How to initialise a jagged array of bytes as a class member - arrays

Question

I'm trying to find an alternative way to solve the problem I'm stuck on here. I'm using MSTest to select one of a set of arrays of bytes to pass to a function under test.
I'm trying this approach as I haven't been able to get MSTest working directly passing an array of bytes to the test function.
I want to set up a Private ReadOnly jagged array of arrays of Bytes (TestMsgs) as part of my test class to allow the test subroutine to access elements one by one. Currently I'm getting error BC30201 "Expression Expected" as below. Something is missing in my initialisation, but I can't find any example on how to initialise this jagged array.
Public Class DecoderTests
Private ReadOnly TestMsgs As Byte()() = New Byte(2)() {
New Byte() {&HA1, &HB2, &HC3}, 'Test array should Pass
New Byte() {&HA2, &HB3}, 'Test array should Fail
} <========= Error BC30201 Here
Private DecoderInstance
Here is the full code of my test (Simplified to debug the original issue)
Test Class
Imports System.Text
Imports Microsoft.VisualStudio.TestTools.UnitTesting
Namespace TestDecoder.Tests
<TestClass>
Public Class DecoderTests
Private ReadOnly TestMsgs As Byte()() = New Byte(2)() {
New Byte() {&HA1, &HB2, &HC3}, 'Test array should Pass
New Byte() {&HA2, &HB3}, 'Test array should Fail
}
Private DecoderInstance
<DataTestMethod>
<DataRow(0)>
<DataRow(1)>
Public Sub ParseTestData(message_number)
Dim result As Boolean
DecoderInstance = New Decoder()
result = DecoderInstance.parse(TestMsgs(message_number)(0))
Assert.IsTrue(result, "Failed the dummy test")
End Sub
End Class
End Namespace
Simplified Class under test:
Imports Microsoft.VisualBasic
Public Class Decoder
Function parse(rxchar As Byte) As Boolean
Return rxchar = &H41
End Function
End Class

Answer 1

I just tried this code and there were no errors:
Private ReadOnly TestMsgs As Byte()() = {
New Byte() {&HA1, &HB2, &HC3},
New Byte() {&HA2, &HB3}
}
I think the issue with your original code was that you were specifying the size of the array explicitly and also initialising it, therefore specifying the size of the array implicitly. I just tested this code and it worked too:
Private ReadOnly TestMsgs As Byte()() = New Byte()() {
New Byte() {&HA1, &HB2, &HC3},
New Byte() {&HA2, &HB3}
}