tests/testthat/_snaps/expect-inheritance.md

In testthat: Unit Testing for R

expect_s[34]_class can check not S3/S4

factor() is an S3 object

A() is an S4 object

test_s4_class respects class hierarchy

C() inherits from 'C'/'A'/'B'/'list'/'vector' not 'D'.

test_s3_class respects class hierarchy

`x` inherits from 'a'/'b' not 'c'.

`x` inherits from 'a'/'b' not 'c'/'d'.

testthat documentation built on Oct. 6, 2023, 5:10 p.m.