download drivers before running tests

DESCRIPTION

@@ -21,7 +21,8 @@ Imports:
 Suggests:
     knitr,
     testthat (>= 3.0.0),
-    RSQLite
+    RSQLite,
+    withr
 NeedsCompilation: no
 RoxygenNote: 7.1.1
 Config/testthat/edition: 3

tests/setup.R

@@ -0,0 +1,12 @@
+# Download the JDBC drivers used in the tests
+
+oldJarFolder <- Sys.getenv("DATABASECONNECTOR_JAR_FOLDER")
+Sys.setenv("DATABASECONNECTOR_JAR_FOLDER" = tempfile("jdbcDrivers"))
+downloadJdbcDrivers("postgresql")
+# downloadJdbcDrivers("sql server")
+# downloadJdbcDrivers("oracle")
+
+withr::defer({
+  unlink(Sys.getenv("DATABASECONNECTOR_JAR_FOLDER"), recursive = TRUE, force = TRUE)
+  Sys.setenv("DATABASECONNECTOR_JAR_FOLDER" = oldJarFolder)
+}, testthat::teardown_env())