public async Task NoDiagnostics_ChainOf3()
{
var hostPropertyTypeInfo = new EmptyClassBuilder()
.WithClassName("ClassName")
.WithNamespace("Namespace1")
.WithClassAccess(Accessibility.Public);
var hostTypeInfo = WhenChangedHostBuilder.Changing()
.WithClassName("ClassName")
.WithNamespace("Namespace2")
.WithInvocation(InvocationKind.MemberAccess, x => x.Child.Child.Value)
.WithClassAccess(Accessibility.Public)
.WithPropertyType(hostPropertyTypeInfo)
.WithPropertyAccess(Accessibility.Public);
var fixture = await WhenChangedFixture.Create(hostTypeInfo, x => TestContext.WriteLine(x), ("HostProperty.cs", hostPropertyTypeInfo.BuildRoot())).ConfigureAwait(false);
fixture.RunGenerator(out var compilationDiagnostics, out var generatorDiagnostics);
generatorDiagnostics.Where(x => x.Severity >= DiagnosticSeverity.Warning).Should().BeEmpty();
compilationDiagnostics.Where(x => x.Severity >= DiagnosticSeverity.Warning).Should().BeEmpty();
var host = fixture.NewHostInstance();
host.Child = fixture.NewHostInstance();
host.Child.Child = fixture.NewHostInstance();
host.Child.Child.Value = fixture.NewValuePropertyInstance();
var observable = host.GetWhenChangedObservable(_ => TestContext.WriteLine(fixture.Sources));
object emittedValue = null;
observable.Subscribe(x => emittedValue = x);
var initialValue = host.Child.Child.Value;
emittedValue.Should().Be(initialValue);
var previousValue = emittedValue;
// According to the current design, no emission should occur when the chain is "broken".
host.Child = null;
emittedValue.Should().Be(previousValue);
previousValue = emittedValue;
host.Child = fixture.NewHostInstance();
host.Child.Child = fixture.NewHostInstance();
emittedValue.Should().Be(previousValue);
previousValue = emittedValue;
host.Child.Child.Value = fixture.NewValuePropertyInstance();
emittedValue.Should().Be(previousValue);
previousValue = emittedValue;
host.Child.Child.Value = null;
emittedValue.Should().Be(previousValue);
}
public async Task NoDiagnostics_PrivateHostPropertyTypeAndInternalOutputType()
{
var hostPropertyTypeInfo = new EmptyClassBuilder()
.WithClassAccess(Accessibility.Private);
var customType = new EmptyClassBuilder()
.WithClassName("Output")
.WithClassAccess(Accessibility.Internal);
var hostTypeInfo = WhenChangedHostBuilder.Changing()
.WithClassName("HostClass")
.WithInvocation(InvocationKind.MemberAccess, x => x.Child, x => x.Value, "(a, b) => b != null ? new HostContainer.Output() : null")
.WithClassAccess(Accessibility.Protected)
.AddNestedClass(hostPropertyTypeInfo)
.WithPropertyType(hostPropertyTypeInfo)
.WithPropertyAccess(Accessibility.Private);
var hostContainerTypeInfo = new EmptyClassBuilder()
.WithClassName("HostContainer")
.WithClassAccess(Accessibility.Public)
.AddNestedClass(hostTypeInfo)
.AddNestedClass(customType);
var fixture = await WhenChangedFixture.Create(hostTypeInfo, x => TestContext.WriteLine(x)).ConfigureAwait(false);
fixture.RunGenerator(out var compilationDiagnostics, out var generatorDiagnostics);
generatorDiagnostics.Where(x => x.Severity >= DiagnosticSeverity.Warning).Should().BeEmpty();
compilationDiagnostics.Where(x => x.Severity >= DiagnosticSeverity.Warning).Should().BeEmpty();
var host = fixture.NewHostInstance();
host.Value = fixture.NewValuePropertyInstance();
var observable = host.GetWhenChangedObservable(_ => TestContext.WriteLine(fixture.Sources));
object emittedValue = null;
observable.Subscribe(x => emittedValue = x);
// TODO: Better series of checks. Currently can't compare values because of reference
// equality and we don't have access to the instance that the conversionFunc creates.
emittedValue.Should().NotBeNull();
host.Value = null;
emittedValue.Should().NotBeNull();
host.Value = fixture.NewValuePropertyInstance();
emittedValue.Should().BeNull();
}
public async Task NoDiagnostics_InstanceReceiverKind(InvocationKind invocationKind)
{
var receiverPropertyTypeInfo = new EmptyClassBuilder()
.WithClassAccess(Accessibility.Public);
var externalReceiverTypeInfo = new WhenChangedHostBuilder()
.WithClassName("ReactiveType")
.WithClassAccess(Accessibility.Public)
.WithPropertyType(receiverPropertyTypeInfo)
.WithPropertyAccess(Accessibility.Public)
.WithInvocation("null");
var hostTypeInfo = new WhenChangedHostBuilder()
.WithClassName("HostClass")
.WithClassAccess(Accessibility.Public)
.WithInvocation(invocationKind, x => x.Value, externalReceiverTypeInfo);
var fixture = await WhenChangedFixture.Create(hostTypeInfo, externalReceiverTypeInfo, x => TestContext.WriteLine(x), ("ReceiverPropertyTypeInfo.cs", receiverPropertyTypeInfo.BuildRoot())).ConfigureAwait(false);
fixture.RunGenerator(out var compilationDiagnostics, out var generatorDiagnostics);
generatorDiagnostics.Where(x => x.Severity >= DiagnosticSeverity.Warning).Should().BeEmpty();
compilationDiagnostics.Where(x => x.Severity >= DiagnosticSeverity.Warning).Should().BeEmpty();
var host = fixture.NewHostInstance();
var receiver = fixture.NewReceiverInstance();
host.Receiver = receiver;
receiver.Value = fixture.NewValuePropertyInstance();
var observable = host.GetWhenChangedObservable(_ => TestContext.WriteLine(fixture.Sources));
object value = null;
observable.Subscribe(x => value = x);
receiver.Value.Should().Equals(value);
receiver.Value = fixture.NewValuePropertyInstance();
receiver.Value.Should().Equals(value);
receiver.Value = null;
receiver.Value.Should().Equals(value);
}
private async Task AssertTestCase_SingleExpression(WhenChangedHostBuilder hostTypeInfo, BaseUserSourceBuilder hostPropertyTypeInfo, bool typesHaveSameRoot)
{
hostTypeInfo.WithInvocation(InvocationKind.MemberAccess, x => x.Value);
var propertyTypeSource = typesHaveSameRoot ? string.Empty : hostPropertyTypeInfo.BuildRoot();
var fixture = await WhenChangedFixture.Create(hostTypeInfo, x => TestContext.WriteLine(x), ("PropertyTypeSource.cs", propertyTypeSource)).ConfigureAwait(false);
fixture.RunGenerator(out var compilationDiagnostics, out var generatorDiagnostics);
generatorDiagnostics.Where(x => x.Severity >= DiagnosticSeverity.Warning).Should().BeEmpty();
compilationDiagnostics.Where(x => x.Severity >= DiagnosticSeverity.Warning).Should().BeEmpty();
var host = fixture.NewHostInstance();
host.Value = fixture.NewValuePropertyInstance();
var observable = host.GetWhenChangedObservable(_ => TestContext.WriteLine(fixture.Sources));
object value = null;
observable.Subscribe(x => value = x);
host.Value.Should().Be(value);
host.Value = fixture.NewValuePropertyInstance();
host.Value.Should().Be(value);
host.Value = null;
host.Value.Should().Be(value);
}
