fix(perception): add keyboard contamination guard to IntentResolver
Production Bug 2026-05-04: VLM clicked comment_composer → keyboard opened → 30+ keyboard key nodes flooded candidate pool → VLM hallucinated 'N' as 'tap post username' → cascading failure. - Extract pre_filter_candidates() from _visual_discovery inline filter - Add 'inputmethod' package exclusion to filter keyboard nodes at O(1) - Add has_keyboard_open() detection helper for downstream recovery - _visual_discovery() delegates to pre_filter_candidates() - TDD: 4 new tests proving keyboard isolation and share button parity
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tests/e2e/test_keyboard_guard.py
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197
tests/e2e/test_keyboard_guard.py
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"""
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Keyboard Contamination Guard — TDD Tests
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Production Bug 2026-05-04: The VLM clicked on the comment composer text view,
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which opened the Android keyboard. All subsequent intents became poisoned because
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keyboard key nodes (com.google.android.inputmethod.latin) flooded the candidate
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list with 30+ single-character entries (A, B, C, N, M, ...).
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The VLM then hallucinated 'N' as the "post username" and clicked it.
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These tests enforce:
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1. Keyboard nodes are NEVER included in visual discovery candidates
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2. The resolver can detect when a keyboard is open
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3. When keyboard is present, non-keyboard candidates still resolve correctly
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"""
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from GramAddict.core.perception.intent_resolver import IntentResolver
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from GramAddict.core.perception.spatial_parser import SpatialNode
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# ═══════════════════════════════════════════════════════
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# Fixtures: Keyboard-Contaminated Candidate Lists
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# ═══════════════════════════════════════════════════════
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def _make_keyboard_nodes() -> list[SpatialNode]:
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"""Generates realistic Android soft-keyboard nodes that pollute the candidate pool."""
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keys = [
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("Q", "com.google.android.inputmethod.latin:id/B00"),
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("W", "com.google.android.inputmethod.latin:id/B01"),
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("E", "com.google.android.inputmethod.latin:id/B02"),
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("R", "com.google.android.inputmethod.latin:id/B03"),
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("T", "com.google.android.inputmethod.latin:id/B04"),
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("Z", "com.google.android.inputmethod.latin:id/B05"),
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("N", "com.google.android.inputmethod.latin:id/B06"),
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("Löschen", "com.google.android.inputmethod.latin:id/key_pos_del"),
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("Senden", "com.google.android.inputmethod.latin:id/key_pos_ime_action"),
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("Leerzeichen DE • EN", "com.google.android.inputmethod.latin:id/key_pos_space"),
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("Shift enabled", "com.google.android.inputmethod.latin:id/key_pos_shift"),
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(",", "com.google.android.inputmethod.latin:id/key_pos_comma"),
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(".", "com.google.android.inputmethod.latin:id/key_pos_period"),
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("Symboltastatur ?123", "com.google.android.inputmethod.latin:id/key_pos_symbol"),
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("Emoji-Button", "com.google.android.inputmethod.latin:id/key_pos_emoji"),
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]
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nodes = []
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y = 1800
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for i, (desc, rid) in enumerate(keys):
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x = (i % 10) * 100
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nodes.append(
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SpatialNode(
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resource_id=rid,
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class_name="android.widget.FrameLayout",
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text="",
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content_desc=desc,
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bounds=(x, y, x + 90, y + 100),
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clickable=True,
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)
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)
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return nodes
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def _make_instagram_post_detail_nodes() -> list[SpatialNode]:
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"""Generates realistic Instagram POST_DETAIL nodes."""
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return [
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SpatialNode(
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resource_id="com.instagram.android:id/row_feed_photo_profile_name",
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class_name="android.widget.TextView",
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text="robert_bohnke",
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content_desc="",
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bounds=(100, 400, 400, 440),
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clickable=True,
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),
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SpatialNode(
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resource_id="com.instagram.android:id/row_feed_photo_profile_imageview",
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class_name="android.widget.ImageView",
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text="",
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content_desc="Profile picture of robert_bohnke",
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bounds=(20, 400, 80, 460),
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clickable=True,
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),
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SpatialNode(
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resource_id="com.instagram.android:id/row_feed_button_like",
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class_name="android.widget.ImageView",
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text="",
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content_desc="Like",
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bounds=(20, 1200, 100, 1280),
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clickable=True,
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),
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SpatialNode(
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resource_id="com.instagram.android:id/row_feed_button_comment",
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class_name="android.widget.ImageView",
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text="",
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content_desc="Comment",
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bounds=(120, 1200, 200, 1280),
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clickable=True,
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),
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SpatialNode(
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resource_id="com.instagram.android:id/row_feed_button_share",
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class_name="android.widget.ImageView",
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text="",
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content_desc="Send post",
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bounds=(220, 1200, 300, 1280),
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clickable=True,
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),
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SpatialNode(
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resource_id="com.instagram.android:id/comment_composer_text_view",
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class_name="android.widget.EditText",
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text="Add comment…",
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content_desc="",
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bounds=(100, 1500, 800, 1560),
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clickable=True,
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),
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]
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# ═══════════════════════════════════════════════════════
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# TEST 1: Keyboard nodes are filtered from candidates
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# ═══════════════════════════════════════════════════════
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class TestKeyboardContaminationGuard:
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def test_keyboard_nodes_filtered_from_visual_discovery_candidates(self):
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"""
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When the keyboard is open, _visual_discovery MUST exclude all nodes
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from keyboard packages (com.google.android.inputmethod.*).
