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/*
* This file uses the Catch unit testing library, alongside
* testthat's simple bindings, to test a C++ function.
*
* For your own packages, ensure that your test files are
* placed within the `src/` folder, and that you include
* `LinkingTo: testthat` within your DESCRIPTION file.
*/
// All test files should include the <testthat.h>
// header file.
#include <testthat.h>
// Normally this would be a function from your package's
// compiled library -- you might instead just include a header
// file providing the definition, and let R CMD INSTALL
// handle building and linking.
int twoPlusTwo() {
return 2 + 2;
}
// Initialize a unit test context. This is similar to how you
// might begin an R test file with 'context()', expect the
// associated context should be wrapped in braced.
context("Sample unit tests") {
// The format for specifying tests is similar to that of
// testthat's R functions. Use 'test_that()' to define a
// unit test, and use 'expect_true()' and 'expect_false()'
// to test the desired conditions.
test_that("two plus two equals four") {
expect_true(twoPlusTwo() == 4);
}
}
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