Diffusion Ant (feature/nursery) Code

ant/tests/string_methods.cjs
ddfe6237cab5feature/nursery

string_methods.cjs
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			// Test String methods functionality

			console.log("=== String Methods Tests ===\n");

			// Test 1: indexOf
			console.log("Test 1: indexOf()");
			let str1 = "hello world";
			console.log(" '" + str1 + "'.indexOf('world'):", str1.indexOf("world"));
			console.log(" '" + str1 + "'.indexOf('o'):", str1.indexOf("o"));
			console.log(" '" + str1 + "'.indexOf('xyz'):", str1.indexOf("xyz"));
			console.log(" '" + str1 + "'.indexOf(''):", str1.indexOf(""));

			// Test 2: substring
			console.log("\nTest 2: substring()");
			let str2 = "JavaScript";
			console.log(" '" + str2 + "'.substring(0, 4):", str2.substring(0, 4));
			console.log(" '" + str2 + "'.substring(4):", str2.substring(4));
			console.log(" '" + str2 + "'.substring(4, 10):", str2.substring(4, 10));
			console.log(" '" + str2 + "'.substring(10, 4):", str2.substring(10, 4)); // Should swap

			// Test 3: slice
			console.log("\nTest 3: slice()");
			let str3 = "The quick brown fox";
			console.log(" '" + str3 + "'.slice(0, 3):", str3.slice(0, 3));
			console.log(" '" + str3 + "'.slice(4, 9):", str3.slice(4, 9));
			console.log(" '" + str3 + "'.slice(10):", str3.slice(10));
			console.log(" '" + str3 + "'.slice(-3):", str3.slice(-3));
			console.log(" '" + str3 + "'.slice(0, -4):", str3.slice(0, -4));
			console.log(" '" + str3 + "'.slice(-9, -4):", str3.slice(-9, -4));

			// Test 4: split
			console.log("\nTest 4: split()");
			let str4 = "apple,banana,cherry";
			let parts = str4.split(",");
			console.log(" '" + str4 + "'.split(','):");
			for (let i = 0; i < parts.length; i++) {
			console.log(" [" + i + "]: " + parts[i]);
			}

			let str5 = "hello";
			let chars = str5.split("");
			console.log(" '" + str5 + "'.split(''):");
			for (let i = 0; i < chars.length; i++) {
			console.log(" [" + i + "]: " + chars[i]);
			}

			// Test 5: includes
			console.log("\nTest 5: includes()");
			let str6 = "The quick brown fox jumps over the lazy dog";
			console.log(" '" + str6 + "'");
			console.log(" includes('quick'):", str6.includes("quick"));
			console.log(" includes('cat'):", str6.includes("cat"));
			console.log(" includes('fox'):", str6.includes("fox"));
			console.log(" includes(''):", str6.includes(""));
			console.log(" includes('QUICK'):", str6.includes("QUICK"));

			// Test 6: startsWith
			console.log("\nTest 6: startsWith()");
			let str7 = "Hello, World!";
			console.log(" '" + str7 + "'");
			console.log(" startsWith('Hello'):", str7.startsWith("Hello"));
			console.log(" startsWith('World'):", str7.startsWith("World"));
			console.log(" startsWith('H'):", str7.startsWith("H"));
			console.log(" startsWith(''):", str7.startsWith(""));

			// Test 7: endsWith
			console.log("\nTest 7: endsWith()");
			let str8 = "index.html";
			console.log(" '" + str8 + "'");
			console.log(" endsWith('.html'):", str8.endsWith(".html"));
			console.log(" endsWith('.js'):", str8.endsWith(".js"));
			console.log(" endsWith('html'):", str8.endsWith("html"));
			console.log(" endsWith(''):", str8.endsWith(""));

			// Test 8: Combining methods
			console.log("\nTest 8: Combining methods");
			let path = "/api/users/123/profile";
			console.log(" Path:", path);
			let segments = path.split("/");
			console.log(" Segments:");
			for (let i = 0; i < segments.length; i++) {
			if (segments[i] !== "") {
			console.log(" " + segments[i]);
			}
			}

			// Test 9: URL parsing example
			console.log("\nTest 9: URL parsing");
			let url = "https://example.com/path/to/resource";
			if (url.startsWith("https://")) {
			console.log(" URL uses HTTPS");
			let domain = url.slice(8);
			let domainEnd = domain.indexOf("/");
			if (domainEnd !== -1) {
			let hostname = domain.substring(0, domainEnd);
			console.log(" Hostname:", hostname);
			let pathname = domain.slice(domainEnd);
			console.log(" Pathname:", pathname);
			}
			}

			// Test 10: String validation
			console.log("\nTest 10: String validation");
			let email = "user@example.com";
			console.log(" Email:", email);
			console.log(" Contains '@':", email.includes("@"));
			let atIndex = email.indexOf("@");
			if (atIndex !== -1) {
			let username = email.substring(0, atIndex);
			let domain = email.substring(atIndex + 1);
			console.log(" Username:", username);
			console.log(" Domain:", domain);
			console.log(" Domain ends with '.com':", domain.endsWith(".com"));
			}

			// Test 11: Edge cases
			console.log("\nTest 11: Edge cases");
			let empty = "";
			console.log(" Empty string:");
			console.log(" length:", empty.length);
			console.log(" indexOf('x'):", empty.indexOf("x"));
			console.log(" slice(0, 5):", "'" + empty.slice(0, 5) + "'");
			console.log(" includes(''):", empty.includes(""));
			console.log(" startsWith(''):", empty.startsWith(""));
			console.log(" endsWith(''):", empty.endsWith(""));

			let single = "a";
			console.log(" Single char 'a':");
			console.log(" slice(-1):", single.slice(-1));
			console.log(" substring(0, 1):", single.substring(0, 1));

			// Test 12: Practical example - template processing
			console.log("\nTest 12: Template processing");
			let template = "Hello, {{name}}! You have {{count}} messages.";
			console.log(" Template:", template);
			if (template.includes("{{") && template.includes("}}")) {
			console.log(" Template contains placeholders");
			let start = template.indexOf("{{");
			let end = template.indexOf("}}");
			if (start !== -1 && end !== -1) {
			let placeholder = template.substring(start + 2, end);
			console.log(" First placeholder:", placeholder);
			}
			}

			console.log("\n=== All tests completed ===");

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