test sweep: cover gesture_handler / gesture_detector selection paths (T-91)

Adds three widget tests under TerminalView — selection gestures: double-tap selects a word; long-press (touch) selects a word and keeps the selection across move-update; mouse drag selects characters across drag-start and drag-update. Each verifies the side-effect on the externally-supplied TerminalController. Coverage: gesture_detector.dart 42/50 -> 50/50; gesture_handler.dart 39/59 -> 55/59. The 4 remaining uncovered lines (147, 148, 151, 152) are the dead tertiary-tap state methods filed as T-95 — same shape as T-93 but on middle-click. Floor stays at 69 (69.79% measured; integer threshold unchanged). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
test sweep: cover ui/ widget-level helpers (T-91)
2026-05-08 18:16:07 +02:00 · 2026-05-08 12:40:03 +02:00
4 changed files with 592 additions and 108 deletions
@@ -1,5 +1,5 @@
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    {
      "id": "Q-3",
@@ -676,7 +676,7 @@
      "title": "Event persistence + audit/undo",
      "status": "open",
      "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-4",
@@ -685,7 +685,7 @@
      "title": "`.canvas` schema compatibility with Obsidian",
      "status": "open",
      "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-5",
@@ -694,7 +694,7 @@
      "title": "IPC wire-format stability + `schema_version:`",
      "status": "open",
      "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-6",
@@ -703,7 +703,7 @@
      "title": "Window chrome — native frame vs frameless custom",
      "status": "resolved",
      "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-7",
@@ -712,7 +712,7 @@
      "title": "macOS app bundle signing / notarisation",
      "status": "open",
      "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-8",
@@ -721,7 +721,7 @@
      "title": "Extension API shape — widgets, subcommands, both?",
      "status": "open",
      "file_path": "decisions/questions-extensions.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-9",
@@ -730,7 +730,7 @@
      "title": "Lua runtime vendoring",
      "status": "open",
      "file_path": "decisions/questions-extensions.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-10",
@@ -739,7 +739,7 @@
      "title": "Extension manifest `schema_version:`",
      "status": "open",
      "file_path": "decisions/questions-extensions.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-11",
@@ -748,7 +748,7 @@
      "title": "Coverage gates — hard thresholds vs soft reporting",
      "status": "open",
      "file_path": "decisions/questions-testing.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-12",
@@ -757,7 +757,7 @@
      "title": "Screen-reader automation (axe-core via Playwright)",
      "status": "open",
      "file_path": "decisions/questions-testing.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-13",
@@ -766,7 +766,7 @@
      "title": "Web production-mode a11y",
      "status": "open",
      "file_path": "decisions/questions-accessibility.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-14",
@@ -775,7 +775,7 @@
      "title": "i18n plurals / gender / date-format tooling",
      "status": "open",
      "file_path": "decisions/questions-accessibility.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-15",
@@ -784,7 +784,7 @@
      "title": "Editor tab — full LSP vs tree-sitter-only highlight",
      "status": "open",
      "file_path": "decisions/questions-process.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-16",
@@ -793,7 +793,7 @@
      "title": "`tree-sitter-dart` grammar maintenance",
      "status": "open",
      "file_path": "decisions/questions-process.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-17",
@@ -802,7 +802,7 @@
      "title": "Icon set growth",
      "status": "open",
      "file_path": "decisions/questions-process.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-18",
@@ -811,7 +811,7 @@
      "title": "Theme hot-reload in release builds",
      "status": "open",
      "file_path": "decisions/questions-process.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-19",
@@ -820,7 +820,7 @@
      "title": "(withdrawn)",
      "status": "resolved",
      "file_path": "decisions/questions-process.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-20",
@@ -829,7 +829,7 @@
      "title": "Kernel DB service — namespaced SQL access?",
      "status": "open",
      "file_path": "decisions/questions-process.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-21",
@@ -838,7 +838,7 @@
      "title": "Pql absorbs planning vs keeps separate",
      "status": "open",
      "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-22",
@@ -847,7 +847,7 @@
      "title": "Ticket persistence strategy",
      "status": "open",
      "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-23",
