package logrus import ( "bytes" "errors" "fmt" "os" "runtime" "sort" "strings" "testing" "time" "github.com/stretchr/testify/assert" "github.com/stretchr/testify/require" ) func TestFormatting(t *testing.T) { tf := &TextFormatter{DisableColors: true} testCases := []struct { value string expected string }{ {`foo`, "time=\"0001-01-01T00:00:00Z\" level=panic test=foo\n"}, } for _, tc := range testCases { b, _ := tf.Format(WithField("test", tc.value)) if string(b) != tc.expected { t.Errorf("formatting expected for %q (result was %q instead of %q)", tc.value, string(b), tc.expected) } } } func TestQuoting(t *testing.T) { tf := &TextFormatter{DisableColors: true} checkQuoting := func(q bool, value interface{}) { b, _ := tf.Format(WithField("test", value)) idx := bytes.Index(b, ([]byte)("test=")) cont := bytes.Contains(b[idx+5:], []byte("\"")) if cont != q { if q { t.Errorf("quoting expected for: %#v", value) } else { t.Errorf("quoting not expected for: %#v", value) } } } checkQuoting(false, "") checkQuoting(false, "abcd") checkQuoting(false, "v1.0") checkQuoting(false, "1234567890") checkQuoting(false, "/foobar") checkQuoting(false, "foo_bar") checkQuoting(false, "foo@bar") checkQuoting(false, "foobar^") checkQuoting(false, "+/-_^@f.oobar") checkQuoting(true, "foobar$") checkQuoting(true, "&foobar") checkQuoting(true, "x y") checkQuoting(true, "x,y") checkQuoting(false, errors.New("invalid")) checkQuoting(true, errors.New("invalid argument")) // Test for quoting empty fields. tf.QuoteEmptyFields = true checkQuoting(true, "") checkQuoting(false, "abcd") checkQuoting(true, errors.New("invalid argument")) } func TestEscaping(t *testing.T) { tf := &TextFormatter{DisableColors: true} testCases := []struct { value string expected string }{ {`ba"r`, `ba\"r`}, {`ba'r`, `ba'r`}, } for _, tc := range testCases { b, _ := tf.Format(WithField("test", tc.value)) if !bytes.Contains(b, []byte(tc.expected)) { t.Errorf("escaping expected for %q (result was %q instead of %q)", tc.value, string(b), tc.expected) } } } func TestEscaping_Interface(t *testing.T) { tf := &TextFormatter{DisableColors: true} ts := time.Now() testCases := []struct { value interface{} expected string }{ {ts, fmt.Sprintf("\"%s\"", ts.String())}, {errors.New("error: something went wrong"), "\"error: something went wrong\""}, } for _, tc := range testCases { b, _ := tf.Format(WithField("test", tc.value)) if !bytes.Contains(b, []byte(tc.expected)) { t.Errorf("escaping expected for %q (result was %q instead of %q)", tc.value, string(b), tc.expected) } } } func TestTimestampFormat(t *testing.T) { checkTimeStr := func(format string) { customFormatter := &TextFormatter{DisableColors: true, TimestampFormat: format} customStr, _ := customFormatter.Format(WithField("test", "test")) timeStart := bytes.Index(customStr, ([]byte)("time=")) timeEnd := bytes.Index(customStr, ([]byte)("level=")) timeStr := customStr[timeStart+5+len("\"") : timeEnd-1-len("\"")] if format == "" { format = time.RFC3339 } _, e := time.Parse(format, (string)(timeStr)) if e != nil { t.Errorf("time string \"%s\" did not match provided time format \"%s\": %s", timeStr, format, e) } } checkTimeStr("2006-01-02T15:04:05.000000000Z07:00") checkTimeStr("Mon Jan _2 15:04:05 2006") checkTimeStr("") } func TestDisableLevelTruncation(t *testing.T) { entry := &Entry{ Time: time.Now(), Message: "testing", } keys := []string{} timestampFormat := "Mon Jan 2 15:04:05 -0700 MST 2006" checkDisableTruncation := func(disabled bool, level Level) { tf := &TextFormatter{DisableLevelTruncation: disabled} var b bytes.Buffer entry.Level = level tf.printColored(&b, entry, keys, nil, timestampFormat) logLine := (&b).String() if disabled { expected := strings.ToUpper(level.String()) if !strings.Contains(logLine, expected) { t.Errorf("level string expected to be %s when truncation disabled", expected) } } else { expected := strings.ToUpper(level.String()) if len(level.String()) > 4 { if strings.Contains(logLine, expected) { t.Errorf("level string %s expected to be truncated to %s when truncation is enabled", expected, expected[0:4]) } } else { if !strings.Contains(logLine, expected) { t.Errorf("level string expected to be %s when truncation is enabled and level string is below truncation threshold", expected) } } } } checkDisableTruncation(true, DebugLevel) checkDisableTruncation(true, InfoLevel) checkDisableTruncation(false, ErrorLevel) checkDisableTruncation(false, InfoLevel) } func TestPadLevelText(t *testing.T) { // A note for future maintainers / committers: // // This test denormalizes the level text as a part of its assertions. // Because of that, its not really a "unit test" of the PadLevelText functionality. // So! Many apologies to the potential future person who has to rewrite this