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 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);
});
}
