package logger

import "testing"

func TestSanitizeJournalKey(t *testing.T) {
	tests := []struct {
		in, want string
	}{
		{"", ""},
		{"MESSAGE", "MESSAGE"},
		{"trace_id", "TRACE_ID"},
		{"span.id", "SPAN_ID"},
		{"http-method", "HTTP_METHOD"},
		{"a", "A"},
		{"123abc", "_123ABC"},
		{"weird!@#key", "WEIRD___KEY"},
		{"_leading", "_LEADING"},
		{"MiXeD_Case", "MIXED_CASE"},
	}
	for _, tt := range tests {
		t.Run(tt.in, func(t *testing.T) {
			got := sanitizeJournalKey(tt.in)
			if got != tt.want {
				t.Errorf("sanitizeJournalKey(%q) = %q, want %q", tt.in, got, tt.want)
			}
		})
	}
}