Re: Having difficulties using Is.EquivelentTo() toocompare two collections

The way CollectionEquivalentConstraint works is as follows:
1) The expected objects are put into a hashtabe, using the
objects themseves as keys and with the values being the
number of occurences of each object.
2) The actual collection objects are applied to the same
hashtable, decrementing the counts.
3) The assertion succeeds if all the objects in the hash
table reach zero.

For this to work, your objects must override Equals() and 
GetHashCode(). Have you done that?

Charlie

> -----Original Message-----
> From: [email protected] 
> [mailto:[email protected]] On Behalf 
> Of Ryan Andrus
> Sent: Thursday, August 07, 2008 10:14 AM
> To: [email protected]
> Subject: [Nunit-users] Having difficulties using 
> Is.EquivelentTo() toocompare two collections
> 
> Hi,
> 
> I'm having difficulties using Is.EquivelentTo() too compare 
> two collections.
> My collections are the same which I've manually verified from 
> the output of the Assert but the Assert is throwing an 
> exception stating that they are not the same. I'm comparing 
> two list of PeltonMessages and I've set a break point in the 
> Equals method for the various types of pelton messages in my 
> test and the break point is never hit so I'm a bit confused 
> about how this comparison is done. Can someone please explain 
> how the comparison is done so that I can determine if we need 
> to update our business objects? Or please review my code and 
> let me know if I'm just using this constraint wrong?
> 
> Code
> ---------------------------------------------------------------
>       [Test]
>       //[Ignore("Under developement")]
>       public void MergeSendParamsRequests_NoMatches()
>       {
>          // Old singler request
>          Ion.LisdCore.SourceControllers.PeltonRequestType 
> oldRequestType 
>             = 
> Ion.LisdCore.SourceControllers.PeltonRequestType.SendParams;
>          PeltonRequestPriority oldPriority = 
> PeltonRequestPriority.High;
>          List<PeltonMessage> oldMessages = new List<PeltonMessage>();
>          SourceControllerNumber oldSrcId = (SourceControllerNumber)2;
>          CommandSentNotification oldCallback = new 
> CommandSentNotification(On_CommandSentNotification);
>          oldMessages.Add(new VibratorIdPeltonMessage());
>          oldMessages.Add(new SweepStartPeltonMessage());
>          oldMessages.Add(new SweepAbortPeltonMessage());
>          oldMessages.Add(new EndPeltonMessage());
> 
>          // New single request
>          Ion.LisdCore.SourceControllers.PeltonRequestType 
> newRequestType 
>             = 
> Ion.LisdCore.SourceControllers.PeltonRequestType.SendParams;
>          PeltonRequestPriority newPriority = 
> PeltonRequestPriority.High;
>          List<PeltonMessage> newMessages = new List<PeltonMessage>();
>          SourceControllerNumber newSrcId = (SourceControllerNumber)2;
>          CommandSentNotification newCallback = new 
> CommandSentNotification(On_CommandSentNotification);
>          newMessages.Add(new VibratorIdPeltonMessage());
>          newMessages.Add(new HelloPeltonMessage());
>          newMessages.Add(new StartCodePeltonMessage());
>          newMessages.Add(new EndPeltonMessage());
> 
>          // Expected SingleRequest.Messages
>          List<PeltonMessage> expectedMessages = new 
> List<PeltonMessage>();
>          expectedMessages.Add(new VibratorIdPeltonMessage());
>          expectedMessages.Add(new SweepStartPeltonMessage());
>          expectedMessages.Add(new SweepAbortPeltonMessage());
>          expectedMessages.Add(new HelloPeltonMessage());
>          expectedMessages.Add(new StartCodePeltonMessage());
>          expectedMessages.Add(new EndPeltonMessage());
>          
>          SingleRequest oldSingleRequest = new 
> SingleRequest(oldRequestType, oldPriority, 
>                                                    
> oldMessages, oldSrcId, null, null, null, oldCallback);
>          SingleRequest newSingleRequest = new 
> SingleRequest(newRequestType, newPriority, 
>                                                    
> newMessages, newSrcId, null, null, null, newCallback);
> 
>          SingleRequest.MergeSendParamsRequests(oldSingleRequest,
> newSingleRequest);
> 
>          Assert.That(oldSingleRequest.messages,
> Is.EquivalentTo(expectedMessages), 
>                         "oldSingleRequest.messages didn't 
> match the expected values.");
>       }
> 
> Error Messsage
> ---------------------------------------------------------------
> ------ Test started: Assembly: SourceControllerTests.dll ------
> 
> TestCase
