TanTan
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52 lines
1.4 KiB
Plaintext
52 lines
1.4 KiB
Plaintext
'use strict';
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var test = require('tape');
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var stopIterationIterator = require('../');
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test('stopIterationIterator', function (t) {
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t.equal(typeof stopIterationIterator, 'function', 'stopIterationIterator is a function');
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t.test('no StopIteration support', { skip: typeof StopIteration === 'object' }, function (st) {
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st['throws'](
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// @ts-expect-error
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function () { stopIterationIterator(); },
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SyntaxError,
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'throws a SyntaxError when StopIteration is not supported'
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);
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st.end();
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});
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t.test('StopIteration support', { skip: typeof StopIteration !== 'object' }, function (st) {
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// eslint-disable-next-line no-extra-parens
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var s = /** @type {Set<number> & { iterator(): SetIterator<number>}} */ (new Set([1, 2]));
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var i = s.iterator();
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st.equal(i.next(), 1, 'first item is 1');
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st.equal(i.next(), 2, 'second item is 2');
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try {
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i.next();
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st.fail();
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} catch (e) {
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st.equal(e, StopIteration, 'StopIteration thrown');
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}
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// eslint-disable-next-line no-extra-parens
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var m = /** @type {Map<number, string> & { iterator(): MapIterator<[string, number]>}} */ (new Map([[1, 'a'], [2, 'b']]));
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var mi = m.iterator();
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st.deepEqual(mi.next(), [1, 'a'], 'first item is 1 and a');
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st.deepEqual(mi.next(), [2, 'b'], 'second item is 2 and b');
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try {
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mi.next();
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st.fail();
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} catch (e) {
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st.equal(e, StopIteration, 'StopIteration thrown');
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}
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st.end();
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});
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t.end();
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});
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