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metamask-extension/app/scripts/controllers/network/createInfuraClient.test.js

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Add tests for custom JSON-RPC network client (#16337) Previously we had written tests for `createInfuraClient`, which creates a middleware stack designed to connect to an Infura provider. These tests exercise various RPC methods that relate to the behavior that the middleware provides (mainly around caching). Now we need to write the same tests but for `createJsonRpcClient`, which creates a middleware stack designed to connect to a non-Infura RPC endpoint. To do this, we had to: - Consolidate the tests for both types of RPC client into a single test file. - Add conditions around tests or assertions in tests to account for differences in behavior between the two sets of middleware stacks. - Relocate code in `createJsonRpcClient` which slows down `eth_estimateGas` calls just for tests so that this behavior can be disabled in the network client tests. Eventually, as we unify the network controllers in this repo and in the core repo, we will move these tests into the core repo. Co-authored-by: Elliot Winkler <elliot.winkler@gmail.com>
2023-01-06 18:10:17 +01:00
import { testsForProviderType } from './provider-api-tests/shared-tests';
Add initial provider API tests for Infura client (#15556) We are working on migrating the extension to a unified network controller, but before we do so we want to extract some of the existing pieces, specifically `createInfuraClient` and `createJsonRpcClient`, which provide the majority of the behavior exhibited within the provider API that the existing NetworkController exposes. This necessitates that we understand and test that behavior as a whole. With that in mind, this commit starts with the Infura-specific network client and adds some initial functional tests for `createInfuraClient`, specifically covering three pieces of middleware provided by `eth-json-rpc-middleware`: `createNetworkAndChainIdMiddleware`, `createBlockCacheMiddleware`, and `createBlockRefMiddleware`. These tests exercise logic that originate from multiple different places and combine in sometimes surprising ways, and as a result, understanding the nature of the tests can be tricky. I've tried to explain the logic (both of the implementation and the tests) via comments. Additionally, debugging why a certain test is failing is not the most fun thing in the world, so to aid with this, I've added some logging to the underlying packages used when a request passes through the middleware stack. Because some middleware change the request being made, or make new requests altogether, this greatly helps to peel back the curtain, as failures from Nock do not supply much meaningful information on their own. This logging is disabled by default, but can be activated by setting `DEBUG=metamask:*,eth-query DEBUG_COLORS=1` alongside the `jest` command. We use this logging by bumping `eth-block-tracker`, and `eth-json-rpc-middleware`.
2022-09-16 15:18:33 +02:00
describe('createInfuraClient', () => {
Add tests for custom JSON-RPC network client (#16337) Previously we had written tests for `createInfuraClient`, which creates a middleware stack designed to connect to an Infura provider. These tests exercise various RPC methods that relate to the behavior that the middleware provides (mainly around caching). Now we need to write the same tests but for `createJsonRpcClient`, which creates a middleware stack designed to connect to a non-Infura RPC endpoint. To do this, we had to: - Consolidate the tests for both types of RPC client into a single test file. - Add conditions around tests or assertions in tests to account for differences in behavior between the two sets of middleware stacks. - Relocate code in `createJsonRpcClient` which slows down `eth_estimateGas` calls just for tests so that this behavior can be disabled in the network client tests. Eventually, as we unify the network controllers in this repo and in the core repo, we will move these tests into the core repo. Co-authored-by: Elliot Winkler <elliot.winkler@gmail.com>
2023-01-06 18:10:17 +01:00
testsForProviderType('infura');
Add initial provider API tests for Infura client (#15556) We are working on migrating the extension to a unified network controller, but before we do so we want to extract some of the existing pieces, specifically `createInfuraClient` and `createJsonRpcClient`, which provide the majority of the behavior exhibited within the provider API that the existing NetworkController exposes. This necessitates that we understand and test that behavior as a whole. With that in mind, this commit starts with the Infura-specific network client and adds some initial functional tests for `createInfuraClient`, specifically covering three pieces of middleware provided by `eth-json-rpc-middleware`: `createNetworkAndChainIdMiddleware`, `createBlockCacheMiddleware`, and `createBlockRefMiddleware`. These tests exercise logic that originate from multiple different places and combine in sometimes surprising ways, and as a result, understanding the nature of the tests can be tricky. I've tried to explain the logic (both of the implementation and the tests) via comments. Additionally, debugging why a certain test is failing is not the most fun thing in the world, so to aid with this, I've added some logging to the underlying packages used when a request passes through the middleware stack. Because some middleware change the request being made, or make new requests altogether, this greatly helps to peel back the curtain, as failures from Nock do not supply much meaningful information on their own. This logging is disabled by default, but can be activated by setting `DEBUG=metamask:*,eth-query DEBUG_COLORS=1` alongside the `jest` command. We use this logging by bumping `eth-block-tracker`, and `eth-json-rpc-middleware`.
2022-09-16 15:18:33 +02:00
});
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