เพียงแค่ติดตั้ง expectedObjects จาก Nuget คุณสามารถเปรียบเทียบค่าคุณสมบัติของวัตถุสองอย่างได้อย่างง่ายดายค่าวัตถุแต่ละชิ้นของคอลเลกชันค่าของวัตถุที่ประกอบด้วยสองค่าและค่าคุณสมบัติเปรียบเทียบบางส่วนตามประเภทที่ไม่ระบุชื่อ
ฉันมีตัวอย่างใน github: https://github.com/hatelove/CompareObjectEquals
นี่คือตัวอย่างบางส่วนที่มีสถานการณ์เปรียบเทียบวัตถุ:
[TestMethod]
public void Test_Person_Equals_with_ExpectedObjects()
{
//use extension method ToExpectedObject() from using ExpectedObjects namespace to project Person to ExpectedObject
var expected = new Person
{
Id = 1,
Name = "A",
Age = 10,
}.ToExpectedObject();
var actual = new Person
{
Id = 1,
Name = "A",
Age = 10,
};
//use ShouldEqual to compare expected and actual instance, if they are not equal, it will throw a System.Exception and its message includes what properties were not match our expectation.
expected.ShouldEqual(actual);
}
[TestMethod]
public void Test_PersonCollection_Equals_with_ExpectedObjects()
{
//collection just invoke extension method: ToExpectedObject() to project Collection<Person> to ExpectedObject too
var expected = new List<Person>
{
new Person { Id=1, Name="A",Age=10},
new Person { Id=2, Name="B",Age=20},
new Person { Id=3, Name="C",Age=30},
}.ToExpectedObject();
var actual = new List<Person>
{
new Person { Id=1, Name="A",Age=10},
new Person { Id=2, Name="B",Age=20},
new Person { Id=3, Name="C",Age=30},
};
expected.ShouldEqual(actual);
}
[TestMethod]
public void Test_ComposedPerson_Equals_with_ExpectedObjects()
{
//ExpectedObject will compare each value of property recursively, so composed type also simply compare equals.
var expected = new Person
{
Id = 1,
Name = "A",
Age = 10,
Order = new Order { Id = 91, Price = 910 },
}.ToExpectedObject();
var actual = new Person
{
Id = 1,
Name = "A",
Age = 10,
Order = new Order { Id = 91, Price = 910 },
};
expected.ShouldEqual(actual);
}
[TestMethod]
public void Test_PartialCompare_Person_Equals_with_ExpectedObjects()
{
//when partial comparing, you need to use anonymous type too. Because only anonymous type can dynamic define only a few properties should be assign.
var expected = new
{
Id = 1,
Age = 10,
Order = new { Id = 91 }, // composed type should be used anonymous type too, only compare properties. If you trace ExpectedObjects's source code, you will find it invoke config.IgnoreType() first.
}.ToExpectedObject();
var actual = new Person
{
Id = 1,
Name = "B",
Age = 10,
Order = new Order { Id = 91, Price = 910 },
};
// partial comparing use ShouldMatch(), rather than ShouldEqual()
expected.ShouldMatch(actual);
}
อ้างอิง:
- Github ที่คาดไว้
- บทนำของ expectedObjects