android: the room list filtered by name, the rest on demand

Soulseek lists hundreds of rooms; the phone showed the first 80 and no way
to the rest. Community → Rooms now has a filter by name and extends the
list 200 at a time.

tests/mobile/smoke.mjs

@@ -112,6 +112,7 @@ const PROBE = `(function () {
         plfilter: !!document.querySelector('.plfilter input'),
         plfirst: (document.querySelector('.pl-rows .trk .t') || {}).textContent || '',
         qfirst: (document.querySelector('.q-face .row .t') || {}).textContent || '',
+        rooms: document.querySelectorAll('.screen button.row .art.hash').length,
         plthumbs: document.querySelectorAll('.pl-rows .thumb img').length,
         imp: document.querySelectorAll('.imp-rows .trk').length,
         impTags: [].map.call(document.querySelectorAll('.imp-rows .tag'), function (t) { return t.textContent.trim(); }).join('|'),
@@ -202,6 +203,10 @@ const MOCK_STEPS = [
     { do: `__click('.halfsheet .prompt-acts .btn-fill', 'Open')`, name: "user-lookup", wait: 700 },
     { do: `document.querySelector('.scrim').click()`, wait: 500 },
     { do: `__click('.segtabs button', 'Rooms')`, wait: 500 },
+    /* the room list: filtered by name, the rest on demand */
+    { do: `(function () { var i = document.querySelector('.roomfilter input'); i.value = 'vin'; i.dispatchEvent(new Event('input', { bubbles: true })); })()`, name: "rooms-filtered", wait: 500 },
+    { do: `(function () { var i = document.querySelector('.roomfilter input'); i.value = ''; i.dispatchEvent(new Event('input', { bubbles: true })); })()`, wait: 400 },
+    { do: `__click('.screen .btn', 'more rooms')`, name: "rooms-more", wait: 500 },
     /* the fake network: a room with a few lines in it */
     { do: `__click('.screen button.row', 'Lounge')`, name: "room", wait: 2400 },
     { do: `history.back()`, wait: 700 },
@@ -422,6 +427,8 @@ const MOCK_EXPECT = {
        complete the set, following — the desktop's page */
     "home-again": (i) => /^(Good |Still)/.test(i.title) && /^Coming/.test(i.feat) && i.news >= 1 && /New from your artists/.test(i.secs) && /From the back catalogue/.test(i.secs) && /Recommended for you/.test(i.secs) && /Following/.test(i.secs),
     room: (i) => i.screen.includes("tr-push") && i.msgs >= 2,
+    "rooms-filtered": (i) => i.rooms === 1,
+    "rooms-more": (i) => i.rooms >= 95,
     /* the artist with a picture shows it on the hero and its card; the
        namesake under Deezer's empty-hash placeholder shows the app's own */
     "cat-results": (i) => i.songs >= 4 && i.top.startsWith("Daft Punk") && i.heroImg && i.cardImgs === 1 && i.cardPhs === 1,