Fix testthat warnings

[judith-bourque]

Issue

3 warnings occur when running devtools::test():

✔ |   1     0 | analysis
───────────────────────────────────────────────────────────────────────────────────────────────────────────────────
Warning (test-analysis.R:15:1): (code run outside of `test_that()`)
`context()` was deprecated in the 3rd edition.
Backtrace:
 1. testthat::context("Biased samples")
      at test-analysis.R:15:0
 2. testthat:::edition_deprecate(3, "context()")
───────────────────────────────────────────────────────────────────────────────────────────────────────────────────
✔ |   1    19 | Biased samples [0.3s]                                                                              
───────────────────────────────────────────────────────────────────────────────────────────────────────────────────
Warning (test-analysis.R:92:1): (code run outside of `test_that()`)
`context()` was deprecated in the 3rd edition.
Backtrace:
 1. testthat::context("Calculate Proportions")
      at test-analysis.R:92:0
 2. testthat:::edition_deprecate(3, "context()")
───────────────────────────────────────────────────────────────────────────────────────────────────────────────────
✔ |   1     6 | Calculate Proportions                                                                              
───────────────────────────────────────────────────────────────────────────────────────────────────────────────────
Warning (test-analysis.R:117:1): (code run outside of `test_that()`)
`context()` was deprecated in the 3rd edition.
Backtrace:
 1. testthat::context("Run dictionary analysis")
      at test-analysis.R:117:0
 2. testthat:::edition_deprecate(3, "context()")
───────────────────────────────────────────────────────────────────────────────────────────────────────────────────
⠏ |         0 | Run dictionary analysis                                                                            100% expressions/words found
0.278 sec elapsed
⠋ |         1 | Run dictionary analysis                                                                            100% expressions/words found
0.262 sec elapsed
⠙ |         2 | Run dictionary analysis                                                                            100% expressions/words found
0.249 sec elapsed
⠹ |         3 | Run dictionary analysis                                                                            100% expressions/words found
0.252 sec elapsed
⠸ |         4 | Run dictionary analysis                                                                            100% expressions/words found
0.021 sec elapsed
✔ |         7 | Run dictionary analysis [1.1s]
✔ |        19 | dev_t                                                                                              
✔ |         2 | domestication                                                                                      
✔ |         6 | transform                                                                                          

══ Results ════════════════════════════════════════════════════════════════════════════════════════════════════════
Duration: 2.0 s

[ FAIL 0 | WARN 3 | SKIP 0 | PASS 59 ]

Proposed solution

• Fix context in test-analysis.R