Diffusion Ant (feature/nursery) Code

ant/tests/test_uri.js
ddfe6237cab5feature/nursery

test_uri.js
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			console.log('=== URI Encoding/Decoding Tests ===\n');

			let passed = 0;
			let failed = 0;

			function test(name, actual, expected) {
			if (actual === expected) {
			console.log(`✓ ${name}`);
			passed++;
			} else {
			console.log(`✗ ${name}`);
			console.log(` Expected: ${expected}`);
			console.log(` Actual: ${actual}`);
			failed++;
			}
			}

			function testThrows(name, fn) {
			try {
			fn();
			console.log(`✗ ${name} (expected to throw)`);
			failed++;
			} catch (e) {
			console.log(`✓ ${name} (threw)`);
			passed++;
			}
			}

			// encodeURIComponent tests
			console.log('\n--- encodeURIComponent ---');
			test('encodes space', encodeURIComponent(' '), '%20');
			test('encodes special chars', encodeURIComponent('hello world!'), 'hello%20world!');
			test('preserves unreserved', encodeURIComponent('abc123'), 'abc123');
			test('preserves unreserved marks', encodeURIComponent("-_.!~'()"), "-_.!~'()");
			test('encodes reserved chars', encodeURIComponent(';/?:@&=+$,#'), '%3B%2F%3F%3A%40%26%3D%2B%24%2C%23');
			test('encodes Cyrillic', encodeURIComponent('шеллы'), '%D1%88%D0%B5%D0%BB%D0%BB%D1%8B');
			test('encodes Chinese', encodeURIComponent('中文'), '%E4%B8%AD%E6%96%87');
			test('encodes emoji', encodeURIComponent('😀'), '%F0%9F%98%80');
			test('empty string', encodeURIComponent(''), '');

			// encodeURI tests
			console.log('\n--- encodeURI ---');
			test('preserves URI structure', encodeURI('https://example.com/path?q=hello world'), 'https://example.com/path?q=hello%20world');
			test('preserves reserved chars', encodeURI(';/?:@&=+$,#'), ';/?:@&=+$,#');
			test('encodes space', encodeURI('hello world'), 'hello%20world');
			test('encodes Cyrillic in URL', encodeURI('https://mozilla.org/?x=шеллы'), 'https://mozilla.org/?x=%D1%88%D0%B5%D0%BB%D0%BB%D1%8B');
			test('empty string', encodeURI(''), '');

			// decodeURIComponent tests
			console.log('\n--- decodeURIComponent ---');
			test('decodes space', decodeURIComponent('%20'), ' ');
			test('decodes special chars', decodeURIComponent('hello%20world%21'), 'hello world!');
			test('decodes Cyrillic', decodeURIComponent('%D1%88%D0%B5%D0%BB%D0%BB%D1%8B'), 'шеллы');
			test('decodes Chinese', decodeURIComponent('%E4%B8%AD%E6%96%87'), '中文');
			test('decodes emoji', decodeURIComponent('%F0%9F%98%80'), '😀');
			test('decodes reserved chars', decodeURIComponent('%3B%2F%3F%3A%40%26%3D%2B%24%2C%23'), ';/?:@&=+$,#');
			test('passes through plain text', decodeURIComponent('hello'), 'hello');
			test('empty string', decodeURIComponent(''), '');
			test('mixed encoded/plain', decodeURIComponent('hello%20world'), 'hello world');

			// decodeURI tests
			console.log('\n--- decodeURI ---');
			test(
			'decodes URL with Cyrillic',
			decodeURI('https://developer.mozilla.org/ru/docs/JavaScript_%D1%88%D0%B5%D0%BB%D0%BB%D1%8B'),
			'https://developer.mozilla.org/ru/docs/JavaScript_шеллы'
			);
			test('preserves encoded reserved', decodeURI('https://example.com/docs/JavaScript%3A%20test'), 'https://example.com/docs/JavaScript%3A test');
			test('decodes non-reserved', decodeURI('hello%20world'), 'hello world');
			test('empty string', decodeURI(''), '');

			// decodeURI vs decodeURIComponent comparison
			console.log('\n--- decodeURI vs decodeURIComponent ---');
			const encoded = 'https://developer.mozilla.org/docs/JavaScript%3A%20a_scripting_language';
			test('decodeURI preserves %3A', decodeURI(encoded), 'https://developer.mozilla.org/docs/JavaScript%3A a_scripting_language');
			test('decodeURIComponent decodes %3A', decodeURIComponent(encoded), 'https://developer.mozilla.org/docs/JavaScript: a_scripting_language');

			// Error cases
			console.log('\n--- Error cases ---');
			testThrows('decodeURIComponent invalid sequence', () => decodeURIComponent('%E0%A4%A'));
			testThrows('decodeURI invalid sequence', () => decodeURI('%E0%A4%A'));
			testThrows('decodeURIComponent incomplete %', () => decodeURIComponent('%'));
			testThrows('decodeURIComponent incomplete %X', () => decodeURIComponent('%2'));
			testThrows('decodeURIComponent invalid hex', () => decodeURIComponent('%GG'));

			// Round-trip tests
			console.log('\n--- Round-trip tests ---');
			const testStrings = ['hello world', 'foo=bar&baz=qux', 'шеллы', '中文测试', 'emoji: 😀🎉', 'special: !@#$%^&*()', 'path/to/file.txt'];

			for (const str of testStrings) {
			const encoded = encodeURIComponent(str);
			const decoded = decodeURIComponent(encoded);
			test(`round-trip: "${str}"`, decoded, str);
			}

			// Summary
			console.log('\n=== Summary ===');
			console.log(`Passed: ${passed}`);
			console.log(`Failed: ${failed}`);

			if (failed > 0) process.exit(1);

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