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## Test of data types, based on earlier version in inst/devTests
##
## Dirk Eddelbuettel, 21 Oct 2008
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))
## load the PostgresSQL driver
drv <- dbDriver("PostgreSQL")
## can't print result as it contains process id which changes print(summary(drv))
## connect to the default db
con <- 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(con, "tempostgrestable"))
dbRemoveTable(con, "tempostgrestable")
## Test the numeric mapping
dbGetQuery(con, "create table tempostgrestable (intcolumn date, floatcolumn timestamp with time zone);")
sql <- paste("insert into tempostgrestable ",
"values ('2011-03-07', '2011-03-07 16:30:39') ")
res <- dbGetQuery(con, sql)
dat <- dbReadTable(con, "tempostgrestable")
dbRemoveTable(con, "tempostgrestable")
cat("Read Date and TIMESTAMP values\n")
## now test the types of the colums we got
if( class(dat[1,1]) == "Date" ){
cat("PASS -- Date type is as expected\n")
}else{
cat("FAIL -- Date type is other than Date: ")
cat(class(dat[1,1]))
cat("\n")
}
if( class(dat[1,2])[1] == "POSIXct" ){
cat("PASS -- TIMESTAMP is received as POSIXct\n")
}else{
cat("FAIL -- TIMESTAMP is other than POSIXct: ")
cat(class(dat[1,2]))
cat("\n")
}
dbWriteTable(con, "tempostgrestable2", dat)
dat2 <- dbReadTable(con, "tempostgrestable2")
dbRemoveTable(con, "tempostgrestable2")
cat("Check that read after write gets the same data types\n")
## now test the types of the colums we got
if( class(dat2[1,1]) == "Date" ){
cat("PASS -- Date type is as expected\n")
}else{
cat("FAIL -- Date type is other than Date: ")
cat(class(dat2[1,1]))
cat("\n")
}
if( class(dat2[1,2])[1] == "POSIXct" ){
cat("PASS -- TIMESTAMP is received as POSIXct\n")
}else{
cat("FAIL -- TIMESTAMP is other than POSIXct: ")
cat(class(dat2[1,2]))
cat("\n")
}
dbDisconnect(con)
dbUnloadDriver(drv)
cat("DONE\n")
}
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