Running ‘testthat.R’ [1s/2s]
Running the tests in ‘tests/testthat.R’ failed.
Complete output:
  > library(testthat)
  > library(multinets)
  multinets was developed by Neylson Crepalde as an extension to 'igraph'
  > 
  > test_check("multinets")
  [ FAIL 5 | WARN 0 | SKIP 0 | PASS 0 ]
  
  ══ Failed tests ════════════════════════════════════════════════════════════════
  ── Error (test-extraction.R:4:3): extractions work properly ────────────────────
  <packageNotFoundError/error/condition>
  Error in `find.package(package, lib.loc, verbose = verbose)`: there is no package called 'sand'
  Backtrace:
      ▆
   1. └─utils::data(g.bip, package = "sand") at test-extraction.R:4:2
   2.   └─base::find.package(package, lib.loc, verbose = verbose)
  ── Error (test-is_multilevel.R:7:3): is_multilevel works properly ──────────────
  <packageNotFoundError/error/condition>
  Error in `find.package(package, lib.loc, verbose = verbose)`: there is no package called 'sand'
  Backtrace:
      ▆
   1. └─utils::data(g.bip, package = "sand") at test-is_multilevel.R:7:2
   2.   └─base::find.package(package, lib.loc, verbose = verbose)
  ── Error (test-layout_conditions.R:5:3): layout_multilevel responds correctly to various objects ──
  <packageNotFoundError/error/condition>
  Error in `find.package(package, lib.loc, verbose = verbose)`: there is no package called 'sand'
  Backtrace:
      ▆
   1. └─utils::data(g.bip, package = "sand") at test-layout_conditions.R:5:2
   2.   └─base::find.package(package, lib.loc, verbose = verbose)
  ── Error (test-mode_transformation.R:5:3): mode transformation responds properly to different objects ──
  <packageNotFoundError/error/condition>
  Error in `find.package(package, lib.loc, verbose = verbose)`: there is no package called 'sand'
  Backtrace:
      ▆
   1. └─utils::data(g.bip, package = "sand") at test-mode_transformation.R:5:2
   2.   └─base::find.package(package, lib.loc, verbose = verbose)
  ── Error (test-mode_transformation.R:14:3): mode transformation works without specifying 'which' ──
  Error in `"igraph" %in% class(graph)`: object 'g.bip' not found
  Backtrace:
      ▆
   1. └─igraph::upgrade_graph(g.bip) at test-mode_transformation.R:14:2
   2.   ├─base::stopifnot(is_igraph(graph))
   3.   └─igraph::is_igraph(graph)
   4.     └─"igraph" %in% class(graph)
  
  [ FAIL 5 | WARN 0 | SKIP 0 | PASS 0 ]
  Error: Test failures
  Execution halted