Running 'spelling.R' [0s/1s]
  Running 'testthat.R' [53s/58s]
Running the tests in 'tests/testthat.R' failed.
Complete output:
  > library(testthat)
  > library(pdqr)
  > 
  > test_check("pdqr")
  -- 1. Error: plot.p works (@test-plot.R#16)  -----------------------------------
  there is no package called 'vdiffr'
  Backtrace:
   1. vdiffr::expect_doppelganger
   2. base::getExportedValue(pkg, name)
   3. base::asNamespace(ns)
   4. base::getNamespace(ns)
   5. base::loadNamespace(name)
   6. base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   7. base:::withOneRestart(expr, restarts[[1L]])
   8. base:::doWithOneRestart(return(expr), restart)
  
  -- 2. Error: plot.p and lines.p use `n_extra_grid` argument (@test-plot.R#74)  -
  there is no package called 'vdiffr'
  Backtrace:
   1. vdiffr::expect_doppelganger
   2. base::getExportedValue(pkg, name)
   3. base::asNamespace(ns)
   4. base::getNamespace(ns)
   5. base::loadNamespace(name)
   6. base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   7. base:::withOneRestart(expr, restarts[[1L]])
   8. base:::doWithOneRestart(return(expr), restart)
  
  -- 3. Error: plot.d works (@test-plot.R#102)  ----------------------------------
  there is no package called 'vdiffr'
  Backtrace:
   1. vdiffr::expect_doppelganger
   2. base::getExportedValue(pkg, name)
   3. base::asNamespace(ns)
   4. base::getNamespace(ns)
   5. base::loadNamespace(name)
   6. base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   7. base:::withOneRestart(expr, restarts[[1L]])
   8. base:::doWithOneRestart(return(expr), restart)
  
  -- 4. Error: plot.d and lines.d use `n_extra_grid` argument (@test-plot.R#161)  
  there is no package called 'vdiffr'
  Backtrace:
   1. vdiffr::expect_doppelganger
   2. base::getExportedValue(pkg, name)
   3. base::asNamespace(ns)
   4. base::getNamespace(ns)
   5. base::loadNamespace(name)
   6. base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   7. base:::withOneRestart(expr, restarts[[1L]])
   8. base:::doWithOneRestart(return(expr), restart)
  
  -- 5. Error: plot.d handles dirac-like 'continuous' functions (@test-plot.R#176)
  there is no package called 'vdiffr'
  Backtrace:
   1. vdiffr::expect_doppelganger
   2. base::getExportedValue(pkg, name)
   3. base::asNamespace(ns)
   4. base::getNamespace(ns)
   5. base::loadNamespace(name)
   6. base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   7. base:::withOneRestart(expr, restarts[[1L]])
   8. base:::doWithOneRestart(return(expr), restart)
  
  -- 6. Error: plot.q works (@test-plot.R#212)  ----------------------------------
  there is no package called 'vdiffr'
  Backtrace:
   1. vdiffr::expect_doppelganger
   2. base::getExportedValue(pkg, name)
   3. base::asNamespace(ns)
   4. base::getNamespace(ns)
   5. base::loadNamespace(name)
   6. base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   7. base:::withOneRestart(expr, restarts[[1L]])
   8. base:::doWithOneRestart(return(expr), restart)
  
  -- 7. Error: plot.q and lines.q use `n_extra_grid` argument (@test-plot.R#271)  
  there is no package called 'vdiffr'
  Backtrace:
   1. vdiffr::expect_doppelganger
   2. base::getExportedValue(pkg, name)
   3. base::asNamespace(ns)
   4. base::getNamespace(ns)
   5. base::loadNamespace(name)
   6. base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   7. base:::withOneRestart(expr, restarts[[1L]])
   8. base:::doWithOneRestart(return(expr), restart)
  
  -- 8. Error: plot.r works (@test-plot.R#297)  ----------------------------------
  there is no package called 'vdiffr'
  Backtrace:
   1. vdiffr::expect_doppelganger
   2. base::getExportedValue(pkg, name)
   3. base::asNamespace(ns)
   4. base::getNamespace(ns)
   5. base::loadNamespace(name)
   6. base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   7. base:::withOneRestart(expr, restarts[[1L]])
   8. base:::doWithOneRestart(return(expr), restart)
  
  -- 9. Error: plot.r uses `n_sample` argument (@test-plot.R#333)  ---------------
  there is no package called 'vdiffr'
  Backtrace:
   1. vdiffr::expect_doppelganger
   2. base::getExportedValue(pkg, name)
   3. base::asNamespace(ns)
   4. base::getNamespace(ns)
   5. base::loadNamespace(name)
   6. base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   7. base:::withOneRestart(expr, restarts[[1L]])
   8. base:::doWithOneRestart(return(expr), restart)
  
  -- 10. Error: region_draw works (@test-region.R#452)  --------------------------
  there is no package called 'vdiffr'
  Backtrace:
   1. vdiffr::expect_doppelganger
   2. base::getExportedValue(pkg, name)
   3. base::asNamespace(ns)
   4. base::getNamespace(ns)
   5. base::loadNamespace(name)
   6. base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   7. base:::withOneRestart(expr, restarts[[1L]])
   8. base:::doWithOneRestart(return(expr), restart)
  
  -- 11. Error: roc_plot works (@test-summ_roc.R#83)  ----------------------------
  there is no package called 'vdiffr'
  Backtrace:
   1. vdiffr::expect_doppelganger
   2. base::getExportedValue(pkg, name)
   3. base::asNamespace(ns)
   4. base::getNamespace(ns)
   5. base::loadNamespace(name)
   6. base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
   7. base:::withOneRestart(expr, restarts[[1L]])
   8. base:::doWithOneRestart(return(expr), restart)
  
  == testthat results  ===========================================================
  [ OK: 3324 | SKIPPED: 32 | WARNINGS: 0 | FAILED: 11 ]
  1. Error: plot.p works (@test-plot.R#16) 
  2. Error: plot.p and lines.p use `n_extra_grid` argument (@test-plot.R#74) 
  3. Error: plot.d works (@test-plot.R#102) 
  4. Error: plot.d and lines.d use `n_extra_grid` argument (@test-plot.R#161) 
  5. Error: plot.d handles dirac-like 'continuous' functions (@test-plot.R#176) 
  6. Error: plot.q works (@test-plot.R#212) 
  7. Error: plot.q and lines.q use `n_extra_grid` argument (@test-plot.R#271) 
  8. Error: plot.r works (@test-plot.R#297) 
  9. Error: plot.r uses `n_sample` argument (@test-plot.R#333) 
  1. ...
  
  Error: testthat unit tests failed
  Execution halted