@@ -856,7 +856,7 @@
      "title": "SSH-remote development — run clide against a remote workspace",
      "status": "open",
      "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-25",
@@ -865,7 +865,7 @@
      "title": "Body text face — mono everywhere vs Josefin Sans UI + mono code",
      "status": "open",
      "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-26",
@@ -874,7 +874,7 @@
      "title": "Small screen layout (\u003c 1000px)",
      "status": "open",
      "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-27",
@@ -883,7 +883,7 @@
      "title": "Two-editor split",
      "status": "open",
      "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-28",
@@ -892,7 +892,7 @@
      "title": "Terminal strip scope — shell only or logs/errors/tests",
      "status": "open",
      "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-29",
@@ -901,7 +901,7 @@
      "title": "Branch picker location",
      "status": "open",
      "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-30",
@@ -910,7 +910,7 @@
      "title": "Focus behavior when editor is dirty and viewer is peeked",
      "status": "open",
      "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "Q-31",
@@ -919,7 +919,7 @@
      "title": "XWayland fallback for frameless — proper Wayland protocol needed",
      "status": "open",
      "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "R-2",
@@ -929,7 +929,7 @@
      "status": "active",
      "date": "2026-04-20",
      "file_path": "decisions/rejected.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "R-3",
@@ -939,7 +939,7 @@
      "status": "active",
      "date": "2026-04-21",
      "file_path": "decisions/rejected.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "R-4",
@@ -949,7 +949,7 @@
      "status": "active",
      "date": "2026-04-21",
      "file_path": "decisions/rejected.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "R-5",
@@ -959,7 +959,7 @@
      "status": "active",
      "date": "2026-04-21",
      "file_path": "decisions/rejected.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "R-6",
@@ -969,7 +969,7 @@
      "status": "active",
      "date": "2026-04-21",
      "file_path": "decisions/rejected.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "R-7",
@@ -979,7 +979,7 @@
      "status": "active",
      "date": "2026-04-21",
      "file_path": "decisions/rejected.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "R-8",
@@ -989,7 +989,7 @@
      "status": "active",
      "date": "2026-04-21",
      "file_path": "decisions/rejected.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "R-9",
@@ -999,7 +999,7 @@
      "status": "active",
      "date": "2026-04-21",
      "file_path": "decisions/rejected.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "R-10",
@@ -1009,7 +1009,7 @@
      "status": "active",
      "date": "2026-04-21",
      "file_path": "decisions/rejected.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "R-11",
@@ -1019,7 +1019,7 @@
      "status": "active",
      "date": "2026-04-21",
      "file_path": "decisions/rejected.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    },
    {
      "id": "R-12",
@@ -1029,7 +1029,7 @@
      "status": "active",
      "date": "2026-04-22",
      "file_path": "decisions/rejected.md",
-      "synced_at": "2026-05-08 09:27:22"
+      "synced_at": "2026-05-08 11:03:39"
    }
  ],
  "decision_refs": [
@@ -2820,6 +2820,16 @@
      "priority": "medium",
      "created_at": "2026-05-07 19:08:29",
      "updated_at": "2026-05-07 19:08:52"
+    },
+    {
+      "id": "T-95",
+      "type": "bug",
+      "title": "TerminalGestureHandler tertiary-tap wired to secondary; middle-button mis-typed",
+      "description": "**File:** `lib/src/terminal/src/ui/gesture/gesture_handler.dart` (build wiring + state-method body) + `lib/src/terminal/src/ui/gesture/gesture_detector.dart` (dead public API).\n\n**Bug:** Middle-clicks (\"tertiary tap\") are routed through the wrong handler chain, and even the unreachable target carries a button-enum typo. Same shape as T-93 but on a different gesture pair.\n\nTrace:\n\n1. `TerminalGestureHandler.build` (gesture_handler.dart:65–82) wires:\n   ```dart\n   onTertiaryTapDown: onSecondaryTapDown,\n   onTertiaryTapUp: onSecondaryTapUp,\n   ```\n   Right-hand sides are the state's `onSecondaryTapDown` / `onSecondaryTapUp` *methods* (lines 138–144), not the tertiary equivalents. So a middle-click reaches `_tapDown(widget.onSecondaryTapDown, details, TerminalMouseButton.right)` — i.e. fires the **secondary** callback with **button=right**.\n2. The state's `onTertiaryTapDown` and `onTertiaryTapUp` methods (lines 147–152) are therefore **dead** — they're declared but never invoked anywhere.\n3. `onTertiaryTapUp` at line 152 has a copy-paste error: `TerminalMouseButton.right` where the function is named tertiary and the comment paragraph clearly intends middle. Even if the wiring were correct, the button reported on tertiary-up would be wrong.