Checks whether code in teal_data object reproduces the stored objects.
Details
If objects created by code in the @code slot of x are all_equal to the
contents of the environment (@.xData slot),
the function updates the @verified slot to TRUE in the returned teal_data object.
Once verified, the slot will always be set to TRUE.
If the @code fails to recreate objects in teal_data's environment, an
error is raised.
Examples
tdata1 <- teal_data()
tdata1 <- within(tdata1, {
a <- 1
b <- a^5
c <- list(x = 2)
})
verify(tdata1)
#> ✅︎ verified teal_data object
#> <environment: 0x56354ab50f10> [L]
#> Parent: <environment: devtools_shims>
#> Bindings:
#> • a: <dbl> [L]
#> • b: <dbl> [L]
#> • c: <named list> [L]
tdata2 <- teal_data(x1 = iris, code = "x1 <- iris")
verify(tdata2)
#> ✅︎ verified teal_data object
#> <environment: 0x5635516f40b8> [L]
#> Parent: <environment: devtools_shims>
#> Bindings:
#> • x1: <df[,5]> [L]
verify(tdata2)@verified
#> [1] TRUE
tdata2@verified
#> [1] FALSE
tdata3 <- teal_data()
tdata3 <- within(tdata3, {
stop("error")
})
try(verify(tdata3)) # fails
#> Error : error
#> when evaluating qenv code:
#> stop("error")
a <- 1
b <- a + 2
c <- list(x = 2)
d <- 5
tdata4 <- teal_data(
a = a, b = b, c = c, d = d,
code = "a <- 1
b <- a
c <- list(x = 2)
e <- 1"
)
tdata4
#> ✖ unverified teal_data object
#> <environment: 0x56354ffed5e0> [L]
#> Parent: <environment: devtools_shims>
#> Bindings:
#> • a: <dbl> [L]
#> • b: <dbl> [L]
#> • c: <named list> [L]
#> • d: <dbl> [L]
if (FALSE) { # \dontrun{
verify(tdata4) # fails
} # }