tests/testthat/test-cran-rcpp.R

In jimhester/printr: Lookup R function definitions, including compiled code, S3 and S4 methods

context("cran-rcpp")

with_cran_package("tibble", {
  s <- NULL
  test_that("fetch_symbol_map", {
    s <<- as.source_type("tibble", "rcpp", "matrixToDataFrame")
    expect_equal(class(s), c("rcpp_cran", "rcpp", "cran"))

    s <<- fetch_symbol_map(s)
    expect_true(length(s$map_lines) > 1)

    expect_error(as.source_type("missing", "rcpp"), "no package 'missing' was found")
  })

  test_that("parse_symbol_map", {
    s <<- parse_symbol_map(s)
    expect_true(length(s$map) > 0)
  })

  test_that("source_files", {
    s <<- source_files(s)
    expect_equal(basename(s$src_files), "matrixToDataFrame.cpp")
  })

  test_that("fetch_source", {
    s <<- fetch_source(s, s$src_files[[1]])
    expect_true(length(s$src_lines) > 1)
  })

  test_that("parse_source", {
    s <<- parse_source(s)
    expect_true(length(s$fun_lines) > 1)

    expect_true(s$fun_start > 1)
    expect_true(s$fun_end > s$fun_start)
  })

  test_that("lookup_function", {
    res <- lookup_function("matrixToDataFrame", "rcpp", "tibble")

    expect_true(nchar(res$content) > 0)
    expect_equal(res$remote_type, "cran")
    expect_equal(res$type, "rcpp")
    expect_equal(res$language, "c++")

    expect_null(lookup_function("missing", "rcpp", "tibble"))
  })
})