operator_Applied_To_Not_Supported_Type()
{
using (var sync = UnitTestSynchronizationContext.Begin())
{
var data = new Class2("foo");
var target = new ExpressionObserver(data, "Foo^", true);
var result = new List <object>();
var sub = target.Subscribe(x => result.Add(x));
sync.ExecutePostedCallbacks();
Assert.Equal(
new[]
{
new BindingNotification(
new MarkupBindingChainException("Stream operator applied to unsupported type", "Foo^", "Foo^"),
BindingErrorType.Error)
},
result);
sub.Dispose();
}
}
public void Should_Return_BindingNotification_Error_On_Task_Exception()
{
using (var sync = UnitTestSynchronizationContext.Begin())
{
var tcs = new TaskCompletionSource <string>();
var data = new { Foo = tcs.Task };
var target = new ExpressionObserver(data, "Foo");
var result = new List <object>();
var sub = target.Subscribe(x => result.Add(x));
tcs.SetException(new NotSupportedException());
sync.ExecutePostedCallbacks();
Assert.Equal(
new[]
{
new BindingNotification(
new AggregateException(new NotSupportedException()),
BindingErrorType.Error)
},
result);
}
}
