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// Copyright 2022 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package slog
import (
"flag"
"strings"
"testing"
)
func TestLevelString(t *testing.T) {
for _, test := range []struct {
in Level
want string
}{
{0, "INFO"},
{LevelError, "ERROR"},
{LevelError + 2, "ERROR+2"},
{LevelError - 2, "WARN+2"},
{LevelWarn, "WARN"},
{LevelWarn - 1, "INFO+3"},
{LevelInfo, "INFO"},
{LevelInfo + 1, "INFO+1"},
{LevelInfo - 3, "DEBUG+1"},
{LevelDebug, "DEBUG"},
{LevelDebug - 2, "DEBUG-2"},
} {
got := test.in.String()
if got != test.want {
t.Errorf("%d: got %s, want %s", test.in, got, test.want)
}
}
}
func TestLevelVar(t *testing.T) {
var al LevelVar
if got, want := al.Level(), LevelInfo; got != want {
t.Errorf("got %v, want %v", got, want)
}
al.Set(LevelWarn)
if got, want := al.Level(), LevelWarn; got != want {
t.Errorf("got %v, want %v", got, want)
}
al.Set(LevelInfo)
if got, want := al.Level(), LevelInfo; got != want {
t.Errorf("got %v, want %v", got, want)
}
}
func TestMarshalJSON(t *testing.T) {
want := LevelWarn - 3
data, err := want.MarshalJSON()
if err != nil {
t.Fatal(err)
}
var got Level
if err := got.UnmarshalJSON(data); err != nil {
t.Fatal(err)
}
if got != want {
t.Errorf("got %s, want %s", got, want)
}
}
func TestLevelMarshalText(t *testing.T) {
want := LevelWarn - 3
data, err := want.MarshalText()
if err != nil {
t.Fatal(err)
}
var got Level
if err := got.UnmarshalText(data); err != nil {
t.Fatal(err)
}
if got != want {
t.Errorf("got %s, want %s", got, want)
}
}
func TestLevelParse(t *testing.T) {
for _, test := range []struct {
in string
want Level
}{
{"DEBUG", LevelDebug},
{"INFO", LevelInfo},
{"WARN", LevelWarn},
{"ERROR", LevelError},
{"debug", LevelDebug},
{"iNfo", LevelInfo},
{"INFO+87", LevelInfo + 87},
{"Error-18", LevelError - 18},
{"Error-8", LevelInfo},
} {
var got Level
if err := got.parse(test.in); err != nil {
t.Fatalf("%q: %v", test.in, err)
}
if got != test.want {
t.Errorf("%q: got %s, want %s", test.in, got, test.want)
}
}
}
func TestLevelParseError(t *testing.T) {
for _, test := range []struct {
in string
want string // error string should contain this
}{
{"", "unknown name"},
{"dbg", "unknown name"},
{"INFO+", "invalid syntax"},
{"INFO-", "invalid syntax"},
{"ERROR+23x", "invalid syntax"},
} {
var l Level
err := l.parse(test.in)
if err == nil || !strings.Contains(err.Error(), test.want) {
t.Errorf("%q: got %v, want string containing %q", test.in, err, test.want)
}
}
}
func TestLevelFlag(t *testing.T) {
fs := flag.NewFlagSet("test", flag.ContinueOnError)
lf := LevelInfo
fs.TextVar(&lf, "level", lf, "set level")
err := fs.Parse([]string{"-level", "WARN+3"})
if err != nil {
t.Fatal(err)
}
if g, w := lf, LevelWarn+3; g != w {
t.Errorf("got %v, want %v", g, w)
}
}
func TestLevelVarMarshalText(t *testing.T) {
var v LevelVar
v.Set(LevelWarn)
data, err := v.MarshalText()
if err != nil {
t.Fatal(err)
}
var v2 LevelVar
if err := v2.UnmarshalText(data); err != nil {
t.Fatal(err)
}
if g, w := v2.Level(), LevelWarn; g != w {
t.Errorf("got %s, want %s", g, w)
}
}
func TestLevelVarFlag(t *testing.T) {
fs := flag.NewFlagSet("test", flag.ContinueOnError)
v := &LevelVar{}
v.Set(LevelWarn + 3)
fs.TextVar(v, "level", v, "set level")
err := fs.Parse([]string{"-level", "WARN+3"})
if err != nil {
t.Fatal(err)
}
if g, w := v.Level(), LevelWarn+3; g != w {
t.Errorf("got %v, want %v", g, w)
}
}
func TestLevelVarString(t *testing.T) {
var v LevelVar
v.Set(LevelError)
got := v.String()
want := "LevelVar(ERROR)"
if got != want {
t.Errorf("got %q, want %q", got, want)
}
}