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612 lines (523 loc) · 24.1 KB
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import { test, expect } from "@playwright/test";
/**
* Keyboard operability checks for the initialized player — the half of
* accessibility testing axe cannot do. axe inspects the static accessibility
* tree; it cannot prove the player is reachable by Tab, that play/pause is
* operable with a keyboard, or that focus stays visible.
*
* Deliberately small scope for a first suite: reachability, operability of
* the primary control, and a visible focus indicator. It does not attempt to
* cover Able Player's full keyboard model (modifier hotkeys, seekbar arrows,
* preference dialogs) — those deserve dedicated specs over time.
*
* Runs at all four viewports (playwright.config.js): a control that falls out
* of the tab order or loses its focus ring at one breakpoint still fails.
*/
const DEMO = "/demos/video1.html";
/** Read the active element's identity synchronously (never auto-waits). */
async function activeInfo(page) {
return page.evaluate(() => {
const el = document.activeElement;
if (!el || el === document.body) return { tag: "body", cls: "", label: "" };
return {
tag: el.tagName.toLowerCase(),
cls: el.className || "",
label: el.getAttribute("aria-label") || (el.textContent || "").trim(),
};
});
}
/** True when the focused element shows a rendered outline or box-shadow ring. */
async function focusedHasVisibleRing(page) {
return page.evaluate(() => {
const el = document.activeElement;
if (!el || el === document.body) return false;
const style = getComputedStyle(el);
const outlineVisible =
style.outlineStyle !== "none" &&
parseFloat(style.outlineWidth) > 0 &&
// A fully transparent outline is not a visible indicator. Able Player's
// own :focus rule paints a solid var(--able-focus-outline), so this
// guards against a theme that overrides the color to transparent.
!/^rgba\(\s*\d+\s*,\s*\d+\s*,\s*\d+\s*,\s*0\s*\)$/.test(style.outlineColor) &&
style.outlineColor !== "transparent";
const shadowVisible = style.boxShadow !== "none" && style.boxShadow !== "";
return outlineVisible || shadowVisible;
});
}
test.beforeEach(async ({ page }) => {
await page.goto(DEMO);
await page.waitForSelector(".able-controller", { timeout: 20_000 });
});
test("player controls are reachable by Tab from the top of the document", async ({ page }) => {
// Walk the tab ring from the document start. The page has a small nav
// (2 links) before the player; 40 stops is a generous ceiling that still
// fails fast if the player is unreachable.
let reachedPlayer = false;
for (let i = 0; i < 40; i++) {
await page.keyboard.press("Tab");
const info = await activeInfo(page);
if (info.tag === "body") break; // wrapped: end of ring, player never seen
if (/able-/.test(info.cls) || (await page.evaluate(() =>
Boolean(document.activeElement?.closest(".able-wrapper")),
))) {
reachedPlayer = true;
break;
}
}
expect(reachedPlayer, "tabbing must reach the Able Player UI").toBe(true);
});
test("play/pause is keyboard-operable and announces its state", async ({ page }) => {
const playButton = page.locator(".able-button-handler-play").first();
await playButton.focus();
const before = await playButton.getAttribute("aria-label");
expect(before, "play/pause control must have an accessible name").toBeTruthy();
await page.keyboard.press("Enter");
// Media playback must actually start (paused flips false) — the control is
// operable, not merely focusable.
await expect
.poll(async () => page.evaluate(() => document.querySelector("video, audio")?.paused), {
timeout: 10_000,
message: "pressing Enter on the play control must start playback",
})
.toBe(false);
// And the accessible name must flip to reflect the new state (Play → Pause
// family — exact string is locale/config dependent, so assert change only).
await expect
.poll(async () => playButton.getAttribute("aria-label"), {
timeout: 10_000,
message: "the control's accessible name must update after activation",
})
.not.toBe(before);
// Enter again pauses — round trip proves both directions are operable.
