Package check result: ERROR

Check: examples, Result: ERROR
  Running examples in ‘tidysq-Ex.R’ failed
  The error most likely occurred in:
  
  > base::assign(".ptime", proc.time(), pos = "CheckExEnv")
  > ### Name: export_sq
  > ### Title: Export sq objects into other formats
  > ### Aliases: export_sq
  > 
  > ### ** Examples
  > 
  > # DNA and amino acid sequences can be exported to most packages
  > sq_ami <- sq(c("MVVGL", "LAVPP"), alphabet = "ami_bsc")
  > export_sq(sq_ami, "ape::AAbin")
  Error in export_sq.sq_ami_bsc(sq_ami, "ape::AAbin") : 
    Assertion on '"ape"' failed: you need to install 'ape' package.
  Calls: export_sq ... export_sq.sq_ami_bsc -> assert_package_installed -> <Anonymous> -> mstop
  Execution halted

Check: tests, Result: ERROR
    Running ‘spelling.R’ [0s/0s]
    Running ‘testthat.R’ [4s/4s]
  Running the tests in ‘tests/testthat.R’ failed.
  Complete output:
    > library(testthat)
    > library(tidysq)
    
    Attaching package: 'tidysq'
    
    The following object is masked from 'package:base':
    
        paste
    
    > 
    > test_check("tidysq")
    [ FAIL 8 | WARN 0 | SKIP 1 | PASS 584 ]
    
    ══ Skipped tests (1) ═══════════════════════════════════════════════════════════
    • warning handling on C++ side is poorly implemented (1):
      'test-warnings.R:39:3'
    
    ══ Failed tests ════════════════════════════════════════════════════════════════
    ── Error ('test-casting.R:49:3'): (code run outside of `test_that()`) ──────────
    <packageNotFoundError/error/condition>
    Error in `loadNamespace(x)`: there is no package called 'Biostrings'
    Backtrace:
        ▆
     1. ├─base::suppressWarnings(...) at test-casting.R:48:1
     2. │ └─base::withCallingHandlers(...)
     3. └─base::loadNamespace(x) at test-casting.R:49:3
     4.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
     5.     └─base (local) withOneRestart(expr, restarts[[1L]])
     6.       └─base (local) doWithOneRestart(return(expr), restart)
    ── Error ('test-find_motifs.R:169:3'): 'start' and 'end' columns have values between 1 and length(sequence) ──
    <packageNotFoundError/error/condition>
    Error in `loadNamespace(x)`: there is no package called 'purrr'
    Backtrace:
        ▆
     1. └─base::loadNamespace(x) at test-find_motifs.R:169:3
     2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
     3.     └─base (local) withOneRestart(expr, restarts[[1L]])
     4.       └─base (local) doWithOneRestart(return(expr), restart)
    ── Error ('test-find_motifs.R:209:3'): index columns can be used to retrieve found subsequence from original sequence ──
    <packageNotFoundError/error/condition>
    Error in `loadNamespace(x)`: there is no package called 'purrr'
    Backtrace:
        ▆
     1. └─base::loadNamespace(x) at test-find_motifs.R:209:3
     2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
     3.     └─base (local) withOneRestart(expr, restarts[[1L]])
     4.       └─base (local) doWithOneRestart(return(expr), restart)
    ── Error ('test-pkg-Biostrings.R:29:1'): (code run outside of `test_that()`) ───
    <packageNotFoundError/error/condition>
    Error in `loadNamespace(x)`: there is no package called 'Biostrings'
    Backtrace:
        ▆
     1. └─base::loadNamespace(x) at test-pkg-Biostrings.R:29:1
     2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
     3.     └─base (local) withOneRestart(expr, restarts[[1L]])
     4.       └─base (local) doWithOneRestart(return(expr), restart)
    ── Error ('test-pkg-ape.R:12:1'): (code run outside of `test_that()`) ──────────
    <packageNotFoundError/error/condition>
    Error in `loadNamespace(x)`: there is no package called 'ape'
    Backtrace:
        ▆
     1. └─base::loadNamespace(x) at test-pkg-ape.R:12:1
     2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
     3.     └─base (local) withOneRestart(expr, restarts[[1L]])
     4.       └─base (local) doWithOneRestart(return(expr), restart)
    ── Error ('test-pkg-bioseq.R:15:1'): (code run outside of `test_that()`) ───────
    <packageNotFoundError/error/condition>
    Error in `loadNamespace(x)`: there is no package called 'bioseq'
    Backtrace:
        ▆
     1. └─base::loadNamespace(x) at test-pkg-bioseq.R:15:1
     2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
     3.     └─base (local) withOneRestart(expr, restarts[[1L]])
     4.       └─base (local) doWithOneRestart(return(expr), restart)
    ── Error ('test-pkg-seqinr.R:8:31'): (code run outside of `test_that()`) ───────
    <packageNotFoundError/error/condition>
    Error in `loadNamespace(x)`: there is no package called 'seqinr'
    Backtrace:
        ▆
     1. ├─base::lapply(str_dna, function(x) seqinr::as.SeqFastadna(seqinr::s2c(x))) at test-pkg-seqinr.R:8:1
     2. │ └─tidysq (local) FUN(X[[i]], ...)
     3. └─base::loadNamespace(x) at test-pkg-seqinr.R:8:31
     4.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
     5.     └─base (local) withOneRestart(expr, restarts[[1L]])
     6.       └─base (local) doWithOneRestart(return(expr), restart)
    ── Error ('test-random_sq.R:31:3'): using sd argument of random_sq() doesn't generate negative-length sequences ──
    <packageNotFoundError/error/condition>
    Error in `loadNamespace(x)`: there is no package called 'mockr'
    Backtrace:
        ▆
     1. └─base::loadNamespace(x) at test-random_sq.R:31:3
     2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
     3.     └─base (local) withOneRestart(expr, restarts[[1L]])
     4.       └─base (local) doWithOneRestart(return(expr), restart)
    
    [ FAIL 8 | WARN 0 | SKIP 1 | PASS 584 ]
    Error: Test failures
    Execution halted