Nothing
test_that("input checks for data download work", {
expect_error(
download_data(symbol = c("two", "symbols")),
"'symbol' must be a single character."
)
expect_error(
download_data(symbol = "^GDAXI", file = c("two", "filess")),
"'file' is invalid."
)
expect_error(
download_data(symbol = "^GDAXI", file = paste0(tempfile(), ".csv"), verbose = "not_TRUE_or_FALSE"),
"'verbose' must be either TRUE or FALSE."
)
expect_message(
download_data(symbol = "^GDAXI", file = paste0(tempfile(), ".csv"), verbose = TRUE)
)
})
test_that("data download works", {
skip_if_offline()
symbol <- "^GDAXI"
from <- "2000-01-03"
to <- "2000-01-10"
data2 <- download_data(symbol = symbol, from = from, to = to, file = NULL, verbose = FALSE)
expect_true(is.data.frame(data2))
file <- paste0(tempfile(), ".csv")
download_data(symbol = symbol, from = from, to = to, file = file, verbose = FALSE)
data <- read.csv(file = file, header = TRUE, sep = ",", na.strings = "null")
expect_identical(data, data2)
expect_equal(
data,
structure(
list(Date = c("2000-01-03", "2000-01-04", "2000-01-05",
"2000-01-06", "2000-01-07", "2000-01-10"),
Open = c(6961.720215, 6747.240234, 6585.850098, 6501.450195,
6489.939941, 6785.470215),
High = c(7159.330078, 6755.359863, 6585.850098, 6539.310059,
6791.529785, 6975.259766),
Low = c(6720.870117, 6510.459961, 6388.910156, 6402.629883,
6470.140137, 6785.470215),
Close = c(6750.759766, 6586.950195, 6502.069824, 6474.919922,
6780.959961, 6925.52002),
Adj.Close = c(6750.759766, 6586.950195, 6502.069824, 6474.919922,
6780.959961, 6925.52002),
Volume = c(43072500L, 46678400L, 52682800L, 41180600L,
56058900L, 42006200L)),
class = "data.frame",
row.names = c(NA, -6L)
)
)
wrong_from <- "1901-01-01"
expect_warning(
download_data(symbol = symbol, from = wrong_from, to = to, file = file, verbose = FALSE),
"'from' is set to lower bound of '1902-01-01'."
)
expect_error(
download_data(symbol = symbol, from = from, to = as.Date(from) - 1, file = file, verbose = FALSE),
"'to' must not be earlier than 'from'."
)
expect_error(
download_data(symbol = "wrongsymbol", from = from, to = to, file = file),
"Download failed."
)
})
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