await page.keyboard.press("Enter");
await expect
.poll(async () => page.evaluate(() => document.querySelector("video, audio")?.paused), {
timeout: 10_000,
message: "pressing Enter again must pause playback",
})
.toBe(true);
});
test("focused player controls show a visible focus indicator", async ({ page }) => {
const playButton = page.locator(".able-button-handler-play").first();
await playButton.focus();
expect(
await focusedHasVisibleRing(page),
"the focused play control must render a visible focus ring",
).toBe(true);
});
/* ---------- Full control coverage for video1.html ---------- */
const mediaState = (page) =>
page.evaluate(() => {
const v = document.querySelector("video");
return { t: v.currentTime, paused: v.paused, rate: v.playbackRate, volume: v.volume };
});
/** Pause and seek the media to a known position before a control test. */
async function seedTime(page, seconds) {
await page.evaluate(async (s) => {
const v = document.querySelector("video");
v.pause();
await new Promise((resolve) => {
v.addEventListener("seeked", resolve, { once: true });
v.currentTime = s;
});
}, seconds);
}
const btn = (page, name) => page.locator(`.able-controller button.able-button-handler-${name}`);
test("restart returns to the beginning and starts playback", async ({ page }) => {
await seedTime(page, 20);
await btn(page, "restart").focus();
await page.keyboard.press("Enter");
await expect.poll(async () => (await mediaState(page)).paused, { timeout: 10_000 }).toBe(false);
// Playback began from the start, not from 20s.
expect((await mediaState(page)).t).toBeLessThan(5);
});
test("rewind and forward move the playhead by the seek interval", async ({ page }) => {
await seedTime(page, 20);
const interval = await page.evaluate(() => {
const m = document.querySelector(".able-button-handler-forward").getAttribute("aria-label");
return Number(m.match(/\d+/)[0]);
});
expect(interval).toBeGreaterThan(0);
await btn(page, "forward").focus();
await page.keyboard.press("Enter");
await expect.poll(async () => (await mediaState(page)).t).toBeCloseTo(20 + interval, 0);
// Able Player tracks elapsed time from timeupdate; wait for its display to catch up.
await expect(page.locator(".able-elapsedTime")).toHaveText(`00:${20 + interval}`);
await btn(page, "rewind").focus();
await page.keyboard.press("Enter");
await expect.poll(async () => (await mediaState(page)).t).toBeCloseTo(20, 0);
});
test("rewind does not go below zero", async ({ page }) => {
await seedTime(page, 3);
await btn(page, "rewind").focus();
await page.keyboard.press("Enter");
await expect.poll(async () => (await mediaState(page)).t).toBeLessThan(0.5);
});
test("faster and slower adjust the playback rate in 0.25 steps", async ({ page }) => {
expect((await mediaState(page)).rate).toBe(1);
await btn(page, "faster").focus();
await page.keyboard.press("Enter");
await expect.poll(async () => (await mediaState(page)).rate).toBe(1.25);
await expect(page.locator(".able-speed")).toContainText("1.25");
await btn(page, "slower").focus();
await page.keyboard.press("Enter");
await page.keyboard.press("Enter");
await expect.poll(async () => (await mediaState(page)).rate).toBe(0.75);
await expect(page.locator(".able-speed")).toContainText("0.75");
});
test("able-popup menus contain the expected items", async ({ page }) => {
const items = async (idSuffix) =>
page.evaluate(
(s) =>
[...document.querySelectorAll(`.able-popup[id$="${s}"] > li`)].map((li) => ({
text: li.textContent.trim(),
role: li.getAttribute("role"),
})),
idSuffix,
);
expect(await items("-prefs-menu")).toEqual([
{ text: "Captions", role: "menuitem" },
{ text: "Keyboard", role: "menuitem" },
{ text: "Transcript", role: "menuitem" },
]);
expect(await items("-captions-menu")).toEqual([
{ text: "English captions", role: "menuitemradio" },
