feat: implement console plain output for debug logs (#1456)

* feat: implement console plain output for debug logs

* chore: rename console encoding to plain

* chore: refactor names

core/logx/logs_test.go

@@ -141,6 +141,78 @@ func TestStructedLogInfov(t *testing.T) {
 	})
 }
 
+func TestStructedLogInfoConsoleAny(t *testing.T) {
+	doTestStructedLogConsole(t, func(writer io.WriteCloser) {
+		infoLog = writer
+	}, func(v ...interface{}) {
+		old := encoding
+		encoding = plainEncodingType
+		defer func() {
+			encoding = old
+		}()
+
+		Infov(v)
+	})
+}
+
+func TestStructedLogInfoConsoleAnyString(t *testing.T) {
+	doTestStructedLogConsole(t, func(writer io.WriteCloser) {
+		infoLog = writer
+	}, func(v ...interface{}) {
+		old := encoding
+		encoding = plainEncodingType
+		defer func() {
+			encoding = old
+		}()
+
+		Infov(fmt.Sprint(v...))
+	})
+}
+
+func TestStructedLogInfoConsoleAnyError(t *testing.T) {
+	doTestStructedLogConsole(t, func(writer io.WriteCloser) {
+		infoLog = writer
+	}, func(v ...interface{}) {
+		old := encoding
+		encoding = plainEncodingType
+		defer func() {
+			encoding = old
+		}()
+
+		Infov(errors.New(fmt.Sprint(v...)))
+	})
+}
+
+func TestStructedLogInfoConsoleAnyStringer(t *testing.T) {
+	doTestStructedLogConsole(t, func(writer io.WriteCloser) {
+		infoLog = writer
+	}, func(v ...interface{}) {
+		old := encoding
+		encoding = plainEncodingType
+		defer func() {
+			encoding = old
+		}()
+
+		Infov(ValStringer{
+			val: fmt.Sprint(v...),
+		})
+	})
+}
+
+func TestStructedLogInfoConsoleText(t *testing.T) {
+	doTestStructedLogConsole(t, func(writer io.WriteCloser) {
+		infoLog = writer
+	}, func(v ...interface{}) {
+		old := encoding
+		encoding = plainEncodingType
+		defer func() {
+			encoding = old
+		}()
+
+		Info(fmt.Sprint(v...))
+	})
+}
+
 func TestStructedLogSlow(t *testing.T) {
 	doTestStructedLog(t, levelSlow, func(writer io.WriteCloser) {
 		slowLog = writer
@@ -432,6 +504,17 @@ func doTestStructedLog(t *testing.T, level string, setup func(writer io.WriteClo
 	assert.True(t, strings.Contains(val, message))
 }
 
+func doTestStructedLogConsole(t *testing.T, setup func(writer io.WriteCloser),
+	write func(...interface{})) {
+	const message = "hello there"
+	writer := new(mockWriter)
+	setup(writer)
+	atomic.StoreUint32(&initialized, 1)
+	write(message)
+	println(writer.String())
+	assert.True(t, strings.Contains(writer.String(), message))
+}
+
 func testSetLevelTwiceWithMode(t *testing.T, mode string) {
 	SetUp(LogConf{
 		Mode:  mode,
@@ -456,3 +539,11 @@ func testSetLevelTwiceWithMode(t *testing.T, mode string) {
 	ErrorStackf(message)
 	assert.Equal(t, 0, writer.builder.Len())
 }
+
+type ValStringer struct {
+	val string
+}
+
+func (v ValStringer) String() string {
+	return v.val
+}