public void ChangingShouldAlwaysArriveBeforeChanged()
{
string before_set = "Foo";
string after_set = "Bar";
#if IOS
Assert.Fail("This crashes Mono in a quite spectacular way");
#endif
var fixture = new TestFixture() { IsOnlyOneWord = before_set };
bool before_fired = false;
fixture.Changing.Subscribe(x => {
// XXX: The content of these asserts don't actually get
// propagated back, it only prevents before_fired from
// being set - we have to enable 1st-chance exceptions
// to see the real error
Assert.Equal("IsOnlyOneWord", x.PropertyName);
Assert.Equal(fixture.IsOnlyOneWord, before_set);
before_fired = true;
});
bool after_fired = false;
fixture.Changed.Subscribe(x => {
Assert.Equal("IsOnlyOneWord", x.PropertyName);
Assert.Equal(fixture.IsOnlyOneWord, after_set);
after_fired = true;
});
fixture.IsOnlyOneWord = after_set;
Assert.True(before_fired);
Assert.True(after_fired);
}
public void AutoPersistHelperSavesOnInterval()
{
(new TestScheduler()).With(sched => {
var fixture = new TestFixture();
var manualSave = new Subject<Unit>();
int timesSaved = 0;
fixture.AutoPersist(x => { timesSaved++; return Observable.Return(Unit.Default); }, manualSave, TimeSpan.FromMilliseconds(100));
// No changes = no saving
sched.AdvanceByMs(2 * 100);
Assert.Equal(0, timesSaved);
// Change = one save
fixture.IsNotNullString = "Foo";
sched.AdvanceByMs(2 * 100);
Assert.Equal(1, timesSaved);
// Two fast changes = one save
fixture.IsNotNullString = "Foo";
fixture.IsNotNullString = "Bar";
sched.AdvanceByMs(2 * 100);
Assert.Equal(2, timesSaved);
// Trigger save twice = one save
manualSave.OnNext(Unit.Default);
manualSave.OnNext(Unit.Default);
sched.AdvanceByMs(2 * 100);
Assert.Equal(3, timesSaved);
});
}
public void MakeObjectReactiveHelperSmokeTest()
{
var fixture = new NonReactiveINPCObjectMadeReactive();
var output = fixture.Changed.CreateCollection();
Assert.Equal(0, output.Count);
var input = new TestFixture();
fixture.InpcProperty = input;
Assert.Equal(1, output.Count);
Assert.Equal(fixture, output[0].Sender);
Assert.Equal("InpcProperty", output[0].PropertyName);
}
public void DataContextDoesNotLeakTest()
{
ListBox listBox = new ListBox();
TestFixture vm = new TestFixture();
listBox.DataContext = vm;
WeakReference listBoxRef = new WeakReference(listBox);
GC.Collect();
Assert.True(listBoxRef.IsAlive);
//remove ref
listBox = null;
GC.Collect();
Assert.False(listBoxRef.IsAlive);
}
public void RaiseAndSetUsingExpression()
{
#if IOS
Assert.Fail("This crashes Mono in a quite spectacular way");
#endif
var fixture = new TestFixture() { IsNotNullString = "Foo", IsOnlyOneWord = "Baz" };
var output = new List<string>();
fixture.Changed.Subscribe(x => output.Add(x.PropertyName));
fixture.UsesExprRaiseSet = "Foo";
fixture.UsesExprRaiseSet = "Foo"; // This one shouldn't raise a change notification
Assert.Equal("Foo", fixture.UsesExprRaiseSet);
Assert.Equal(1, output.Count);
Assert.Equal("UsesExprRaiseSet", output[0]);
}
public void AutoPersistHelperShouldntTriggerOnNonPersistableProperties()
{
(new TestScheduler()).With(sched => {
var fixture = new TestFixture();
var manualSave = new Subject<Unit>();
int timesSaved = 0;
fixture.AutoPersist(x => { timesSaved++; return Observable.Return(Unit.Default); }, manualSave, TimeSpan.FromMilliseconds(100));
// No changes = no saving
sched.AdvanceByMs(2 * 100);
Assert.Equal(0, timesSaved);
// Change to not serialized = no saving
fixture.NotSerialized = "Foo";
sched.AdvanceByMs(2 * 100);
Assert.Equal(0, timesSaved);
});
}
public void BindToStackOverFlowTest()
{
// Before the code changes packed in the same commit
// as this test the test would go into an infinite
// event storm. The critical issue is that the
// property StackOverflowTrigger will clone the
// value before setting it.
