dashboard/src/components/atoms/Button.test.tsx

import { render, screen } from "@testing-library/react";
import userEvent from "@testing-library/user-event";
import { describe, it, expect, vi } from "vitest";
import Button from "./Button";

describe("Button", () => {
  it("renders children", () => {
    render(<Button>Click me</Button>);
    expect(
      screen.getByRole("button", { name: "Click me" }),
    ).toBeInTheDocument();
  });

  it("handles click events", async () => {
    const handleClick = vi.fn();
    render(<Button onClick={handleClick}>Click me</Button>);

    await userEvent.click(screen.getByRole("button"));
    expect(handleClick).toHaveBeenCalledTimes(1);
  });

  it("applies variant styles", () => {
    render(<Button variant="primary">Primary</Button>);
    const button = screen.getByRole("button");
    expect(button).toHaveClass("bg-primary");
  });

  it("applies size styles", () => {
    render(<Button size="sm">Small</Button>);
    const button = screen.getByRole("button");
    expect(button).toHaveClass("text-xs");
  });

  it("can be disabled", () => {
    render(<Button disabled>Disabled</Button>);
    expect(screen.getByRole("button")).toBeDisabled();
  });

  it("shows spinner and disables when loading", () => {
    render(<Button loading>Loading</Button>);
    const button = screen.getByRole("button");
    expect(button).toBeDisabled();
    expect(button.querySelector("svg")).toBeInTheDocument();
  });

  it("shows spinner alongside text when loading", () => {
    render(<Button loading>Submit</Button>);
    expect(screen.getByText("Submit")).toBeInTheDocument();
    expect(screen.getByRole("button").querySelector("svg")).toBeInTheDocument();
  });
});