{ text: "Captions off", role: "menuitemradio" },
]);
expect(await items("-transcript-window-menu")).toEqual([
{ text: "Move", role: "menuitem" },
{ text: "Resize", role: "menuitem" },
{ text: "Close", role: "menuitem" },
]);
});
test("preferences menu opens, focuses its first item, and arrows move focus", async ({ page }) => {
const prefs = btn(page, "preferences");
await prefs.focus();
await page.keyboard.press("Enter");
await expect(prefs).toHaveAttribute("aria-expanded", "true");
const menuItems = page.locator('.able-popup[id$="-prefs-menu"] > li');
await expect(menuItems.nth(0)).toBeFocused();
await page.keyboard.press("ArrowDown");
await expect(menuItems.nth(1)).toBeFocused();
await page.keyboard.press("ArrowDown");
await expect(menuItems.nth(2)).toBeFocused();
await page.keyboard.press("ArrowUp");
await expect(menuItems.nth(1)).toBeFocused();
await page.keyboard.press("Escape");
await expect(prefs).toHaveAttribute("aria-expanded", "false");
await expect(prefs).toBeFocused();
});
test("volume slider sets the expected volume", async ({ page }) => {
const volume = btn(page, "volume");
await volume.focus();
await page.keyboard.press("Enter");
await expect(volume).toHaveAttribute("aria-expanded", "true");
const range = page.locator(".able-volume-slider input[type=range]");
await expect(range).toBeFocused();
await range.fill("3");
await expect.poll(async () => (await mediaState(page)).volume).toBeCloseTo(0.3, 2);
await expect(volume).toHaveAttribute("aria-label", /30%/);
await page.keyboard.press("ArrowUp");
await expect.poll(async () => (await mediaState(page)).volume).toBeCloseTo(0.4, 2);
await expect(volume).toHaveAttribute("aria-label", /40%/);
});
test("captions button toggles captions on and off", async ({ page }) => {
const captions = btn(page, "captions");
const labelBefore = await captions.getAttribute("aria-label");
await captions.focus();
await page.keyboard.press("Enter");
await expect(captions).not.toHaveAttribute("aria-label", labelBefore);
const labelOff = await captions.getAttribute("aria-label");
await page.keyboard.press("Enter");
await expect(captions).toHaveAttribute("aria-label", labelBefore);
expect(labelOff).not.toBe(labelBefore);
});
test("transcript button opens the transcript and moves focus into it", async ({ page }) => {
const toggle = btn(page, "transcript");
const area = page.locator(".able-transcript-area");
await expect(area).toBeHidden();
await toggle.focus();
await page.keyboard.press("Enter");
await expect(area).toBeVisible();
await expect
.poll(() => page.evaluate(() => Boolean(document.activeElement?.closest(".able-transcript-area"))))
.toBe(true);
// The window menu moves focus between Move / Resize / Close. Able Player
// ignores keys on the window button for ~100ms after it takes focus.
await page.waitForTimeout(250);
await page.keyboard.press("Enter");
const windowItems = page.locator('.able-popup[id$="-transcript-window-menu"] > li');
await expect(windowItems.nth(0)).toBeFocused();
await page.keyboard.press("ArrowDown");
await expect(windowItems.nth(1)).toBeFocused();
await page.keyboard.press("ArrowDown");
await expect(windowItems.nth(2)).toBeFocused();
});
test("fullscreen toggles on and off without losing focus", async ({ page }) => {
const fs = btn(page, "fullscreen");
const state = () =>
page.evaluate(() => ({
full: Boolean(document.fullscreenElement),
inPlayer: Boolean(document.activeElement?.closest(".able-wrapper")),
}));
await fs.focus();
await page.keyboard.press("Enter");
await expect.poll(async () => (await state()).full, { timeout: 10_000 }).toBe(true);
expect((await state()).inPlayer, "focus stays in the player in fullscreen").toBe(true);
await page.keyboard.press("Enter");
await expect.poll(async () => (await state()).full, { timeout: 10_000 }).toBe(false);
