tests/testthat/test-libPaths_behaviour.R

In multiversion: Version Controlled Package Manager

# Check if libPaths change in unexpected ways

with_safe_package_tester({

    test_that(desc = '.libPaths must remain unchanged by default', {

        old_paths <- .libPaths()
        lib.load(package.b, quietly = TRUE)
        expect_equal(old_paths, .libPaths())

})
})

with_safe_package_tester({

    test_that(desc = '.libPaths must remain unchanged in dry_run to', {

        old_paths <- .libPaths()
        lib.load(package.b, quietly = TRUE, dry_run = TRUE)
        expect_equal(old_paths, .libPaths())
})
})


with_safe_package_tester({

    test_that(desc = '.libPaths are updated with appendLibPaths', {

        old_paths <- .libPaths()
        lib.load(package.b, quietly = TRUE, appendLibPaths = TRUE, dry_run = TRUE)
        new_paths <- .libPaths()

        # It should result in two NEW paths:
        # [1] ".../multiversion/tests/test_library/package.c/15.2.8"
        # [2] ".../multiversion/tests/test_library/package.b/1.0.0"
        expect_true(all(basename(setdiff(new_paths, old_paths)) %in% c('15.2.8', '1.0.0')))
})
})


with_safe_package_tester({

    test_that(desc = "package.e must be updated when loading package.a 0.3.0 (e == 1.5) then package.f (e > 1.6.0)", {

        old_paths <- .libPaths()
        lib.load(package.a = '0.3.0', appendLibPaths = TRUE, quietly = TRUE)
        new_paths <- .libPaths()

        # It should result in three NEW paths:
        # [2] ".../multiversion/tests/test_library/package.e/1.7.0"
        # [3] ".../multiversion/tests/test_library/package.f/1.0.0"
        # [4] ".../multiversion/tests/test_library/package.a/0.3.0"
        expect_true(all(basename(setdiff(new_paths, old_paths)) %in% c('1.7.0', '1.0.0', '0.3.0')))

})
})