File size: 2,308 Bytes
15c3607 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 | import { describe, expect, it } from 'vitest';
import { isAbortError } from '$lib/utils/abort';
describe('isAbortError', () => {
it('returns false for null, undefined and non-error values', () => {
expect(isAbortError(null)).toBe(false);
expect(isAbortError(undefined)).toBe(false);
expect(isAbortError('string error')).toBe(false);
expect(isAbortError({ name: 'AbortError' })).toBe(false);
expect(isAbortError(42)).toBe(false);
});
it('returns true for DOMException with AbortError name', () => {
const err = new DOMException('Operation was aborted', 'AbortError');
expect(isAbortError(err)).toBe(true);
});
it('returns true for plain Error with AbortError name', () => {
const err = new Error('aborted');
err.name = 'AbortError';
expect(isAbortError(err)).toBe(true);
});
it('returns false for unrelated Error instances', () => {
expect(isAbortError(new Error('something failed'))).toBe(false);
expect(isAbortError(new TypeError('not related'))).toBe(false);
expect(isAbortError(new RangeError('out of range'))).toBe(false);
});
it('recognizes Firefox TypeError "Error in input stream" emitted at page unload', () => {
expect(isAbortError(new TypeError('Error in input stream'))).toBe(true);
expect(isAbortError(new TypeError('TypeError: Error in input stream'))).toBe(true);
});
it('recognizes Safari "The network connection was lost" during transient drop', () => {
expect(isAbortError(new TypeError('The network connection was lost.'))).toBe(true);
});
it('recognizes Safari "Load failed" during page navigation', () => {
expect(isAbortError(new TypeError('Load failed'))).toBe(true);
});
it('does NOT recognize generic TypeError messages as aborts', () => {
// matching too broadly would hide real bugs, the predicate must stay conservative
expect(isAbortError(new TypeError('Failed to fetch'))).toBe(false);
expect(isAbortError(new TypeError('Cannot read property of undefined'))).toBe(false);
expect(isAbortError(new TypeError('NetworkError when attempting to fetch resource'))).toBe(
false
);
});
it('is case insensitive on the matched substrings', () => {
expect(isAbortError(new TypeError('error in INPUT STREAM'))).toBe(true);
expect(isAbortError(new TypeError('the network connection WAS LOST'))).toBe(true);
});
});
|