LionelB5
/ MockedLink.ts
Last active
March 10, 2025 19:28
Apollo Client V3 link that supports mocking GraphQL subscriptions, mutations and queries. Particularly useful when testing components that rely on queries/mutations that execute concurrently to subscriptions that must be mocked.
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| import type { FetchResult, Operation } from "@apollo/client"; | |
| import { Observable } from "@apollo/client"; | |
| import { MockLink } from "@apollo/client/testing"; | |
| import type { Observer } from "@apollo/client/utilities"; | |
| // Apollo Client's out of the box utilities for testing subscriptions are limited: | |
| // - The `mocks` argument provided to Apollo's `MockedProvider` is only capable of mocking a | |
| // single subscription payload per subscription. | |
| // - Apollo's `MockSubscriptionLink` can be used to mock multiple subscription payloads via | |
| // a `simulateResult` method. However, the `simulateResult` method delivers data to _every_ |
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| // Find a Solana address matching an arbitrary criteria that is based on: | |
| // - Address's last activity | |
| // - Balance of the address | |
| // | |
| // Script is rough and quickly put together, use at your own risk. Intended to be run in a Deno notebook. | |
| import { Connection, PublicKey } from "npm:@solana/web3.js@latest"; | |
| const RPC_ENDPOINT = "https://api.mainnet-beta.solana.com"; | |
| const MIN_BALANCE = 20 * 1e9; // 20 SOL in lamports |