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#######################################################################
# sys_proctable_all_spec.rb
#
# Test suite for methods common to all platforms. Generally speaking
# you should run these specs using the 'rake spec' task.
#######################################################################
require 'spec_helper'
RSpec.describe 'common' do
let(:windows) { File::ALT_SEPARATOR }
before(:all) do
@pid = Process.pid
end
context 'constants' do
it 'has a VERSION constant set to the expected value' do
expect(Sys::ProcTable::VERSION).to eql('1.3.0')
expect(Sys::ProcTable::VERSION).to be_frozen
end
it 'defines a custom error class' do
expect{ Sys::ProcTable::Error }.not_to raise_error
expect(Sys::ProcTable::Error.new).to be_kind_of(StandardError)
end
end
context 'fields' do
it 'has a fields singleton method' do
expect(Sys::ProcTable).to respond_to(:fields)
end
it 'returns the expected data type for the fields singleton method' do
expect(Sys::ProcTable.fields).to be_kind_of(Array)
expect(Sys::ProcTable.fields.first).to be_kind_of(String)
end
end
context 'ps' do
it 'defines a ps singleton method' do
expect(Sys::ProcTable).to respond_to(:ps)
end
it 'allows a pid option as an argument' do
expect{ Sys::ProcTable.ps(:pid => 0) }.not_to raise_error
end
it 'allows the pid to be nil' do
expect{ Sys::ProcTable.ps(:pid => nil) }.not_to raise_error
expect(Sys::ProcTable.ps(:pid => nil)).to be_kind_of(Array)
end
it 'returns expected results with no arguments' do
expect(Sys::ProcTable.ps).to be_kind_of(Array)
end
it 'returns expected results with a pid argument' do
expect(Sys::ProcTable.ps(:pid => @pid)).to be_kind_of(Struct::ProcTableStruct)
end
it 'returns nil if the process does not exist' do
expect(Sys::ProcTable.ps(:pid => 999999999)).to be_nil
end
it 'returns nil in block form whether or not a pid was provided' do
expect(Sys::ProcTable.ps{}).to be_nil
expect(Sys::ProcTable.ps(:pid => 999999999){}).to be_nil
end
it 'returns frozen structs' do
expect(Sys::ProcTable.ps.first.frozen?).to be(true)
end
it 'expects a numeric pid argument if present' do
expect{ Sys::ProcTable.ps(:pid => 'vim') }.to raise_error(TypeError)
end
it 'accepts keyword arguments only' do
expect{ Sys::ProcTable.ps(0, 'localhost') }.to raise_error(ArgumentError)
end
it 'disables the traditional constructor' do
expect{ Sys::ProcTable.new }.to raise_error(NoMethodError)
end
it 'works within a thread' do
expect{ Thread.new{ Sys::ProcTable.ps }.value }.not_to raise_error
end
end
end
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