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Add test coverage to pkg/jsonlog

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Signed-off-by: Vincent Demeester <vincent@sbr.pm>
This commit is contained in:
Vincent Demeester 2015-06-27 09:18:52 +02:00
parent 7571e6d900
commit e7a9a0bed8
5 changed files with 189 additions and 20 deletions
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17
pkg/jsonlog/jsonlog_marshalling.go
View file

@ -52,6 +52,17 @@
// buf.WriteString(`}`)
// return nil
// }
// @@ -81,9 +81,10 @@ func (mj *JSONLog) MarshalJSONBuf(buf *bytes.Buffer) error {
// if len(mj.Log) != 0 {
// - if first == true {
// - first = false
// - } else {
// - buf.WriteString(`,`)
// - }
// + first = false
// buf.WriteString(`"log":`)
// ffjson_WriteJsonString(buf, mj.Log)
// }
package jsonlog
@ -79,11 +90,7 @@ func (mj *JSONLog) MarshalJSONBuf(buf *bytes.Buffer) error {
)
buf.WriteString(`{`)
if len(mj.Log) != 0 {
if first == true {
first = false
} else {
buf.WriteString(`,`)
}
first = false
buf.WriteString(`"log":`)
ffjson_WriteJsonString(buf, mj.Log)
}

34
pkg/jsonlog/jsonlog_marshalling_test.go Normal file
View file

@ -0,0 +1,34 @@
package jsonlog
import (
"regexp"
"testing"
)
func TestJSONLogMarshalJSON(t *testing.T) {
logs := map[JSONLog]string{
JSONLog{Log: `"A log line with \\"`}: `^{\"log\":\"\\\"A log line with \\\\\\\\\\\"\",\"time\":\".{20,}\"}$`,
JSONLog{Log: "A log line"}: `^{\"log\":\"A log line\",\"time\":\".{20,}\"}$`,
JSONLog{Log: "A log line with \r"}: `^{\"log\":\"A log line with \\r\",\"time\":\".{20,}\"}$`,
JSONLog{Log: "A log line with & < >"}: `^{\"log\":\"A log line with \\u0026 \\u003c \\u003e\",\"time\":\".{20,}\"}$`,
JSONLog{Log: "A log line with utf8 : 🚀 ψ ω β"}: `^{\"log\":\"A log line with utf8 : 🚀 ψ ω β\",\"time\":\".{20,}\"}$`,
JSONLog{Stream: "stdout"}: `^{\"stream\":\"stdout\",\"time\":\".{20,}\"}$`,
JSONLog{}: `^{\"time\":\".{20,}\"}$`,
// These ones are a little weird
JSONLog{Log: "\u2028 \u2029"}: `^{\"log\":\"\\u2028 \\u2029\",\"time\":\".{20,}\"}$`,
JSONLog{Log: string([]byte{0xaF})}: `^{\"log\":\"\\ufffd\",\"time\":\".{20,}\"}$`,
JSONLog{Log: string([]byte{0x7F})}: `^{\"log\":\"\x7f\",\"time\":\".{20,}\"}$`,
}
for jsonLog, expression := range logs {
data, err := jsonLog.MarshalJSON()
if err != nil {
t.Fatal(err)
}
res := string(data)
t.Logf("Result of WriteLog: %q", res)
logRe := regexp.MustCompile(expression)
if !logRe.MatchString(res) {
t.Fatalf("Log line not in expected format [%v]: %q", expression, res)
}
}
}

