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require "spec_helper"
RSpec.describe Aruba::Processes::SpawnProcess do
subject(:process) do
described_class.new(command_line, exit_timeout, io_wait, working_directory)
end
include_context "uses aruba API"
let(:command_line) { 'echo "yo"' }
let(:exit_timeout) { 30 }
let(:io_wait) { 1 }
let(:working_directory) { @aruba.expand_path(".") }
describe "#stdout" do
before do
process.start
process.stop
end
context "when invoked once" do
it { expect(process.stdout.chomp).to eq "yo" }
end
context "when invoked twice" do
it { 2.times { expect(process.stdout.chomp).to eq "yo" } }
end
end
describe "#stderr" do
let(:command_line) { "sh -c \"echo 'yo' >&2\"" }
before do
process.start
process.stop
end
it "returns the output of the process on stderr" do
expect(process).not_to be_timed_out
expect(process.stderr.chomp).to eq "yo"
end
it "returns the same result when invoked a second time" do
2.times { expect(process.stderr.chomp).to eq "yo" }
end
end
describe "#stop" do
before { process.start }
context "when stopped successfully" do
it { expect { process.stop }.not_to raise_error }
it "makes the process stopped" do
process.stop
expect(process).to be_stopped
end
end
end
describe "#start" do
context "when process run succeeds" do
it { expect { process.start }.not_to raise_error }
it "makes the process started" do
process.start
expect(process).to be_started
end
end
context "when process run fails" do
let(:command_line) { "does_not_exists" }
it { expect { process.start }.to raise_error Aruba::LaunchError }
end
context "when on unix" do
let(:child) { instance_double(ChildProcess::AbstractProcess).as_null_object }
let(:io) { instance_double(ChildProcess::AbstractIO).as_null_object }
let(:command_line) { "foo" }
let(:command) { "foo" }
let(:command_path) { "/bar/foo" }
before do
allow(Aruba.platform).to receive(:command_string)
.and_return Aruba::Platforms::UnixCommandString
allow(Aruba.platform)
.to receive(:which).with(command, anything).and_return(command_path)
allow(ChildProcess).to receive(:build).and_return(child)
allow(child).to receive(:io).and_return(io)
allow(child).to receive(:environment).and_return({})
end
context "with a childprocess launch error" do
before do
allow(child).to receive(:start).and_raise(ChildProcess::LaunchError, "Foobar!")
end
it "reraises LaunchError as Aruba's LaunchError" do
expect { process.start }
.to raise_error(Aruba::LaunchError, "It tried to start #{command}. Foobar!")
end
end
context "with a command with a space in the path" do
let(:command_path) { "/path with space/foo" }
before do
allow(Aruba.platform).to receive(:command_string)
.and_return Aruba::Platforms::UnixCommandString
allow(Aruba.platform)
.to receive(:which).with(command, anything).and_return(command_path)
allow(ChildProcess).to receive(:build).with(command_path).and_return(child)
allow(child).to receive(:io).and_return io
allow(child).to receive(:environment).and_return({})
end
it "passes the command path as a single string to ChildProcess.build" do
process.start
expect(ChildProcess).to have_received(:build).with(command_path)
end
end
context "with a command with arguments" do
let(:command_line) { 'foo -x "bar baz"' }
it "passes the command and arguments as separate items to ChildProcess.build" do
process.start
expect(ChildProcess).to have_received(:build)
.with(command_path, "-x", "bar baz")
end
end
end
context "when on windows" do
let(:child) { instance_double(ChildProcess::AbstractProcess).as_null_object }
let(:io) { instance_double(ChildProcess::AbstractIO).as_null_object }
let(:command_line) { "foo" }
let(:command) { "foo" }
let(:cmd_path) { 'C:\Bar\cmd.exe' }
let(:command_path) { 'D:\Foo\foo' }
before do
allow(Aruba.platform).to receive(:command_string)
.and_return Aruba::Platforms::WindowsCommandString
allow(Aruba.platform).to receive(:which).with("cmd.exe").and_return(cmd_path)
allow(Aruba.platform)
.to receive(:which).with(command, anything).and_return(command_path)
allow(ChildProcess).to receive(:build).and_return(child)
allow(child).to receive(:io).and_return(io)
allow(child).to receive(:environment).and_return({})
end
context "with a childprocess launch error" do
before do
allow(child).to receive(:start).and_raise(ChildProcess::LaunchError, "Foobar!")
end
it "reraises LaunchError as Aruba's LaunchError" do
expect { process.start }
.to raise_error(Aruba::LaunchError, "It tried to start #{command}. Foobar!")
end
end
context "with a command without a space in the path" do
it "passes the command and shell paths as single strings to ChildProcess.build" do
process.start
expect(ChildProcess).to have_received(:build).with(cmd_path, "/c", command_path)
end
end
context "with a command with a space in the path" do
let(:command_path) { 'D:\Bar Baz\foo' }
it "escapes the spaces using excessive double quotes" do
process.start
expect(ChildProcess)
.to have_received(:build).with(cmd_path, "/c", 'D:\Bar""" """Baz\foo')
end
end
context "with a command with arguments" do
let(:command_line) { "foo -x 'bar \"baz\"'" }
it "passes the command and arguments as one string with escaped quotes" do
process.start
expect(ChildProcess).to have_received(:build)
.with(cmd_path, "/c", "#{command_path} -x \"bar \"\"\"baz\"\"\"\"")
end
end
end
end
describe "#send_signal" do
let(:signal) { Gem.win_platform? ? 9 : "KILL" }
context "with a command that is running" do
let(:cmd) { "bin/test-cli" }
let(:command_line) { "bash bin/test-cli" }
before do
@aruba.write_file cmd, <<~BASH
#!/usr/bin/env bash
sleep 5
echo "Success"
exit 0
BASH
end
it "sends the given signal to the command" do
process.start
process.send_signal signal
process.stop
expect(process).not_to have_output "Success"
end
end
context "with a command that has stopped" do
it "raises an error" do
process.start
process.stop
expect { process.send_signal signal }
.to raise_error Aruba::CommandAlreadyStoppedError
end
end
end
describe "#command" do
let(:command_line) { "ruby -e 'warn \"yo\"'" }
it "returns the first item of the command line" do
expect(process.command).to eq "ruby"
end
end
describe "#arguments" do
let(:command_line) { "ruby -e 'warn \"yo\"'" }
it "handles arguments delimited with quotes" do
expect(process.arguments).to eq ["-e", 'warn "yo"']
end
end
end
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