R Under development (unstable) (2025-05-11 r88197 ucrt) -- "Unsuffered Consequences"
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> library(testthat)
> library(HLMdiag)

Attaching package: 'HLMdiag'

The following object is masked from 'package:stats':

    covratio

> library(lme4)
Loading required package: Matrix
> library(nlme)

Attaching package: 'nlme'

The following object is masked from 'package:lme4':

    lmList

> 
> data(sleepstudy, package = 'lme4')
> 
> sleepstudy2 <- sleepstudy
> sleepstudy2[7,1] <- NA
> sleepstudy2[2,2] <- NA
> 
> 
> test_check("HLMdiag")
[ FAIL 0 | WARN 0 | SKIP 6 | PASS 424 ]

══ Skipped tests (6) ═══════════════════════════════════════════════════════════
• On CRAN (6): 'test-hlm_influence.R:32:3', 'test-hlm_influence.R:56:3',
  'test-hlm_resid.R:90:3', 'test-hlm_resid.R:111:3',
  'test-influence_functions.R:158:3', 'test-influence_functions.R:172:3'

[ FAIL 0 | WARN 0 | SKIP 6 | PASS 424 ]
> 
> proc.time()
   user  system elapsed 
  55.82    3.28   59.12