R Under development (unstable) (2025-08-23 r88688 ucrt) -- "Unsuffered Consequences"
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> library("ccTensor")
> library("nnTensor")
> library("testthat")
> 
> # Setting
> options(testthat.use_colours = FALSE)
> 
> test_file("testthat/test_CUR.R")

══ Testing test_CUR.R ══════════════════════════════════════════════════════════

[ FAIL 0 | WARN 0 | SKIP 0 | PASS 0 ]
[ FAIL 0 | WARN 0 | SKIP 0 | PASS 1 ]
[ FAIL 0 | WARN 0 | SKIP 0 | PASS 2 ]
[ FAIL 0 | WARN 0 | SKIP 0 | PASS 3 ]
[ FAIL 0 | WARN 0 | SKIP 0 | PASS 4 ]
[ FAIL 0 | WARN 0 | SKIP 0 | PASS 5 ] Done!
> test_file("testthat/test_CX.R")

══ Testing test_CX.R ═══════════════════════════════════════════════════════════

[ FAIL 0 | WARN 0 | SKIP 0 | PASS 0 ]
[ FAIL 0 | WARN 0 | SKIP 0 | PASS 1 ]
[ FAIL 0 | WARN 0 | SKIP 0 | PASS 2 ]
[ FAIL 0 | WARN 0 | SKIP 0 | PASS 3 ]
[ FAIL 0 | WARN 0 | SKIP 0 | PASS 4 ]
[ FAIL 0 | WARN 0 | SKIP 0 | PASS 5 ] Done!
> test_file("testthat/test_MultiCX.R")

══ Testing test_MultiCX.R ══════════════════════════════════════════════════════

[ FAIL 0 | WARN 0 | SKIP 0 | PASS 0 ]
[ FAIL 1 | WARN 0 | SKIP 0 | PASS 0 ]

── Error ('test_MultiCX.R:14:1'): (code run outside of `test_that()`) ──────────
Error in `ttl(out1$U, list(out1$C[[1]]$C, out1$C[[2]]$C, out1$C[[3]]$C), 
    m = 1:3)`: could not find function "ttl"
Backtrace:
    ▆
 1. └─testthat::expect_equivalent(...) at test_MultiCX.R:14:1
 2.   └─testthat::quasi_label(enquo(expected), expected.label, arg = "expected")
 3.     └─rlang::eval_bare(expr, quo_get_env(quo))

[ FAIL 1 | WARN 0 | SKIP 0 | PASS 0 ]
> 
> proc.time()
   user  system elapsed 
   3.09    0.57    3.79