// +build !windows package ping import ( "errors" "reflect" "runtime" "sort" "testing" "github.com/influxdata/telegraf/testutil" "github.com/stretchr/testify/assert" ) // BSD/Darwin ping output var bsdPingOutput = ` PING www.google.com (216.58.217.36): 56 data bytes 64 bytes from 216.58.217.36: icmp_seq=0 ttl=55 time=15.087 ms 64 bytes from 216.58.217.36: icmp_seq=1 ttl=55 time=21.564 ms 64 bytes from 216.58.217.36: icmp_seq=2 ttl=55 time=27.263 ms 64 bytes from 216.58.217.36: icmp_seq=3 ttl=55 time=18.828 ms 64 bytes from 216.58.217.36: icmp_seq=4 ttl=55 time=18.378 ms --- www.google.com ping statistics --- 5 packets transmitted, 5 packets received, 0.0% packet loss round-trip min/avg/max/stddev = 15.087/20.224/27.263/4.076 ms ` // Linux ping output var linuxPingOutput = ` PING www.google.com (216.58.218.164) 56(84) bytes of data. 64 bytes from host.net (216.58.218.164): icmp_seq=1 ttl=63 time=35.2 ms 64 bytes from host.net (216.58.218.164): icmp_seq=2 ttl=63 time=42.3 ms 64 bytes from host.net (216.58.218.164): icmp_seq=3 ttl=63 time=45.1 ms 64 bytes from host.net (216.58.218.164): icmp_seq=4 ttl=63 time=43.5 ms 64 bytes from host.net (216.58.218.164): icmp_seq=5 ttl=63 time=51.8 ms --- www.google.com ping statistics --- 5 packets transmitted, 5 received, 0% packet loss, time 4010ms rtt min/avg/max/mdev = 35.225/43.628/51.806/5.325 ms ` // Fatal ping output (invalid argument) var fatalPingOutput = ` ping: -i interval too short: Operation not permitted ` // Test that ping command output is processed properly func TestProcessPingOutput(t *testing.T) { trans, rec, min, avg, max, stddev, err := processPingOutput(bsdPingOutput) assert.NoError(t, err) assert.Equal(t, 5, trans, "5 packets were transmitted") assert.Equal(t, 5, rec, "5 packets were transmitted") assert.InDelta(t, 15.087, min, 0.001) assert.InDelta(t, 20.224, avg, 0.001) assert.InDelta(t, 27.263, max, 0.001) assert.InDelta(t, 4.076, stddev, 0.001) trans, rec, min, avg, max, stddev, err = processPingOutput(linuxPingOutput) assert.NoError(t, err) assert.Equal(t, 5, trans, "5 packets were transmitted") assert.Equal(t, 5, rec, "5 packets were transmitted") assert.InDelta(t, 35.225, min, 0.001) assert.InDelta(t, 43.628, avg, 0.001) assert.InDelta(t, 51.806, max, 0.001) assert.InDelta(t, 5.325, stddev, 0.001) } // Test that processPingOutput returns an error when 'ping' fails to run, such // as when an invalid argument is provided func TestErrorProcessPingOutput(t *testing.T) { _, _, _, _, _, _, err := processPingOutput(fatalPingOutput) assert.Error(t, err, "Error was expected from processPingOutput") } // Test that arg lists and created correctly func TestArgs(t *testing.T) { p := Ping{ Count: 2, } // Actual and Expected arg lists must be sorted for reflect.DeepEqual actual := p.args("www.google.com") expected := []string{"-c", "2", "-n", "-s", "16", "www.google.com"} sort.Strings(actual) sort.Strings(expected) assert.True(t, reflect.DeepEqual(expected, actual), "Expected: %s Actual: %s", expected, actual) p.Interface = "eth0" actual = p.args("www.google.com") expected = []string{"-c", "2", "-n", "-s", "16", "-I", "eth0", "www.google.com"} sort.Strings(actual) sort.Strings(expected) assert.True(t, reflect.DeepEqual(expected, actual), "Expected: %s Actual: %s", expected, actual) p.Timeout = 12.0 actual = p.args("www.google.com") switch runtime.GOOS { case "darwin": expected = []string{"-c", "2", "-n", "-s", "16", "-I", "eth0", "-W", "12000.0", "www.google.com"} case "freebsd": expected = []string{"-c", "2", "-n", "-s", "16", "-I", "eth0", "-t", "12.0", "www.google.com"} default: expected = []string{"-c", "2", "-n", "-s", "16", "-I", "eth0", "-W", "12.0", "www.google.com"} } sort.Strings(actual) sort.Strings(expected) assert.True(t, reflect.DeepEqual(expected, actual), "Expected: %s Actual: %s", expected, actual) p.PingInterval = 1.2 actual = p.args("www.google.com") switch runtime.GOOS { case "darwin": expected = []string{"-c", "2", "-n", "-s", "16", "-I", "eth0", "-W", "12000.0", "-i", "1.2", "www.google.com"} case "freebsd": expected = []string{"-c", "2", "-n", "-s", "16", "-I", "eth0", "-t", "12.0", "-i", "1.2", "www.google.com"} default: expected = []string{"-c", "2", "-n", "-s", "16", "-I", "eth0", "-W", "12.0", "-i", "1.2", "www.google.com"} } sort.Strings(actual) sort.Strings(expected) assert.True(t, reflect.DeepEqual(expected, actual), "Expected: %s Actual: %s", expected, actual) } func mockHostPinger(timeout float64, args ...string) (string, error) { return linuxPingOutput, nil } // Test that Gather function works on a normal ping func TestPingGather(t *testing.T) { var acc testutil.Accumulator p := Ping{ Urls: []string{"www.google.com", "www.reddit.com"}, pingHost: mockHostPinger, } acc.GatherError(p.Gather) tags := map[string]string{"url": "www.google.com"} fields := map[string]interface{}{ "packets_transmitted": 5, "packets_received": 5, "percent_packet_loss": 0.0, "minimum_response_ms": 35.225, "average_response_ms": 43.628, "maximum_response_ms": 51.806, "standard_deviation_ms": 5.325, } acc.AssertContainsTaggedFields(t, "ping", fields, tags) tags = map[string]string{"url": "www.reddit.com"} acc.AssertContainsTaggedFields(t, "ping", fields, tags) } var lossyPingOutput = ` PING www.google.com (216.58.218.164) 56(84) bytes of data. 64 bytes from host.net (216.58.218.164): icmp_seq=1 ttl=63 time=35.2 ms 64 bytes from host.net (216.58.218.164): icmp_seq=3 ttl=63 time=45.1 ms 64 bytes from host.net (216.58.218.164): icmp_seq=5 ttl=63 time=51.8 ms --- www.google.com ping statistics --- 5 packets transmitted, 3 received, 40% packet loss, time 4010ms rtt min/avg/max/mdev = 35.225/44.033/51.806/5.325 ms ` func mockLossyHostPinger(timeout float64, args ...string) (string, error) { return lossyPingOutput, nil } // Test that Gather works on a ping with lossy packets func TestLossyPingGather(t *testing.T) { var acc testutil.Accumulator p := Ping{ Urls: []string{"www.google.com"}, pingHost: mockLossyHostPinger, } acc.GatherError(p.Gather) tags := map[string]string{"url": "www.google.com"} fields := map[string]interface{}{ "packets_transmitted": 5, "packets_received": 3, "percent_packet_loss": 40.0, "minimum_response_ms": 35.225, "average_response_ms": 44.033, "maximum_response_ms": 51.806, "standard_deviation_ms": 5.325, } acc.AssertContainsTaggedFields(t, "ping", fields, tags) } var errorPingOutput = ` PING www.amazon.com (176.32.98.166): 56 data bytes Request timeout for icmp_seq 0 --- www.amazon.com ping statistics --- 2 packets transmitted, 0 packets received, 100.0% packet loss ` func mockErrorHostPinger(timeout float64, args ...string) (string, error) { return errorPingOutput, errors.New("No packets received") } // Test that Gather works on a ping with no transmitted packets, even though the // command returns an error func TestBadPingGather(t *testing.T) { var acc testutil.Accumulator p := Ping{ Urls: []string{"www.amazon.com"}, pingHost: mockErrorHostPinger, } acc.GatherError(p.Gather) tags := map[string]string{"url": "www.amazon.com"} fields := map[string]interface{}{ "packets_transmitted": 2, "packets_received": 0, "percent_packet_loss": 100.0, } acc.AssertContainsTaggedFields(t, "ping", fields, tags) } func mockFatalHostPinger(timeout float64, args ...string) (string, error) { return fatalPingOutput, errors.New("So very bad") } // Test that a fatal ping command does not gather any statistics. func TestFatalPingGather(t *testing.T) { var acc testutil.Accumulator p := Ping{ Urls: []string{"www.amazon.com"}, pingHost: mockFatalHostPinger, } acc.GatherError(p.Gather) assert.False(t, acc.HasMeasurement("packets_transmitted"), "Fatal ping should not have packet measurements") assert.False(t, acc.HasMeasurement("packets_received"), "Fatal ping should not have packet measurements") assert.False(t, acc.HasMeasurement("percent_packet_loss"), "Fatal ping should not have packet measurements") assert.False(t, acc.HasMeasurement("minimum_response_ms"), "Fatal ping should not have packet measurements") assert.False(t, acc.HasMeasurement("average_response_ms"), "Fatal ping should not have packet measurements") assert.False(t, acc.HasMeasurement("maximum_response_ms"), "Fatal ping should not have packet measurements") }