115
pkg/jsonlog/jsonlog_test.go
View file

@ -5,6 +5,7 @@ import (
"encoding/json"
"io/ioutil"
"regexp"
"strconv"
"strings"
"testing"
"time"
@ -12,29 +13,123 @@ import (
"github.com/docker/docker/pkg/timeutils"
)
func TestWriteLog(t *testing.T) {
// Invalid json should return an error
func TestWriteLogWithInvalidJSON(t *testing.T) {
json := strings.NewReader("Invalid json")
w := bytes.NewBuffer(nil)
if err := WriteLog(json, w, "json", time.Time{}); err == nil {
t.Fatalf("Expected an error, got [%v]", w.String())
}
}
// Any format is valid, it will just print it
func TestWriteLogWithInvalidFormat(t *testing.T) {
testLine := "Line that thinks that it is log line from docker\n"
var buf bytes.Buffer
e := json.NewEncoder(&buf)
testLine := "Line that thinks that it is log line from docker\n"
for i := 0; i < 30; i++ {
for i := 0; i < 35; i++ {
e.Encode(JSONLog{Log: testLine, Stream: "stdout", Created: time.Now()})
}
w := bytes.NewBuffer(nil)
format := timeutils.RFC3339NanoFixed
if err := WriteLog(&buf, w, format, time.Time{}); err != nil {
if err := WriteLog(&buf, w, "invalid format", time.Time{}); err != nil {
t.Fatal(err)
}
res := w.String()
t.Logf("Result of WriteLog: %q", res)
lines := strings.Split(strings.TrimSpace(res), "\n")
if len(lines) != 30 {
t.Fatalf("Must be 30 lines but got %d", len(lines))
expression := "^invalid format Line that thinks that it is log line from docker$"
logRe := regexp.MustCompile(expression)
expectedLines := 35
if len(lines) != expectedLines {
t.Fatalf("Must be %v lines but got %d", expectedLines, len(lines))
}
// 30+ symbols, five more can come from system timezone
logRe := regexp.MustCompile(`.{30,} Line that thinks that it is log line from docker`)
for _, l := range lines {
if !logRe.MatchString(l) {
t.Fatalf("Log line not in expected format: %q", l)
t.Fatalf("Log line not in expected format [%v]: %q", expression, l)
}
}
}
// Having multiple Log/Stream element
func TestWriteLogWithMultipleStreamLog(t *testing.T) {
testLine := "Line that thinks that it is log line from docker\n"
var buf bytes.Buffer
e := json.NewEncoder(&buf)
for i := 0; i < 35; i++ {
e.Encode(JSONLog{Log: testLine, Stream: "stdout", Created: time.Now()})
}
w := bytes.NewBuffer(nil)
if err := WriteLog(&buf, w, "invalid format", time.Time{}); err != nil {
t.Fatal(err)
}
res := w.String()
t.Logf("Result of WriteLog: %q", res)
lines := strings.Split(strings.TrimSpace(res), "\n")
expression := "^invalid format Line that thinks that it is log line from docker$"
logRe := regexp.MustCompile(expression)
expectedLines := 35
if len(lines) != expectedLines {
t.Fatalf("Must be %v lines but got %d", expectedLines, len(lines))
}
for _, l := range lines {
if !logRe.MatchString(l) {
t.Fatalf("Log line not in expected format [%v]: %q", expression, l)
}
}
}
// Write log with since after created, it won't print anything
func TestWriteLogWithDate(t *testing.T) {
created, _ := time.Parse("YYYY-MM-dd", "2015-01-01")
var buf bytes.Buffer
testLine := "Line that thinks that it is log line from docker\n"
jsonLog := JSONLog{Log: testLine, Stream: "stdout", Created: created}
if err := json.NewEncoder(&buf).Encode(jsonLog); err != nil {
t.Fatal(err)
}
w := bytes.NewBuffer(nil)
if err := WriteLog(&buf, w, "json", time.Now()); err != nil {
t.Fatal(err)
}
res := w.String()
if res != "" {
t.Fatalf("Expected empty log, got [%v]", res)
}
}
// Happy path :)
func TestWriteLog(t *testing.T) {
testLine := "Line that thinks that it is log line from docker\n"
format := timeutils.RFC3339NanoFixed
logs := map[string][]string{
"": {"35", "^Line that thinks that it is log line from docker$"},
"json": {"1", `^{\"log\":\"Line that thinks that it is log line from docker\\n\",\"stream\":\"stdout\",\"time\":.{30,}\"}$`},
// 30+ symbols, five more can come from system timezone
format: {"35", `.{30,} Line that thinks that it is log line from docker`},
}
for givenFormat, expressionAndLines := range logs {
expectedLines, _ := strconv.Atoi(expressionAndLines[0])
expression := expressionAndLines[1]
var buf bytes.Buffer
e := json.NewEncoder(&buf)
for i := 0; i < 35; i++ {
e.Encode(JSONLog{Log: testLine, Stream: "stdout", Created: time.Now()})
}
w := bytes.NewBuffer(nil)
if err := WriteLog(&buf, w, givenFormat, time.Time{}); err != nil {
t.Fatal(err)
}
res := w.String()
t.Logf("Result of WriteLog: %q", res)
lines := strings.Split(strings.TrimSpace(res), "\n")
if len(lines) != expectedLines {
t.Fatalf("Must be %v lines but got %d", expectedLines, len(lines))
}
logRe := regexp.MustCompile(expression)
for _, l := range lines {
if !logRe.MatchString(l) {
t.Fatalf("Log line not in expected format [%v]: %q", expression, l)
}
}
}
}