\n4. The `onTertiaryTapDown` / `onTertiaryTapUp` *parameters* on `TerminalGestureHandler` (lines 24–25, 45–47) and `TerminalGestureDetector` (lines 13–14, 30–31) are **dead public surface** — no in-tree caller passes them, like T-93's `onTapUp`.\n\n**Two layers of \"dead\" again:**\n\n- The wiring is wrong, so middle-clicks dispatch as if they were right-clicks.\n- The public API to receive proper middle-click notifications doesn't reach any caller, so even if a consumer passes `onTertiaryTapDown:` to `TerminalView`, it would do nothing today (TerminalView doesn't expose tertiary callbacks).\n\n**User-visible impact:**\n\nA consumer relying on right-click for context-menu behaviour on `TerminalView` will accidentally trigger that menu on middle-click as well, which is wrong on every desktop platform (middle-click is conventionally paste / scroll-wheel-button). Tests of secondary-tap will pass for both right- and middle-clicks, masking the issue.\n\n**Resolutions, like T-93:**\n\n- **A. Fix the wiring + typo.** In `TerminalGestureHandler.build`, change `onTertiaryTapDown: onSecondaryTapDown` to `onTertiaryTapDown: onTertiaryTapDown` (and same for Up). Fix line 152's `TerminalMouseButton.right` → `middle`. Adds a parameter on `TerminalView` (`onTertiaryTapDown` / `onTertiaryTapUp`) so consumers can register middle-click handlers. Test surfaces the new path.\n- **B. Delete the dead surface.** Remove `onTertiaryTapDown` / `onTertiaryTapUp` parameters from both `TerminalGestureHandler` and `TerminalGestureDetector`, plus the state's tertiary methods. If middle-click ever needs distinct handling, add it back deliberately. Cleanest because no caller depends on tertiary today.\n\nRecommendation: **option B**. Same logic as T-93's recommendation — the surface is documented but unwired and unused. Adding it back later with a real consumer + tests is cheaper than fixing dead surface today.\n\n**Aside:** there's a related dead branch in `onDragStart` (line 176):\n```dart\ndetails.kind == PointerDeviceKind.mouse\n    ? renderTerminal.selectCharacters(details.localPosition)\n    : renderTerminal.selectWord(details.localPosition);\n```\nThe `PanGestureRecognizer` in `TerminalGestureDetector` is registered with `supportedDevices: {PointerDeviceKind.mouse}` (gesture_detector.dart:143) — so non-mouse drags can't reach `onDragStart`. The `selectWord` else-branch is unreachable through the current wiring. Consider removing it as part of the same cleanup pass, or extending PanGestureRecognizer to accept touch.\n\n**Acceptance:**\n\n- Either:\n  - **A:** Tertiary tap parameters on `TerminalView` exist and fire on middle-click with `button=middle`. Regression test verifies a middle click reaches the user callback with the resolved cell offset.\n  - **B:** `onTertiaryTapDown` / `onTertiaryTapUp` removed from `TerminalGestureHandler`, `TerminalGestureDetector`, and the state's tertiary methods. Existing tests still pass.\n- The `selectWord` branch in `onDragStart` is either reachable (extend PanGestureRecognizer.supportedDevices) or removed.\n\n**Surfaced from:** T-91 ui/ gesture sweep. The `onTertiaryTap*` lines (gesture_handler.dart:147-152) showed as uncovered in the lcov diff — the gestures sweep skipped writing tests for them because they're unreachable production code.\n\n**Cross-references:** T-91 (epic parent), T-93 (same shape on `onTapUp`), T-89 (coverage epic).\n",
+      "status": "backlog",
+      "priority": "medium",
+      "created_at": "2026-05-08 10:48:59",
+      "updated_at": "2026-05-08 11:01:01"
    }
  ],
  "ticket_deps": null,
@@ -4512,6 +4522,12 @@
      "old_value": "backlog",
      "new_value": "cancelled",
      "changed_at": "2026-05-07 19:08:52"
+    },
+    {
+      "ticket_id": "T-95",
+      "field": "description",
+      "new_value": "**File:** `lib/src/terminal/src/ui/gesture/gesture_handler.dart` (build wiring + state-method body) + `lib/src/terminal/src/ui/gesture/gesture_detector.dart` (dead public API).\n\n**Bug:** Middle-clicks (\"tertiary tap\") are routed through the wrong handler chain, and even the unreachable target carries a button-enum typo. Same shape as T-93 but on a different gesture pair.\n\nTrace:\n\n1. `TerminalGestureHandler.build` (gesture_handler.dart:65–82) wires:\n   ```dart\n   onTertiaryTapDown: onSecondaryTapDown,\n   onTertiaryTapUp: onSecondaryTapUp,\n   ```\n   Right-hand sides are the state's `onSecondaryTapDown` / `onSecondaryTapUp` *methods* (lines 138–144), not the tertiary equivalents. So a middle-click reaches `_tapDown(widget.onSecondaryTapDown, details, TerminalMouseButton.right)` — i.e. fires the **secondary** callback with **button=right**.\n2. The state's `onTertiaryTapDown` and `onTertiaryTapUp` methods (lines 147–152) are therefore **dead** — they're declared but never invoked anywhere.