Fix: find_missing_integerish() handles complex type

[ckirchho]

Calling qtest(), qassert(), or qexpect() with rules = "X" on an object of complex type that passes the integerish check will throw an internal error from find_missing_integerish() because it is missing a case for CPLXSXP.

Example

qtest(0+1i, "x")
#> [1] FALSE
qtest(0+0i, "x")
#> [1] TRUE
qtest(NA_complex_, "x")
#> [1] TRUE
qtest(0+1i, "X")
#> [1] FALSE
qtest(0+0i, "X")
#> Error in checkmate::qtest(0 + (0+0i), "X"): Error in find_missing_integerish: x must be logical or numeric
qtest(NA_complex_, "X")
#> Error in checkmate::qtest(NA_complex_, "X"): Error in find_missing_integerish: x must be logical or numeric

Corrected

qtest(0+1i, "x")
#> [1] FALSE
qtest(0+0i, "x")
#> [1] TRUE
qtest(NA_complex_, "x")
#> [1] TRUE
qtest(0+1i, "X")
#> [1] FALSE
qtest(0+0i, "X")
#> [1] TRUE
qtest(NA_complex_, "X")
#> [1] FALSE

^{Created on 2026-01-29 with reprex v2.1.0}