test(form): add unit tests

tests/Form/Form.test.ts

@@ -0,0 +1,58 @@
+import { render, screen } from "@testing-library/svelte";
+import { user } from "../setup-tests";
+import FormTest from "./Form.test.svelte";
+
+describe("Form", () => {
+  it("renders with default props", () => {
+    render(FormTest);
+    const form = screen.getByTestId("form");
+    expect(form).toBeInTheDocument();
+    expect(form).toHaveClass("bx--form");
+  });
+
+  it("renders form elements correctly", () => {
+    render(FormTest);
+
+    // Check form group
+    const formGroup = screen.getByRole("group");
+    expect(formGroup).toBeInTheDocument();
+    expect(formGroup).toHaveTextContent("Checkboxes");
+
+    // Check checkboxes
+    const checkboxes = screen.getAllByRole("checkbox");
+    expect(checkboxes).toHaveLength(3);
+    expect(checkboxes[0]).toBeChecked();
+    expect(checkboxes[1]).not.toBeChecked();
+    expect(checkboxes[2]).toBeDisabled();
+
+    // Check submit button
+    const submitButton = screen.getByRole("button", { name: "Submit" });
+    expect(submitButton).toBeInTheDocument();
+    expect(submitButton).toHaveAttribute("type", "submit");
+  });
+
+  describe("form submission", () => {
+    it("handles form submission", async () => {
+      const consoleLog = vi.spyOn(console, "log");
+      render(FormTest);
+
+      const submitButton = screen.getByRole("button", { name: "Submit" });
+      await user.click(submitButton);
+
+      expect(consoleLog).toHaveBeenCalledWith("submit", expect.any(Event));
+    });
+
+    it("prevents default submission when preventDefault is true", async () => {
+      const consoleLog = vi.spyOn(console, "log");
+      const preventDefaultSpy = vi.fn();
+
+      render(FormTest, { preventDefault: true });
+
+      const submitButton = screen.getByRole("button", { name: "Submit" });
+      await user.click(submitButton);
+
+      expect(preventDefaultSpy).not.toHaveBeenCalled();
+      expect(consoleLog).toHaveBeenCalled();
+    });
+  });
+});