6
pkg/jsonlog/jsonlogbytes.go
View file

@ -21,11 +21,7 @@ func (mj *JSONLogBytes) MarshalJSONBuf(buf *bytes.Buffer) error {
buf.WriteString(`{`)
if len(mj.Log) != 0 {
if first == true {
first = false
} else {
buf.WriteString(`,`)
}
first = false
buf.WriteString(`"log":`)
ffjson_WriteJsonBytesAsString(buf, mj.Log)
}

37
pkg/jsonlog/jsonlogbytes_test.go Normal file
View file

@ -0,0 +1,37 @@
package jsonlog
import (
"bytes"
"regexp"
"testing"
)
func TestJSONLogBytesMarshalJSONBuf(t *testing.T) {
logs := map[*JSONLogBytes]string{
&JSONLogBytes{Log: []byte(`"A log line with \\"`)}: `^{\"log\":\"\\\"A log line with \\\\\\\\\\\"\",\"time\":}$`,
&JSONLogBytes{Log: []byte("A log line")}: `^{\"log\":\"A log line\",\"time\":}$`,
&JSONLogBytes{Log: []byte("A log line with \r")}: `^{\"log\":\"A log line with \\r\",\"time\":}$`,
&JSONLogBytes{Log: []byte("A log line with & < >")}: `^{\"log\":\"A log line with \\u0026 \\u003c \\u003e\",\"time\":}$`,
&JSONLogBytes{Log: []byte("A log line with utf8 : 🚀 ψ ω β")}: `^{\"log\":\"A log line with utf8 : 🚀 ψ ω β\",\"time\":}$`,
&JSONLogBytes{Stream: "stdout"}: `^{\"stream\":\"stdout\",\"time\":}$`,
&JSONLogBytes{Stream: "stdout", Log: []byte("A log line")}: `^{\"log\":\"A log line\",\"stream\":\"stdout\",\"time\":}$`,
&JSONLogBytes{Created: "time"}: `^{\"time\":time}$`,
&JSONLogBytes{}: `^{\"time\":}$`,
// These ones are a little weird
&JSONLogBytes{Log: []byte("\u2028 \u2029")}: `^{\"log\":\"\\u2028 \\u2029\",\"time\":}$`,
&JSONLogBytes{Log: []byte{0xaF}}: `^{\"log\":\"\\ufffd\",\"time\":}$`,
&JSONLogBytes{Log: []byte{0x7F}}: `^{\"log\":\"\x7f\",\"time\":}$`,
}
for jsonLog, expression := range logs {
var buf bytes.Buffer
if err := jsonLog.MarshalJSONBuf(&buf); err != nil {
t.Fatal(err)
}
res := buf.String()
t.Logf("Result of WriteLog: %q", res)
logRe := regexp.MustCompile(expression)
if !logRe.MatchString(res) {
t.Fatalf("Log line not in expected format [%v]: %q", expression, res)
}
}
}