How to use the apollo-link-batch.BatchLink.mock function in apollo-link-batch
To help you get started, we’ve selected a few apollo-link-batch examples, based on popular ways it is used in public projects.
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apollographql / apollo-link / packages / apollo-link-batch-http / src / __tests__ / batchHttpLink.ts View on Github 
const batchKey = () => 'hi';
const batchHandler = operations => Observable.of();
const batch = new LocalScopedLink({
batchInterval: 20,
batchMax: 20,
batchKey,
batchHandler,
});
const {
batchInterval,
batchMax,
batchKey: batchKeyArg,
} = BatchLink.mock.calls[0][0];
expect(batchInterval).toBe(20);
expect(batchMax).toBe(20);
expect(batchKeyArg()).toEqual(batchKey());
});apollo-link-batch
Apollo Link that performs batching and operation on batched Operations
