djmil
7bc91b0890
Two modes for interactive CLI use — driven by debugFile presence: - Normal (debugFile=""): human text on screen, INFO and above. - Debug (debugFile set): same screen + full JSON trace to file. Auto-detects TTY; falls back to 12-factor JSON when piped/redirected. IsInteractive() exposes TTY detection for call sites that need it. Terminal format: INFO has no prefix (program's normal voice); WARN prints "warning: …"; ERROR prints "error: …"; DEBUG "debug: …". Breaking: NewDevelopment removed. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
122 lines
3.1 KiB
Go
122 lines
3.1 KiB
Go
package logger
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import (
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"log/slog"
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"strings"
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"testing"
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)
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func TestHumanLevel(t *testing.T) {
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tests := []struct {
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level slog.Level
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want string
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}{
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{slog.LevelDebug, "debug: "},
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{slog.LevelInfo, ""},
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{slog.LevelWarn, "warning: "},
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{slog.LevelError, "error: "},
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{slog.LevelError + 4, "error: "},
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}
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for _, tc := range tests {
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if got := humanLevel(tc.level); got != tc.want {
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t.Errorf("humanLevel(%v) = %q, want %q", tc.level, got, tc.want)
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}
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}
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}
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func TestHumanHandlerInfoNoPrefix(t *testing.T) {
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var buf strings.Builder
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h := newHumanHandler(&buf, slog.LevelDebug)
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slog.New(h).Info("hello world")
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if got := strings.TrimRight(buf.String(), "\n"); got != "hello world" {
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t.Errorf("got %q, want %q", got, "hello world")
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}
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}
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func TestHumanHandlerPrefixes(t *testing.T) {
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tests := []struct {
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fn func(*slog.Logger, string, ...any)
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want string
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}{
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{(*slog.Logger).Warn, "warning: "},
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{(*slog.Logger).Error, "error: "},
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}
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for _, tc := range tests {
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var buf strings.Builder
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log := slog.New(newHumanHandler(&buf, slog.LevelDebug))
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tc.fn(log, "msg")
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if !strings.HasPrefix(buf.String(), tc.want) {
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t.Errorf("got %q, want prefix %q", buf.String(), tc.want)
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}
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}
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}
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func TestHumanHandlerAttrs(t *testing.T) {
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var buf strings.Builder
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slog.New(newHumanHandler(&buf, slog.LevelDebug)).Info("started", "port", 8080)
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want := "started port=8080\n"
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if got := buf.String(); got != want {
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t.Errorf("got %q, want %q", got, want)
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}
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}
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func TestHumanHandlerStringQuoting(t *testing.T) {
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var buf strings.Builder
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slog.New(newHumanHandler(&buf, slog.LevelDebug)).Warn("check", "msg", "Hello, Gopher!")
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if !strings.Contains(buf.String(), `msg="Hello, Gopher!"`) {
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t.Errorf("expected quoted value in %q", buf.String())
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}
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}
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func TestHumanHandlerWithAttrs(t *testing.T) {
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var buf strings.Builder
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h := newHumanHandler(&buf, slog.LevelDebug).WithAttrs([]slog.Attr{slog.String("rid", "abc")})
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slog.New(h).Info("request")
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if !strings.Contains(buf.String(), "rid=abc") {
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t.Errorf("pre-set attr missing: %q", buf.String())
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}
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}
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func TestHumanHandlerLevelFiltering(t *testing.T) {
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var buf strings.Builder
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log := slog.New(newHumanHandler(&buf, slog.LevelWarn))
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log.Info("dropped")
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log.Warn("kept")
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if strings.Contains(buf.String(), "dropped") {
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t.Error("INFO line should have been filtered at WARN level")
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}
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if !strings.Contains(buf.String(), "kept") {
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t.Error("WARN line should appear")
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}
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}
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func TestMultiHandlerFanOut(t *testing.T) {
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var screen, file strings.Builder
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// screen: INFO+, file: DEBUG+
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m := multiHandler{
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newHumanHandler(&screen, slog.LevelInfo),
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slog.NewJSONHandler(&file, &slog.HandlerOptions{Level: slog.LevelDebug}),
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}
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log := slog.New(m)
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log.Debug("trace", "k", "v")
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log.Info("event", "k", "v")
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if strings.Contains(screen.String(), "trace") {
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t.Error("DEBUG should not appear on screen")
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}
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if !strings.Contains(screen.String(), "event") {
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t.Error("INFO should appear on screen")
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}
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if !strings.Contains(file.String(), "trace") {
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t.Error("DEBUG should appear in file")
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}
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if !strings.Contains(file.String(), "event") {
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t.Error("INFO should appear in file")
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}
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}
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