expect((await state()).inPlayer, "focus stays in the player after exit").toBe(true);
});
test("clicking a transcript line seeks to that line and plays", async ({ page }) => {
await btn(page, "transcript").click();
const area = page.locator(".able-transcript-area");
await expect(area).toBeVisible();
const target = area.locator("span.able-transcript-seekpoint[data-start]").nth(3);
const start = Number(await target.getAttribute("data-start"));
expect(start).toBeGreaterThan(0);
await target.click();
await expect.poll(async () => (await mediaState(page)).paused, { timeout: 10_000 }).toBe(false);
const { t } = await mediaState(page);
expect(t).toBeGreaterThanOrEqual(start - 0.5);
expect(t).toBeLessThan(start + 3);
});
/* ---------- Chapters (video3), sign language (video5), playlist (playlist2) ---------- */
async function openDemo(page, name) {
await page.goto(`/demos/${name}.html`);
await page.waitForSelector(".able-controller", { timeout: 20_000 });
}
test("video3: selecting a chapter seeks to it and starts playback", async ({ page }) => {
await openDemo(page, "video3");
const chapters = btn(page, "chapters");
const menu = page.locator('.able-popup[id$="-chapters-menu"]');
const items = menu.locator("> li");
await expect(items).toHaveCount(2);
await chapters.focus();
await page.keyboard.press("Enter");
await expect(menu).toBeVisible();
await expect(items.nth(0)).toBeFocused();
await page.keyboard.press("ArrowDown");
await expect(items.nth(1)).toBeFocused();
const start = await page.evaluate(() => {
const m = document.querySelector('.able-popup[id$="-chapters-menu"] > li:nth-child(2)').textContent;
const [mm, ss] = m.split(" - ")[1].split(":").map(Number);
return mm * 60 + ss;
});
expect(start).toBe(37);
await page.keyboard.press("Enter");
await expect(menu).toBeHidden();
await expect(chapters).toBeFocused();
await expect.poll(async () => (await mediaState(page)).t).toBeGreaterThanOrEqual(start - 0.5);
expect((await mediaState(page)).t).toBeLessThan(start + 3);
await expect.poll(async () => (await mediaState(page)).paused, {
message: "selecting a chapter must start playback",
}).toBe(false);
});
test("video5: sign language window opens and both videos play in sync", async ({ page }) => {
await openDemo(page, "video5");
const sign = page.locator(".able-sign-window");
await expect(sign).toBeHidden();
await btn(page, "sign").focus();
await page.keyboard.press("Enter");
await expect(sign).toBeVisible();
const signVideo = sign.locator("video");
await expect(signVideo).toHaveCount(1);
const times = () =>
page.evaluate(() => {
const [main, sign] = document.querySelectorAll("video");
return { main: main.currentTime, sign: sign.currentTime, mp: main.paused, sp: sign.paused };
});
await btn(page, "play").click();
await expect
.poll(async () => {
const s = await times();
return !s.mp && !s.sp && s.main > 1;
}, { timeout: 15_000, message: "both videos must be playing" })
.toBe(true);
const s = await times();
expect(Math.abs(s.main - s.sign)).toBeLessThan(1);
// Seeking the main video re-syncs the sign video.
await btn(page, "forward").click();
await expect
.poll(async () => {
const t = await times();
return Math.abs(t.main - t.sign);
}, { timeout: 10_000 })
.toBeLessThan(1);
await btn(page, "play").click();
await expect.poll(async () => {
const t = await times();
return t.mp && t.sp;
}).toBe(true);
});
test.describe("playlist2", () => {
const current = (page) =>
page.evaluate(() => {
const lis = [...document.querySelectorAll(".able-playlist > li")];
return {
index: lis.findIndex((li) => li.classList.contains("able-current")),
src: document.querySelector("video").currentSrc.split("/").pop(),
};
});
// A track change rebuilds the player; further presses are ignored until it settles.
