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require 'spec_helper'
describe Vmstat do
context "#boot_time" do
let(:boot_time) { Vmstat.boot_time }
it "should be an array" do
boot_time.should be_a(Time)
end
it "has to be a time before now" do
boot_time.should < Time.now
end
end
context "Vmstat#filter_devices" do
unless travis? # no external ethernet devices on travis ci
# Cannot detect ethernet interface on s390x
xit "should filter ethernet devices" do
Vmstat.ethernet_devices.size.should >= 1
end
end
# buildd can have more than loopback device
xit "should filter loopback devices" do
Vmstat.loopback_devices.size.should == 1
end
end
context "performance" do
percent = RUBY_VERSION.to_i == 2 ? 26 : 10
shared_examples "a not memory leaking method" do |method_name, *args|
xit "should not grow the memory in method #{method_name} " +
"more than #{percent}% " do
mem_before = Vmstat.task.resident_size
10000.times { Vmstat.send(method_name, *args) }
mem_after = Vmstat.task.resident_size
mem_after.should < (mem_before * (1 + percent / 100.0))
end
end
it_should_behave_like "a not memory leaking method", :network_interfaces
it_should_behave_like "a not memory leaking method", :cpu
it_should_behave_like "a not memory leaking method", :memory
it_should_behave_like "a not memory leaking method", :disk, "/"
it_should_behave_like "a not memory leaking method", :boot_time
it_should_behave_like "a not memory leaking method", :load_average
end if ENV['PERF'] == "1"
end
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