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test_that("load_installed retrieves installed package", {
skip_if_not(file.exists(test_path("../../DESCRIPTION")))
env <- load_installed(test_path("../.."))
expect_identical(env, asNamespace("roxygen2"))
})
test_that("can load simple package with load_pkgload()", {
suppressMessages(env <- load_pkgload(test_path("testRbuildignore")))
expect_equal(env_get(env, "a"), 1)
})
test_that("can load simple package with load_source()", {
env <- load_source(test_path("testRbuildignore"))
expect_equal(env_get(env, "a"), 1)
})
# find_load_strategy ------------------------------------------------------
test_that("function returned as is", {
expect_equal(find_load_strategy(load_installed), load_installed)
})
test_that("look up string", {
expect_equal(find_load_strategy("installed"), load_installed)
expect_equal(find_load_strategy("pkgload"), load_pkgload)
expect_equal(find_load_strategy("source"), load_source)
expect_error(find_load_strategy("blahblahb"), "Unknown value")
})
test_that("NULL uses option", {
expect_equal(find_load_strategy(NULL, "installed"), load_installed)
})
test_that("informative errors for bad inputs", {
expect_error(find_load_strategy(1), "string or function")
expect_error(find_load_strategy(NULL, list()), "string")
})
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