\n3. `onTertiaryTapUp` at line 152 has a copy-paste error: `TerminalMouseButton.right` where the function is named tertiary and the comment paragraph clearly intends middle. Even if the wiring were correct, the button reported on tertiary-up would be wrong.\n4. The `onTertiaryTapDown` / `onTertiaryTapUp` *parameters* on `TerminalGestureHandler` (lines 24–25, 45–47) and `TerminalGestureDetector` (lines 13–14, 30–31) are **dead public surface** — no in-tree caller passes them, like T-93's `onTapUp`.\n\n**Two layers of \"dead\" again:**\n\n- The wiring is wrong, so middle-clicks dispatch as if they were right-clicks.\n- The public API to receive proper middle-click notifications doesn't reach any caller, so even if a consumer passes `onTertiaryTapDown:` to `TerminalView`, it would do nothing today (TerminalView doesn't expose tertiary callbacks).\n\n**User-visible impact:**\n\nA consumer relying on right-click for context-menu behaviour on `TerminalView` will accidentally trigger that menu on middle-click as well, which is wrong on every desktop platform (middle-click is conventionally paste / scroll-wheel-button). Tests of secondary-tap will pass for both right- and middle-clicks, masking the issue.\n\n**Resolutions, like T-93:**\n\n- **A. Fix the wiring + typo.** In `TerminalGestureHandler.build`, change `onTertiaryTapDown: onSecondaryTapDown` to `onTertiaryTapDown: onTertiaryTapDown` (and same for Up). Fix line 152's `TerminalMouseButton.right` → `middle`. Adds a parameter on `TerminalView` (`onTertiaryTapDown` / `onTertiaryTapUp`) so consumers can register middle-click handlers. Test surfaces the new path.\n- **B. Delete the dead surface.** Remove `onTertiaryTapDown` / `onTertiaryTapUp` parameters from both `TerminalGestureHandler` and `TerminalGestureDetector`, plus the state's tertiary methods. If middle-click ever needs distinct handling, add it back deliberately. Cleanest because no caller depends on tertiary today.\n\nRecommendation: **option B**. Same logic as T-93's recommendation — the surface is documented but unwired and unused. Adding it back later with a real consumer + tests is cheaper than fixing dead surface today.\n\n**Aside:** there's a related dead branch in `onDragStart` (line 176):\n```dart\ndetails.kind == PointerDeviceKind.mouse\n    ? renderTerminal.selectCharacters(details.localPosition)\n    : renderTerminal.selectWord(details.localPosition);\n```\nThe `PanGestureRecognizer` in `TerminalGestureDetector` is registered with `supportedDevices: {PointerDeviceKind.mouse}` (gesture_detector.dart:143) — so non-mouse drags can't reach `onDragStart`. The `selectWord` else-branch is unreachable through the current wiring. Consider removing it as part of the same cleanup pass, or extending PanGestureRecognizer to accept touch.\n\n**Acceptance:**\n\n- Either:\n  - **A:** Tertiary tap parameters on `TerminalView` exist and fire on middle-click with `button=middle`. Regression test verifies a middle click reaches the user callback with the resolved cell offset.\n  - **B:** `onTertiaryTapDown` / `onTertiaryTapUp` removed from `TerminalGestureHandler`, `TerminalGestureDetector`, and the state's tertiary methods. Existing tests still pass.\n- The `selectWord` branch in `onDragStart` is either reachable (extend PanGestureRecognizer.supportedDevices) or removed.\n\n**Surfaced from:** T-91 ui/ gesture sweep. The `onTertiaryTap*` lines (gesture_handler.dart:147-152) showed as uncovered in the lcov diff — the gestures sweep skipped writing tests for them because they're unreachable production code.\n\n**Cross-references:** T-91 (epic parent), T-93 (same shape on `onTapUp`), T-89 (coverage epic).\n",
+      "changed_at": "2026-05-08 11:01:01"
    }
  ]
 }
@@ -18,7 +18,7 @@ repository: https://github.com/postmeridiem/clide

 # Pre-push line-coverage floor. Ratchets up only — see D-66.
 # Reading: `awk -F: '/^coverage_floor:/ {gsub(/ /,"",$2); print $2}' pubspec.yaml`.
-coverage_floor: 68
+coverage_floor: 69

 # Project metadata (was project.yaml, folded in per D-056).
 # version: above is the single source of truth. The Makefile reads
@@ -339,6 +339,85 @@ void main() {
    });
  });

+  group('TerminalView — selection gestures', () {
+    // Cover the gesture_handler.dart selection paths and the gesture_detector
+    // double-tap detection branch. Each test sets up a TerminalView with a
+    // controller it can inspect; the gestures are wired into the
+    // RenderTerminal which mutates `controller.selection`.
+    // Empty cells (codepoint 0) and ASCII space are word separators in
+    // `defaultWordSeparators`, so taps must land on a non-separator cell for
+    // selectWord to return non-null. Write a wide stripe of 'a's at row 0
+    // and tap near the top-left so the gesture lands on actual content.
