library(testit)
assert('find_symbols() identifies all symbols', {
(find_symbols('x = x + 1; rnorm(1, std = z)') %==% c('x', 'rnorm', 'z'))
})
knit_lazy = function(lazy = TRUE) {
in_dir(tempdir(), {
txt = c(sprintf('```{r test, cache=TRUE, cache.lazy=%s}', lazy),
'x1 = Sys.time()', '```')
knit(text = txt, quiet = TRUE)
x2 = x1
Sys.sleep(0.1)
knit(text = txt, quiet = TRUE)
x1 == x2 # x1 should not be updated
})
}
assert('cache.lazy = TRUE/FALSE works', {
(knit_lazy(TRUE))
(knit_lazy(FALSE))
})
knit_code$set(a = 1, b = 2, c = 3)
assert('dep_prev() sets dependencies on previous chunks', {
# dependency is empty now
(dep_list$get() %==% list())
# b/c depend on a, c depends on b
dep_prev()
(dep_list$get() %==% list(a = c('b', 'c'), b = 'c'))
})
dep_list$restore()
knit_code$restore()
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