Method error

tests/test-key-value-store.py:111–114

(self, name, exc)

        print(f"  ✗ {name}: expected {expected!r}, got {actual!r}")

    def error(self, name, exc):
        self.failed += 1
        self.errors.append((name, "no error", str(exc)))
        print(f"  ✗ {name}: {exc}")

    def summary(self):
        total = self.passed + self.failed