Nothing
# Test `Bar` class.
test_that("'Bar' class cannot be instantiated", {
# Create a mock object that has the `Service` class.
assign("object", "Mock Bar", envir = environment())
# Assign a class to the mock service object.
class(object) <- "Bar"
# Expect an error upon instantiation.
expect_error(Bar$new(), as_text(Exception$abstract_class_not_instantiable(object)))
})
test_that("'Bar' abstract class methods throw errors", {
# Create an improper bar implementation.
bar <- BarImplementation$new()
# Expect an error when calling the `create` method.
expect_error(bar$create(), as_text(Exception$method_not_implemented()))
# Expect an error when calling the `update` method.
expect_error(bar$update(), as_text(Exception$method_not_implemented()))
# Expect an error when calling the `terminate` method.
expect_error(bar$terminate(), as_text(Exception$method_not_implemented()))
})
test_that("'Bar' abstract class fields have correct default values", {
# Create an improper bar implementation.
bar <- BarImplementation$new()
# Expect the correct default value for the `engine` field.
expect_null(bar$engine)
})
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