test(log): add unit test for pkg/log

pkg/log/log_test.go

@@ -0,0 +1,73 @@
+package log
+
+import (
+	"log/slog"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestParseLevel(t *testing.T) {
+	for _, tc := range []struct {
+		name        string
+		lvl         string
+		parsedLevel slog.Level
+		hasErr      bool
+	}{
+		{
+			name:        "Empty string",
+			lvl:         "",
+			parsedLevel: 0,
+			hasErr:      true,
+		},
+		{
+			name:        "Uppercase level",
+			lvl:         "DEBUG",
+			parsedLevel: DebugLevel,
+			hasErr:      false,
+		},
+		{
+			name:        "Debug",
+			lvl:         "debug",
+			parsedLevel: DebugLevel,
+			hasErr:      false,
+		},
+		{
+			name:        "Info",
+			lvl:         "info",
+			parsedLevel: InfoLevel,
+			hasErr:      false,
+		},
+		{
+			name:        "Warn",
+			lvl:         "warn",
+			parsedLevel: WarnLevel,
+			hasErr:      false,
+		},
+		{
+			name:        "Error",
+			lvl:         "error",
+			parsedLevel: ErrorLevel,
+			hasErr:      false,
+		},
+		{
+			name:        "Unsupported level",
+			lvl:         "XXX",
+			parsedLevel: 0,
+			hasErr:      true,
+		},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			l, err := ParseLevel(tc.lvl)
+
+			assert.Equal(t, tc.parsedLevel, l)
+
+			if tc.hasErr {
+				assert.NotNil(t, err)
+				assert.ErrorContains(t, err, "unrecognized level: ")
+			} else {
+				assert.Nil(t, err)
+			}
+		})
+	}
+}