Expect a class

pz_expect_class() passes when at least one element matches and every match carries class. With not = TRUE it passes when no match does, including when nothing matches. class is one class name, not a space-separated list: expect each class with its own call.

Outside of testthat, a failure aborts with a classed error of class "paparazzi_expectation_failure"; inside testthat, the failure is reported as a test failure instead. See pz_expect_exists() for the retry, timeout, and bridge behavior shared by all expectations.

Usage

pz_expect_class(ctx, class, target = NULL, ..., not = FALSE, timeout = NULL)

Arguments

ctx

A paparazzi context.

class

A single class name to expect on every match.

target

A CSS selector string, a pz_loc() spec, or a list of specs and strings (a union matching any of them). NULL means the current context: the pinned set at a scoped context (so pz_expect_exists() on one trivially passes while the scope is live), the page body at the root.

...

Checked empty; reserved for future use.

not

Invert the check.

timeout

Seconds to wait for the expectation to pass; NULL (default) uses the session default, 0 checks once.

Value

ctx, invisibly.

Examples

if (FALSE) { # paparazzi:::examples_run()
page <- pz_open(pz_example("tasks"))
water <- pz_loc(".task", has_text = "Water")
page |> pz_expect_class("done", target = water, not = TRUE)

page |>
  pz_find(water) |>
  pz_act_click(".task-done") |>
  pz_expect_class("done")
pz_close(page)
}