R Under development (unstable) (2023-09-26 r85226 ucrt) -- "Unsuffered Consequences"
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> library(testthat)
> library(Seurat)
The legacy packages maptools, rgdal, and rgeos, underpinning the sp package,
which was just loaded, will retire in October 2023.
Please refer to R-spatial evolution reports for details, especially
https://r-spatial.org/r/2023/05/15/evolution4.html.
It may be desirable to make the sf package available;
package maintainers should consider adding sf to Suggests:.
The sp package is now running under evolution status 2
     (status 2 uses the sf package in place of rgdal)
Attaching SeuratObject
> 
> test_check("Seurat")

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[ FAIL 0 | WARN 0 | SKIP 19 | PASS 650 ]

══ Skipped tests (19) ══════════════════════════════════════════════════════════
• On CRAN (19): 'test_integratedata.R:99:3', 'test_integration.R:68:3',
  'test_integration.R:99:3', 'test_integration.R:130:3',
  'test_integration.R:164:3', 'test_integration.R:196:3',
  'test_integration.R:228:3', 'test_integration.R:258:3',
  'test_integration.R:300:3', 'test_integration.R:329:3',
  'test_integration.R:359:3', 'test_objects.R:349:3', 'test_read_mtx.R:4:3',
  'test_read_mtx.R:18:3', 'test_transferdata.R:59:3',
  'test_transferdata.R:82:3', 'test_transferdata.R:94:3',
  'test_transferdata.R:106:3', 'test_transferdata.R:122:3'

[ FAIL 0 | WARN 0 | SKIP 19 | PASS 650 ]
> 
> proc.time()
   user  system elapsed 
  49.50   61.03  115.98