Nothing
library(catR, quietly = TRUE)
context("expectedPV")
load("cat_objects.Rdata")
test_that("ltm expectedPV calculates correctly", {
ltm_cat@estimation <- "EAP"
ltm_cat@answers[1:5] <- c(0, 1, 0, 0, 1)
package_epv <- expectedPV(ltm_cat, item = 6)
catR_epv <- EPV(itemBank = it_ltm, item = 6, x = ltm_cat@answers[1:5],
theta = estimateTheta(ltm_cat), it.given = it_ltm[1:5, ])
expect_equal(round(package_epv, 5), round(catR_epv, 5))
})
test_that("grm expectedPV calculates correctly", {
grm_cat@estimation <- "EAP"
grm_cat@answers[1:5] <- c(4, 5, 2, 4, 4)
package_epv <- expectedPV(grm_cat, item = 6)
catR_epv <- EPV(itemBank = it_grm, item = 6, x = c(grm_cat@answers[1:5]) - 1,
model = "GRM", theta = estimateTheta(grm_cat), it.given = it_grm[1:5, ])
expect_equal(round(package_epv, 3), round(catR_epv, 3))
})
test_that("gpcm expectedPV calculates correctly", {
gpcm_cat@estimation <- "EAP"
gpcm_cat@answers[1:5] <- c(4, 5, 2, 4, 4)
package_epv <- expectedPV(gpcm_cat, item = 6)
catR_epv <- EPV(itemBank = it_gpcm, item = 6, x = c(gpcm_cat@answers[1:5]) - 1,
model = "GPCM", theta = estimateTheta(gpcm_cat), it.given = it_gpcm[1:5, ])
expect_equal(round(package_epv, 2), round(catR_epv, 2))
})
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