added some tests to utils folder

src/core/utils/debounce.test.ts

@@ -0,0 +1,64 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+import { debounce } from "./debounce";
+
+describe("debounce", () => {
+  beforeEach(() => {
+    vi.useFakeTimers();
+  });
+
+  afterEach(() => {
+    vi.restoreAllMocks();
+  });
+
+  it("delays executing the callback until after wait time has elapsed", () => {
+    const mockCallback = vi.fn();
+    const debouncedFunction = debounce(mockCallback, 500);
+
+    debouncedFunction();
+    expect(mockCallback).not.toHaveBeenCalled();
+
+    vi.advanceTimersByTime(300);
+    expect(mockCallback).not.toHaveBeenCalled();
+
+    vi.advanceTimersByTime(200);
+    expect(mockCallback).toHaveBeenCalledTimes(1);
+  });
+
+  it("only executes the callback once if called multiple times within wait period", () => {
+    const mockCallback = vi.fn();
+    const debouncedFunction = debounce(mockCallback, 500);
+
+    debouncedFunction();
+    debouncedFunction();
+    debouncedFunction();
+
+    vi.advanceTimersByTime(500);
+    expect(mockCallback).toHaveBeenCalledTimes(1);
+  });
+
+  it("resets the timer when called again during wait period", () => {
+    const mockCallback = vi.fn();
+    const debouncedFunction = debounce(mockCallback, 500);
+
+    debouncedFunction();
+
+    vi.advanceTimersByTime(300);
+    debouncedFunction();
+
+    vi.advanceTimersByTime(300);
+    expect(mockCallback).not.toHaveBeenCalled();
+
+    vi.advanceTimersByTime(200);
+    expect(mockCallback).toHaveBeenCalledTimes(1);
+  });
+
+  it("passes arguments to the callback function", () => {
+    const mockCallback = vi.fn();
+    const debouncedFunction = debounce(mockCallback, 500);
+
+    debouncedFunction("test", 123);
+
+    vi.advanceTimersByTime(500);
+    expect(mockCallback).toHaveBeenCalledWith("test", 123);
+  });
+});

src/core/utils/ip.test.ts

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+import { describe, expect, it } from "vitest";
+import { convertIntToIpAddress, convertIpAddressToInt } from "./ip";
+
+describe("IP Address Conversion Functions", () => {
+  describe("convertIntToIpAddress", () => {
+    it("converts 0 to 0.0.0.0", () => {
+      expect(convertIntToIpAddress(0)).toBe("0.0.0.0");
+    });
+
+    it("converts 16_777_343  to 127.0.0.1", () => {
+      expect(convertIntToIpAddress(16_777_343)).toBe("127.0.0.1");
+    });
+
+    it("converts  16_820_416 to 192.168.0.1", () => {
+      expect(convertIntToIpAddress(16_820_416)).toBe("192.168.0.1");
+    });
+
+    it("converts 4_294_967_295 to 255.255.255.255", () => {
+      expect(convertIntToIpAddress(4_294_967_295)).toBe("255.255.255.255");
+    });
+  });
+
+  describe("convertIpAddressToInt", () => {
+    it("converts 0.0.0.0 to 0", () => {
+      expect(convertIpAddressToInt("0.0.0.0")).toBe(0);
+    });
+
+    it("converts 127.0.0.1 to 16_777_343", () => {
+      expect(convertIpAddressToInt("127.0.0.1")).toBe(16_777_343);
+    });
+
+    it("converts 192.168.0.1 to 16_820_416", () => {
+      expect(convertIpAddressToInt("192.168.0.1")).toBe(16_820_416);
+    });
+
+    it("converts 255.255.255.255 to 4_294_967_295", () => {
+      expect(convertIpAddressToInt("255.255.255.255")).toBe(4_294_967_295);
+    });
+
+    it("handles non-standard formats", () => {
+      expect(convertIpAddressToInt("1.2.3.4")).toBe(67_305_985);
+    });
+
+    it("handles invalid IP addresses gracefully", () => {
+      expect(convertIpAddressToInt("300.1.2.3")).not.toBeNull();
+      expect(typeof convertIpAddressToInt("300.1.2.3")).toBe("number");
+    });
+  });
+
+  describe("bidirectional conversion", () => {
+    it("can convert back and forth", () => {
+      const testIps = [
+        "0.0.0.0",
+        "127.0.0.1",
+        "192.168.1.1",
+        "10.0.0.1",
+        "255.255.255.255",
+      ];
+
+      for (const ip of testIps) {
+        const int = convertIpAddressToInt(ip);
+        expect(int).not.toBeNull();
+        if (int !== null) {
+          const convertedBack = convertIntToIpAddress(int);
+          expect(convertedBack).toBe(ip);
+        }
+      }
+    });
+  });
+});

src/core/utils/randId.test.ts

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+import { beforeEach, describe, expect, it, vi } from "vitest";
+import { randId } from "./randId";
+
+describe("randId", () => {
+  beforeEach(() => {
+    vi.restoreAllMocks();
+  });
+
+  it("returns a number", () => {
+    const result = randId();
+    expect(typeof result).toBe("number");
+  });
+
+  it("returns an integer", () => {
+    const result = randId();
+    expect(Number.isInteger(result)).toBe(true);
+  });
+
+  it("uses Math.random to generate the number", () => {
+    const mockRandom = vi.spyOn(Math, "random").mockReturnValue(0.5);
+    const result = randId();
+
+    expect(mockRandom).toHaveBeenCalled();
+    expect(result).toBe(Math.floor(0.5 * 1e9));
+  });
+
+  it("returns a value between 0 and 1e9 (exclusive)", () => {
+    const result = randId();
+    expect(result).toBeGreaterThanOrEqual(0);
+    expect(result).toBeLessThan(1e9);
+  });
+
+  it("returns different values on subsequent calls", () => {
+    vi.spyOn(Math, "random").mockRestore();
+
+    const results = new Set();
+
+    for (let i = 0; i < 100; i++) {
+      results.add(randId());
+    }
+
+    expect(results.size).toBeGreaterThan(95);
+  });
+});