[TestMethod]

[DataRow("","DefaultID")]

[DataRow(null,"DefaultID")]

[DataRow("1234","1234")]

public void Update_For_CampId(string? campId,string expectedCampId)

{

    var transaction=new Transaction()

    {

        CampaignId="DefaultID",

        Status="DefaultStatus"

    };

    var argument = new Transaction.CreateArguments();

    argument.CampaignId=campId;

    argument.Status="SomeStatus";

    var response = Transaction.Update(transaction, argument);

    Assert.AreEqual(expectedCampId,response.CampaignId);

    Assert.AreEqual(expectedStatus,response.Status);

}

[TestMethod]

[DataRow("","DefaultStatus")]

[DataRow(null,"DefaultStatus")]

[DataRow("OK","OK")]

public void Update_For_Status(string? status, string expectedStatus)

{

    var transaction=new Transaction()

    {

        CampaignId="DefaultID",

        Status="DefaultStatus"

    };

    var argument = new Transaction.CreateArguments();

    argument.CampaignId="SomeID";

    argument.Status=status;

    var response = Transaction.Update(transaction, argument);

    Assert.AreEqual(expectedCampId,response.CampaignId);

    Assert.AreEqual(expectedStatus,response.Status);

}