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