```
context("create_next_generation")
# test data
Y <- as.matrix(mtcars$mpg)
X <- as.matrix(mtcars[2:ncol(mtcars)])
dim(X)
# get input data
C <- dim(X)[2] # number genes
P <- 2* C # number of chromosomes
# generate chromosomes to test
geneSample <- sample(c(0, 1),
replace = TRUE,
size = ceiling(1.2 * C * P))
x <- seq_along(geneSample)
firstGen <- split(geneSample, ceiling(x / C))
generation_t0 <- matrix(unlist(unique(firstGen)[1:P]),
ncol = C, byrow = TRUE)
generation_t0 <- generation_t0[apply(generation_t0, 1,
function(x) !all(x == 0)), ]
obj_fun_output <- evaluate_fitness(generation_t0, Y, X,
family = "gaussian",
nCores = 1, minimize = TRUE,
objective_function = stats::AIC,
rank_objective_function)
# evaluation
test_that('test that create_next_generation works with pCrossover = 1',
{test <- create_next_generation(generation_t0, obj_fun_output,
select_parents,
crossover_method = "method1",
crossover_parents,
pCrossover = 1,
mutate_child,
mutation_rate = 0.01)
expect_equal(dim(test), c(20,10))
expect_is(test, "matrix")
expect_type(test, "integer")
})
# another one with different probability
test_that('test that create_next_generation works with pCrossover != 1',
{expect_error(create_next_generation(generation_t0, obj_fun_output,
select_parents,
crossover_method,
crossover_parents,
pCrossover = 0.8,
mutate_child,
mutation_rate = 0.01))
})
```

Embedding an R snippet on your website

Add the following code to your website.

For more information on customizing the embed code, read Embedding Snippets.