Running ‘testthat.R’ [10s/29s]
Running the tests in ‘tests/testthat.R’ failed.
Complete output:
  > library(testthat)
  > library(dash)
  > 
  > test_check("dash")
  gannet.stats.ox.ac.uk is not a valid IPv4 or IPv6 address.
  createTcpServer: Unknown system error 1
  gannet.stats.ox.ac.uk is not a valid IPv4 or IPv6 address.
  createTcpServer: Unknown system error 1
  gannet.stats.ox.ac.uk is not a valid IPv4 or IPv6 address.
  createTcpServer: Unknown system error 1
  gannet.stats.ox.ac.uk is not a valid IPv4 or IPv6 address.
  createTcpServer: Unknown system error 1
  gannet.stats.ox.ac.uk is not a valid IPv4 or IPv6 address.
  createTcpServer: Unknown system error 1
  [ FAIL 5 | WARN 0 | SKIP 0 | PASS 132 ]
  
  ══ Failed tests ════════════════════════════════════════════════════════════════
  ── Error (test-attributes.R:33:3): stylesheets can be added with or without attributes ──
  Error in `initialize(...)`: Failed to create server
  Backtrace:
      ▆
   1. └─app$run_server(block = FALSE) at test-attributes.R:33:2
   2.   └─self$server$ignite(block = block, showcase = showcase, ...) at dash/R/dash.R:1455:6
   3.     └─private$run(block = block, showcase = showcase, ..., silent = silent)
   4.       └─private$run_allowing_server(showcase = showcase)
   5.         └─httpuv::startDaemonizedServer(...)
   6.           └─WebServer$new(host, port, app, quiet)
   7.             └─httpuv initialize(...)
  ── Error (test-attributes.R:256:3): stylesheet can be passed as a simple list ──
  Error in `initialize(...)`: Failed to create server
  Backtrace:
      ▆
   1. └─app$run_server(block = FALSE) at test-attributes.R:256:2
   2.   └─self$server$ignite(block = block, showcase = showcase, ...) at dash/R/dash.R:1455:6
   3.     └─private$run(block = block, showcase = showcase, ..., silent = silent)
   4.       └─private$run_allowing_server(showcase = showcase)
   5.         └─httpuv::startDaemonizedServer(...)
   6.           └─WebServer$new(host, port, app, quiet)
   7.             └─httpuv initialize(...)
  ── Error (test-attributes.R:344:3): default favicon resource is supplied when none is present in assets ──
  Error in `initialize(...)`: Failed to create server
  Backtrace:
      ▆
   1. └─app$run_server(block = FALSE) at test-attributes.R:344:2
   2.   └─self$server$ignite(block = block, showcase = showcase, ...) at dash/R/dash.R:1455:6
   3.     └─private$run(block = block, showcase = showcase, ..., silent = silent)
   4.       └─private$run_allowing_server(showcase = showcase)
   5.         └─httpuv::startDaemonizedServer(...)
   6.           └─WebServer$new(host, port, app, quiet)
   7.             └─httpuv initialize(...)
  ── Error (test-routes.R:26:2): URLs are properly redirected with app$redirect ──
  Error in `initialize(...)`: Failed to create server
  Backtrace:
      ▆
   1. └─app$run_server(block = FALSE) at test-routes.R:26:1
   2.   └─self$server$ignite(block = block, showcase = showcase, ...) at dash/R/dash.R:1455:6
   3.     └─private$run(block = block, showcase = showcase, ..., silent = silent)
   4.       └─private$run_allowing_server(showcase = showcase)
   5.         └─httpuv::startDaemonizedServer(...)
   6.           └─WebServer$new(host, port, app, quiet)
   7.             └─httpuv initialize(...)
  ── Error (test-routes.R:94:2): temporary redirection of URLs is possible with app$server_route ──
  Error in `initialize(...)`: Failed to create server
  Backtrace:
      ▆
   1. └─app$run_server(block = FALSE) at test-routes.R:94:1
   2.   └─self$server$ignite(block = block, showcase = showcase, ...) at dash/R/dash.R:1455:6
   3.     └─private$run(block = block, showcase = showcase, ..., silent = silent)
   4.       └─private$run_allowing_server(showcase = showcase)
   5.         └─httpuv::startDaemonizedServer(...)
   6.           └─WebServer$new(host, port, app, quiet)
   7.             └─httpuv initialize(...)
  
  [ FAIL 5 | WARN 0 | SKIP 0 | PASS 132 ]
  Error: Test failures
  Execution halted