const settle = async (page) => {
await page.waitForFunction(() => document.querySelector(".able-wrapper video")?.readyState >= 3);
await page.waitForTimeout(1000);
};
test.beforeEach(async ({ page }) => {
await openDemo(page, "playlist2");
await expect(page.locator(".able-playlist > li")).toHaveCount(3);
await expect.poll(async () => (await current(page)).index, { timeout: 15_000 }).toBe(0);
await settle(page);
});
test("playlist items take focus and start playback when activated", async ({ page }) => {
const itemButton = page.locator(".able-playlist > li button").nth(2);
await itemButton.focus();
await expect(itemButton).toBeFocused();
await page.keyboard.press("Enter");
await expect.poll(async () => (await current(page)).index, { timeout: 15_000 }).toBe(2);
await expect.poll(async () => (await current(page)).src).toBe("deadline.mp4");
await expect(itemButton).toHaveAttribute("aria-current", "true");
await expect.poll(async () => (await mediaState(page)).paused, { timeout: 15_000 }).toBe(false);
});
test("next and previous track buttons navigate the playlist", async ({ page }) => {
await btn(page, "next").focus();
await page.keyboard.press("Enter");
await expect.poll(async () => (await current(page)).index, { timeout: 15_000 }).toBe(1);
await expect.poll(async () => (await current(page)).src).toBe("itaccess-excerpt.mp4");
await settle(page);
await btn(page, "previous").focus();
await page.keyboard.press("Enter");
await expect.poll(async () => (await current(page)).index, { timeout: 15_000 }).toBe(0);
await expect.poll(async () => (await current(page)).src).toBe("wwa.mp4");
await settle(page);
// Previous on the first track wraps to the last.
await btn(page, "previous").focus();
await page.keyboard.press("Enter");
await expect.poll(async () => (await current(page)).index, { timeout: 15_000 }).toBe(2);
await expect.poll(async () => (await current(page)).src).toBe("deadline.mp4");
await settle(page);
// Next on the last track wraps to the first.
await btn(page, "next").focus();
await page.keyboard.press("Enter");
await expect.poll(async () => (await current(page)).index, { timeout: 15_000 }).toBe(0);
await settle(page);
});
});
/* ---------- Keyboard shortcuts (default modifiers: Alt + Control) ---------- */
const SHORTCUT = "Alt+Control+";
/** Snapshot of one player's media state; `i` is the player's index on the page (sign-language videos are excluded). */
const playerState = (page, i = 0) =>
page.evaluate((idx) => {
const v = document.querySelectorAll("video[data-able-player]")[idx];
const w = v.closest(".able-wrapper");
return {
paused: v.paused,
muted: v.muted,
volume: v.volume,
// Players with several caption tracks open a menu (aria-expanded) instead of toggling.
captions: ["aria-label", "aria-expanded"]
.map((a) => w.querySelector(".able-button-handler-captions").getAttribute(a))
.join("|"),
volumeOpen: w.querySelector(".able-button-handler-volume").getAttribute("aria-expanded"),
};
}, i);
test.describe("keyboard shortcuts: single player (video1)", () => {
test.beforeEach(async ({ page }) => {
await page.locator(".able-button-handler-restart").first().focus();
});
test("Alt+Ctrl+P toggles play/pause", async ({ page }) => {
await page.keyboard.press(`${SHORTCUT}p`);
await expect.poll(async () => (await playerState(page)).paused, { timeout: 10_000 }).toBe(false);
// The player toggles on its own paused flag, which updates on the media's
// play event; wait for the button to reflect it before pressing again.
