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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 integer, floatcolumn float);")
i <- as.integer(10)
j <- as.numeric(56.6)
sql <- paste("insert into tempostgrestable ",
"values (",i, "," ,j ,") ", sep="")
res <- dbGetQuery(con, sql)
dat <- dbReadTable(con, "tempostgrestable")
dbRemoveTable(con, "tempostgrestable")
cat("Read Numeric values\n")
## now test the types of the colums we got
stopifnot( class(dat[,1]) == "integer" )
stopifnot( class(dat[,2]) == "numeric" )
cat("GOOD -- all numeric types are as expected\n")
## and test the values
stopifnot( identical( dat[1,1], i))
stopifnot( identical( dat[1,2], j))
cat("GOOD -- all numeric values are as expected\n")
## Test the logical mapping
if (dbExistsTable(con, "testlogical"))
dbRemoveTable(con, "testlogical")
dbGetQuery(con,"create table testlogical (col1 boolean, col2 boolean)")
i <- as.logical(TRUE)
j <- as.logical(FALSE)
sql <- paste("insert into testlogical ",
"values (",i, "," ,j ,") ", sep="")
res <- dbGetQuery(con, sql);
dat <- dbReadTable(con, "testlogical")
dbRemoveTable(con, "testlogical")
cat("Read Logical values\n")
## now test the types of the colums we got
stopifnot( class(dat[,1]) == "logical" )
stopifnot( class(dat[,2]) == "logical" )
cat("GOOD -- all logical types are as expected\n")
## and test the values
stopifnot( identical( dat[1,1], i))
stopifnot( identical( dat[1,2], j))
cat("GOOD -- all logical values are as expected\n")
## Test the character mapping
if (dbExistsTable(con, "testchar"))
dbRemoveTable(con, "testchar")
dbGetQuery(con,"create table testchar (code char(3),city varchar(20),country text);")
i <- as.character("IN")
j <- as.character("Hyderabad")
k <- as.character("India")
sql <- paste("insert into testchar ",
"values ('",i,"' , '",j ,"' , '",k,"') ", sep="")
res <- dbGetQuery(con, sql);
dat <- dbReadTable(con, "testchar")
cat("Read Character values\n")
## now test the types of the colums we got
stopifnot( class(dat[,1]) == "character" )
stopifnot( class(dat[,2]) == "character" )
stopifnot( class(dat[,3]) == "character" )
cat("GOOD -- all character types are as expected\n")
## and test the values
##stopifnot( identical( dat[1,1], i))
stopifnot( identical( dat[1,2], j))
stopifnot( identical( dat[1,3], k))
cat("GOOD -- all character values are as expected\n")
dbRemoveTable(con, "testchar")
dbRemoveTable(con, "tempostgrestable")
dbDisconnect(con)
dbUnloadDriver(drv)
cat("DONE\n")
}
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