+    Offset contentPosition(WidgetTester tester) {
+      final tl = tester.getTopLeft(find.byType(TerminalView));
+      return tl + const Offset(20, 5);
+    }
+
+    testWidgets('double-tap sets a word selection on the controller', (tester) async {
+      final t = _OutputRecorder().build();
+      t.write('a' * 30);
+      final controller = TerminalController();
+      addTearDown(controller.dispose);
+      await tester.pumpWidget(_host(TerminalView(t, controller: controller)));
+      await tester.pump();
+      final pos = contentPosition(tester);
+      // Two tap-up cycles within kDoubleTapTimeout (~300 ms). The second
+      // tap-down hits the within-tolerance branch in gesture_detector and
+      // fires onDoubleTapDown, which in turn calls renderTerminal.selectWord.
+      await tester.tapAt(pos);
+      await tester.tapAt(pos);
+      await tester.pump(const Duration(seconds: 1));
+      expect(controller.selection, isNotNull);
+    });
+
+    testWidgets('long-press (touch) selects a word', (tester) async {
+      final t = _OutputRecorder().build();
+      t.write('a' * 30);
+      final controller = TerminalController();
+      addTearDown(controller.dispose);
+      await tester.pumpWidget(_host(TerminalView(t, controller: controller)));
+      await tester.pump();
+      final pos = contentPosition(tester);
+      final gesture = await tester.startGesture(pos, kind: PointerDeviceKind.touch);
+      // LongPressGestureRecognizer's threshold is kLongPressTimeout (~500 ms);
+      // pump past it to win the gesture.
+      await tester.pump(const Duration(milliseconds: 600));
+      // onLongPressStart → renderTerminal.selectWord → controller.selection set.
+      expect(controller.selection, isNotNull);
+      // Move during long-press → onLongPressMoveUpdate, second branch of
+      // selectWord with two offsets.
+      await gesture.moveBy(const Offset(40, 0));
+      await tester.pump();
+      expect(controller.selection, isNotNull);
+      await gesture.up();
+      await tester.pump(const Duration(seconds: 1));
+    });
+
+    testWidgets('mouse drag selects characters (selectCharacters branch)', (tester) async {
+      final t = _OutputRecorder().build();
+      t.write('a' * 30);
+      final controller = TerminalController();
+      addTearDown(controller.dispose);
+      await tester.pumpWidget(_host(TerminalView(t, controller: controller)));
+      await tester.pump();
+      final pos = contentPosition(tester);
+      final gesture = await tester.startGesture(pos, kind: PointerDeviceKind.mouse);
+      // PanGestureRecognizer needs movement beyond kPanSlop to win — push
+      // past it before reading the selection.
+      await gesture.moveBy(const Offset(40, 0));
+      await tester.pump();
+      // onDragStart fired with mouse kind → selectCharacters(from); subsequent
+      // onDragUpdate → selectCharacters(from, to). Either way, controller has
+      // a selection.
+      expect(controller.selection, isNotNull);
+      await gesture.moveBy(const Offset(20, 0));
+      await tester.pump();
+      expect(controller.selection, isNotNull);
+      await gesture.up();
+      await tester.pump(const Duration(seconds: 1));
+    });
+  });
+
  group('TerminalView — keyboard visibility', () {
    testWidgets('platform keyboard show fires _onKeyboardShow on the focused view', (tester) async {
      final t = _OutputRecorder().build();
@@ -0,0 +1,389 @@
+/// Widget tests for `lib/src/terminal/src/ui/` widget-level helpers
+/// (CustomKeyboardListener, KeyboardVisibilty, InfiniteScrollView,
+/// TerminalScrollGestureHandler).
+library;
+
+import 'package:clide/src/terminal/src/core/buffer/cell_offset.dart';
+import 'package:clide/src/terminal/src/core/mouse/mode.dart';
+import 'package:clide/src/terminal/src/terminal.dart';
+import 'package:clide/src/terminal/src/ui/infinite_scroll_view.dart';
+import 'package:clide/src/terminal/src/ui/keyboard_listener.dart';
+import 'package:clide/src/terminal/src/ui/keyboard_visibility.dart';
+import 'package:clide/src/terminal/src/ui/scroll_handler.dart';
+import 'package:flutter/gestures.dart';
+import 'package:flutter/services.dart';
+import 'package:flutter/widgets.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+Widget _host(Widget child, {double width = 400, double height = 200}) {
+  return Directionality(
+    textDirection: TextDirection.ltr,
+    child: MediaQuery(
+      data: const MediaQueryData(),
+      child: Center(
+        child: SizedBox(width: width, height: height, child: child),
+      ),
+    ),
+  );
+}
+
+void main() {
+  group('CustomKeyboardListener', () {
+    testWidgets('falls through to onInsert when onKeyEvent returns ignored and a character is present', (tester) async {
+      final inserts = <String>[];
+      final composings = <String?>[];
+      final focus = FocusNode();
+      addTearDown(focus.dispose);
+
+      await tester.pumpWidget(_host(
+        CustomKeyboardListener(
+          focusNode: focus,
+          autofocus: true,
+          onInsert: inserts.add,
+          onComposing: composings.add,
+          onKeyEvent: (_, __) => KeyEventResult.ignored,
+          child: const ColoredBox(color: Color(0xFF000000), child: SizedBox.expand()),
+        ),
+      ));
+      await tester.pump();
+      // A character key with non-empty `character` triggers the insert path.
