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## ----include = FALSE----------------------------------------------------------
knitr::opts_chunk$set(
collapse = TRUE,
comment = "#>"
)
set.seed(1014)
## ----setup--------------------------------------------------------------------
library(testthat)
## ----include = FALSE----------------------------------------------------------
snapper <- local_snapshotter()
snapper$start_file("snapshotting.Rmd", "test")
## -----------------------------------------------------------------------------
bullets <- function(text, id = NULL) {
paste0(
"<ul", if (!is.null(id)) paste0(" id=\"", id, "\""), ">\n",
paste0(" <li>", text, "</li>\n", collapse = ""),
"</ul>\n"
)
}
cat(bullets("a", id = "x"))
## -----------------------------------------------------------------------------
test_that("bullets", {
expect_equal(bullets("a"), "<ul>\n <li>a</li>\n</ul>\n")
expect_equal(bullets("a", id = "x"), "<ul id=\"x\">\n <li>a</li>\n</ul>\n")
})
## -----------------------------------------------------------------------------
test_that("bullets", {
expect_snapshot(cat(bullets("a")))
expect_snapshot(cat(bullets("a", "b")))
})
## ----include = FALSE----------------------------------------------------------
# Reset snapshot test
snapper$end_file()
snapper$start_file("snapshotting.Rmd", "test")
## -----------------------------------------------------------------------------
test_that("bullets", {
expect_snapshot(cat(bullets("a")))
expect_snapshot(cat(bullets("a", "b")))
})
## ----include = FALSE----------------------------------------------------------
# Reset snapshot test
snapper$end_file()
snapper$start_file("snapshotting.Rmd", "test")
## ----error = TRUE-------------------------------------------------------------
try({
bullets <- function(text, id = NULL) {
paste0(
"<ul", if (!is.null(id)) paste0(" id=\"", id, "\""), ">\n",
paste0("<li>", text, "</li>\n", collapse = ""),
"</ul>\n"
)
}
test_that("bullets", {
expect_snapshot(cat(bullets("a")))
expect_snapshot(cat(bullets("a", "b")))
})
})
## -----------------------------------------------------------------------------
f <- function() {
print("Hello")
message("Hi!")
warning("How are you?")
}
## -----------------------------------------------------------------------------
test_that("f() makes lots of noise", {
expect_snapshot(f())
})
## ----error = TRUE-------------------------------------------------------------
try({
test_that("you can't add a number and a letter", {
expect_snapshot(1 + "a")
})
})
## -----------------------------------------------------------------------------
test_that("you can't add a number and a letter", {
expect_snapshot(1 + "a", error = TRUE)
})
## -----------------------------------------------------------------------------
test_that("you can't add weird things", {
expect_snapshot(error = TRUE, {
1 + "a"
mtcars + iris
mean + sum
})
})
## -----------------------------------------------------------------------------
test_that("can snapshot a simple list", {
x <- list(a = list(1, 5, 10), b = list("elephant", "banana"))
expect_snapshot_value(x)
})
## -----------------------------------------------------------------------------
knitr::include_graphics("review-image.png")
## -----------------------------------------------------------------------------
knitr::include_graphics("review-text.png")
|
