public void OFPChangingTheHostPropertyShouldFireAChildChangeNotificationOnlyIfThePreviousChildIsDifferent()
{
(new TestScheduler()).With(sched => {
var fixture = new HostTestFixture()
{
Child = new TestFixture()
};
var changes = fixture.ObservableForProperty(x => x.Child.IsOnlyOneWord).CreateCollection();
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 OFPReplacingTheHostWithNullThenSettingItBackShouldResubscribeTheObservable()
{
(new TestScheduler()).With(sched => {
var fixture = new HostTestFixture()
{
Child = new TestFixture()
};
var changes = fixture.ObservableForProperty(x => x.Child.IsOnlyOneWord).CreateCollection();
fixture.Child.IsOnlyOneWord = "Foo";
sched.Start();
Assert.Equal(1, changes.Count);
fixture.Child.IsOnlyOneWord = "Bar";
sched.Start();
Assert.Equal(2, changes.Count);
// Oops, now the child is Null, we may now blow up
fixture.Child = null;
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);
Assert.True(changes.All(x => x.Sender == fixture));
Assert.True(changes.All(x => x.PropertyName == "Child.IsOnlyOneWord"));
changes.Select(x => x.Value).AssertAreEqual(new[] { "Foo", "Bar", null });
});
}
public void OFPSimpleChildPropertyTest()
{
(new TestScheduler()).With(sched => {
var fixture = new HostTestFixture()
{
Child = new TestFixture()
};
var changes = fixture.ObservableForProperty(x => x.Child.IsOnlyOneWord).CreateCollection();
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.PropertyName == "Child.IsOnlyOneWord"));
changes.Select(x => x.Value).AssertAreEqual(new[] { "Foo", "Bar", "Baz" });
});
}
public void SubscriptionToWhenAnyShouldReturnCurrentValue()
{
var obj = new HostTestFixture();
int observedValue = 1;
obj.WhenAny(x => x.SomeOtherParam, x => x.Value)
.Subscribe(x => observedValue = x);
obj.SomeOtherParam = 42;
Assert.True(observedValue == obj.SomeOtherParam);
}
public void RaisePropertyChangedTest()
{
var fixture = new HostTestFixture();
string propChanged = null;
fixture.PropertyChanged += (o, e) => propChanged = e.PropertyName;
fixture.SomeParam = "Foo";
Assert.AreEqual("SomeParam", propChanged);
fixture.SomeOtherParam = 4;
Assert.AreEqual("SomeOtherParam", propChanged);
}
public void FromPropertyTest()
{
var input = new[] { 1, 2, 3 };
var fixture = new HostTestFixture();
IList<IObservedChange<HostTestFixture, int>> result = null;
fixture.FromProperty(x => x.SomeOtherParam)
.Take(input.Length)
.ToList()
.Subscribe(x => result = x);
foreach (var v in input) { fixture.SomeOtherParam = v; }
Assert.IsNotNull(result);
Assert.AreEqual(input.Length, result.Count);
foreach (var v in input.Zip(result.Select(x => x.Value), (expected, actual) => new { expected, actual })) {
Assert.AreEqual(v.expected, v.actual);
}
}
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 FromPropertyTest()
{
var input = new[] { 1, 2, 3 };
var fixture = new HostTestFixture();
IList <IObservedChange <HostTestFixture, int> > result = null;
fixture.FromProperty(x => x.SomeOtherParam)
.Take(input.Length)
.ToList()
.Subscribe(x => result = x);
foreach (var v in input)
{
fixture.SomeOtherParam = v;
}
Assert.IsNotNull(result);
Assert.AreEqual(input.Length, result.Count);
foreach (var v in input.Zip(result.Select(x => x.Value), (expected, actual) => new { expected, actual }))
{
Assert.AreEqual(v.expected, v.actual);
}
}
public void RaisePropertyChangedTest()
{
var fixture = new HostTestFixture();
string propChanged = null;
fixture.PropertyChanged += (o, e) => propChanged = e.PropertyName;
fixture.SomeParam = "Foo";
Assert.AreEqual("SomeParam", propChanged);
fixture.SomeOtherParam = 4;
Assert.AreEqual("SomeOtherParam", propChanged);
}
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();
int observedValue = 1;
obj.WhenAny(x => x.SomeOtherParam, x => x.Value)
.Subscribe(x => observedValue = x);
obj.SomeOtherParam = 42;
Assert.True(observedValue == obj.SomeOtherParam);
}
public void OFPSimpleChildPropertyTest()
{
(new TestScheduler()).With(sched => {
var fixture = new HostTestFixture() {Child = new TestFixture()};
var changes = fixture.ObservableForProperty(x => x.Child.IsOnlyOneWord).CreateCollection();
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.PropertyName == "Child.IsOnlyOneWord"));
changes.Select(x => x.Value).AssertAreEqual(new[] {"Foo", "Bar", "Baz"});
});
}
public void OFPReplacingTheHostWithNullThenSettingItBackShouldResubscribeTheObservable()
{
(new TestScheduler()).With(sched => {
var fixture = new HostTestFixture() {Child = new TestFixture()};
var changes = fixture.ObservableForProperty(x => x.Child.IsOnlyOneWord).CreateCollection();
fixture.Child.IsOnlyOneWord = "Foo";
sched.Start();
Assert.Equal(1, changes.Count);
fixture.Child.IsOnlyOneWord = "Bar";
sched.Start();
Assert.Equal(2, changes.Count);
// Oops, now the child is Null, we may now blow up
fixture.Child = null;
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);
Assert.True(changes.All(x => x.Sender == fixture));
Assert.True(changes.All(x => x.PropertyName == "Child.IsOnlyOneWord"));
changes.Select(x => x.Value).AssertAreEqual(new[] {"Foo", "Bar", null});
});
}
public void OFPChangingTheHostPropertyShouldFireAChildChangeNotificationOnlyIfThePreviousChildIsDifferent()
{
(new TestScheduler()).With(sched => {
var fixture = new HostTestFixture() {Child = new TestFixture()};
var changes = fixture.ObservableForProperty(x => x.Child.IsOnlyOneWord).CreateCollection();
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);
});
}
