public void OFPSimpleChildPropertyTest()
{
new TestScheduler().With(sched =>
{
var fixture = new HostTestFixture
{
Child = new TestFixture()
};
fixture.ObservableForProperty(x => x.Child.IsOnlyOneWord)
.ToObservableChangeSet(ImmediateScheduler.Instance)
.Bind(out var changes)
.Subscribe();
fixture.Child.IsOnlyOneWord = "Foo";
sched.Start();
Assert.Equal(1, changes.Count);
fixture.Child.IsOnlyOneWord = "Bar";
sched.Start();
Assert.Equal(2, changes.Count);
fixture.Child.IsOnlyOneWord = "Baz";
sched.Start();
Assert.Equal(3, changes.Count);
fixture.Child.IsOnlyOneWord = "Baz";
sched.Start();
Assert.Equal(3, changes.Count);
Assert.True(changes.All(x => x.Sender == fixture));
Assert.True(changes.All(x => x.GetPropertyName() == "Child.IsOnlyOneWord"));
changes.Select(x => x.Value).AssertAreEqual(new[] { "Foo", "Bar", "Baz" });
});
}
public void BindToIsNotFooledByIntermediateObjectSwitching()
{
new TestScheduler().With(sched =>
{
var input = new ScheduledSubject <string>(sched);
var fixture = new HostTestFixture {
Child = new TestFixture()
};
input.BindTo(fixture, x => x.Child.IsNotNullString);
Assert.Null(fixture.Child.IsNotNullString);
input.OnNext("Foo");
sched.Start();
Assert.Equal("Foo", fixture.Child.IsNotNullString);
fixture.Child = new TestFixture();
sched.Start();
Assert.Equal("Foo", fixture.Child.IsNotNullString);
input.OnNext("Bar");
sched.Start();
Assert.Equal("Bar", fixture.Child.IsNotNullString);
});
}
public void OFPChangingTheHostPropertyShouldFireAChildChangeNotificationOnlyIfThePreviousChildIsDifferent()
{
new TestScheduler().With(sched =>
{
var fixture = new HostTestFixture
{
Child = new TestFixture()
};
fixture.ObservableForProperty(x => x.Child.IsOnlyOneWord)
.ToObservableChangeSet(ImmediateScheduler.Instance)
.Bind(out var changes)
.Subscribe();
fixture.Child.IsOnlyOneWord = "Foo";
sched.Start();
Assert.Equal(1, changes.Count);
fixture.Child.IsOnlyOneWord = "Bar";
sched.Start();
Assert.Equal(2, changes.Count);
fixture.Child = new TestFixture
{
IsOnlyOneWord = "Bar"
};
sched.Start();
Assert.Equal(2, changes.Count);
});
}
public void WhenAnySmokeTest()
{
new TestScheduler().With(
sched =>
{
var fixture = new HostTestFixture
{
Child = new TestFixture()
};
fixture.SomeOtherParam = 5;
fixture.Child.IsNotNullString = "Foo";
var output1 = new List <IObservedChange <HostTestFixture, int> >();
var output2 = new List <IObservedChange <HostTestFixture, string> >();
fixture.WhenAny(
x => x.SomeOtherParam,
x => x.Child.IsNotNullString,
(sop, nns) => new
{
sop,
nns
}).Subscribe(
x =>
{
output1.Add(x.sop);
output2.Add(x.nns);
});
sched.Start();
Assert.Equal(1, output1.Count);
Assert.Equal(1, output2.Count);
Assert.Equal(fixture, output1[0].Sender);
Assert.Equal(fixture, output2[0].Sender);
Assert.Equal(5, output1[0].Value);
Assert.Equal("Foo", output2[0].Value);
fixture.SomeOtherParam = 10;
sched.Start();
Assert.Equal(2, output1.Count);
Assert.Equal(2, output2.Count);
Assert.Equal(fixture, output1[1].Sender);
Assert.Equal(fixture, output2[1].Sender);
Assert.Equal(10, output1[1].Value);
Assert.Equal("Foo", output2[1].Value);