+      await tester.sendKeyEvent(LogicalKeyboardKey.keyA, character: 'a');
+      await tester.pump();
+      expect(inserts, contains('a'));
+    });
+
+    testWidgets('does not call onInsert when onKeyEvent returns handled', (tester) async {
+      final inserts = <String>[];
+      final focus = FocusNode();
+      addTearDown(focus.dispose);
+
+      await tester.pumpWidget(_host(
+        CustomKeyboardListener(
+          focusNode: focus,
+          autofocus: true,
+          onInsert: inserts.add,
+          onComposing: (_) {},
+          onKeyEvent: (_, __) => KeyEventResult.handled,
+          child: const ColoredBox(color: Color(0xFF000000), child: SizedBox.expand()),
+        ),
+      ));
+      await tester.pump();
+      await tester.sendKeyEvent(LogicalKeyboardKey.keyA, character: 'a');
+      await tester.pump();
+      expect(inserts, isEmpty);
+    });
+
+    testWidgets('does not call onInsert when the key event has no character', (tester) async {
+      final inserts = <String>[];
+      final focus = FocusNode();
+      addTearDown(focus.dispose);
+
+      await tester.pumpWidget(_host(
+        CustomKeyboardListener(
+          focusNode: focus,
+          autofocus: true,
+          onInsert: inserts.add,
+          onComposing: (_) {},
+          onKeyEvent: (_, __) => KeyEventResult.ignored,
+          child: const ColoredBox(color: Color(0xFF000000), child: SizedBox.expand()),
+        ),
+      ));
+      await tester.pump();
+      // ArrowUp has no `character` — ignored result + no character means
+      // _onKeyEvent returns ignored without firing onInsert.
+      await tester.sendKeyEvent(LogicalKeyboardKey.arrowUp);
+      await tester.pump();
+      expect(inserts, isEmpty);
+    });
+  });
+
+  group('KeyboardVisibilty', () {
+    testWidgets('fires onKeyboardShow when bottom inset goes positive, onKeyboardHide when it returns to 0', (tester) async {
+      var shows = 0;
+      var hides = 0;
+      await tester.pumpWidget(_host(
+        KeyboardVisibilty(
+          onKeyboardShow: () => shows++,
+          onKeyboardHide: () => hides++,
+          child: const ColoredBox(color: Color(0xFF000000), child: SizedBox.expand()),
+        ),
+      ));
+      await tester.pump();
+
+      // Simulate keyboard appearance.
+      tester.view.viewInsets = const FakeViewPadding(bottom: 200, left: 0, right: 0, top: 0);
+      tester.binding.handleMetricsChanged();
+      await tester.pump();
+      expect(shows, 1);
+      expect(hides, 0);
+
+      // Simulate keyboard dismissal.
+      tester.view.resetViewInsets();
+      tester.binding.handleMetricsChanged();
+      await tester.pump();
+      expect(hides, 1);
+    });
+
+    testWidgets('repeated metrics events with the same bottom inset fire callbacks only when the inset changes', (tester) async {
+      var shows = 0;
+      await tester.pumpWidget(_host(
+        KeyboardVisibilty(
+          onKeyboardShow: () => shows++,
+          child: const ColoredBox(color: Color(0xFF000000), child: SizedBox.expand()),
+        ),
+      ));
+      await tester.pump();
+
+      tester.view.viewInsets = const FakeViewPadding(bottom: 200, left: 0, right: 0, top: 0);
+      tester.binding.handleMetricsChanged();
+      await tester.pump();
+      // Fire metrics again with the same inset — should not trigger again.
+      tester.binding.handleMetricsChanged();
+      await tester.pump();
+      expect(shows, 1);
+      addTearDown(tester.view.resetViewInsets);
+    });
+  });
+
+  group('InfiniteScrollView', () {
+    testWidgets('reports a scroll offset to onScroll when the viewport position moves', (tester) async {
+      final offsets = <double>[];
+      await tester.pumpWidget(_host(
+        InfiniteScrollView(
+          onScroll: offsets.add,
+          child: const SizedBox(width: 400, height: 1000),
+        ),
+      ));
+      await tester.pump();
+
+      // Drive the underlying ViewportOffset by sending a scroll event into
+      // the Scrollable.
