50 lines
1.4 KiB
TypeScript
50 lines
1.4 KiB
TypeScript
// This program has been developed by students from the bachelor Computer Science at Utrecht
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// University within the Software Project course.
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// © Copyright Utrecht University (Department of Information and Computing Sciences)
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// Adds jest-dom matchers for React testing library
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import '@testing-library/jest-dom';
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// Minimal browser API mocks for the test environment.
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// Fetch
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if (!globalThis.fetch) {
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globalThis.fetch = jest.fn(async () => ({
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ok: true,
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status: 200,
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json: async () => [],
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text: async () => '',
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})) as unknown as typeof fetch;
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}
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// EventSource
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if (!globalThis.EventSource) {
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class MockEventSource {
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url: string;
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readyState = 1;
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onmessage: ((event: MessageEvent) => void) | null = null;
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onerror: ((event: Event) => void) | null = null;
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onopen: ((event: Event) => void) | null = null;
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constructor(url: string) {
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this.url = url;
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}
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close() {
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this.readyState = 2;
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}
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addEventListener(type: string, listener: (event: MessageEvent) => void) {
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if (type === 'message') {
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this.onmessage = listener;
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}
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}
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removeEventListener(type: string, listener: (event: MessageEvent) => void) {
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if (type === 'message' && this.onmessage === listener) {
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this.onmessage = null;
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}
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}
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}
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globalThis.EventSource = MockEventSource as unknown as typeof EventSource;
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}
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