fixture.Child.IsNotNullString = "Bar";
sched.Start();
Assert.Equal(3, output1.Count);
Assert.Equal(3, output2.Count);
Assert.Equal(fixture, output1[2].Sender);
Assert.Equal(fixture, output2[2].Sender);
Assert.Equal(10, output1[2].Value);
Assert.Equal("Bar", output2[2].Value);
});
}
public void SubscriptionToWhenAnyShouldReturnCurrentValue()
{
var obj = new HostTestFixture();
var observedValue = 1;
obj.WhenAnyValue(x => x.SomeOtherParam).Subscribe(x => observedValue = x);
obj.SomeOtherParam = 42;
Assert.True(observedValue == obj.SomeOtherParam);
}
public void GetValueShouldReturnTheValueFromAPath()
{
var input = new HostTestFixture
{
Child = new TestFixture {
IsNotNullString = "Foo"
},
};
Expression <Func <HostTestFixture, string> > expression = x => x.Child.IsNotNullString;
var fixture = new ObservedChange <HostTestFixture, string>(input, expression.Body);
Assert.Equal("Foo", fixture.GetValue());
}
public void SetValuePathSmokeTest()
{
var output = new HostTestFixture
{
Child = new TestFixture {
IsNotNullString = "Foo"
},
};
Expression <Func <TestFixture, string> > expression = x => x.IsOnlyOneWord;
var fixture = new ObservedChange <TestFixture, string>(new TestFixture {
IsOnlyOneWord = "Bar"
}, expression.Body);
fixture.SetValueToProperty(output, x => x.Child.IsNotNullString);
Assert.Equal("Bar", output.Child.IsNotNullString);
}
public void OFPReplacingTheHostShouldResubscribeTheObservable()
{
new TestScheduler().With(sched =>
{
var fixture = new HostTestFixture
{
Child = new TestFixture()
};
fixture.ObservableForProperty(x => x.Child.IsOnlyOneWord)
.ToObservableChangeSet(ImmediateScheduler.Instance)
.Bind(out var changes)
.Subscribe();
fixture.Child.IsOnlyOneWord = "Foo";
sched.Start();
Assert.Equal(1, changes.Count);
fixture.Child.IsOnlyOneWord = "Bar";
sched.Start();
Assert.Equal(2, changes.Count);
// Tricky! This is a change too, because from the perspective
// of the binding, we've went from "Bar" to null
fixture.Child = new TestFixture();
sched.Start();
Assert.Equal(3, changes.Count);
// Here we've set the value but it shouldn't change
fixture.Child.IsOnlyOneWord = null;
sched.Start();
Assert.Equal(3, changes.Count);
fixture.Child.IsOnlyOneWord = "Baz";
sched.Start();
Assert.Equal(4, changes.Count);
fixture.Child.IsOnlyOneWord = "Baz";
sched.Start();
Assert.Equal(4, changes.Count);
Assert.True(changes.All(x => x.Sender == fixture));
Assert.True(changes.All(x => x.GetPropertyName() == "Child.IsOnlyOneWord"));
changes.Select(x => x.Value).AssertAreEqual(new[] { "Foo", "Bar", null, "Baz" });
});
}
public void DisposingDisconnectsTheBindTo()
{
new TestScheduler().With(sched =>
{
var input = new ScheduledSubject <string>(sched);
var fixture = new HostTestFixture {
Child = new TestFixture()
};
var subscription = input.BindTo(fixture, x => x.Child.IsNotNullString);
Assert.Null(fixture.Child.IsNotNullString);
input.OnNext("Foo");
sched.Start();
Assert.Equal("Foo", fixture.Child.IsNotNullString);
subscription.Dispose();
input.OnNext("Bar");
sched.Start();
Assert.Equal("Foo", fixture.Child.IsNotNullString);
});
}