public void GetChanges_list_withIgnored()
{
var oldState = new ListVictim
{
List = new List <int> {
11, 22
}
};
var newState = new ListVictim
{
List = new List <int> {
33, 44
}
};
worker.FindDifferences
(
oldState,
newState,
stateChanges,
5,
(field, context) => false,
(prop, context) => context.BreadcrumbAsString.Equals("List[0]")
);
Assert.Single(stateChanges.Changes);
Assert.Equal(22, stateChanges.Changes[0].OldValue);
Assert.Equal(44, stateChanges.Changes[0].NewValue);
}
public void List_OnProperty_isCalled_forEachElement_but_doesNotRecurse_simple_types()
{
var victim = new ListVictim {
PropIntList = new List <int> {
11, 22
}
};
var type = victim.GetType();
var callCounts = new Dictionary <string, int>
{
{ ".Root", 0 },
{ "PropIntList[0]", 0 },
{ "PropIntList[1]", 0 }
};
// the calls for the list field and each of its elements
A.CallTo(() =>
listener.OnProperty(GetProp(type, "PropIntList"), A <Func <object> > ._, A <InstanceTraversalContext> ._))
.Invokes(x =>
{
var ctx = (InstanceTraversalContext)x.Arguments[2];
if (ctx.CurrentDepth == 0)
{
callCounts[".Root"]++;
return;
}
// for the individual elements
Assert.Equal(1, ctx.CurrentDepth);
callCounts[ctx.BreadcrumbAsString]++;
})
.Returns(new SimpleInstanceListenerOnFieldOrPropResult {
DoContinueRecursion = true
});
Traverser.TraverseInstance(victim, 5, listener);
A.CallTo(() => listener.OnField(
A <FieldInfo> .That.Not.Matches(x => x == GetField(type, "FieldList")),
A <Func <object> > ._,
A <IReadOnlyInstanceTraversalContext> ._)
).MustNotHaveHappened();
// all "methods" should have been called exactly once
foreach (var(key, value) in callCounts)
{
// this sillyness provides us with a hint for which thing was not called as expected
Assert.Equal($"{key}=1", $"{key}={value}");
}
}
public void List_OnProperty_isNotCalled_forEachElement_becauseOnPropertyReturnsFalse()
{
var victim = new ListVictim {
PropIntList = new List <int> {
11, 22
}
};
var type = victim.GetType();
var callCounts = new Dictionary <string, int>
{
{ ".Root", 0 },
{ "PropIntList[0]", 0 },
{ "PropIntList[1]", 0 }
};
// the calls for the list field and each of its elements
A.CallTo(() => listener.OnProperty(GetProp(type, "PropIntList"), A <Func <object> > ._, A <InstanceTraversalContext> ._))
.Invokes(x =>
{
var ctx = (InstanceTraversalContext)x.Arguments[2];
if (ctx.CurrentDepth == 0)
{
callCounts[".Root"]++;
return;
}
// for the individual elements
Assert.Equal(1, ctx.CurrentDepth);
callCounts[ctx.BreadcrumbAsString]++;
})
.Returns(new SimpleInstanceListenerOnFieldOrPropResult {
DoContinueRecursion = false
}); // do not traverse further down this path
Traverser.TraverseInstance(victim, 5, listener);
A.CallTo(() => listener.OnField(
A <FieldInfo> .That.Not.Matches(x => x == GetField(type, "FieldList")),
A <Func <object> > ._,
A <IReadOnlyInstanceTraversalContext> ._)
).MustNotHaveHappened();
Assert.Equal(1, callCounts[".Root"]);
Assert.Equal(0, callCounts["PropIntList[0]"]);
Assert.Equal(0, callCounts["PropIntList[1]"]);
}
public void GetChanges_list()
{
var oldState = new ListVictim
{
List = new List <int> {
11, 22
}
};
var newState = new ListVictim
{
List = new List <int> {
33, 44
}
};
worker.FindDifferences(oldState, newState, stateChanges, 5);
Assert.Equal(2, stateChanges.Changes.Count);
}
public void List_OnProperty_isCalled_forEachElement_andRecurses()
{
var one = new InnocentBystander();
var two = new InnocentBystander();
