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# frozen_string_literal: true
require_relative "helper"
require "rubygems/ext"
require "open3"
class TestGemExtCargoBuilder < Gem::TestCase
def setup
super
@rust_envs = {
"CARGO_HOME" => ENV.fetch("CARGO_HOME", File.join(@orig_env["HOME"], ".cargo")),
"RUSTUP_HOME" => ENV.fetch("RUSTUP_HOME", File.join(@orig_env["HOME"], ".rustup")),
}
end
def setup_rust_gem(name)
@ext = File.join(@tempdir, "ext")
@dest_path = File.join(@tempdir, "prefix")
@fixture_dir = Pathname.new(File.expand_path("test_gem_ext_cargo_builder/#{name}/", __dir__))
FileUtils.mkdir_p @dest_path
FileUtils.cp_r(@fixture_dir.to_s, @ext)
end
def test_build_cdylib
skip_unsupported_platforms!
setup_rust_gem "rust_ruby_example"
output = []
Dir.chdir @ext do
ENV.update(@rust_envs)
builder = Gem::Ext::CargoBuilder.new
builder.build "Cargo.toml", @dest_path, output
end
output = output.join "\n"
bundle = File.join(@dest_path, "rust_ruby_example.#{RbConfig::CONFIG["DLEXT"]}")
assert_match(/Finished/, output)
assert_match(/release/, output)
assert_ffi_handle bundle, "Init_rust_ruby_example"
rescue StandardError => e
pp output if output
raise(e)
end
def test_rubygems_cfg_passed_to_rustc
skip_unsupported_platforms!
setup_rust_gem "rust_ruby_example"
version_slug = Gem::VERSION.tr(".", "_")
output = []
replace_in_rust_file("src/lib.rs", "rubygems_x_x_x", "rubygems_#{version_slug}")
Dir.chdir @ext do
ENV.update(@rust_envs)
builder = Gem::Ext::CargoBuilder.new
builder.build "Cargo.toml", @dest_path, output
end
output = output.join "\n"
bundle = File.join(@dest_path, "rust_ruby_example.#{RbConfig::CONFIG["DLEXT"]}")
assert_ffi_handle bundle, "hello_from_rubygems"
assert_ffi_handle bundle, "hello_from_rubygems_version"
refute_ffi_handle bundle, "should_never_exist"
rescue StandardError => e
pp output if output
raise(e)
end
def test_build_fail
skip_unsupported_platforms!
setup_rust_gem "rust_ruby_example"
FileUtils.rm(File.join(@ext, "src/lib.rs"))
error = assert_raise(Gem::InstallError) do
Dir.chdir @ext do
ENV.update(@rust_envs)
builder = Gem::Ext::CargoBuilder.new
builder.build "Cargo.toml", @dest_path, []
end
end
assert_match(/cargo\s.*\sfailed/, error.message)
end
def test_full_integration
skip_unsupported_platforms!
setup_rust_gem "rust_ruby_example"
require "open3"
Dir.chdir @ext do
require "tmpdir"
env_for_subprocess = @rust_envs.merge("GEM_HOME" => Gem.paths.home)
gem = [env_for_subprocess, *ruby_with_rubygems_in_load_path, File.expand_path("../../exe/gem", __dir__)]
Dir.mktmpdir("rust_ruby_example") do |dir|
built_gem = File.expand_path(File.join(dir, "rust_ruby_example.gem"))
Open3.capture2e(*gem, "build", "rust_ruby_example.gemspec", "--output", built_gem)
Open3.capture2e(*gem, "install", "--verbose", "--local", built_gem, *ARGV)
stdout_and_stderr_str, status = Open3.capture2e(env_for_subprocess, *ruby_with_rubygems_in_load_path, "-rrust_ruby_example", "-e", "puts 'Result: ' + RustRubyExample.reverse('hello world')")
assert status.success?, stdout_and_stderr_str
assert_match "Result: #{"hello world".reverse}", stdout_and_stderr_str
end
end
end
def test_custom_name
skip_unsupported_platforms!
setup_rust_gem "custom_name"
Dir.chdir @ext do
require "tmpdir"
env_for_subprocess = @rust_envs.merge("GEM_HOME" => Gem.paths.home)
gem = [env_for_subprocess, *ruby_with_rubygems_in_load_path, File.expand_path("../../exe/gem", __dir__)]
Dir.mktmpdir("custom_name") do |dir|
built_gem = File.expand_path(File.join(dir, "custom_name.gem"))
Open3.capture2e(*gem, "build", "custom_name.gemspec", "--output", built_gem)
Open3.capture2e(*gem, "install", "--verbose", "--local", built_gem, *ARGV)
end
stdout_and_stderr_str, status = Open3.capture2e(env_for_subprocess, *ruby_with_rubygems_in_load_path, "-rcustom_name", "-e", "puts 'Result: ' + CustomName.say_hello")
assert status.success?, stdout_and_stderr_str
assert_match "Result: Hello world!", stdout_and_stderr_str
end
end
private
def skip_unsupported_platforms!
pend "jruby not supported" if Gem.java_platform?
pend "truffleruby not supported (yet)" if RUBY_ENGINE == "truffleruby"
system(@rust_envs, "cargo", "-V", out: IO::NULL, err: [:child, :out])
pend "cargo not present" unless $?.success?
pend "ruby.h is not provided by ruby repo" if ruby_repo?
pend "rust toolchain of mingw is broken" if mingw_windows?
end
def assert_ffi_handle(bundle, name)
require "fiddle"
dylib_handle = Fiddle.dlopen bundle
assert_nothing_raised { dylib_handle[name] }
ensure
dylib_handle&.close
end
def refute_ffi_handle(bundle, name)
require "fiddle"
dylib_handle = Fiddle.dlopen bundle
assert_raise { dylib_handle[name] }
ensure
dylib_handle&.close
end
def replace_in_rust_file(name, from, to)
content = @fixture_dir.join(name).read.gsub(from, to)
File.write(File.join(@ext, name), content)
end
end
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