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## dbWriteTable test
##
## Assumes that
## a) PostgreSQL is running, and
## b) the current user can connect
## both of which are not viable for release but suitable while we test
##
## Dirk Eddelbuettel, 10 Sep 2009
## only run this if this env.var is set correctly
if (Sys.getenv("POSTGRES_USER") != "" & Sys.getenv("POSTGRES_HOST") != "" & Sys.getenv("POSTGRES_DATABASE") != "") {
## try to load our module and abort if this fails
stopifnot(require(RPostgreSQL))
stopifnot(require(datasets))
## load the PostgresSQL driver
drv <- dbDriver("PostgreSQL")
## create two independent connections
con1 <- dbConnect(drv,
user=Sys.getenv("POSTGRES_USER"),
password=Sys.getenv("POSTGRES_PASSWD"),
host=Sys.getenv("POSTGRES_HOST"),
dbname=Sys.getenv("POSTGRES_DATABASE"),
port=ifelse((p<-Sys.getenv("POSTGRES_PORT"))!="", p, 5432))
con2 <- dbConnect(drv,
user=Sys.getenv("POSTGRES_USER"),
password=Sys.getenv("POSTGRES_PASSWD"),
host=Sys.getenv("POSTGRES_HOST"),
dbname=Sys.getenv("POSTGRES_DATABASE"),
port=ifelse((p<-Sys.getenv("POSTGRES_PORT"))!="", p, 5432))
if (dbExistsTable(con1, "rockdata")) {
cat("Removing rockdata\n")
dbRemoveTable(con1, "rockdata")
}
cat("begin transaction in con1\n")
dbGetQuery(con1, "BEGIN TRANSACTION")
cat("create table rockdata in con1\n")
dbWriteTable(con1, "rockdata", rock)
if (dbExistsTable(con1, "rockdata")) {
cat("PASS rockdata is visible through con1\n")
}else{
cat("FAIL rockdata is invisible through con1\n")
}
if (dbExistsTable(con2, "rockdata")) {
cat("FAIL rockdata is visible through con2\n")
}else{
cat("PASS rockdata is invisible through con2\n")
}
cat("commit in con1\n")
dbCommit(con1)
if (dbExistsTable(con2, "rockdata")) {
cat("PASS rockdata is visible through con2\n")
}else{
cat("FAIL rockdata is invisible through con2\n")
}
cat("remove the table from con1\n")
dbRemoveTable(con1, "rockdata")
if (dbExistsTable(con2, "rockdata")) {
cat("FAIL rockdata is visible through con2\n")
}else{
cat("PASS rockdata is invisible through con2\n")
}
cat("begin transaction in con1\n")
dbGetQuery(con1, "BEGIN TRANSACTION")
cat("create table rockdata in con1\n")
dbWriteTable(con1, "rockdata", rock)
if (dbExistsTable(con1, "rockdata")) {
cat("PASS rockdata is visible through con1\n")
}else{
cat("FAIL rockdata is invisible through con1\n")
}
cat("RollBack con1\n")
dbRollback(con1)
if (dbExistsTable(con1, "rockdata")) {
cat("FAIL rockdata is visible through con1\n")
}else{
cat("PASS rockdata is invisible through con1\n")
}
## and disconnect
dbDisconnect(con2)
dbDisconnect(con1)
}
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