R version 4.6.0 RC (2026-04-21 r89932 ucrt) -- "Because it was There"
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> library(testthat)
> library(vartest)

Attaching package: 'vartest'

The following objects are masked from 'package:stats':

    ansari.test, mood.test

> 
> test_check("vartest")
==========================================================================================
Test Method                  | Power      | Type I Error | Adj. Power      | Evaluation     
------------------------------------------------------------------------------------------
Bartlett                     | 0.9720     | 0.0300       | 0.9841          | Suggested *    
Z Variance                   | 0.9720     | 0.0300       | 0.9841          | Suggested *    
Hartley (Mean)               | 0.9740     | 0.0330       | 0.9837          | -              
Hartley (Harmonic)           | 0.9740     | 0.0330       | 0.9837          | -              
Hartley (Max n)              | 0.9740     | 0.0330       | 0.9837          | -              
Hartley (Min Var)            | 0.9740     | 0.0330       | 0.9837          | -              
Modified Z Variance          | 0.9820     | 0.0520       | 0.9811          | -              
Fisher                       | 0.9890     | 0.0890       | 0.9768          | -              
Levene (Mean, Sq)            | 0.9670     | 0.0520       | 0.9656          | -              
O'Brien (Mean)               | 0.9640     | 0.0500       | 0.9640          | -              
O'Brien (Median)             | 0.9560     | 0.0430       | 0.9623          | -              
Levene (Trim, Sq)            | 0.9580     | 0.0460       | 0.9615          | -              
Levene (Med, Sq)             | 0.9570     | 0.0450       | 0.9614          | -              
O'Brien (Trimmed Mean)       | 0.9540     | 0.0430       | 0.9605          | -              
Capon                        | 0.9530     | 0.0520       | 0.9511          | -              
Klotz                        | 0.9540     | 0.0540       | 0.9503          | -              
Levene (Med, Abs)            | 0.9340     | 0.0500       | 0.9340          | -              
Levene (Trim, Abs)           | 0.9410     | 0.0570       | 0.9330          | -              
Levene (Mean, Abs)           | 0.9440     | 0.0610       | 0.9320          | -              
Fligner-Killeen              | 0.9220     | 0.0470       | 0.9263          | -              
Duran                        | 0.9020     | 0.0530       | 0.8970          | -              
Mood                         | 0.9010     | 0.0560       | 0.8910          | -              
Cochran's C                  | 0.8160     | 0.0310       | 0.8690          | -              
G                            | 0.8160     | 0.0310       | 0.8690          | -              
Ansari-Bradley               | 0.8150     | 0.0460       | 0.8255          | -              
David-Barton                 | 0.8150     | 0.0460       | 0.8255          | -              
Siegel-Tukey                 | 0.8130     | 0.0470       | 0.8209          | -              
Talwar-Gentle                | 0.8080     | 0.0500       | 0.8080          | -              
==========================================================================================
* Suggested method yielding the highest adjusted power with the lowest Type I error.

	Bartlett's Test

data:  Sepal.Length and Species
X-squared = 16.006, df = 2, p-value = 0.0003345


	Ansari Bradley Test

data:  Sepal.Length and Species
X-squared = 9.5137, df = 2, p-value = 0.008593


	Capon Test

data:  Sepal.Length and Species
X-squared = 10.234, df = 2, p-value = 0.005993


	David Barton Test

data:  Sepal.Length and Species
X-squared = 9.5137, df = 2, p-value = 0.008593


	Duran Test

data:  Sepal.Length and Species
X-squared = 9.6837, df = 2, p-value = 0.007892


	Fligner-Killeen Test

data:  Sepal.Length and Species
X-squared = 11.618, df = 2, p-value = 0.003


	Klotz Test

data:  Sepal.Length and Species
X-squared = 11.304, df = 2, p-value = 0.00351


	Mood Test

data:  Sepal.Length and Species
X-squared = 9.4451, df = 2, p-value = 0.008893


	Siegel Tukey Test

data:  Sepal.Length and Species
X-squared = 8.4519, df = 2, p-value = 0.01461


	Talwar and Gentle Test

data:  Sepal.Length and Species
X-squared = 9.6413, df = 2, p-value = 0.008062


	Cochran's C Test

data:  Sepal.Length and Species
F = 0.50859, num df = 49, denom df = 98, p-value = 0.003456


	Modified Z Variance Test

data:  Sepal.Length and Species
F = 8.2779, num df = 2, denom df = Inf, p-value = 0.0002541


	Fisher's Test

data:  Sepal.Length and Species
F = 3.2543, num df.virginica = 49, denom df.setosa = 49, p-value =
6.366e-05


	G Test

data:  Sepal.Length and Species
F.virginica = 0.50859, num df = 49, denom df = 98, p-value = 0.003456


	Hartley's Maximum F-Ratio Test

data:  Sepal.Length and Species
F-max = 3.2543, df = 49, p-value = 0.0004241


	Levene's Test

data:  Sepal.Length and Species
F = 7.3811, num df = 2, denom df = 147, p-value = 0.0008818


	O'Brien Test

data:  Sepal.Length and Species
F = 6.4537, num df = 2, denom df = 147, p-value = 0.002058


	Z Variance Test

data:  Sepal.Length and Species
F = 7.6225, num df = 2, denom df = Inf, p-value = 0.0004893

[ FAIL 0 | WARN 0 | SKIP 0 | PASS 115 ]
> 
> 
> proc.time()
   user  system elapsed 
  79.15    2.00   81.12