> 'SourceControllerTests.CollisionManagementBaseTests.MergeSendP
> aramsRequests_
> NoMatches'
> failed: 
>   oldSingleRequest.messages didn't match the expected values.
>   Expected: equivalent to < <   MsgId =32
>    Name =VibratorIdPeltonMessage
>    Port =0
>    Startchar =163
>    MsgId =32
>    AddrOffset =0
>    SendOverSecondaryChannel =False
>    CrewNumber =0
>    Radio =False
>    MsgCount =2
>    Vibrators =4294967295
> >, <   MsgId =11
>    Name =SweepStartPeltonMessage
>    Port =0
>    Startchar =163
>    MsgId =11
>    AddrOffset =0
>    SendOverSecondaryChannel =False
>    filler0 =S
>    filler1 =W
>    filler2 =E
>    filler3 =E
>    filler4 =P
>    filler5 =S
>    filler6 =T
>    filler7 =A
>    filler8 =R
>    filler9 =T
> >, <   MsgId =12
>    Name =SweepAbortPeltonMessage
>    Port =0
>    Startchar =163
>    MsgId =12
>    AddrOffset =0
>    SendOverSecondaryChannel =False
>    filler0 =A
>    filler1 =B
>    filler2 =O
>    filler3 =R
>    filler4 =T
>    filler5 =S
>    filler6 =W
>    filler7 =E
>    filler8 =E
>    filler9 =P
> >, <   MsgId =8
>    Name =HelloPeltonMessage
>    Port =0
>    Startchar =163
>    MsgId =8
>    AddrOffset =0
>    SendOverSecondaryChannel =False
>    EncoderNumber =0
>    UnitSerial =0
>    DSP =
>    MCU =
>    OperatingMode =0
>    ModemInfo =
>    ModemSerial =0
>    ModemSetup =0
>    ModemPSS =0
> >, <   MsgId =10
>    Name =StartCodePeltonMessage
>    Port =0
>    Startchar =163
>    MsgId =10
>    AddrOffset =0
>    SendOverSecondaryChannel =False
>    FleetNumber =0
>    CrewNumber =0
>    EncoderMode =Normal
>    DelayedPSS =False
>    DecoderSweepLen =0
>    SweepID =0
>    SweepNumber =0
>    StoredSweep =False
>    LowForce =False
>    StartCodeNumber =0
>    DecodersEnabled =0
>    VibSimilarity =0
>    EP =0
>    ShotID =0
>    Line =0
>    Station =0
>    LastSweepIndex =0
>    LastEnabledDecoders =0
>    NextSweepNumber =0
>    RetransmitMissedPss =False
>    RetransmitSweepIndex =0
>    RetransmitDecoders =0
>    SweepProfileNumber =1
>    ZeroWaitPSS =True
>    ExtraByte =False
> >, <   MsgId =1
>    Name =EndPeltonMessage
>    Port =0
>    Startchar =163
>    MsgId =1
>    AddrOffset =0
>    SendOverSecondaryChannel =False
> > >
>   But was:  < <   MsgId =32
>    Name =VibratorIdPeltonMessage
>    Port =0
>    Startchar =163
>    MsgId =32
>    AddrOffset =0
>    SendOverSecondaryChannel =False
>    CrewNumber =0
>    Radio =False
>    MsgCount =2
>    Vibrators =4294967295
> >, <   MsgId =11
>    Name =SweepStartPeltonMessage
>    Port =0
>    Startchar =163
>    MsgId =11
>    AddrOffset =0
>    SendOverSecondaryChannel =False
>    filler0 =S
>    filler1 =W
>    filler2 =E
>    filler3 =E
>    filler4 =P
>    filler5 =S
>    filler6 =T
>    filler7 =A
>    filler8 =R
>    filler9 =T
> >, <   MsgId =12
>    Name =SweepAbortPeltonMessage
>    Port =0
>    Startchar =163
>    MsgId =12
>    AddrOffset =0
>    SendOverSecondaryChannel =False
>    filler0 =A
>    filler1 =B
>    filler2 =O
>    filler3 =R
>    filler4 =T
>    filler5 =S
>    filler6 =W
>    filler7 =E
>    filler8 =E
>    filler9 =P
> >, <   MsgId =8
>    Name =HelloPeltonMessage
>    Port =0
>    Startchar =163
>    MsgId =8
>    AddrOffset =0
>    SendOverSecondaryChannel =False
>    EncoderNumber =0
>    UnitSerial =0
>    DSP =
>    MCU =
>    OperatingMode =0
>    ModemInfo =
>    ModemSerial =0
>    ModemSetup =0
>    ModemPSS =0
> >, <   MsgId =10
>    Name =StartCodePeltonMessage
>    Port =0
>    Startchar =163
>    MsgId =10
>    AddrOffset =0
>    SendOverSecondaryChannel =False
>    FleetNumber =0
>    CrewNumber =0
>    EncoderMode =Normal
>    DelayedPSS =False
>    DecoderSweepLen =0
>    SweepID =0
>    SweepNumber =0
>    StoredSweep =False
>    LowForce =False
>    StartCodeNumber =0
>    DecodersEnabled =0
>    VibSimilarity =0
>    EP =0
>    ShotID =0
>    Line =0
>    Station =0
>    LastSweepIndex =0
>    LastEnabledDecoders =0
>    NextSweepNumber =0
>    RetransmitMissedPss =False
>    RetransmitSweepIndex =0
>    RetransmitDecoders =0
>    SweepProfileNumber =1
>    ZeroWaitPSS =True
>    ExtraByte =False
> >, <   MsgId =1
>    Name =EndPeltonMessage
>    Port =0
>    Startchar =163
>    MsgId =1
>    AddrOffset =0
>    SendOverSecondaryChannel =False
> > >
> 	
> C:\code\Firefly\Trunk_CollisionManagementTesting\CSC\Common.NE
> T\SourceContro
> llerTests\CollisionManagementBaseTests.cs(78,0): at 
> SourceControllerTests.CollisionManagementBaseTests.MergeSendPa
> ramsRequests_N
> oMatches()
> 
> 
> 0 passed, 1 failed, 0 skipped, took 6.08 seconds.
> 
> 
> 
> 
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