tests/test-file.R

In diffobj: Diffs for R Objects

NAME <- "diffFile"
source(file.path('_helper', 'init.R'))

# - Code File ------------------------------------------------------------------

# # compare two crayon file versions
# # These should eventually just be downloaded and made into diffFile tests

f.p.1 <- file.path("_helper", "objs", "diffFile", "s.o.3f1f68.R")
f.p.2 <- file.path("_helper", "objs", "diffFile", "s.o.30dbe0.R")

# url.1 <- "https://raw.githubusercontent.com/gaborcsardi/crayon/3f1f68ab177b82a27e754a58264af801f7194820/R/string_operations.r"
# url.2 <- "https://raw.githubusercontent.com/gaborcsardi/crayon/30dbe0d4d92157350af3cb3aeebd6d9a9cdf5c0e/R/string_operations.r"
# f.1 <- readLines(url.1)
# f.2 <- readLines(url.2)
# writeLines(f.1, f.p.1)
# writeLines(f.2, f.p.2)

all.equal(as.character(diffFile(f.p.1, f.p.2)), rdsf(100))

# - RDS ------------------------------------------------------------------------

f1 <- tempfile()
f2 <- tempfile()

mx1 <- mx2 <- matrix(1:9, 3)
mx2[5] <- 99
saveRDS(mx1, f1)
saveRDS(mx2, f2)

is(diffobj:::get_rds(f1), "matrix")
is(diffobj:::get_rds(f2), "matrix")

ref <- as.character(diffPrint(mx1, mx2))
identical(as.character(diffPrint(mx1, f2, cur.banner="mx2")), ref)
identical(as.character(diffPrint(f1, mx2, tar.banner="mx1")), ref)
identical(
  as.character(diffPrint(f1, f2, tar.banner="mx1", cur.banner="mx2")), ref
)
isTRUE(!identical(as.character(diffPrint(mx1, f2, rds=FALSE)), ref))
unlink(c(f1, f2))

# - file -----------------------------------------------------------------------

f1 <- tempfile()
f2 <- tempfile()
letters2 <- letters
letters2[15] <- "HELLO"

writeLines(letters, f1)
writeLines(letters2, f2)

identical(
  as.character(diffChr(letters, letters2, tar.banner="f1", cur.banner="f2")),
  as.character(diffFile(f1, f2))
)
unlink(c(f1, f2))

# issue 133 h/t Noam Ross, thanks for the test

x <- tempfile()
y <- tempfile()
cat("Hello\nthere\n", file = x)
file.copy(x, y)
identical(
  as.character(diffFile(x, y, format = "raw")),
  structure(
    c("No visible differences between objects.",
      "< x          > y        ",
      "@@ 1,2 @@    @@ 1,2 @@  ",
      "  Hello        Hello    ",
      "  there        there    "), len = 5L)
)
unlink(c(x, y))

# - CSV ------------------------------------------------------------------------

f1 <- tempfile()
f2 <- tempfile()

iris2 <- iris
iris2$Sepal.Length[25] <- 9.9

write.csv(iris, f1, row.names=FALSE)
write.csv(iris2, f2, row.names=FALSE)

identical(
  as.character(diffPrint(iris, iris2, tar.banner="f1", cur.banner="f2")),
  as.character(diffCsv(f1, f2))
)
unlink(c(f1, f2))