context("Testing SNNRCE")
source("wine.R")
test_that(
desc = "snnrce works",
code = {
m <- snnrce(x = wine$xtrain, y = wine$ytrain)
expect_is(m, "snnrce")
p <- predict(m, wine$xitest)
expect_is(p, "factor")
expect_equal(length(p), length(wine$ytrain))
m <- snnrce(x = wine$dtrain, y = wine$ytrain, x.inst = FALSE)
expect_is(m, "snnrce")
p <- predict(m, wine$ditest[, m$instances.index])
expect_is(p, "factor")
expect_equal(length(p), length(wine$ytrain))
}
)
test_that(
desc = "prediction not fail when x is a vector",
code = {
m <- snnrce(x = wine$xtrain, y = wine$ytrain)
p <- predict(m, wine$xitest[1,])
expect_is(p, "factor")
expect_equal(length(p), 1)
}
)
test_that(
desc = "the model structure is correct",
code = {
m <- snnrce(x = wine$xtrain, y = wine$ytrain)
expect_equal(
names(m),
c("model", "instances.index", "classes", "x.inst", "dist", "xtrain")
)
m2 <- snnrce(x = wine$dtrain, y = wine$ytrain, x.inst = FALSE)
expect_equal(
names(m2),
c("model", "instances.index", "classes", "x.inst")
)
}
)
test_that(
desc = "x can be a data.frame",
code = {
expect_is(
snnrce(x = as.data.frame(wine$xtrain), y = wine$ytrain),
"snnrce"
)
}
)
test_that(
desc = "y can be a vector",
code = {
expect_is(
snnrce(x = wine$xtrain, y = as.vector(wine$ytrain)),
"snnrce"
)
}
)
test_that(
desc = "x.inst can be coerced to logical",
code = {
expect_is(
snnrce(x = wine$xtrain, y = wine$ytrain, x.inst = TRUE),
"snnrce"
)
expect_is(
snnrce(x = wine$xtrain, y = wine$ytrain, x.inst = 1),
"snnrce"
)
expect_error(
snnrce(x = wine$xtrain, y = wine$ytrain, x.inst = "a")
)
}
)
test_that(
desc = "relation between x and y is correct",
code = {
expect_error(
snnrce(x = wine$xtrain, y = wine$ytrain[-1])
)
expect_error(
snnrce(x = wine$xtrain[-1,], y = wine$ytrain)
)
}
)
test_that(
desc = "y has some labeled instances",
code = {
expect_error(
snnrce(x = wine$xtrain, y = rep(NA, length(wine$ytrain)))
)
}
)
test_that(
desc = "y has some unlabeled instances",
code = {
expect_error(
snnrce(x = wine$xtrain, y = rep(1, length(wine$ytrain)))
)
}
)
test_that(
desc = "x is a square matrix when x.inst is FALSE",
code = {
expect_error(
snnrce(x = wine$dtrain[-1,], y = wine$ytrain, x.inst = FALSE)
)
expect_is(
snnrce(x = wine$dtrain, y = wine$ytrain, x.inst = FALSE),
"snnrce"
)
}
)
test_that(
desc = "alpha is a value between 0 and 1",
code = {
expect_error(
snnrce(x = wine$xtrain, y = wine$ytrain, alpha = -0.5)
)
expect_error(
snnrce(x = wine$xtrain, y = wine$ytrain, alpha = 1.5)
)
expect_is(
snnrce(x = wine$dtrain, y = wine$ytrain, alpha = 0.15),
"snnrce"
)
}
)
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