context("temp_env")
describe("temp_env() creation and retrieval", {
tenv <- temp_env()
it("must be an environment attached to the search path", {
expect_is(tenv, "environment")
expect_false(is.na(match("SciViews:TempEnv", search())))
})
it("always provides the same environment on further calls", {
expect_identical(tenv, temp_env())
})
})
describe("Variables management in temp_env()", {
temp_var <- "test_variable___"
it("indicates when temporary variables are in temp_env() or not", {
expect_false(exists_temp(temp_var))
assign_temp(temp_var, 1:3)
expect_true(exists_temp(temp_var))
expect_identical(get_temp(temp_var), 1:3)
expect_error(exists_temp(), "argument \"x\" is missing, with no default", fixed = TRUE)
})
it("does replace or not existing temporary variables depending on replace.existing =", {
assign_temp(temp_var, 4:5, replace.existing = FALSE)
expect_identical(get_temp(temp_var), 1:3)
assign_temp(temp_var, 4:5, replace.existing = TRUE)
expect_identical(get_temp(temp_var), 4:5)
})
it("removes temporary variables from temp_env(), and proceed silently if variable not found", {
expect_true(delete_temp(temp_var))
expect_false(exists_temp(temp_var))
expect_false(delete_temp("non_existing_variable___"))
})
})
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