//
// If this test executes through without hanging then
// the problem has been fixed.
(new TestScheduler()).With(sched => {
var fixturea = new TestFixture();
var fixtureb = new TestFixture();
var source = new BehaviorSubject<List<string>>(new List<string>());
source.BindTo(fixturea, x => x.StackOverflowTrigger);
});
}
public void GetValueShouldActuallyReturnTheValue()
{
var input = new[] {"Foo", "Bar", "Baz"};
var output = new List<string>();
(new TestScheduler()).With(sched => {
var fixture = new TestFixture();
// ...whereas ObservableForProperty *is* guaranteed to.
fixture.ObservableForProperty(x => x.IsOnlyOneWord).Subscribe(x => {
output.Add(x.GetValue());
});
foreach (var v in input) { fixture.IsOnlyOneWord = v; }
sched.AdvanceToMs(1000);
input.AssertAreEqual(output);
});
}
public void ReactiveObjectSmokeTest()
{
var output_changing = new List<string>();
var output = new List<string>();
var fixture = new TestFixture();
fixture.Changing.Subscribe(x => output_changing.Add(x.PropertyName));
fixture.Changed.Subscribe(x => output.Add(x.PropertyName));
fixture.IsNotNullString = "Foo Bar Baz";
fixture.IsOnlyOneWord = "Foo";
fixture.IsOnlyOneWord = "Bar";
fixture.IsNotNullString = null; // Sorry.
fixture.IsNotNullString = null;
var results = new[] { "IsNotNullString", "IsOnlyOneWord", "IsOnlyOneWord", "IsNotNullString" };
Assert.Equal(results.Length, output.Count);
output.AssertAreEqual(output_changing);
results.AssertAreEqual(output);
}
public void ObservableForPropertyUsingExpression()
{
var fixture = new TestFixture() { IsNotNullString = "Foo", IsOnlyOneWord = "Baz" };
var output = new List<IObservedChange<TestFixture, string>>();
fixture.ObservableForProperty(x => x.IsNotNullString).Subscribe(x => {
output.Add(x);
});
fixture.IsNotNullString = "Bar";
fixture.IsNotNullString = "Baz";
fixture.IsNotNullString = "Baz";
fixture.IsOnlyOneWord = "Bamf";
Assert.Equal(2, output.Count);
Assert.Equal(fixture, output[0].Sender);
Assert.Equal("IsNotNullString", output[0].PropertyName);
Assert.Equal("Bar", output[0].Value);
Assert.Equal(fixture, output[1].Sender);
Assert.Equal("IsNotNullString", output[1].PropertyName);
Assert.Equal("Baz", output[1].Value);
}
public void AutoPersistCollectionDisconnectsOnDispose()
{
new TestScheduler().With(sched =>
{
var manualSave = new Subject <Unit>();
var item = new TestFixture();
var fixture = new ObservableCollectionExtended <TestFixture> {
item
};
var timesSaved = 0;
var disp = fixture.AutoPersistCollection(
_ =>
{
timesSaved++;
return(Observables.Unit);
},
manualSave,
TimeSpan.FromMilliseconds(100));
sched.AdvanceByMs(2 * 100);
Assert.Equal(0, timesSaved);
// By being added to collection, AutoPersist is enabled for item
item.IsNotNullString = "Foo";
sched.AdvanceByMs(2 * 100);
Assert.Equal(1, timesSaved);
// Dispose = no save
disp.Dispose();
// Removed from collection = no save
fixture.Clear();
sched.AdvanceByMs(2 * 100);
Assert.Equal(1, timesSaved);
// Item isn't in the collection, it doesn't get persisted anymore
item.IsNotNullString = "Bar";
sched.AdvanceByMs(2 * 100);
Assert.Equal(1, timesSaved);
// Added back item + dispose = no save
fixture.Add(item);
sched.AdvanceByMs(100); // Compensate for scheduling
item.IsNotNullString = "Baz";
sched.AdvanceByMs(2 * 100);
Assert.Equal(1, timesSaved);
// Even if we issue a reset, no save
fixture.SuspendNotifications().Dispose(); // Will trigger a reset.