var three = new InnocentBystander();
var victim = new ListVictim {
PropList = new List <InnocentBystander> {
one, two, three
}
};
var type = victim.GetType();
var complexType = typeof(InnocentBystander);
var callCounts = new Dictionary <string, int>
{
{ ".Root", 0 },
{ "PropList[0]", 0 },
{ "PropList[0].FieldString", 0 },
{ "PropList[1]", 0 },
{ "PropList[1].FieldString", 0 },
{ "PropList[2]", 0 },
{ "PropList[2].FieldString", 0 }
};
// the calls for the list field and each of its elements
A.CallTo(() => listener.OnProperty(GetProp(type, "PropList"), A <Func <object> > ._, A <InstanceTraversalContext> ._))
.Invokes(x =>
{
var ctx = (InstanceTraversalContext)x.Arguments[2];
if (ctx.CurrentDepth == 0)
{
callCounts[".Root"]++;
return;
}
// for the individual elements
Assert.Equal(1, ctx.CurrentDepth);
callCounts[ctx.BreadcrumbAsString]++;
});
// the calls for the recursion of each list element
A.CallTo(() => listener.OnField(GetField(complexType, "FieldString"), A <Func <object> > ._, A <InstanceTraversalContext> ._))
.Invokes(x =>
{
var ctx = (InstanceTraversalContext)x.Arguments[2];
Assert.Equal(1, ctx.CurrentDepth);
callCounts[$"{ctx.BreadcrumbAsString}.FieldString"]++;
});
Traverser.TraverseInstance(victim, 5, listener);
// all "methods" should have been called exactly once
foreach (var(key, value) in callCounts)
{
// this sillyness provides us with a hint for which thing was not called as expected
Assert.Equal($"{key}=1", $"{key}={value}");
}
}
public void List_OnField_isNotCalled_forEachElement_becauseOnFieldReturnsFalse()
{
var one = new InnocentBystander();
var two = new InnocentBystander();
var three = new InnocentBystander();
var victim = new ListVictim {
FieldList = new List <InnocentBystander> {
one, two, three
}
};
var type = victim.GetType();
var complexType = typeof(InnocentBystander);
var callCounts = new Dictionary <string, int>
{
{ ".Root", 0 },
{ "FieldList[0]", 0 },
{ "FieldList[0].FieldString", 0 },
{ "FieldList[1]", 0 },
{ "FieldList[1].FieldString", 0 },
{ "FieldList[2]", 0 },
{ "FieldList[2].FieldString", 0 }
};
// the calls for the list field and each of its elements
A.CallTo(() => listener.OnField(GetField(type, "FieldList"), A <Func <object> > ._, A <InstanceTraversalContext> ._))
.Invokes(x =>
{
var ctx = (InstanceTraversalContext)x.Arguments[2];
if (ctx.CurrentDepth == 0)
{
callCounts[".Root"]++;
return;
}
// for the individual elements
Assert.Equal(1, ctx.CurrentDepth);
callCounts[ctx.BreadcrumbAsString]++;
})
.Returns(new SimpleInstanceListenerOnFieldOrPropResult {
DoContinueRecursion = false
}); // do not traverse further down this path
// the calls for the recursion of each list element
A.CallTo(() => listener.OnField(GetField(complexType, "FieldString"), A <Func <object> > ._, A <InstanceTraversalContext> ._))
.Invokes(x =>
{
var ctx = (InstanceTraversalContext)x.Arguments[2];
Assert.Equal(1, ctx.CurrentDepth);
callCounts[$"{ctx.BreadcrumbAsString}.FieldString"]++;
})
.Returns(new SimpleInstanceListenerOnFieldOrPropResult {
DoContinueRecursion = true
});
Traverser.TraverseInstance(victim, 5, listener);
Assert.Equal(1, callCounts[".Root"]);
Assert.Equal(0, callCounts["FieldList[0]"]);
Assert.Equal(0, callCounts["FieldList[0].FieldString"]);
Assert.Equal(0, callCounts["FieldList[1]"]);
Assert.Equal(0, callCounts["FieldList[1].FieldString"]);
Assert.Equal(0, callCounts["FieldList[2]"]);
Assert.Equal(0, callCounts["FieldList[2].FieldString"]);
}
