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Merged
bonk-dev merged 1 commit into from
Jul 8, 2026
Merged

test: Add cases for calculating CRC32 for struct fields #23

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71 changes: 69 additions & 2 deletions HarpoS7.Tests/Integrity/HarpoCrc32Tests.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -9,9 +9,76 @@ public void TestCrc32String()
{
string text = "Tag_12";
var crc = new HarpoCrc32();

crc.Update(text);

Assert.That(crc.Result, Is.EqualTo(0x0CDF926DU));
}
}

[Test]
[TestCase("TestStruct", "TestSInt", Typecode.SInt, 0xC0069460U)]
[TestCase("TestStruct", "TestBool", Typecode.Bool, 0xED3879EFU)]
[TestCase("TestStruct", "TestUSInt", Typecode.USInt, 0x23AA4F7AU)]
[TestCase("TestStruct", "TestWord", Typecode.Word, 0x90E66202U)]
[TestCase("TestStruct", "TestInt", Typecode.Int, 0x69083814U)]
[TestCase("TestStruct", "TestUInt", Typecode.UInt, 0xA36B6156U)]
[TestCase("TestStruct", "TestDWord", Typecode.DWord, 0x9D833E43U)]
[TestCase("TestStruct", "TestDInt", Typecode.DInt, 0x90D51BAAU)]
[TestCase("TestStruct", "TestUDInt", Typecode.UDInt, 0xC5AA9276U)]
[TestCase("TestStruct", "TestReal", Typecode.Real, 0x28EF064DU)]
[TestCase("TestStruct", "TestLInt", Typecode.LInt, 0x91DAEA45U)]
[TestCase("TestStruct", "TestULInt", Typecode.ULInt, 0x7276315FU)]
[TestCase("TestStruct", "TestLReal", Typecode.LReal, 0x3F809E29U)]
public void TestCrc32V2_StructFields(string structName, string fieldName, Typecode typecode, uint expectedCrc)
{
// Struct parent
// Name + StructTypeCode(0x11)
var structCrc = new HarpoCrc32();
structCrc.Update(structName + '\x11');

var finalCrc = new HarpoCrc32();
finalCrc.UpdateWith(structCrc.Result);
finalCrc.UpdateWith(0x89); // Parent.Child delimiter

var itemCrc = new HarpoCrc32();
itemCrc.Update(fieldName); // Child name
itemCrc.UpdateWith((byte)typecode);

finalCrc.UpdateWith(itemCrc.Result);
Assert.That(finalCrc.Result, Is.EqualTo(expectedCrc));
}

// scope: S71500; target: Default
// TypesafeCRCProviderr; Siemens.Automation.DomainServices
public enum Typecode : byte
{
Bool = 0x01,
Byte = 0x02,
Char = 0x03,
Word = 0x04,
Int = 0x05,
DWord = 0x06,
DInt = 0x07,
Real = 0x08,
Date = 0x09,
TimeOfDay = 0x0A,
Time = 0x0B,
S5Time = 0x0C,
DateAndTime = 0x0E,
Array = 0x10,
Struct = 0x11,
String = 0x13,
LReal = 0x30,
ULInt = 0x31,
LInt = 0x32,
LWord = 0x33,
USInt = 0x34,
UInt = 0x35,
UDInt = 0x36,
SInt = 0x37,
WChar = 0x3D,
WString = 0x3E,
LTime = 0x40,
LTimeOfDay = 0x41
}
}
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