Add tests for context with slog

Author: thockin

context_slog_test.go

@@ -0,0 +1,66 @@
+//go:build go1.21
+// +build go1.21
+
+/*
+Copyright 2021 The logr Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package logr
+
+import (
+	"context"
+	"log/slog"
+	"os"
+	"testing"
+)
+
+func TestContextWithSlog(t *testing.T) {
+	ctx := context.Background()
+
+	if out := FromContextAsSlogLogger(ctx); out != nil {
+		t.Errorf("expected no logger, got %#v", out)
+	}
+
+	// Write as slog...
+	slogger := slog.New(slog.NewJSONHandler(os.Stderr, nil))
+	sctx := NewContextWithSlogLogger(ctx, slogger)
+
+	// ...read as logr
+	if out, err := FromContext(sctx); err != nil {
+		t.Errorf("unexpected error: %v", err)
+	} else if _, ok := out.sink.(*slogSink); !ok {
+		t.Errorf("expected output to be type *logr.slogSink, got %T", out.sink)
+	}
+
+	// ...read as slog
+	if out := FromContextAsSlogLogger(sctx); out == nil {
+		t.Errorf("expected a *slog.JSONHandler, got nil")
+	} else if _, ok := out.Handler().(*slog.JSONHandler); !ok {
+		t.Errorf("expected output to be type *slog.JSONHandler, got %T", out.Handler())
+	}
+
+	// Write as logr...
+	logger := Discard()
+	lctx := NewContext(ctx, logger)
+
+	// ...read as slog
+	if out := FromContextAsSlogLogger(lctx); out == nil {
+		t.Errorf("expected a *log.slogHandler, got nil")
+	} else if _, ok := out.Handler().(*slogHandler); !ok {
+		t.Errorf("expected output to be type *logr.slogHandler, got %T", out.Handler())
+	}
+
+	// ...read as logr is covered in the non-slog test
+}

context_test.go

@@ -0,0 +1,50 @@
+/*
+Copyright 2021 The logr Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package logr
+
+import (
+	"context"
+	"testing"
+)
+
+func TestContext(t *testing.T) {
+	ctx := context.Background()
+
+	if out, err := FromContext(ctx); err == nil {
+		t.Errorf("expected error, got %#v", out)
+	} else if _, ok := err.(notFoundError); !ok {
+		t.Errorf("expected a notFoundError, got %#v", err)
+	}
+
+	out := FromContextOrDiscard(ctx)
+	if out.sink != nil {
+		t.Errorf("expected a nil sink, got %#v", out)
+	}
+
+	sink := &testLogSink{}
+	logger := New(sink)
+	lctx := NewContext(ctx, logger)
+	if out, err := FromContext(lctx); err != nil {
+		t.Errorf("unexpected error: %v", err)
+	} else if p, _ := out.sink.(*testLogSink); p != sink {
+		t.Errorf("expected output to be the same as input, got in=%p, out=%p", sink, p)
+	}
+	out = FromContextOrDiscard(lctx)
+	if p, _ := out.sink.(*testLogSink); p != sink {
+		t.Errorf("expected output to be the same as input, got in=%p, out=%p", sink, p)
+	}
+}

logr_test.go

@@ -17,7 +17,6 @@ limitations under the License.
 package logr
 
 import (
-	"context"
 	"errors"
 	"fmt"
 	"reflect"
@@ -414,34 +413,6 @@ func TestWithCallDepthIncremental(t *testing.T) {
 	}
 }
 
-func TestContext(t *testing.T) {
-	ctx := context.TODO()
-
-	if out, err := FromContext(ctx); err == nil {
-		t.Errorf("expected error, got %#v", out)
-	} else if _, ok := err.(notFoundError); !ok {
-		t.Errorf("expected a notFoundError, got %#v", err)
-	}
-
-	out := FromContextOrDiscard(ctx)
-	if out.sink != nil {
-		t.Errorf("expected a nil sink, got %#v", out)
-	}
-
-	sink := &testLogSink{}
-	logger := New(sink)
-	lctx := NewContext(ctx, logger)
-	if out, err := FromContext(lctx); err != nil {
-		t.Errorf("unexpected error: %v", err)
-	} else if p, _ := out.sink.(*testLogSink); p != sink {
-		t.Errorf("expected output to be the same as input, got in=%p, out=%p", sink, p)
-	}
-	out = FromContextOrDiscard(lctx)
-	if p, _ := out.sink.(*testLogSink); p != sink {
-		t.Errorf("expected output to be the same as input, got in=%p, out=%p", sink, p)
-	}
-}
-
 func TestIsZero(t *testing.T) {
 	var l Logger
 	if !l.IsZero() {