chore: Add UUID tests and fix version 5 bits

packages/core/src/tests/uuid.test.ts

@@ -0,0 +1,108 @@
+import { beforeEach, describe, expect, it } from "vitest";
+import { stringToUuid } from "../uuid";
+import type { UUID } from "../types";
+
+describe("UUID Module", () => {
+    // Helper function to generate test strings
+    const generateTestString = (): string =>
+        Math.random().toString(36).substring(7);
+
+    // Test data setup
+    let testString: string;
+    let testNumber: number;
+
+    beforeEach(() => {
+        testString = generateTestString();
+        testNumber = Math.floor(Math.random() * 1000);
+    });
+
+    describe("stringToUuid", () => {
+        it("should generate a valid UUID matching the standard format", () => {
+            const result = stringToUuid(testString) as UUID;
+            expect(result).toMatch(
+                /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i
+            );
+        });
+
+        it("should generate consistent UUIDs for identical inputs", () => {
+            const input = testString;
+            const uuid1 = stringToUuid(input) as UUID;
+            const uuid2 = stringToUuid(input) as UUID;
+            expect(uuid1).toBe(uuid2);
+        });
+
+        it("should generate unique UUIDs for different inputs", () => {
+            const input1 = testString;
+            const input2 = generateTestString();
+            const uuid1 = stringToUuid(input1) as UUID;
+            const uuid2 = stringToUuid(input2) as UUID;
+            expect(uuid1).not.toBe(uuid2);
+        });
+
+        describe("input handling", () => {
+            it("should convert number inputs to strings correctly", () => {
+                const numberUuid = stringToUuid(testNumber) as UUID;
+                const stringUuid = stringToUuid(testNumber.toString()) as UUID;
+                expect(numberUuid).toBe(stringUuid);
+            });
+
+            it("should throw TypeError for invalid input types", () => {
+                expect(() => stringToUuid(undefined as any)).toThrow(TypeError);
+                expect(() => stringToUuid(null as any)).toThrow(TypeError);
+                expect(() => stringToUuid({} as any)).toThrow(TypeError);
+            });
+
+            it("should handle empty string input", () => {
+                const result = stringToUuid("") as UUID;
+                expect(result).toMatch(
+                    /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i
+                );
+            });
+
+            it("should handle Unicode characters and emojis consistently", () => {
+                const unicodeInput = "Hello 世界! 🌍";
+                const result1 = stringToUuid(unicodeInput) as UUID;
+                const result2 = stringToUuid(unicodeInput) as UUID;
+                expect(result1).toBe(result2);
+                expect(result1).toMatch(
+                    /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i
+                );
+            });
+        });
+
+        describe("UUID version and variant bits", () => {
+            it("should set correct version bits (version 5)", () => {
+                const uuid = stringToUuid(testString) as UUID;
+                const versionChar = uuid.split("-")[2][0];
+                expect(versionChar).toBe("5");
+            });
+
+            it("should set correct variant bits (RFC4122)", () => {
+                const uuid = stringToUuid(testString) as UUID;
+                const variantByte = parseInt(
+                    uuid.split("-")[3].slice(0, 2),
+                    16
+                );
+                expect(variantByte >= 0x80 && variantByte <= 0xbf).toBe(true);
+            });
+        });
+
+        describe("encoding handling", () => {
+            it("should handle URL-unsafe characters", () => {
+                const urlUnsafeInput = "test?query=value&param=123";
+                const result = stringToUuid(urlUnsafeInput) as UUID;
+                expect(result).toMatch(
+                    /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i
+                );
+            });
+
+            it("should handle very long inputs", () => {
+                const longInput = "a".repeat(1000);
+                const result = stringToUuid(longInput) as UUID;
+                expect(result).toMatch(
+                    /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i
+                );
+            });
+        });
+    });
+});

packages/core/src/uuid.ts

@@ -37,11 +37,13 @@ export function stringToUuid(target: string | number): UUID {
         hashBuffer[i / 2] = parseInt(hash.slice(i, i + 2), 16);
     }
 
+    hashBuffer[6] = (hashBuffer[6] & 0x0f) | 0x50;
+
     return (_uint8ArrayToHex(hashBuffer.slice(0, 4)) +
         "-" +
         _uint8ArrayToHex(hashBuffer.slice(4, 6)) +
         "-" +
-        _uint8ToHex(hashBuffer[6] & 0x0f) +
+        _uint8ToHex(hashBuffer[6]) +
         _uint8ToHex(hashBuffer[7]) +
         "-" +
         _uint8ToHex((hashBuffer[8] & 0x3f) | 0x80) +