Add output examples

Author: nhooyr

examples_test.go

@@ -12,7 +12,7 @@ func Example_stderr() {
 	ctx := context.Background()
 	stderrlog.Info(ctx, "my message here",
 		slog.F("field_name", "something or the other"),
-		slog.F("some_map", map[string]string{
+		slog.F("some_map", map[string]interface{}{
 			"nested_fields": "wowow",
 		}),
 		slog.F("some slice", []interface{}{
@@ -22,7 +22,25 @@ func Example_stderr() {
 			true,
 		}),
 		slog.Component("test"),
+
+		slog.F("name", slog.ValueFunc(func() interface{} {
+			return "wow"
+		})),
 	)
+
+	// test_test.go:38: Sep 06 14:04:33.028 [INFO]: my_message_here
+	//	field_name: something or the other
+	//	some_map:
+	//	  nested_fields: wowow
+	//	error:
+	//	  - msg: wrap2
+	//	    loc: /Users/nhooyr/src/cdr/slog/test_test.go:43
+	//	    fun: go.coder.com/slog_test.TestExampleStderr
+	//	  - msg: wrap1
+	//	    loc: /Users/nhooyr/src/cdr/slog/test_test.go:44
+	//	    fun: go.coder.com/slog_test.TestExampleStderr
+	//	  - EOF
+	//	name: wow
 }
 
 func Example_test() {
@@ -46,4 +64,19 @@ func Example_test() {
 			return "wow"
 		})),
 	)
+
+	// --- PASS: TestExampleTest (0.00s)
+	//    test_test.go:16: Sep 06 14:04:08.947 [INFO]: my_message_here
+	//        field_name: something or the other
+	//        some_map:
+	//          nested_fields: wowow
+	//        error:
+	//          - msg: wrap2
+	//            loc: /Users/nhooyr/src/cdr/slog/test_test.go:21
+	//            fun: go.coder.com/slog_test.TestExampleTest
+	//          - msg: wrap1
+	//            loc: /Users/nhooyr/src/cdr/slog/test_test.go:22
+	//            fun: go.coder.com/slog_test.TestExampleTest
+	//          - EOF
+	//        name: wow
 }

fields.go

@@ -26,10 +26,13 @@ type parsedFields struct {
 
 func parseFields(fields []Field) parsedFields {
 	var l parsedFields
-	l.fields = make(fieldMap, len(fields))
+	l.fields = make(fieldMap, 0, len(fields))
 
-	for i := 0; i < len(fields); i++ {
-		f := fields[i]
+	for _, f := range fields {
+		if s, ok := f.(componentField); ok {
+			l.appendComponent(string(s))
+			continue
+		}
 		l = l.appendField(f.LogKey(), f.LogValue())
 	}
 

test_test.go

@@ -1,14 +1,54 @@
 package slog_test
 
 import (
+	"context"
 	"go.coder.com/slog"
+	"go.coder.com/slog/stderrlog"
 	"go.coder.com/slog/testlog"
 	"golang.org/x/xerrors"
+	"io"
 	"testing"
 )
 
-func TestTest(t *testing.T) {
-	testlog.Info(t, "wow",
-		slog.Error(xerrors.Errorf("wow")),
+func TestExampleStderr(t *testing.T) {
+	t.Parallel()
+
+	ctx := context.Background()
+	stderrlog.Info(ctx, "my message here",
+		slog.F("field_name", "something or the other"),
+		slog.F("some_map", map[string]interface{}{
+			"nested_fields": "wowow",
+		}),
+		slog.Error(xerrors.Errorf("wrap2: %w",
+			xerrors.Errorf("wrap1: %w",
+				io.EOF,
+			),
+		)),
+		slog.Component("test"),
+
+		slog.F("name", slog.ValueFunc(func() interface{} {
+			return "wow"
+		})),
+	)
+}
+
+func TestExampleTest(t *testing.T) {
+	t.Parallel()
+
+	testlog.Info(t, "my message here",
+		slog.F("field_name", "something or the other"),
+		slog.F("some_map", map[string]interface{}{
+			"nested_fields": "wowow",
+		}),
+		slog.Error(xerrors.Errorf("wrap2: %w",
+			xerrors.Errorf("wrap1: %w",
+				io.EOF,
+			),
+		)),
+		slog.Component("test"),
+
+		slog.F("name", slog.ValueFunc(func() interface{} {
+			return "wow"
+		})),
 	)
 }