fix: return level.go

Signed-off-by: Musilah <[email protected]>

logger/level.go

@@ -0,0 +1,23 @@
+// Copyright (c) Abstract Machines
+// SPDX-License-Identifier: Apache-2.0
+
+package logger
+
+import (
+	"errors"
+	"log/slog"
+)
+
+// ErrInvalidLogLevel indicates an unrecognized log level.
+var ErrInvalidLogLevel = errors.New("unrecognized log level")
+
+// UnmarshalText is a helper function to convert text to slog's Level type.
+func UnmarshalText(text string) (slog.Level, error) {
+	var level slog.Level
+
+	err := level.UnmarshalText([]byte(text))
+	if err != nil {
+		return 0, ErrInvalidLogLevel
+	}
+	return level, nil
+}

logger/level_test.go

@@ -0,0 +1,88 @@
+// Copyright (c) Abstract Machines
+// SPDX-License-Identifier: Apache-2.0
+
+package logger
+
+import (
+	"fmt"
+	"log/slog"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestUnmarshalText(t *testing.T) {
+	cases := []struct {
+		desc   string
+		input  string
+		output slog.Level
+		err    error
+	}{
+		{
+			desc:   "select log level Not_A_Level",
+			input:  "Not_A_Level",
+			output: 0,
+			err:    ErrInvalidLogLevel,
+		},
+		{
+			desc:   "select log level Bad_Input",
+			input:  "Bad_Input",
+			output: 0,
+			err:    ErrInvalidLogLevel,
+		},
+		{
+			desc:   "select log level debug",
+			input:  "debug",
+			output: slog.LevelDebug,
+			err:    nil,
+		},
+		{
+			desc:   "select log level DEBUG",
+			input:  "DEBUG",
+			output: slog.LevelDebug,
+			err:    nil,
+		},
+		{
+			desc:   "select log level info",
+			input:  "info",
+			output: slog.LevelInfo,
+			err:    nil,
+		},
+		{
+			desc:   "select log level INFO",
+			input:  "INFO",
+			output: slog.LevelInfo,
+			err:    nil,
+		},
+		{
+			desc:   "select log level warn",
+			input:  "warn",
+			output: slog.LevelWarn,
+			err:    nil,
+		},
+		{
+			desc:   "select log level WARN",
+			input:  "WARN",
+			output: slog.LevelWarn,
+			err:    nil,
+		},
+		{
+			desc:   "select log level Error",
+			input:  "Error",
+			output: slog.LevelError,
+			err:    nil,
+		},
+		{
+			desc:   "select log level ERROR",
+			input:  "ERROR",
+			output: slog.LevelError,
+			err:    nil,
+		},
+	}
+
+	for _, tc := range cases {
+		level, err := UnmarshalText(tc.input)
+		assert.Equal(t, tc.output, level, fmt.Sprintf("%s: expected %s got %v", tc.desc, tc.output, level))
+		assert.Equal(t, tc.err, err, fmt.Sprintf("%s: expected %v got %v", tc.desc, tc.err, err))
+	}
+}