test // when they are changing some completely unrelated functionality. params := []struct { name string level Level paddedLevelText string }{ { name: "PanicLevel", level: PanicLevel, paddedLevelText: "PANIC ", // 2 extra spaces }, { name: "FatalLevel", level: FatalLevel, paddedLevelText: "FATAL ", // 2 extra spaces }, { name: "ErrorLevel", level: ErrorLevel, paddedLevelText: "ERROR ", // 2 extra spaces }, { name: "WarnLevel", level: WarnLevel, // WARNING is already the max length, so we don't need to assert a paddedLevelText }, { name: "DebugLevel", level: DebugLevel, paddedLevelText: "DEBUG ", // 2 extra spaces }, { name: "TraceLevel", level: TraceLevel, paddedLevelText: "TRACE ", // 2 extra spaces }, { name: "InfoLevel", level: InfoLevel, paddedLevelText: "INFO ", // 3 extra spaces }, } // We create a "default" TextFormatter to do a control test. // We also create a TextFormatter with PadLevelText, which is the parameter we want to do our most relevant assertions against. tfDefault := TextFormatter{} tfWithPadding := TextFormatter{PadLevelText: true} for _, val := range params { t.Run(val.name, func(t *testing.T) { // TextFormatter writes into these bytes.Buffers, and we make assertions about their contents later var bytesDefault bytes.Buffer var bytesWithPadding bytes.Buffer // The TextFormatter instance and the bytes.Buffer instance are different here // all the other arguments are the same. We also initialize them so that they // fill in the value of levelTextMaxLength. tfDefault.init(&Entry{}) tfDefault.printColored(&bytesDefault, &Entry{Level: val.level}, []string{}, nil, "") tfWithPadding.init(&Entry{}) tfWithPadding.printColored(&bytesWithPadding, &Entry{Level: val.level}, []string{}, nil, "") // turn the bytes back into a string so that we can actually work with the data logLineDefault := (&bytesDefault).String() logLineWithPadding := (&bytesWithPadding).String() // Control: the level text should not be padded by default if val.paddedLevelText != "" && strings.Contains(logLineDefault, val.paddedLevelText) { t.Errorf("log line %q should not contain the padded level text %q by default", logLineDefault, val.paddedLevelText) } // Assertion: the level text should still contain the string representation of the level if !strings.Contains(strings.ToLower(logLineWithPadding), val.level.String()) { t.Errorf("log line %q should contain the level text %q when padding is enabled", logLineWithPadding, val.level.String()) } // Assertion: the level text should be in its padded form now if val.paddedLevelText != "" && !strings.Contains(logLineWithPadding, val.paddedLevelText) { t.Errorf("log line %q should contain the padded level text %q when padding is enabled", logLineWithPadding, val.paddedLevelText) } }) } } func TestDisableTimestampWithColoredOutput(t *testing.T) { tf := &TextFormatter{DisableTimestamp: true, ForceColors: true} b, _ := tf.Format(WithField("test", "test")) if strings.Contains(string(b), "[0000]") { t.Error("timestamp not expected when DisableTimestamp is true") } } func TestNewlineBehavior(t *testing.T) { tf := &TextFormatter{ForceColors: true} // Ensure a single new line is removed as per stdlib log e := NewEntry(StandardLogger()) e.Message = "test message\n" b, _ := tf.Format(e) if bytes.Contains(b, []byte("test message\n")) { t.Error("first newline at end of Entry.Message resulted in unexpected 2 newlines in output. Expected newline to be removed.") } // Ensure a double new line is reduced to a single new line e = NewEntry(StandardLogger()) e.Message = "test message\n\n" b, _ = tf.Format(e) if bytes.Contains(b, []byte("test message\n\n")) { t.Error("Double newline at end of Entry.Message resulted in unexpected 2 newlines in output. Expected single newline") } if !bytes.Contains(b, []byte("test message\n")) { t.Error("Double newline at end of Entry.Message did not result in a single newline after formatting") } } func TestTextFormatterFieldMap(t *testing.T) { formatter := &TextFormatter{ DisableColors: true, FieldMap: FieldMap{ FieldKeyMsg: "message", FieldKeyLevel: "somelevel", FieldKeyTime: "timeywimey", }, } entry := &Entry{ Message: "oh hi", Level: WarnLevel, Time: time.Date(1981, time.February, 24, 4, 28, 3, 100, time.UTC), Data: Fields{ "field1": "f1", "message": "messagefield", "somelevel": "levelfield", "timeywimey": "timeywimeyfield", }, } b, err := formatter.Format(entry) if err != nil { t.Fatal("Unable to format entry: ", err) } assert.Equal(t, `timeywimey="1981-02-24T04:28:03Z" `+ `somelevel=warning `+ `message="oh hi" `+ `field1=f1 `+ `fields.message=messagefield `+ `fields.somelevel=levelfield `+ `fields.timeywimey=timeywimeyfield`+"\n", string(b), "Formatted output doesn't respect FieldMap") } func TestTextFormatterIsColored(t *testing.T) { params := []struct { name string expectedResult bool isTerminal bool disableColor bool forceColor bool envColor bool clicolorIsSet bool clicolorForceIsSet bool clicolorVal string clicolorForceVal string }{ // Default values { name: "testcase1", expectedResult: false, isTerminal: false, disableColor: false, forceColor: false, envColor: false, clicolorIsSet: false, clicolorForceIsSet: false, }, // Output on terminal { name: "testcase2", expectedResult: true, isTerminal: true, disableColor: false, forceColor: false, envColor: false, clicolorIsSet: false, clicolorForceIsSet: false, }, // Output on terminal with color disabled { name: "testcase3", expectedResult: false, isTerminal: true, disableColor: true, forceColor: false, envColor: false, clicolorIsSet: false, clicolorForceIsSet: false, }, // Output not on terminal with color disabled { name: "testcase4", expectedResult: false, isTerminal: false, disableColor: true, forceColor: false, envColor: false, clicolorIsSet: false, clicolorForceIsSet: false, }, // Output not on terminal with color forced { name: "testcase5", expectedResult: true, isTerminal: false, disableColor: false, forceColor: true, envColor: false, clicolorIsSet: false, clicolorForceIsSet: false, }, // Output on terminal with clicolor set to "0" { name: "testcase6", expectedResult: false, isTerminal: true, disableColor: false, forceColor: false, envColor: true, clicolorIsSet: true, clicolorForceIsSet: false, clicolorVal: "0", }, // Output on terminal with clicolor set to "1" { name: "testcase7", expectedResult: true, isTerminal: true, disableColor: false, forceColor: false, envColor: true, clicolorIsSet: true, clicolorForceIsSet: false, clicolorVal: "1", }, // Output not on terminal with clicolor set to "0" { name: "testcase8", expectedResult: false, isTerminal: false, disableColor: false, forceColor: false, envColor: true, clicolorIsSet: true, clicolorForceIsSet: false, clicolorVal: "0", }, // Output not on terminal with clicolor set to "1" { name: "testcase9", expectedResult: false, isTerminal: false, disableColor: false, forceColor: false, envColor: true, clicolorIsSet: true, clicolorForceIsSet: false, clicolorVal: "1", }, // Output not on terminal with clicolor set to "1" and force color { name: "testcase10", expectedResult: true, isTerminal: false, disableColor: false, forceColor: true, envColor: true, clicolorIsSet: true, clicolorForceIsSet: false, clicolorVal: "1", }, // Output not on terminal with clicolor set to "0" and force color { name: "testcase11", expectedResult: false, isTerminal: false, disableColor: false, forceColor: true, envColor: true, clicolorIsSet: true, clicolorForceIsSet: false, clicolorVal: "0", }, // Output not on terminal with clicolor_force set to "1" { name: "testcase12", expectedResult: true, isTerminal: false, disableColor: false, forceColor: false, envColor: true, clicolorIsSet: false, clicolorForceIsSet: true, clicolorForceVal: "1", }, // Output not on terminal with clicolor_force set to "0" { name: "testcase13", expectedResult: false, isTerminal: false, disableColor: false, forceColor: false, envColor: true, clicolorIsSet: false, clicolorForceIsSet: true, clicolorForceVal: "0", }, // Output on terminal with clicolor_force set to "0" { name: "testcase14", expectedResult: false, isTerminal: true, disableColor: false, forceColor: false, envColor: true, clicolorIsSet: false, clicolorForceIsSet: true, clicolorForceVal: "0", }, } cleanenv := func() { os.Unsetenv("CLICOLOR") os.Unsetenv("CLICOLOR_FORCE") } defer cleanenv() for _, val := range params { t.Run("textformatter_"+val.name, func(subT *testing.T) { tf := TextFormatter{ isTerminal: val.isTerminal, DisableColors: val.disableColor, ForceColors: val.forceColor, EnvironmentOverrideColors: val.envColor, } cleanenv() if val.clicolorIsSet { os.Setenv("CLICOLOR", val.clicolorVal) } if val.clicolorForceIsSet { os.Setenv("CLICOLOR_FORCE", val.clicolorForceVal) } res := tf.isColored() if runtime.GOOS == "windows" && !tf.ForceColors && !val.clicolorForceIsSet { assert.Equal(subT, false, res) } else { assert.Equal(subT, val.expectedResult, res) } }) } } func TestCustomSorting(t *testing.T) { formatter := &TextFormatter{ DisableColors: true, SortingFunc: func(keys []string) { sort.Slice(keys, func(i, j int) bool { if keys[j] == "prefix" { return false } if keys[i] == "prefix" { return true } return strings.Compare(keys[i], keys[j]) == -1 }) }, } entry := &Entry{ Message: "Testing custom sort function", Time: time.Now(), Level: InfoLevel, Data: Fields{ "test": "testvalue", "prefix": "the application prefix", "blablabla": "blablabla", }, } b, err := formatter.Format(entry) require.NoError(t, err) require.True(t, strings.HasPrefix(string(b), "prefix="), "format output is %q", string(b)) }