Nothing
test_that("paired diffs", {
expect_snapshot({
"no difference"
diff_element(c("a", "b"), c("a", "b"))
"single change"
diff_element(c("a", "b", "c"), c("a", "b"))
diff_element(c("a", "b"), c("a", "b", "c"))
diff_element(c("a", "B", "c"), c("a", "b", "c"))
"multiple contexts"
diff_element(
c("a", "b", letters, "a", "b", "c", letters, "X"),
c("a", "b", "c", letters, "a", "b", letters, "Y")
)
"truncation"
diff_element(c("X", letters), letters)
diff_element(c(letters, "X"), letters)
"zero length"
diff_element(letters[1:10], character())
diff_element(character(), letters[1:10])
})
})
test_that("side-by-side diffs", {
expect_snapshot({
x <- c("a", "a")
diff_element(c(x, "a", "b", "c"), c(x, "a", "b"), width = 20)
diff_element(c(x, "a", "b"), c(x, "a", "b", "c"), width = 20)
diff_element(c(x, "a", "B", "c"), c(x, "a", "b", "c"), width = 20)
"context"
diff_element(c(letters, "a", "b"), c(letters, "a", "b", "c"), width = 20)
})
})
test_that("element-wise diffs", {
expect_snapshot({
diff_element(c("a", "b", "c", "d"), c("a", "b"), width = 10)
diff_element(c("a", "b"), c("a", "b", "c", "d"), width = 10)
diff_element(c("a", "B", "C", "d"), c("a", "b", "c", "d"), width = 10)
"context"
diff_element(c(letters, "a", "b"), c(letters, "a", "b", "c"), width = 10)
})
})
test_that("only interleave if change has equal number of lines", {
expect_snapshot({
x <- letters # to anchor diffs
diff_element(c(x, 1:2, x), c(x, -(1:2), x), width = 10)
diff_element(c(x, 1:3, x), c(x, -(1:2), x), width = 10)
diff_element(c(x, 1:2, x), c(x, -(1:3), x), width = 10)
})
})
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