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cppinc <- system.file("include", package="cpp11", mustWork=TRUE)
#Sys.setenv(PKG_CXXFLAGS = paste("-include", shQuote(cppinc)))
Sys.setenv(PKG_CXXFLAGS = paste0(Sys.getenv("PKG_CXXFLAGS"), " -I", shQuote(cppinc)))
test_that("cpp_source works with the `code` parameter", {
skip_on_os("solaris")
dll_info <- cpp_source(
code = '
#include "cpp11/integers.hpp"
[[cpp11::register]]
int num_odd(cpp11::integers x) {
int total = 0;
for (int val : x) {
if ((val % 2) == 1) {
++total;
}
}
return total;
}
', clean = TRUE)
on.exit(dyn.unload(dll_info[["path"]]))
expect_equal(num_odd(as.integer(c(1:10, 15, 23))), 7)
})
test_that("cpp_source works with the `file` parameter", {
skip_on_os("solaris")
tf <- tempfile(fileext = ".cpp")
writeLines(
"[[cpp11::register]]
bool always_true() {
return true;
}
", tf)
on.exit(unlink(tf))
dll_info <- cpp_source(tf, clean = TRUE, quiet = TRUE)
on.exit(dyn.unload(dll_info[["path"]]), add = TRUE)
expect_true(always_true())
})
test_that("cpp_source works with files called `cpp11.cpp`", {
skip_on_os("solaris")
tf <- file.path(tempdir(), "cpp11.cpp")
writeLines(
"[[cpp11::register]]
bool always_true() {
return true;
}
", tf)
on.exit(unlink(tf))
dll_info <- cpp_source(tf, clean = TRUE, quiet = TRUE)
on.exit(dyn.unload(dll_info[["path"]]), add = TRUE)
expect_true(always_true())
})
test_that("cpp_source returns original file name on error", {
expect_output(try(cpp_source(test_path("single_error.cpp"), clean = TRUE), silent = TRUE),
normalizePath(test_path("single_error.cpp"), winslash = "/"), fixed = TRUE)
#error generated for incorrect attributes is separate from compilation errors
expect_error(cpp_source(test_path("single_incorrect.cpp"), clean = TRUE),
normalizePath(test_path("single_incorrect.cpp"), winslash = "/"), fixed = TRUE)
})
test_that("cpp_source lets you set the C++ standard", {
skip_on_os("solaris")
skip_on_os("windows") # Older windows toolchains do not support C++14
tf <- tempfile(fileext = ".cpp")
writeLines(
'#include <string>
using namespace std::string_literals;
[[cpp11::register]]
std::string fun() {
auto str = "hello_world"s;
return str;
}
', tf)
on.exit(unlink(tf))
dll_info <- cpp_source(tf, clean = TRUE, quiet = TRUE, cxx_std = "CXX14")
on.exit(dyn.unload(dll_info[["path"]]), add = TRUE)
expect_equal(fun(), "hello_world")
})
test_that("generate_cpp_name works", {
expect_equal(
generate_cpp_name("foo.cpp"),
"foo.cpp"
)
expect_equal(
generate_cpp_name("foo.cpp", loaded_dlls = "foo"),
"foo_2.cpp"
)
expect_equal(
generate_cpp_name("foo.cpp", loaded_dlls = c("foo", "foo_2")),
"foo_3.cpp"
)
})
test_that("generate_include_paths handles paths with spaces", {
if (is_windows()) {
mockery::stub(generate_include_paths, "system.file", "C:\\a path with spaces\\cpp11")
expect_equal(generate_include_paths("cpp11"), "-I\"C:\\a path with spaces\\cpp11\"")
} else {
mockery::stub(generate_include_paths, "system.file", "/a path with spaces/cpp11")
expect_equal(generate_include_paths("cpp11"), "-I'/a path with spaces/cpp11'")
}
})
test_that("check_valid_attributes does not return an error if all registers are correct", {
expect_error_free(
cpp11::cpp_source(clean = TRUE, code = '#include <cpp11.hpp>
using namespace cpp11::literals;
[[cpp11::register]]
cpp11::list fn() {
cpp11::writable::list x;
x.push_back({"foo"_nm = 1});
return x;
}
[[cpp11::register]]
cpp11::list fn2() {
cpp11::writable::list x;
x.push_back({"foo"_nm = 1});
return x;
}'))
expect_error_free(
cpp11::cpp_source(clean = TRUE,
code = '#include <cpp11/R.hpp>
#include <RProgress.h>
[[cpp11::linking_to("progress")]]
[[cpp11::register]] void show_progress() {
RProgress::RProgress pb("Processing [:bar] ETA: :eta");
pb.tick(0);
for (int i = 0; i < 100; i++) {
usleep(2.0 / 100 * 1000000);
pb.tick();
}
}
')
)
})
test_that("check_valid_attributes returns an error if one or more registers is incorrect", {
expect_error(
cpp11::cpp_source(code = '#include <cpp11.hpp>
using namespace cpp11::literals;
[[cpp11::reg]]
cpp11::list fn() {
cpp11::writable::list x;
x.push_back({"foo"_nm = 1});
return x;
}
[[cpp11::register]]
cpp11::list fn2() {
cpp11::writable::list x;
x.push_back({"foo"_nm = 1});
return x;
}'))
expect_error(
cpp11::cpp_source(code = '#include <cpp11.hpp>
using namespace cpp11::literals;
[[cpp11::reg]]
cpp11::list fn() {
cpp11::writable::list x;
x.push_back({"foo"_nm = 1});
return x;
}'))
expect_error(
cpp11::cpp_source(code = '#include <cpp11.hpp>
using namespace cpp11::literals;
[[cpp11::reg]]
cpp11::list fn() {
cpp11::writable::list x;
x.push_back({"foo"_nm = 1});
return x;
}
[[cpp11::egister]]
cpp11::list fn2() {
cpp11::writable::list x;
x.push_back({"foo"_nm = 1});
return x;
}'))
expect_error(
cpp11::cpp_source(
code = '
#include <cpp11/R.hpp>
#include <RProgress.h>
[[cpp11::link_to("progress")]]
[[cpp11::register]] void show_progress() {
RProgress::RProgress pb("Processing [:bar] ETA: :eta");
pb.tick(0);
for (int i = 0; i < 100; i++) {
usleep(2.0 / 100 * 1000000);
pb.tick();
}
}
'))
})
test_that("cpp_source(d) functions work after sourcing file more than once", {
cpp11::cpp_source(test_path("single.cpp"), clean = TRUE)
expect_equal(foo(), 1)
cpp11::cpp_source(test_path("single.cpp"), clean = TRUE)
expect_equal(foo(), 1)
})
test_that("cpp_source fails informatively for nonexistent file", {
i_do_not_exist <- tempfile(pattern = "nope-", fileext = ".cpp")
expect_false(file.exists(i_do_not_exist))
expect_snapshot(
error = TRUE,
cpp_source(i_do_not_exist),
transform = ~ sub("^.+[.]cpp$", "{NON_EXISTENT_FILEPATH}", .x)
)
})
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