public void GenerateAndApplyReversePatch()
{
var initial = new PhoneBook()
{
Entries = new Dictionary <string, TestPerson>()
{
["0800JOHNDOE"] = new TestPerson()
{
FirstName = "John",
LastName = "Doe",
IsAdult = true,
},
["0800JANEDOE"] = new TestPerson()
{
FirstName = "Jane",
LastName = "Doe",
IsAdult = true,
},
},
};
using DraftScope scope = (DraftScope)DraftExtensions.CreateDraft(initial, out PhoneBook draft);
var patchGenerator = new DictionaryPatchGenerator();
var patches = new JsonPatchDocument();
var inversePatches = new JsonPatchDocument();
draft.Entries.Remove("0800JANEDOE");
draft.Entries.Add("0800BABYDOE", new TestPerson()
{
FirstName = "Baby",
LastName = "Doe",
});
// trick the scope into thinking that is finishing and should not create proxies anymore.
scope.IsFinishing = true;
patchGenerator.Generate((IDraft)draft.Entries, "/Entries", patches, inversePatches);
// inverse order of inverse patches.
inversePatches.Operations.Reverse();
var final = scope.FinishDraft <PhoneBook, IPhoneBook>(draft);
var result = IPhoneBook.Produce(initial, p =>
{
patches.ApplyTo(p);
});
result = result.Produce(p =>
{
inversePatches.ApplyTo(p);
});
Assert.Equal(2, result.Entries.Count);
Assert.Same(initial.Entries["0800JOHNDOE"], result.Entries["0800JOHNDOE"]);
Assert.Same(initial.Entries["0800JANEDOE"], result.Entries["0800JANEDOE"]);
}
public void ApplyInverseComplexCollectionPatch()
{
var initial = new TestPerson()
{
FirstName = "John",
LastName = "Doe",
IsAdult = true,
Cars = new List <Car>()
{
new Car
{
Make = "Ferrari",
Model = "250 LM",
},
new Car
{
Make = "Shelby",
Model = "Daytona Cobra Coupe",
},
new Car()
{
Make = "Rolls Royce",
Model = "10 HP",
},
new Car()
{
Make = "Mercedes-Benz",
Model = "38/250 SSK",
},
},
};
var patches = new JsonPatchDocument();
var inversePatches = new JsonPatchDocument();
ITestPerson testPerson;
using (DraftScope scope = (DraftScope)DraftExtensions.CreateDraft(initial, out TestPerson draft))
{
var patchGenerator = new CollectionPatchGenerator(new DynamicLargestCommonSubsequence());
draft.Cars.RemoveAt(3);
draft.Cars.RemoveAt(0);
draft.Cars.Add(new Car()
{
Make = "Bugatti",
Model = "Type 57 SC Atalante",
});
// trick the scope into thinking that is finishing and should not create proxies anymore.
scope.IsFinishing = true;
patchGenerator.Generate((IDraft)draft.Cars, "/Cars", patches, inversePatches);
// inverse order of inverse patches.
inversePatches.Operations.Reverse();
testPerson = scope.FinishDraft <ITestPerson, TestPerson>(draft);
}
var result = ITestPerson.Produce(initial, p =>
{
patches.ApplyTo(p);
});
result = result.Produce(p =>
{
inversePatches.ApplyTo(p);
});
Assert.Equal(4, result.Cars.Count);
Assert.Equal("Ferrari", result.Cars[0].Make);
Assert.Equal("250 LM", result.Cars[0].Model);
Assert.Equal("Shelby", result.Cars[1].Make);
Assert.Equal("Daytona Cobra Coupe", result.Cars[1].Model);
Assert.Equal("Rolls Royce", result.Cars[2].Make);
Assert.Equal("10 HP", result.Cars[2].Model);
Assert.Equal("Mercedes-Benz", result.Cars[3].Make);
Assert.Equal("38/250 SSK", result.Cars[3].Model);
}