time.Time type value passed to Call.Return differs from value returned

[steven-eckhoff]

time.Time type value passed to Call.Return differs from value returned by the mocked interface.

I would expect the time.Time value passed to Call.Return to match exactly to the value returned by the mocked interface.

To Reproduce Steps to reproduce the behavior

1. run mockgen on source file
2. write test and do something like

   transactionDate := time.Now()
   fmt.Printf("Value passed to Call.Return(): %#v\n", transactionDate)
   deps.clock.EXPECT().Now().Return(transactionDate)

3. Then on the next EXPECT call use the same transactionDate
4. set up test with new controller and mocked interface and run
5. Get an Unexpected call to error with the following

   Got: {0 9.99 3 11 credit 2 3735928559 2999-01-02 00:00:00 +0000 UTC bob goto eleven 42 2021-07-05 15:19:49.711001449 -0500 CDT m=+0.013888202} (SomeType)
       Want: is equal to {0 9.99 3 11 credit 2 3735928559 2999-01-02 00:00:00 +0000 UTC bob goto eleven 42 2021-07-05 15:19:49.710931843 -0500 CDT m=+0.013818600} (SomeType)

Also when I put in some prints I get this

Value passed to Call.Return(): time.Time{wall:0xc030f8396a5ff583, ext:13818600, loc:(*time.Location)(0x1b0fc20)}
Value returned from mocked interface: time.Time{wall:0xc030f8396a610569, ext:13888202, loc:(*time.Location)(0x1b0fc20)}

Additional Information

• gomock mode (reflect or source): source
• gomock version or git ref: v1.5.1-0.20210325190955-9336b7eccec0
• golang version: 1.16

Triage Notes for the Maintainers