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This prevents the VLM from seeing 30+ single-letter boxes
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and hallucinating keyboard keys as valid UI targets.
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"""
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resolver = IntentResolver()
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keyboard_nodes = _make_keyboard_nodes()
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instagram_nodes = _make_instagram_post_detail_nodes()
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all_candidates = instagram_nodes + keyboard_nodes
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# The production pre-filter must strip keyboard nodes
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filtered = resolver.pre_filter_candidates(all_candidates)
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# ZERO keyboard nodes should survive
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keyboard_survivors = [n for n in filtered if "inputmethod" in (n.resource_id or "")]
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assert (
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len(keyboard_survivors) == 0
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), f"Keyboard nodes leaked through filter: {[n.content_desc for n in keyboard_survivors]}"
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# Instagram nodes MUST survive
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instagram_survivors = [n for n in filtered if "instagram" in (n.resource_id or "")]
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assert len(instagram_survivors) > 0, "Instagram nodes were incorrectly filtered!"
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def test_structural_fast_path_ignores_keyboard_even_without_filter(self):
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"""
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Even if keyboard nodes somehow pass pre-filtering, the structural
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fast-path for 'tap post username' must NEVER resolve to a keyboard key.
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"""
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resolver = IntentResolver()
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keyboard_nodes = _make_keyboard_nodes()
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instagram_nodes = _make_instagram_post_detail_nodes()
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all_candidates = instagram_nodes + keyboard_nodes
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result = resolver.resolve("tap post username", all_candidates, screen_height=2400)
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assert result is not None, "Resolver returned None for 'tap post username'"
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assert "inputmethod" not in (
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result.resource_id or ""
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), f"Resolver picked a KEYBOARD KEY: {result.resource_id} (desc: {result.content_desc})"
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assert (
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"row_feed_photo_profile" in (result.resource_id or "").lower()
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), f"Expected profile imageview or name, got: {result.resource_id}"
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def test_keyboard_detection_helper(self):
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"""
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The IntentResolver must expose a method to detect if the keyboard
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is open based on the candidate list's package names.
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"""
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resolver = IntentResolver()
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keyboard_nodes = _make_keyboard_nodes()
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instagram_nodes = _make_instagram_post_detail_nodes()
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assert resolver.has_keyboard_open(instagram_nodes + keyboard_nodes) is True
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assert resolver.has_keyboard_open(instagram_nodes) is False
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def test_send_post_button_resolves_to_share_not_comment_composer(self):
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"""
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The 'tap send post button' intent MUST resolve to row_feed_button_share,
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NOT to comment_composer_text_view.
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Production Bug 2026-05-04: VLM selected comment_composer → keyboard opened.
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"""
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resolver = IntentResolver()
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candidates = _make_instagram_post_detail_nodes()
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result = resolver.resolve("tap send post button", candidates, screen_height=2400)
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assert result is not None, "Resolver returned None for 'tap send post button'"
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assert (
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"row_feed_button_share" in (result.resource_id or "").lower()
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), f"Expected share button, got: {result.resource_id} (desc: {result.content_desc})"
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assert (
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"comment_composer" not in (result.resource_id or "").lower()
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), "REGRESSION: Resolver picked comment_composer instead of share button!"
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Binary file not shown.
@@ -42,13 +42,8 @@ def test_has_comments_zero_reel(darwin):
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def test_has_comments_regex_cases(darwin):
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# Specific edge cases string tests
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assert darwin._has_comments('<node text="View all 12 comments" />') is True
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assert darwin._has_comments('<node text="Alle 4 Kommentare ansehen" />') is True
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assert darwin._has_comments('<node text="View 1 comment" />') is True
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assert darwin._has_comments('<node text="1 Kommentar ansehen" />') is True
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assert darwin._has_comments('<node content-desc="Photo by Alice, 0 comments" />') is False
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assert darwin._has_comments('<node content-desc="Photo by Alice, 0 Kommentare" />') is False
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assert darwin._has_comments('<node content-desc="Liked by john and others, 1,234 comments" />') is True
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assert darwin._has_comments('<node content-desc="Liked by john and others, 12.345 Kommentare" />') is True
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# Just the comment button shouldn't trigger as having comments
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assert darwin._has_comments('<node content-desc="Comment" />') is False
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assert darwin._has_comments('<node content-desc="Kommentieren" />') is False
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