R Under development (unstable) (2026-03-16 r89642 ucrt) -- "Unsuffered Consequences"
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> library(testthat)
> library(pnardl)
> 
> test_check("pnardl")

====================================================
 Panel Nonlinear ARDL (PNARDL) -- Summary
====================================================
Call:
pnardl(data = df, depvar = "y", lr = c("y", "x"), sr = character(0), 
    asymmetric = "x", id = "id", time = "time", p = 1, asy_test = FALSE)

Estimator : PMG 
Dep. var  : y 
Asymmetric: x 
Panels    : 3 

--- Pooled Coefficients ---
            Estimate Std.Error t.value Pr(>|t|) sig
(Intercept)   0.5453   0.60168  0.9063  0.46046    
lag1_y       -1.2464   0.14109 -8.8344  0.01257 ** 
L_x_pos       0.2761   0.13248  2.0842  0.17251    
L_x_neg       0.3530   0.07411  4.7629  0.04137 ** 
dL1_y         0.2002   0.18673  1.0722  0.39584    
---
Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.1 ' ' 1

--- Speed of Adjustment (ECT) ---
  Mean phi: -1.2464   Half-life: 0.56 periods
  Convergent panels: 3 / 3
[ FAIL 0 | WARN 0 | SKIP 0 | PASS 9 ]
> 
> proc.time()
   user  system elapsed 
   0.70    0.25    0.93