+      final scrollable = find.byType(Scrollable);
+      await tester.drag(scrollable, const Offset(0, -100));
+      await tester.pumpAndSettle();
+      expect(offsets, isNotEmpty);
+    });
+
+    testWidgets('updates render object when onScroll callback identity changes', (tester) async {
+      var firstCalls = 0;
+      var secondCalls = 0;
+      Widget build(void Function(double) cb) => _host(
+            InfiniteScrollView(
+              onScroll: cb,
+              child: const SizedBox(width: 400, height: 1000),
+            ),
+          );
+
+      await tester.pumpWidget(build((_) => firstCalls++));
+      await tester.pump();
+      await tester.drag(find.byType(Scrollable), const Offset(0, -50));
+      await tester.pumpAndSettle();
+      final firstCount = firstCalls;
+      expect(firstCount, isPositive);
+
+      // Swap callback identity — render object's onScroll setter must update.
+      await tester.pumpWidget(build((_) => secondCalls++));
+      await tester.pump();
+      await tester.drag(find.byType(Scrollable), const Offset(0, -50));
+      await tester.pumpAndSettle();
+      expect(secondCalls, isPositive);
+      expect(firstCalls, firstCount); // first stops firing after swap
+    });
+  });
+
+  group('TerminalScrollGestureHandler', () {
+    testWidgets('main-buffer mode passes through without intercepting scroll', (tester) async {
+      final terminal = Terminal(maxLines: 100);
+      final handlerCalls = <Offset>[];
+
+      await tester.pumpWidget(_host(
+        TerminalScrollGestureHandler(
+          terminal: terminal,
+          getCellOffset: (offset) {
+            handlerCalls.add(offset);
+            return const CellOffset(0, 0);
+          },
+          getLineHeight: () => 14.0,
+          child: const ColoredBox(color: Color(0xFF000000), child: SizedBox.expand()),
+        ),
+      ));
+      await tester.pump();
+      // Main-buffer mode → the handler returns the child directly, no
+      // Listener around it. Sending a scroll event reaches nothing.
+      final pos = tester.getCenter(find.byType(TerminalScrollGestureHandler));
+      final mouse = await tester.createGesture(kind: PointerDeviceKind.mouse);
+      await mouse.addPointer(location: pos);
+      await tester.sendEventToBinding(PointerScrollEvent(
+        position: pos,
+        scrollDelta: const Offset(0, 100),
+      ));
+      await tester.pump();
+      expect(handlerCalls, isEmpty);
+    });
+
+    testWidgets('alt-buffer mode intercepts scroll; falls back to keyInput when terminal does not handle the mouse event', (tester) async {
+      final outputs = <String>[];
+      final terminal = Terminal(maxLines: 100, onOutput: outputs.add);
+      terminal.useAltBuffer();
+      // No mouse mode set on the terminal — mouseInput will return false,
+      // so the simulateScroll fallback kicks in (sends arrow keys).
+
+      await tester.pumpWidget(_host(
+        TerminalScrollGestureHandler(
+          terminal: terminal,
+          getCellOffset: (_) => const CellOffset(0, 0),
+          getLineHeight: () => 14.0,
+          child: const ColoredBox(color: Color(0xFF000000), child: SizedBox.expand()),
+        ),
+      ));
+      await tester.pump();
+      // Confirm the Listener is in the tree (isAltBuffer recognised on
+      // initial build).
+      expect(find.byType(Listener), findsOneWidget);
+
+      final pos = tester.getCenter(find.byType(TerminalScrollGestureHandler));
+      final mouse = await tester.createGesture(kind: PointerDeviceKind.mouse);
+      await mouse.addPointer(location: pos);
+      await tester.sendEventToBinding(PointerScrollEvent(
+        position: pos,
+        scrollDelta: const Offset(0, 100),
+      ));
+      await tester.pump();
+      // Falls back to TerminalKey.arrowDown via simulateScroll path → emits
+      // an escape via the default keytab.
+      expect(outputs, isNotEmpty);
+    });
+
+    testWidgets('alt-buffer mode + active mouse mode forwards as a real mouse event (no key fallback)', (tester) async {
+      final outputs = <String>[];
+      final terminal = Terminal(maxLines: 100, onOutput: outputs.add);
+      terminal.useAltBuffer();
+      // Activate a mouse mode so terminal.mouseInput consumes wheel events.
+      terminal.setMouseMode(MouseMode.upDownScroll);
+
+      await tester.pumpWidget(_host(
+        TerminalScrollGestureHandler(
+          terminal: terminal,
+          getCellOffset: (_) => const CellOffset(0, 0),
+          getLineHeight: () => 14.0,
+          child: const ColoredBox(color: Color(0xFF000000), child: SizedBox.expand()),
+        ),
+      ));
+      await tester.pump();
+      final pos = tester.getCenter(find.byType(TerminalScrollGestureHandler));
+      final mouse = await tester.createGesture(kind: PointerDeviceKind.mouse);
+      await mouse.addPointer(location: pos);
+      await tester.sendEventToBinding(PointerScrollEvent(
+        position: pos,
+        scrollDelta: const Offset(0, 100),
+      ));
+      await tester.pump();
+      // Mouse-mode active → mouseInput consumes; output is the mouse-report
+      // escape, not a PgDown / arrow.
