textui: Implement a custom dlog backend that uses x/text/message

1 files changed, 64 insertions, 0 deletions

diff --git a/lib/textui/log_test.go b/lib/textui/log_test.go
new file mode 100644
index 0000000..08eb38c
--- /dev/null
+++ b/lib/textui/log_test.go
@@ -0,0 +1,64 @@
+// Copyright (C) 2022  Luke Shumaker <lukeshu@lukeshu.com>
+//
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+package textui_test
+
+import (
+	"context"
+	"strings"
+	"testing"
+
+	"github.com/datawire/dlib/dlog"
+	"github.com/stretchr/testify/assert"
+
+	"git.lukeshu.com/btrfs-progs-ng/lib/textui"
+)
+
+func logLineRegexp(inner string) string {
+	return `[0-9]{4}-[0-9]{2}-[0-9]{2} [0-9]{2}:[0-9]{2}:[0-9]{2}\.[0-9]{4} ` + inner + ` \(from lib/textui/log_test\.go:[0-9]+\)\n`
+}
+
+func TestLogFormat(t *testing.T) {
+	var out strings.Builder
+	ctx := dlog.WithLogger(context.Background(), textui.NewLogger(&out, dlog.LogLevelTrace))
+	dlog.Debugf(ctx, "foo %d", 12345)
+	assert.Regexp(t,
+		`^`+logLineRegexp(`DBG : foo 12,345 :`)+`$`,
+		out.String())
+}
+
+func TestLogLevel(t *testing.T) {
+	var out strings.Builder
+	ctx := dlog.WithLogger(context.Background(), textui.NewLogger(&out, dlog.LogLevelInfo))
+	dlog.Error(ctx, "Error")
+	dlog.Warn(ctx, "Warn")
+	dlog.Info(ctx, "Info")
+	dlog.Debug(ctx, "Debug")
+	dlog.Trace(ctx, "Trace")
+	dlog.Trace(ctx, "Trace")
+	dlog.Debug(ctx, "Debug")
+	dlog.Info(ctx, "Info")
+	dlog.Warn(ctx, "Warn")
+	dlog.Error(ctx, "Error")
+	assert.Regexp(t,
+		`^`+
+			logLineRegexp(`ERR : Error :`)+
+			logLineRegexp(`WRN : Warn :`)+
+			logLineRegexp(`INF : Info :`)+
+			logLineRegexp(`INF : Info :`)+
+			logLineRegexp(`WRN : Warn :`)+
+			logLineRegexp(`ERR : Error :`)+
+			`$`,
+		out.String())
+}
+
+func TestLogField(t *testing.T) {
+	var out strings.Builder
+	ctx := dlog.WithLogger(context.Background(), textui.NewLogger(&out, dlog.LogLevelInfo))
+	ctx = dlog.WithField(ctx, "foo", 12345)
+	dlog.Info(ctx, "msg")
+	assert.Regexp(t,
+		`^`+logLineRegexp(`INF : msg : foo=12,345`)+`$`,
+		out.String())
+}