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test_that("can copy to from remote sources", {
df <- tibble(x = 1:10)
con1 <- DBI::dbConnect(RSQLite::SQLite(), ":memory:")
on.exit(DBI::dbDisconnect(con1), add = TRUE)
df_1 <- copy_to(con1, df, "df1")
# Create from tbl in same database
df_2 <- copy_to(con1, df_1, "df2")
expect_equal(collect(df_2), df)
# Create from tbl in another data
con2 <- DBI::dbConnect(RSQLite::SQLite(), ":memory:")
on.exit(DBI::dbDisconnect(con2), add = TRUE)
df_3 <- copy_to(con2, df_1, "df3")
expect_equal(collect(df_3), df)
})
test_that("can round trip basic data frame", {
df <- test_frame(x = c(1, 10, 9, NA), y = letters[1:4])
expect_equal_tbls(df)
})
test_that("NAs in character fields handled by db sources (#2256)", {
df <- test_frame(
x = c("a", "aa", NA),
y = c(NA, "b", "bb"),
z = c("cc", NA, "c")
)
expect_equal_tbls(df)
})
test_that("only overwrite existing table if explicitly requested", {
con <- DBI::dbConnect(RSQLite::SQLite())
on.exit(DBI::dbDisconnect(con))
DBI::dbWriteTable(con, "df", data.frame(x = 1:5))
expect_error(copy_to(con, data.frame(x = 1), name = "df"), "exists")
expect_silent(copy_to(con, data.frame(x = 1), name = "df", overwrite = TRUE))
})
test_that("can create a new table in non-default schema", {
con <- sqlite_con_with_aux()
on.exit(DBI::dbDisconnect(con))
df1 <- tibble(x = 1)
df2 <- tibble(x = 2)
db1 <- copy_to(con, df1, in_schema("aux", "df"), temporary = FALSE)
expect_equal(collect(db1), df1)
# And can overwrite
db2 <- copy_to(con, df2, in_schema("aux", "df"), temporary = FALSE, overwrite = TRUE)
expect_equal(collect(db2), df2)
})
test_that("df must be a local or remote table", {
con <- DBI::dbConnect(RSQLite::SQLite())
on.exit(DBI::dbDisconnect(con))
expect_snapshot(error = TRUE, copy_to(con, list(x = 1), name = "df"))
})
# copy_inline() -----------------------------------------------------------
test_that("can translate a table", {
con <- DBI::dbConnect(RSQLite::SQLite(), ":memory:")
on.exit(DBI::dbDisconnect(con), add = TRUE)
df <- tibble(
lgl = TRUE,
int = 1L,
dbl = 1.5,
chr = "a",
date = as.Date("2020-01-01", tz = "UTC"),
dtt = as.POSIXct("2020-01-01 01:23:45", tz = "UTC")
)
expect_snapshot(copy_inline(con, df) %>% remote_query())
expect_equal(
copy_inline(con, df) %>% collect(),
tibble(
lgl = 1L,
int = 1L,
dbl = 1.5,
chr = "a",
date = "2020-01-01",
dtt = "2020-01-01T01:23:45Z"
)
)
expect_equal(
copy_inline(con, tibble(date = as.Date(c("2020-01-01", "2020-01-02"), tz = "UTC"))) %>%
collect(),
tibble(date = c("2020-01-01", "2020-01-02"))
)
})
test_that("can translate 1-column tables", {
con <- DBI::dbConnect(RSQLite::SQLite(), ":memory:")
on.exit(DBI::dbDisconnect(con), add = TRUE)
expect_snapshot(
copy_inline(con, tibble(dbl = 1.5)) %>%
remote_query()
)
})
test_that("zero row table works", {
con <- DBI::dbConnect(RSQLite::SQLite(), ":memory:")
on.exit(DBI::dbDisconnect(con), add = TRUE)
expect_snapshot(
copy_inline(con, tibble(dbl = numeric(), chr = character())) %>%
remote_query()
)
expect_snapshot(
copy_inline(con, tibble(dbl = numeric())) %>%
remote_query()
)
})
test_that("types argument works", {
con <- DBI::dbConnect(RSQLite::SQLite(), ":memory:")
on.exit(DBI::dbDisconnect(con), add = TRUE)
df <- tibble(x = "1", y = 2L)
expect_equal(copy_inline(con, df) %>% collect(), df)
expect_equal(
copy_inline(con, df, types = c(x = "INTEGER", y = "TEXT")) %>% collect(),
tibble(x = 1L, y = "2")
)
})
test_that("checks inputs", {
con <- simulate_dbi()
expect_snapshot({
(expect_error(copy_inline(con, tibble())))
(expect_error(copy_inline(con, lazy_frame(a = 1))))
(expect_error(copy_inline(con, tibble(a = 1), types = c(b = "bigint"))))
(expect_error(copy_inline(con, tibble(a = 1), types = c(b = 1))))
})
})
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