+      expect(outputs, isNotEmpty);
+    });
+
+    testWidgets('alt-buffer mode with simulateScroll=false drops scrolls when the terminal does not consume them', (tester) async {
+      final outputs = <String>[];
+      final terminal = Terminal(maxLines: 100, onOutput: outputs.add);
+      terminal.useAltBuffer();
+
+      await tester.pumpWidget(_host(
+        TerminalScrollGestureHandler(
+          terminal: terminal,
+          getCellOffset: (_) => const CellOffset(0, 0),
+          getLineHeight: () => 14.0,
+          simulateScroll: false,
+          child: const ColoredBox(color: Color(0xFF000000), child: SizedBox.expand()),
+        ),
+      ));
+      await tester.pump();
+      final pos = tester.getCenter(find.byType(TerminalScrollGestureHandler));
+      final mouse = await tester.createGesture(kind: PointerDeviceKind.mouse);
+      await mouse.addPointer(location: pos);
+      await tester.sendEventToBinding(PointerScrollEvent(
+        position: pos,
+        scrollDelta: const Offset(0, 100),
+      ));
+      await tester.pump();
+      // Terminal didn't consume + simulateScroll false → no output at all.
+      expect(outputs, isEmpty);
+    });
+
+    testWidgets('switching the terminal into alt buffer flips the handler from passthrough to intercepting', (tester) async {
+      final terminal = Terminal(maxLines: 100);
+      await tester.pumpWidget(_host(
+        TerminalScrollGestureHandler(
+          terminal: terminal,
+          getCellOffset: (_) => const CellOffset(0, 0),
+          getLineHeight: () => 14.0,
+          child: const ColoredBox(color: Color(0xFF000000), child: SizedBox.expand()),
+        ),
+      ));
+      await tester.pump();
+      // Initially main-buffer → no Listener wrapping.
+      expect(find.byType(Listener), findsNothing);
+
+      terminal.useAltBuffer();
+      terminal.write(''); // notifyListeners via parser.write
+      await tester.pump();
+      // Alt-buffer → Listener wraps the child.
+      expect(find.byType(Listener), findsOneWidget);
+    });
+
+    testWidgets('alt-buffer Listener tracks pointer-down location for scroll-event positioning', (tester) async {
+      // Covers the onPointerDown handler that captures _lastPointerPosition
+      // for use by the next scroll event.
+      final outputs = <String>[];
+      final terminal = Terminal(maxLines: 100, onOutput: outputs.add)..useAltBuffer();
+      final cellOffsets = <Offset>[];
+      await tester.pumpWidget(_host(
+        TerminalScrollGestureHandler(
+          terminal: terminal,
+          getCellOffset: (offset) {
+            cellOffsets.add(offset);
+            return const CellOffset(0, 0);
+          },
+          getLineHeight: () => 14.0,
+          child: const ColoredBox(
+            color: Color(0xFF000000),
+            child: SizedBox.expand(),
+          ),
+        ),
+      ));
+      await tester.pump();
+      final pos = tester.getCenter(find.byType(TerminalScrollGestureHandler));
+      // Press first — that triggers onPointerDown which records the
+      // position into _lastPointerPosition.
+      final mouse = await tester.startGesture(pos, kind: PointerDeviceKind.mouse);
+      // Now scroll — getCellOffset is called with _lastPointerPosition.
+      await tester.sendEventToBinding(PointerScrollEvent(
+        position: pos,
+        scrollDelta: const Offset(0, 100),
+      ));
+      await tester.pump();
+      await mouse.up();
+      await tester.pumpAndSettle();
+      expect(cellOffsets, isNotEmpty);
+    });
+
+    testWidgets('didUpdateWidget rebinds listeners when the terminal instance changes', (tester) async {
+      final t1 = Terminal(maxLines: 100);
+      final t2 = Terminal(maxLines: 100)..useAltBuffer();
+      Widget build(Terminal t) => _host(
+            TerminalScrollGestureHandler(
+              terminal: t,
+              getCellOffset: (_) => const CellOffset(0, 0),
+              getLineHeight: () => 14.0,
+              child: const ColoredBox(color: Color(0xFF000000), child: SizedBox.expand()),
+            ),
+          );
+      await tester.pumpWidget(build(t1));
+      await tester.pump();
+      await tester.pumpWidget(build(t2));
+      await tester.pump();
+      // The Listener should now be present because t2 is in alt-buffer.
+      expect(find.byType(Listener), findsOneWidget);
+    });
+  });
+}