exceptions.js
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exceptions.js
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	import { test, testDeep, summary } from './helpers.js';

	console.log('Exception Tests\n');

	let result1 = 'not caught';
	try {
	throw new Error('test error');
	result1 = 'should not reach';
	} catch (e) {
	result1 = 'caught: ' + e.message;
	}
	test('basic try-catch', result1, 'caught: test error');

	let result2 = 'initial';
	try {
	result2 = 'no error';
	} catch (e) {
	result2 = 'caught';
	}
	test('try without exception', result2, 'no error');

	let result3 = [];
	try {
	result3.push('try');
	throw new Error('error');
	} catch (e) {
	result3.push('catch');
	} finally {
	result3.push('finally');
	}
	testDeep('try-catch-finally', result3, ['try', 'catch', 'finally']);

	let result4 = [];
	try {
	result4.push('try');
	} finally {
	result4.push('finally');
	}
	testDeep('try-finally no error', result4, ['try', 'finally']);

	let result5 = 'not caught';
	try {
	throw 'error string';
	} catch {
	result5 = 'caught without binding';
	}
	test('catch without binding', result5, 'caught without binding');

	let result6 = [];
	try {
	result6.push('outer try');
	try {
	result6.push('inner try');
	throw new Error('inner error');
	} catch (e) {
	result6.push('inner catch');
	}
	result6.push('after inner');
	} catch (e) {
	result6.push('outer catch');
	}
	testDeep('nested try-catch', result6, ['outer try', 'inner try', 'inner catch', 'after inner']);

	let result7 = [];
	try {
	try {
	throw new Error('original');
	} catch (e) {
	result7.push('first catch');
	throw new Error('rethrown');
	}
	} catch (e) {
	result7.push('second catch: ' + e.message);
	}
	testDeep('rethrow', result7, ['first catch', 'second catch: rethrown']);

	function testFinallyReturn() {
	let x = [];
	try {
	x.push('try');
	return x;
	} finally {
	x.push('finally');
	}
	}
	testDeep('finally with return', testFinallyReturn(), ['try', 'finally']);

	try {
	throw new Error('test message');
	} catch (e) {
	test('error name', e.name, 'Error');
	test('error message', e.message, 'test message');
	}

	class CustomError extends Error {
	constructor(msg) {
	super(msg);
	this.name = 'CustomError';
	}
	}

	try {
	throw new CustomError('custom message');
	} catch (e) {
	test('custom error name', e.name, 'CustomError');
	test('custom error message', e.message, 'custom message');
	}

	let counter = 0;
	try {
	counter = 1;
	throw new Error('test');
	} catch (e) {
	counter = 2;
	} finally {
	counter = counter + 10;
	}
	test('finally modifies value', counter, 12);

	summary();

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