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Diffstat (limited to 'spec/ruby/core/process/wait_spec.rb')
-rw-r--r-- | spec/ruby/core/process/wait_spec.rb | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/spec/ruby/core/process/wait_spec.rb b/spec/ruby/core/process/wait_spec.rb new file mode 100644 index 0000000000..8111621695 --- /dev/null +++ b/spec/ruby/core/process/wait_spec.rb @@ -0,0 +1,90 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/common', __FILE__) + +describe "Process.wait" do + ProcessSpecs.use_system_ruby(self) + + before :all do + begin + leaked = Process.waitall + puts "leaked before wait specs: #{leaked}" unless leaked.empty? + rescue NotImplementedError + end + end + + it "raises an Errno::ECHILD if there are no child processes" do + lambda { Process.wait }.should raise_error(Errno::ECHILD) + end + + platform_is_not :windows do + it "returns its childs pid" do + pid = Process.spawn(ruby_cmd('exit')) + Process.wait.should == pid + end + + it "sets $? to a Process::Status" do + pid = Process.spawn(ruby_cmd('exit')) + Process.wait + $?.should be_kind_of(Process::Status) + $?.pid.should == pid + end + + it "waits for any child process if no pid is given" do + pid = Process.spawn(ruby_cmd('exit')) + Process.wait.should == pid + lambda { Process.kill(0, pid) }.should raise_error(Errno::ESRCH) + end + + it "waits for a specific child if a pid is given" do + pid1 = Process.spawn(ruby_cmd('exit')) + pid2 = Process.spawn(ruby_cmd('exit')) + Process.wait(pid2).should == pid2 + Process.wait(pid1).should == pid1 + lambda { Process.kill(0, pid1) }.should raise_error(Errno::ESRCH) + lambda { Process.kill(0, pid2) }.should raise_error(Errno::ESRCH) + end + + it "coerces the pid to an Integer" do + pid1 = Process.spawn(ruby_cmd('exit')) + Process.wait(mock_int(pid1)).should == pid1 + lambda { Process.kill(0, pid1) }.should raise_error(Errno::ESRCH) + end + + # This spec is probably system-dependent. + it "waits for a child whose process group ID is that of the calling process" do + pid1 = Process.spawn(ruby_cmd('exit'), pgroup: true) + pid2 = Process.spawn(ruby_cmd('exit')) + + Process.wait(0).should == pid2 + Process.wait.should == pid1 + end + + # This spec is probably system-dependent. + it "doesn't block if no child is available when WNOHANG is used" do + read, write = IO.pipe + pid = Process.fork do + read.close + Signal.trap("TERM") { Process.exit! } + write << 1 + write.close + sleep + end + + Process.wait(pid, Process::WNOHANG).should be_nil + + # wait for the child to setup its TERM handler + write.close + read.read(1) + read.close + + Process.kill("TERM", pid) + Process.wait.should == pid + end + + it "always accepts flags=0" do + pid = Process.spawn(ruby_cmd('exit')) + Process.wait(-1, 0).should == pid + lambda { Process.kill(0, pid) }.should raise_error(Errno::ESRCH) + end + end +end |