CODEWITHSUNDEEP
c#unit-testingnmock-2.1
Ashok kumar
Ashok kumar

Reputation: 1611

Unit Test Method for File Size more than 40MB

My DTO is declared like below

    [MaxLength(maxFileSize, ErrorMessage = "Max Byte Array length is 40MB.")]
    public byte[] DocumentFile { get; set; }

I need to write Unit Test method for File Size more than 40MB.

As the DocumentFile property is declared as byte[] array type, I am unable to assign any value to DocumentFile property.

Can anyone please suggest me how can I write unit test method for this scenario.

Upvotes: 0

Views: 1478

Answers (2)

h__
h__

Reputation: 793

Something like

[TestMethod]
[ExpectedException(typeof(BlaBlaException), "Exceptiion string")]
public void DocumentFile_set_WhenDocumentFileSetOver40Mb_ShouldThrowExceptionBlaBla {
   DocumentFile = new byte [45000000];
}

Upvotes: 1

Cee McSharpface
Cee McSharpface

Reputation: 8725

Neither compiler nor runtime have a problem with a 40MB+1 byte array:

namespace so42248850
{
    class Program
    {
        class someClass
        {
            /* [attributes...] */
            public byte[] DocumentFile;
        }

        static void Main(string[] args)
        {
            var oversized = new byte[41943041]; /* 40 MB plus the last straw */
            try
            {
                var mock = new someClass
                {
                    DocumentFile = oversized
                };
            } 
            catch(Exception e)
            {
                /* is this the expected exception > test passes/fails */
            }
        }
    }
}

I would not recommend such an approach for a massively multi-user scenario in production, as it may cause quite some memory pressure, but for an automated test it should be ok.

Upvotes: 3

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