portifolio-evandrodevbr/app/components/ClientStrip.test.tsx

import { render, screen, within } from "@testing-library/react";
import ClientStrip from "./ClientStrip";

const clients = [
  { id: "sev-modaintima", name: "SEV Moda Íntima" },
  { id: "lavacao-047", name: "Lavação 047" },
];

it("lists each client as a link to its case", () => {
  render(<ClientStrip clients={clients} />);

  expect(screen.getByText("Já entregue para:")).toBeInTheDocument();
  const list = screen.getByRole("list");
  const links = within(list).getAllByRole("link");
  expect(links.map((link) => link.textContent)).toEqual([
    "SEV Moda Íntima",
    "Lavação 047",
  ]);
  expect(links.map((link) => link.getAttribute("href"))).toEqual([
    "/cases/sev-modaintima",
    "/cases/lavacao-047",
  ]);
});

it("renders nothing without clients", () => {
  const { container } = render(<ClientStrip clients={[]} />);
  expect(container).toBeEmptyDOMElement();

  const withoutProp = render(<ClientStrip />);
  expect(withoutProp.container).toBeEmptyDOMElement();
});

it("puts the years of experience in the same line, after the clients", () => {
  render(<ClientStrip clients={clients} years={5} />);

  const experience = screen.getByText("anos de experiência");
  expect(screen.getByText("5")).toBeInTheDocument();
  const lastClient = screen.getByRole("link", { name: "Lavação 047" });
  expect(
    lastClient.compareDocumentPosition(experience) &
      Node.DOCUMENT_POSITION_FOLLOWING,
  ).toBeTruthy();
  expect(experience.closest("div")).toBe(
    screen.getByText("Já entregue para:").parentElement,
  );
});

it("shows only the experience when there are no clients, and nothing without either", () => {
  const only = render(<ClientStrip years={5} />);
  expect(screen.queryByText("Já entregue para:")).toBeNull();
  expect(screen.getByText("anos de experiência")).toBeInTheDocument();
  only.unmount();

  const none = render(<ClientStrip years={0} />);
  expect(none.container).toBeEmptyDOMElement();
});

it("gives every client link 44 px of touch target on the phone (min-h-11) and 24 px from 640 px on, where the sector shares the item", () => {
  render(<ClientStrip clients={clients} />);

  for (const link of screen.getAllByRole("link")) {
    expect(link).toHaveClass("min-h-11", "sm:min-h-6");
  }
});

it("puts the separator only BETWEEN items: none before the first, one before each of the others (years included)", () => {
  const withYears = render(<ClientStrip clients={clients} years={5} />);
  const items = withYears.container.querySelectorAll("li");
  expect(items).toHaveLength(clients.length + 1);
  expect(
    Array.from(items).map(
      (item) => item.querySelector("[aria-hidden='true']") !== null,
    ),
  ).toEqual([false, true, true]);
  // nenhum item termina com o ponto: ele sempre abre o item, para a margem negativa escondê-lo no começo de uma linha
  for (const item of items) {
    expect(item.lastElementChild).not.toHaveAttribute("aria-hidden");
  }
  withYears.unmount();

  // zero anos não escreve um "0" solto nem um ponto a mais
  const zero = render(<ClientStrip clients={clients} years={0} />);
  expect(
    zero.container.querySelectorAll("li [aria-hidden='true']"),
  ).toHaveLength(clients.length - 1);
  expect(zero.container).not.toHaveTextContent(/anos de experiência/);
  expect(screen.queryByText("0")).toBeNull();
});

it("hides the separator of an item that wraps to the next line: negative margin on every item but the first, and the list clips the overflow on the x axis", () => {
  const { container } = render(<ClientStrip clients={clients} years={5} />);

  const list = container.querySelector("ul") as HTMLElement;
  expect(list).toHaveClass("flex-wrap", "overflow-x-clip");
  const items = Array.from(list.querySelectorAll("li"));
  expect(items[0]).not.toHaveClass("-ml-4");
  for (const item of items.slice(1)) {
    expect(item).toHaveClass("-ml-4");
    // o ponto ocupa os mesmos 16 px que a margem negativa
    expect(item.querySelector("[aria-hidden='true']")).toHaveClass("w-4");
  }
  for (const item of items) expect(item).toHaveClass("pr-4");
});

it("keeps the years number in the display font (the mono font is not downloaded above the fold)", () => {
  render(<ClientStrip clients={clients} years={5} />);

  expect(screen.getByText("5").className).not.toContain("font-mono");
});

it("stacks the sector under each name from 640 px on, outside the link, and shows only the name for a client without one", () => {
  render(
    <ClientStrip
      clients={[
        {
          id: "sev-modaintima",
          name: "SEV Moda Íntima",
          sector: "loja virtual",
        },
        { id: "lavacao-047", name: "Lavação 047" },
      ]}
    />,
  );

  const sector = screen.getByText("loja virtual");
  // 13 px e apagado, e só de 640 px em diante (abaixo, só os nomes)
  expect(sector).toHaveClass("text-[13px]", "max-sm:hidden");
  const link = screen.getByRole("link", { name: "SEV Moda Íntima" });
  expect(link).not.toContainElement(sector);
  expect(link.parentElement).toContainElement(sector);
  expect(link.parentElement).toHaveClass("flex-col");
  // o nome continua levando ao case
  expect(link).toHaveAttribute("href", "/cases/sev-modaintima");
  const plain = screen.getByRole("link", { name: "Lavação 047" });
  expect(plain.parentElement?.childElementCount).toBe(1);
});