test: improve slog coverage (#1347)

Improving test coverage on slog package.

Refs #1333

exp/zapslog/handler_test.go

@@ -25,6 +25,7 @@ package zapslog
 import (
 	"log/slog"
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
@@ -69,6 +70,20 @@ func TestAddStack(t *testing.T) {
 	)
 }
 
+func TestAddStackSkip(t *testing.T) {
+	fac, logs := observer.New(zapcore.DebugLevel)
+	sl := slog.New(NewHandler(fac, AddStacktraceAt(slog.LevelDebug), WithCallerSkip(1)))
+	sl.Info("msg")
+
+	require.Len(t, logs.AllUntimed(), 1, "Expected exactly one entry to be logged")
+	entry := logs.AllUntimed()[0]
+	assert.Regexp(t,
+		`src/testing/testing.go:\d+`,
+		entry.Stack,
+		"Unexpected stack trace annotation.",
+	)
+}
+
 func TestEmptyAttr(t *testing.T) {
 	t.Parallel()
 
@@ -99,3 +114,66 @@ func TestEmptyAttr(t *testing.T) {
 		}, logs[0].ContextMap(), "Unexpected context")
 	})
 }
+
+func TestWithName(t *testing.T) {
+	t.Parallel()
+	fac, observedLogs := observer.New(zapcore.DebugLevel)
+	t.Run("default", func(t *testing.T) {
+		sl := slog.New(NewHandler(fac))
+		sl.Info("msg")
+
+		logs := observedLogs.TakeAll()
+		require.Len(t, logs, 1, "Expected exactly one entry to be logged")
+		entry := logs[0]
+		assert.Equal(t, "", entry.LoggerName, "Unexpected logger name")
+	})
+	t.Run("with name", func(t *testing.T) {
+		sl := slog.New(NewHandler(fac, WithName("test-name")))
+		sl.Info("msg")
+
+		logs := observedLogs.TakeAll()
+		require.Len(t, logs, 1, "Expected exactly one entry to be logged")
+		entry := logs[0]
+		assert.Equal(t, "test-name", entry.LoggerName, "Unexpected logger name")
+	})
+}
+
+type Token string
+
+func (Token) LogValue() slog.Value {
+	return slog.StringValue("REDACTED_TOKEN")
+}
+
+func TestAttrKinds(t *testing.T) {
+	fac, logs := observer.New(zapcore.DebugLevel)
+	sl := slog.New(NewHandler(fac))
+	testToken := Token("no")
+	sl.Info(
+		"msg",
+		slog.Bool("bool", true),
+		slog.Duration("duration", time.Hour),
+		slog.Float64("float64", 42.0),
+		slog.Int64("int64", -1234),
+		slog.Time("time", time.Date(2015, 10, 21, 7, 28, 00, 0, time.UTC)),
+		slog.Uint64("uint64", 2),
+		slog.Group("group", slog.String("inner", "inner-group")),
+		"logvaluer", testToken,
+		"any", "what am i?",
+	)
+
+	require.Len(t, logs.AllUntimed(), 1, "Expected exactly one entry to be logged")
+	entry := logs.AllUntimed()[0]
+	assert.Equal(t,
+		map[string]any{
+			"bool":      true,
+			"duration":  time.Hour,
+			"float64":   float64(42),
+			"group":     map[string]any{"inner": "inner-group"},
+			"int64":     int64(-1234),
+			"time":      time.Date(2015, time.October, 21, 7, 28, 0, 0, time.UTC),
+			"uint64":    uint64(2),
+			"logvaluer": "REDACTED_TOKEN",
+			"any":       "what am i?",
+		},
+		entry.ContextMap())
+}