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9c43c0a5c9
Stringifying ends up outputting them with a machine-dependent timezone, and a numeric timestamp is easier to grok in a test like this anyway.
86 lines
2.3 KiB
Go
86 lines
2.3 KiB
Go
// Copyright 2016 Google Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package pcap
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import (
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"bytes"
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"fmt"
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"io/ioutil"
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"os"
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"reflect"
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"testing"
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"time"
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)
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func sprintPackets(pkts []*Packet) string {
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var buf bytes.Buffer
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for _, pkt := range pkts {
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buf.WriteString("{\n")
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p := reflect.ValueOf(pkt).Elem()
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t := p.Type()
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for i := 0; i < p.NumField(); i++ {
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v := p.Field(i).Interface()
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// Pretty-print Time, so it doesn't have a varying pointer
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// in it.
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if t, ok := v.(time.Time); ok {
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v = t.UnixNano()
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}
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fmt.Fprintf(&buf, " %s: %#v,\n", t.Field(i).Name, v)
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}
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buf.WriteString("}\n")
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}
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return buf.String()
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}
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func TestFiles(t *testing.T) {
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for _, fname := range []string{"usec", "nsec"} {
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f, err := os.Open(fmt.Sprintf("testdata/%s.pcap", fname))
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if err != nil {
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t.Fatalf("Opening test input file: %s", err)
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}
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r, err := NewReader(f)
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if err != nil {
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t.Fatalf("Creating pcap reader: %s", err)
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}
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if r.LinkType != LinkEthernet {
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t.Errorf("Expected link type %d, got %d", LinkEthernet, r.LinkType)
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}
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pkts := []*Packet{}
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for r.Next() {
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pkts = append(pkts, r.Packet())
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}
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if r.Err() != nil {
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t.Fatalf("Reading packets from %s.pcap: %s", fname, r.Err())
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}
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res := sprintPackets(pkts)
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expectedFile := fmt.Sprintf("testdata/%s.parsed", fname)
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expected, err := ioutil.ReadFile(expectedFile)
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if err != nil {
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t.Fatalf("Reading expected file: %s", err)
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}
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if res != string(expected) {
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if os.Getenv("UPDATE_TESTDATA") != "" {
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ioutil.WriteFile(expectedFile, []byte(res), 0644)
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t.Errorf("%s.pcap didn't decode to %s.parsed (updated %s.parsed)", fname, fname, fname)
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} else {
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t.Fatalf("%s.pcap didn't decode to %s.parsed (rerun with UPDATE_TESTDATA=1 to get diff)", fname, fname)
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}
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}
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}
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}
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