Crash on Re-Run

[brodieG]

> library(unitizer)
> unitize('val')

Possible matching files from "tests/unitizer":
  1: validate.args.R
  2: validate.R
unitizer> 2
Selected file: validate.R
+------------------------------------------------------------------------------+
| unitizer for: unitizer/validate.R                                            |
+------------------------------------------------------------------------------+

                       Pass Fail  New
          Tokens Pass    22    -    -
          Tokens Fail    30    -    -
 Compound Expressions     9    -    -
   Other Return Modes     3    -    -
     Multi-line Stuff     5    -    -
             Language     -    -    4
.....................................
                         69    -    4

= Language =====================================================================

- New --------------------------------------------------------------------------

| The 4 tests in this section are new. Add tests to store ([Y]es, [N]o, [P]rev, 
| [B]rowse, [R]erun, [Q]uit, [H]elp)?

> validate(quote(quote(a + b)), quote(x2 + x3))
Error in validate(quote(quote(a + b)), quote(x2 + x3)) : 
  `quote(x2 + x3)[[1]]` should be a call to `quote` (is a call to `+`)

unitizer> validate(quote(a + b), quote(x2 + x3))
[1] TRUE
unitizer> N

> x <- quote(quote(a + b))
> validate(x, quote(x2 + x3))
[1] TRUE

unitizer> R

| Toggling re-run mode ON for this unitizer

= Finalize Unitizer ============================================================

| You have 3 unreviewed tests; press `B` to browse tests, `U` to go to first 
| unreviewed test.

| You made no changes to the unitizer so there is no need to update it.  While 
| unnecessary, you can force an update by typing O at the prompt.

| Re-run unitizer ([Y]es, [P]rev, [B]rowse, [U]nreviewed, [R]erun, f[O]rce)?

unitizer> Y

| unitizer unchanged.

Error in !all.equal(`attributes<-`(tests.parsed.prev[[i]], NULL), `attributes<-`(tests.parsed[[i]],  : 
  invalid argument type
| Unexpectedly exited before storing unitizer; tests were not saved or changed.

[brodieG]

Hmm, can't seem to reproduce anymore...

Okay, I did reproduce it, but can't do so consistently.