sched.AdvanceByMs(100); // Compensate for scheduling
item.IsNotNullString = "Bamf";
sched.AdvanceByMs(2 * 100);
Assert.Equal(1, timesSaved);
// Remove by hand = no save
fixture.RemoveAt(0);
item.IsNotNullString = "Blomf";
sched.AdvanceByMs(2 * 100);
Assert.Equal(1, timesSaved);
});
}
public void ValueTest()
{
var input = new[] {"Foo", "Bar", "Baz"};
IEnumerable<string> output = null;
IEnumerable<string> output2 = null;
(new TestScheduler()).With(sched => {
var fixture = new TestFixture();
// Same deal as above
output = fixture.Changed.Value<object, object, string>().CreateCollection();
output2 = fixture.ObservableForProperty(x => x.IsOnlyOneWord).Value().CreateCollection();
foreach (var v in input) { fixture.IsOnlyOneWord = v; }
sched.AdvanceToMs(1000);
input.AssertAreEqual(output);
input.AssertAreEqual(output2);
});
}
public void GetValueShouldActuallyReturnTheValue()
{
var input = new[] {"Foo", "Bar", "Baz"};
var output = new List<string>();
var output2 = new List<string>();
(new TestScheduler()).With(sched => {
var fixture = new TestFixture();
// Two cases: Changed is guaranteed to *not* set ObservedChange.Value
fixture.Changed.Subscribe(x => {
output.Add((string) x.GetValue());
});
// ...whereas ObservableForProperty *is* guaranteed to.
fixture.ObservableForProperty(x => x.IsOnlyOneWord).Subscribe(x => {
output2.Add(x.GetValue());
});
foreach (var v in input) { fixture.IsOnlyOneWord = v; }
sched.RunToMilliseconds(1000);
input.AssertAreEqual(output);
input.AssertAreEqual(output2);
});
}
public void WhenAnyShouldWorkEvenWithNormalProperties()
{
var fixture = new TestFixture() { IsNotNullString = "Foo", IsOnlyOneWord = "Baz", PocoProperty = "Bamf" };
var output = new List<IObservedChange<TestFixture, string>>();
fixture.WhenAny(x => x.PocoProperty, x => x).Subscribe(output.Add);
Assert.Equal(1, output.Count);
Assert.Equal(fixture, output[0].Sender);
Assert.Equal("PocoProperty", output[0].PropertyName);
Assert.Equal("Bamf", output[0].Value);
}
public void OFPSimplePropertyTest()
{
(new TestScheduler()).With(sched => {
var fixture = new TestFixture();
var changes = fixture.ObservableForProperty(x => x.IsOnlyOneWord).CreateCollection();
fixture.IsOnlyOneWord = "Foo";
sched.Start();
Assert.Equal(1, changes.Count);
fixture.IsOnlyOneWord = "Bar";
sched.Start();
Assert.Equal(2, changes.Count);
fixture.IsOnlyOneWord = "Baz";
sched.Start();
Assert.Equal(3, changes.Count);
fixture.IsOnlyOneWord = "Baz";
sched.Start();
Assert.Equal(3, changes.Count);
Assert.True(changes.All(x => x.Sender == fixture));
Assert.True(changes.All(x => x.PropertyName == "IsOnlyOneWord"));
changes.Select(x => x.Value).AssertAreEqual(new[] {"Foo", "Bar", "Baz"});
});
}
public void DeferringNotificationsDontShowUpUntilUndeferred()
{
var fixture = new TestFixture();
var output = fixture.Changed.CreateCollection();
Assert.Equal(0, output.Count);
fixture.NullableInt = 4;
Assert.Equal(1, output.Count);
var stopDelaying = fixture.DelayChangeNotifications();
fixture.NullableInt = 5;
Assert.Equal(1, output.Count);
fixture.IsNotNullString = "Bar";
Assert.Equal(1, output.Count);
fixture.NullableInt = 6;
Assert.Equal(1, output.Count);
fixture.IsNotNullString = "Baz";
Assert.Equal(1, output.Count);
var stopDelayingMore = fixture.DelayChangeNotifications();
fixture.IsNotNullString = "Bamf";
Assert.Equal(1, output.Count);
stopDelaying.Dispose();
fixture.IsNotNullString = "Blargh";
Assert.Equal(1, output.Count);
// NB: Because we debounce queued up notifications, we should only
