[R] R-3.4.2: make check stops at line 698 of tests/reg-tests-1d.R

Wed Nov 1 21:52:16 CET 2017

Dear Duncan,

thank you very much, that is it! Indeed, there was activated in my
internet router the "telekom navigation help". When I am (or the system
is) looking for an not existent url, this "help" opens its own website.
After deactivation of telekom navigation help, the normal message
(server not found) comes. I never gave attention to this "help",
although it is bothering sometimes; now it is switched off in my
residence. However, in Germany this problem probably frequently arises,
therefor, it should be considered in the respective code for testing R
after compilation.  

All the best,
Albrecht
-- 
  Albrecht Kauffmann
  alkauffm at fastmail.fm

Am Mi, 1. Nov 2017, um 19:24, schrieb Duncan Murdoch:
> 
> On 01/11/2017 1:08 PM, Albrecht Kauffmann wrote:
> > Am Mi, 1. Nov 2017, um 17:40, schrieb Duncan Murdoch:
> >> On 01/11/2017 12:02 PM, Albrecht Kauffmann wrote:
> >>> Dear Duncan,
> >>>
> >>> Many thanks!
> >>>
> >>> Am Mi, 1. Nov 2017, um 16:17, schrieb Duncan Murdoch:
> >>>> On 01/11/2017 8:11 AM, Albrecht Kauffmann wrote:
> >>>>> Hi all,
> >>>>>
> >>>>> after compiling R-3.4.2 on opensuse leap 42.3, make check failed. Until
> >>>>> R-3.4.1 I never had a problem with these tests. No, the programm stops
> >>>>> at the following line of tests/reg-tests-1d.R:
> >>>>>
> >>>>>> ## available.packages() (not) caching in case of errors
> >>>>>> tools::assertWarning(ap1 <- available.packages(repos = "http://foo.bar"))
> >>>>>> tools::assertWarning(ap2 <- available.packages(repos = "http://foo.bar"))
> >>>>>        error in assertCondition(expr, "warning",
> >>>>>       .exprString = d.expr) :  Got simpleError evaluating of ap2 <-
> >>>>>       available.packages(repo  ...: wanted warning
> >>>>>
> >>>>> The error message is a result of:      ap2 <- available.packages(repos =
> >>>>> "http://foo.bar"),
> >>>>> not of the following condition in the test script:   stopifnot(nrow(ap1)
> >>>>> == 0, identical(ap1, ap2))  .
> >>>>
> >>>> What error message did you see?
> >>>
> >>> after: R --vanilla <../R-3.4.2/tests/reg-tests-1d.R
> >>
> >> Sorry, I wasn't clear.  I meant to ask what error message you get if you
> >> run the command that's supposed to generate a warning, i.e. run the code
> >>
> > Oops! Here are the resulting error messages, which are not the same:
> >> ap1 <- available.packages(repos = "http://foo.bar")
> > Warning: Cannot access to the index of the repository
> > http://foo.bar/src/contrib:
> >    line beginning with '<!DOCTYPE html PUBLI ...' is incorrect formatted
> > 
> >> ap2 <- available.packages(repos = "http://foo.bar")
> > Error in readRDS(dest) : unknown input format
> > 
> > On my other PC, the same lines give 2 times the same error message:
> > "Warning: Cannot access to the index of the repository
> > http://foo.bar/src/contrib: Cannot open URL
> > 'http://foo.bar/src/contrib/PACKAGES' "
> > 
> > Indeed, the second error message on the present PC is different. What
> > may be the cause?
> 
> It looks as though one of your PCs is returning a file in response to 
> the request, rather than signalling that the URL is not found.
> 
> If you go into a browser like Firefox and try to open the URL
> 
> http://foo.bar/src/contrib/PACKAGES
> 
> what do you see on the two systems?  I get a message from Firefox that 
> the server is not found.
> 
> Some ISPs respond to requests for nonexistent URLs with a message, 
> basically an ad for something or other.  Maybe that's what you're
> getting.
> 
> In any case, this looks like a bug in R:  the first request failed, but 
> something got cached, and then the second request got an error reading 
> the cached value.
> 
> Duncan Murdoch