tests/testthat/test-adbcsqlite-package.R

In adbcsqlite: 'Arrow' Database Connectivity ('ADBC') 'SQLite' Driver

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test_that("adbcsqlite() works", {
  expect_s3_class(adbcsqlite(), "adbc_driver")
})

test_that("default options can open a database and execute a query", {
  db <- adbcdrivermanager::adbc_database_init(adbcsqlite())
  expect_s3_class(db, "adbcsqlite_database")

  con <- adbcdrivermanager::adbc_connection_init(db)
  expect_s3_class(con, "adbcsqlite_connection")

  stmt <- adbcdrivermanager::adbc_statement_init(con)
  expect_s3_class(stmt, "adbcsqlite_statement")

  adbcdrivermanager::adbc_statement_set_sql_query(
    stmt,
    "CREATE TABLE crossfit (exercise TEXT, difficulty_level INTEGER)"
  )
  adbcdrivermanager::adbc_statement_execute_query(stmt)
  adbcdrivermanager::adbc_statement_release(stmt)

  stmt <- adbcdrivermanager::adbc_statement_init(con)
  adbcdrivermanager::adbc_statement_set_sql_query(
    stmt,
    "INSERT INTO crossfit values
      ('Push Ups', 3),
      ('Pull Ups', 5),
      ('Push Jerk', 7),
      ('Bar Muscle Up', 10);"
  )
  adbcdrivermanager::adbc_statement_execute_query(stmt)
  adbcdrivermanager::adbc_statement_release(stmt)

  stmt <- adbcdrivermanager::adbc_statement_init(con)
  adbcdrivermanager::adbc_statement_set_sql_query(
    stmt,
    "SELECT * from crossfit"
  )

  stream <- nanoarrow::nanoarrow_allocate_array_stream()
  adbcdrivermanager::adbc_statement_execute_query(stmt, stream)

  expect_identical(
    as.data.frame(stream),
    data.frame(
      exercise = c("Push Ups", "Pull Ups", "Push Jerk", "Bar Muscle Up"),
      difficulty_level = c(3, 5, 7, 10),
      stringsAsFactors = FALSE
    )
  )

  adbcdrivermanager::adbc_statement_release(stmt)
  adbcdrivermanager::adbc_connection_release(con)
  adbcdrivermanager::adbc_database_release(db)
})

test_that("read/write/execute SQL work with sqlite connections", {
  db <- adbc_database_init(adbcsqlite())
  con <- adbc_connection_init(db)

  df <- data.frame(x = as.double(1:10))
  expect_identical(adbcdrivermanager::write_adbc(df, con, "df"), df)

  stream <- adbcdrivermanager::read_adbc(con, "SELECT * from df")
  expect_identical(as.data.frame(stream), df)
  stream$release()

  expect_identical(
    adbcdrivermanager::execute_adbc(
      con,
      "UPDATE df SET x = x + ?",
      bind = data.frame(2)
    ),
    con
  )

  stream <- adbcdrivermanager::read_adbc(con, "SELECT * from df")
  expect_identical(as.data.frame(stream), data.frame(x = as.double(3:12)))

  stream$release()
  adbcdrivermanager::adbc_connection_release(con)
  adbcdrivermanager::adbc_database_release(db)
})

test_that("write_adbc() with temporary = TRUE works with sqlite databases", {
  skip_if_not(packageVersion("adbcdrivermanager") >= "0.6.0.9000")

  temp_db <- tempfile()
  on.exit(unlink(temp_db))

  db <- adbc_database_init(adbcsqlite(), uri = temp_db)
  con <- adbc_connection_init(db)

  df <- data.frame(x = as.double(1:10))
  adbcdrivermanager::write_adbc(df, con, "df", temporary = TRUE)

  stream <- adbcdrivermanager::read_adbc(con, "SELECT * from df")
  expect_identical(as.data.frame(stream), df)

  # Check that it was actually a temporary table
  adbcdrivermanager::adbc_connection_release(con)
  con <- adbc_connection_init(db)
  expect_error(
    adbcdrivermanager::read_adbc(con, "SELECT * from df"),
    class = "adbc_status_invalid_argument"
  )

  adbcdrivermanager::adbc_connection_release(con)
  adbcdrivermanager::adbc_database_release(db)
})