// see a notification from the latest NullableInt and the latest
// IsNotNullableString
stopDelayingMore.Dispose();
Assert.Equal(3, output.Count);
}
public void ExceptionsThrownInSubscribersShouldMarshalToThrownExceptions()
{
var fixture = new TestFixture() { IsOnlyOneWord = "Foo" };
fixture.Changed.Subscribe(x => { throw new Exception("Die!"); });
var exceptionList = fixture.ThrownExceptions.CreateCollection();
fixture.IsOnlyOneWord = "Bar";
Assert.Equal(1, exceptionList.Count);
}
public void ReactiveObjectShouldntSerializeAnythingExtra()
{
var fixture = new TestFixture() { IsNotNullString = "Foo", IsOnlyOneWord = "Baz" };
string json = JSONHelper.Serialize(fixture);
// Should look something like:
// {"IsNotNullString":"Foo","IsOnlyOneWord":"Baz","NullableInt":null,"PocoProperty":null,"StackOverflowTrigger":null,"TestCollection":[],"UsesExprRaiseSet":null}
Assert.True(json.Count(x => x == ',') == 6);
Assert.True(json.Count(x => x == ':') == 7);
Assert.True(json.Count(x => x == '"') == 18);
}
public void ReactiveObjectShouldntSerializeAnythingExtra()
{
var fixture = new TestFixture() { IsNotNullString = "Foo", IsOnlyOneWord = "Baz" };
string json = JSONHelper.Serialize(fixture);
this.Log().Info(json);
// Should look something like:
// {"TestCollection":[],"_IsNotNullString":"Foo","_IsOnlyOneWord":"Baz","_PocoProperty":null,"_UsesExprRaiseSet":null}
Assert.True(json.Count(x => x == ',') == 4);
Assert.True(json.Count(x => x == ':') == 5);
Assert.True(json.Count(x => x == '"') == 14);
}
public void AutoPersistCollectionDisconnectsOnDispose()
{
(new TestScheduler()).With(sched => {
var manualSave = new Subject<Unit>();
var item = new TestFixture();
var fixture = new ReactiveList<TestFixture> { item };
int timesSaved = 0;
var disp = fixture.AutoPersistCollection(x => { timesSaved++; return Observable.Return(Unit.Default); }, manualSave, TimeSpan.FromMilliseconds(100));
sched.AdvanceByMs(2 * 100);
Assert.Equal(0, timesSaved);
// By being added to collection, AutoPersist is enabled for item
item.IsNotNullString = "Foo";
sched.AdvanceByMs(2 * 100);
Assert.Equal(1, timesSaved);
// Dispose = no save
disp.Dispose();
// Removed from collection = no save
fixture.Clear();
sched.AdvanceByMs(2 * 100);
Assert.Equal(1, timesSaved);
// Item isn't in the collection, it doesn't get persisted anymore
item.IsNotNullString = "Bar";
sched.AdvanceByMs(2 * 100);
Assert.Equal(1, timesSaved);
// Added back item + dispose = no save
fixture.Add(item);
sched.AdvanceByMs(100); // Compensate for scheduling
item.IsNotNullString = "Baz";
sched.AdvanceByMs(2 * 100);
Assert.Equal(1, timesSaved);
// Even if we issue a reset, no save
fixture.Reset();
sched.AdvanceByMs(100); // Compensate for scheduling
item.IsNotNullString = "Bamf";
sched.AdvanceByMs(2 * 100);
Assert.Equal(1, timesSaved);
// Remove by hand = no save
fixture.RemoveAt(0);
item.IsNotNullString = "Blomf";
sched.AdvanceByMs(2 * 100);
Assert.Equal(1, timesSaved);
});
}
public void SubscriptionExceptionsShouldntPermakillReactiveObject()
{
Assert.True(false, "This test doesn't work yet");
var fixture = new TestFixture();
int i = 0;
fixture.Changed.Subscribe(x => {
if (++i == 2)
throw new Exception("Deaded!");
});
fixture.IsNotNullString = "Foo";
fixture.IsNotNullString = "Bar";
fixture.IsNotNullString = "Baz";
fixture.IsNotNullString = "Bamf";
var output = new List<string>();
fixture.Changed.Subscribe(x => output.Add(x.PropertyName));
fixture.IsOnlyOneWord = "Bar";
Assert.Equal("IsOnlyOneWord", output[0]);
Assert.Equal(1, output.Count);
}