await expect(page.locator(".able-button-handler-play").first()).toHaveAttribute("aria-label", /pause/i);
await page.keyboard.press(`${SHORTCUT}p`);
await expect.poll(async () => (await playerState(page)).paused).toBe(true);
});
test("Alt+Ctrl+M toggles mute", async ({ page }) => {
await page.keyboard.press(`${SHORTCUT}m`);
await expect.poll(async () => (await playerState(page)).muted).toBe(true);
await page.keyboard.press(`${SHORTCUT}m`);
await expect.poll(async () => (await playerState(page)).muted).toBe(false);
});
test("Alt+Ctrl+C toggles captions", async ({ page }) => {
const before = (await playerState(page)).captions;
await page.keyboard.press(`${SHORTCUT}c`);
await expect.poll(async () => (await playerState(page)).captions).not.toBe(before);
await page.keyboard.press(`${SHORTCUT}c`);
await expect.poll(async () => (await playerState(page)).captions).toBe(before);
});
test("Alt+Ctrl+V opens the volume slider", async ({ page }) => {
await page.keyboard.press(`${SHORTCUT}v`);
await expect.poll(async () => (await playerState(page)).volumeOpen).toBe("true");
await expect(page.locator(".able-volume-slider")).toBeVisible();
});
test("Alt+Ctrl+1 through 9 set the volume", async ({ page }) => {
for (const n of [1, 2, 3, 4, 5, 6, 7, 8, 9]) {
await page.keyboard.press(`${SHORTCUT}${n}`);
await expect.poll(async () => (await playerState(page)).volume).toBeCloseTo(n / 10, 2);
await expect(page.locator(".able-button-handler-volume")).toHaveAttribute(
"aria-label",
new RegExp(`${n * 10}%`),
);
}
});
test("shortcuts do not fire without the modifier keys", async ({ page }) => {
await page.keyboard.press("p");
await page.keyboard.press("m");
await page.keyboard.press("5");
await page.waitForTimeout(500);
const s = await playerState(page);
expect(s.paused).toBe(true);
expect(s.muted).toBe(false);
expect(s.volume).toBeCloseTo(0.7, 2);
});
});
test.describe("keyboard shortcuts: multiple players (multi3)", () => {
const players = (page) => page.locator(".able-wrapper");
test.beforeEach(async ({ page }) => {
await page.goto("/demos/multi3.html");
await expect(players(page)).toHaveCount(2);
await page.waitForSelector(".able-controller", { timeout: 20_000 });
await page.waitForFunction(() =>
[...document.querySelectorAll("video[data-able-player]")].every((v) => v.readyState >= 1),
);
});
const focusPlayer = (page, i) => players(page).nth(i).locator(".able-button-handler-restart").focus();
for (const i of [0, 1]) {
const other = 1 - i;
test(`play/pause and mute affect only player ${i + 1} when it is focused`, async ({ page }) => {
await focusPlayer(page, i);
await page.keyboard.press(`${SHORTCUT}p`);
await expect.poll(async () => (await playerState(page, i)).paused, { timeout: 10_000 }).toBe(false);
expect((await playerState(page, other)).paused).toBe(true);
await page.keyboard.press(`${SHORTCUT}m`);
await expect.poll(async () => (await playerState(page, i)).muted).toBe(true);
expect((await playerState(page, other)).muted).toBe(false);
});
test(`captions and volume affect only player ${i + 1} when it is focused`, async ({ page }) => {
const otherBefore = await playerState(page, other);
const before = await playerState(page, i);
await focusPlayer(page, i);
await page.keyboard.press(`${SHORTCUT}c`);
await expect.poll(async () => (await playerState(page, i)).captions).not.toBe(before.captions);
expect((await playerState(page, other)).captions).toBe(otherBefore.captions);
await page.keyboard.press(`${SHORTCUT}3`);
await expect.poll(async () => (await playerState(page, i)).volume).toBeCloseTo(0.3, 2);
expect((await playerState(page, other)).volume).toBeCloseTo(otherBefore.volume, 2);
await page.keyboard.press(`${SHORTCUT}v`);
await expect.poll(async () => (await playerState(page, i)).volumeOpen).toBe("true");
expect((await playerState(page, other)).volumeOpen).toBe("false");
});
}
test("shortcuts do nothing when focus is outside every player", async ({ page }) => {
const before = [await playerState(page, 0), await playerState(page, 1)];
await page.evaluate(() => document.activeElement?.blur());
for (const key of ["p", "m", "c", "5", "v"]) {
await page.keyboard.press(`${SHORTCUT}${key}`);
}
await page.waitForTimeout(500);
expect([await playerState(page, 0), await playerState(page, 1)]).toEqual(before);
});
});
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