test: add formatHTTPStatus tests

internal/observability/status_test.go

@@ -0,0 +1,19 @@
+package observability
+
+import (
+	"testing"
+)
+
+func TestFormatHTTPStatusReturnsPlainWhenNoColor(t *testing.T) {
+	colorLogs = false
+	if got := formatHTTPStatus(200); got != "200" {
+		t.Fatalf("got %q, want %q", got, "200")
+	}
+}
+
+func TestFormatHTTPStatusReturnsFallback(t *testing.T) {
+	colorLogs = false
+	if got := formatHTTPStatus("ok"); got != "ok" {
+		t.Fatalf("got %q, want %q", got, "ok")
+	}
+}