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30 lines
1.1 KiB
TypeScript
30 lines
1.1 KiB
TypeScript
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import { mockDeep } from "jest-mock-extended";
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/**
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* Mocks a chrome.runtime.Port set up to send messages through `postMessage` to `onMessage.addListener` callbacks.
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* @param name - The name of the port.
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* @param immediateOnConnectExecution - Whether to immediately execute the onConnect callbacks against the new port.
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* Defaults to false. If true, the creator of the port will not have had a chance to set up listeners yet.
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* @returns a mock chrome.runtime.Port
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*/
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export function mockPorts() {
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// notify listeners of a new port
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(chrome.runtime.connect as jest.Mock).mockImplementation((portInfo) => {
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const port = mockDeep<chrome.runtime.Port>();
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port.name = portInfo.name;
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// set message broadcast
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(port.postMessage as jest.Mock).mockImplementation((message) => {
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(port.onMessage.addListener as jest.Mock).mock.calls.forEach(([callbackFn]) => {
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callbackFn(message, port);
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});
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});
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(chrome.runtime.onConnect.addListener as jest.Mock).mock.calls.forEach(([callbackFn]) => {
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callbackFn(port);
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});
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return port;
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});
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}
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