pmacs/tests
Levi Neuwirth 1e054f7109
docs(zoom): the ties both round up, they do not oppose
Review caught the explanation of the 0.015 round-trip break, not the
fix. Three copies of it claimed 16.015 rounds up while 16.005 rounds
down --- "opposite directions". Both round UP.

Verified rather than reasoned about: at the point the quantizer sees
them, 16.015 * 100 is exactly 1601.5 and 16.005 * 100 is exactly
1600.5. Both are exact ties, and half-up sends both away from zero.

So the mechanism is not opposed rounding, it is that half-up is not
symmetric under negation. Rounding up on the way in adds half a
centi-pixel; rounding up on the way out adds another, so the two
errors ACCUMULATE instead of cancelling, and 16.00 -> 16.02 -> 16.01
ends one centi-pixel high. "Opposite directions" would have predicted
them cancelling, which is the reverse of what happens.

Corrected in all three places that carried it: the module comment, the
test's doc comment, and framing section 3.2.

Comments only --- no behavior change, and the witness values in the
tests were already right. Zoom suite still 15/15.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016bqGA6s9tTUFzYpbeW3tai
2026-08-06 17:50:03 +02:00
..
common test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
fixtures V0.2-prerequisite pull-forward + M10.11 clean audit round 2026-05-18 10:31:31 -04:00
support docs: record the pipe-masking gate trap in the handoff 2026-07-29 12:25:29 -04:00
acceptance.rs Collapse if-let nests into let-chains (MSRV-1.95 collapsible_if sweep) 2026-05-18 14:29:36 -04:00
ambient_isolation_acceptance.rs fix(isolation): the isolation suite must not itself be ambient 2026-07-31 19:46:18 -04:00
auto_indent_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
auto_indent_crdt_acceptance.rs fix(lint): make the crdt targets pass clippy for the first time 2026-08-01 09:38:36 -04:00
auto_pair_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
auto_pair_crdt_acceptance.rs feat(edit): auto-pairing (Arc 2) 2026-07-11 17:11:56 +01:00
autosave_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
bottom_panel_stage1_acceptance.rs test(panel): pin that the OMITTED default degrades on a pre-panel frontend 2026-08-03 11:16:08 -04:00
bottom_panel_stage2a_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
bottom_panel_stage2b_daemon_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
bottom_panel_stage2b_gpu_acceptance.rs fix(lint): make the crdt targets pass clippy for the first time 2026-08-01 09:38:36 -04:00
bottom_panel_stage2b_protocol_acceptance.rs feat(bottom-panel): split the GPU document bottom into three boundaries 2026-07-29 18:30:57 -04:00
comment_toggle_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
compile_mode_acceptance.rs feat(panel): flip the adopter default — Arc 7's last step 2026-08-03 11:10:14 -04:00
compile_mode_crdt_acceptance.rs review round 1: the crdt suite Stage 3 missed, and two stale explanations 2026-08-04 12:08:28 +02:00
completion_popup_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
config_registry_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
cua_region_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
desktop_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
dired_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
discovery_acceptance.rs fix(help): forwarders must work programmatically, not only from M-x 2026-07-31 20:31:00 -04:00
editops_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
find_file_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
folding_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
folding_stage2_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
full_grid_resync_acceptance.rs fix(frontend): honor full_grid — the flag existed and nothing read it 2026-08-06 15:05:59 +02:00
gpu_font_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
gpu_initial_target_acceptance.rs Implement session-scoped GPU initial targets 2026-07-23 19:03:25 -04:00
gpu_invocation_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
gui_zoom_acceptance.rs docs(zoom): the ties both round up, they do not oppose 2026-08-06 17:50:03 +02:00
injection_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
journey_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
kill_ring_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
lean4_server_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
lean4_stage1_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
lean_input_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
listview_acceptance.rs fix(listview): ids must also be unique and not NaN 2026-08-05 23:06:25 +02:00
lsp_dispatch_seams_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
lsp_multi_root_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
lsp_spawn_guidance_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m3_acceptance.rs Initial commit: v0.1.0 2026-05-03 19:51:06 -04:00
m4_acceptance.rs test(listview): byte-identity for the flat consumers, and two findings 2026-08-05 16:31:31 +02:00
m5_5_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m5_6_acceptance.rs Initial commit: v0.1.0 2026-05-03 19:51:06 -04:00
m5_7_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m5_8_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m5_perf_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m6_4_repl_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m6_5_repl_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m6_7_scrollback_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m6_8_multi_repl_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m6_perf_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m7_3_acceptance.rs Fix CI and Documentation issues 2026-05-04 10:19:19 -04:00
m7_5_acceptance.rs fix(packages): basename-collision reject, SHA-256 cache key, timeout thread join, commit→revision, dead-code (F-005/F-009–F-012) 2026-07-03 18:47:23 -04:00
m7_6_acceptance.rs fix(packages): basename-collision reject, SHA-256 cache key, timeout thread join, commit→revision, dead-code (F-005/F-009–F-012) 2026-07-03 18:47:23 -04:00
m7_7_acceptance.rs M7 tail: package system, audit lint, lockfile, resolver 2026-05-07 16:50:37 -04:00
m7_8_acceptance.rs M7 tail: package system, audit lint, lockfile, resolver 2026-05-07 16:50:37 -04:00
m7_9_acceptance.rs M7 tail: package system, audit lint, lockfile, resolver 2026-05-07 16:50:37 -04:00
m7_10_acceptance.rs fix(packages): basename-collision reject, SHA-256 cache key, timeout thread join, commit→revision, dead-code (F-005/F-009–F-012) 2026-07-03 18:47:23 -04:00
m7_11_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m7_review_acceptance.rs M7 tail: package system, audit lint, lockfile, resolver 2026-05-07 16:50:37 -04:00
m8_1_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m8_1c_acceptance.rs M7 tail: package system, audit lint, lockfile, resolver 2026-05-07 16:50:37 -04:00
m8_1d_acceptance.rs M7 tail: package system, audit lint, lockfile, resolver 2026-05-07 16:50:37 -04:00
m8_2_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m8_3_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m8_5_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m8_6_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m8_7_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m8_9_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m8_10_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m9_1_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m9_2_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m9_3_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m9_4_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m9_5_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m9_6_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m9_7_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m9_8_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
m10_2_perf.rs M10.10 ship gate 2026-05-13 16:28:46 -04:00
m10_10_perf.rs M10.10 ship gate 2026-05-13 16:28:46 -04:00
m10_10_postcard_unknown_variant.rs M10.10 ship gate 2026-05-13 16:28:46 -04:00
m10_11_acceptance.rs M11.1: semantic-frontend protocol scaffolding (wire + capability) 2026-05-18 19:39:07 -04:00
m10_11_perf.rs M10.11: adversarial two-laptop acceptance + jitter; the M10 arc verified 2026-05-15 20:51:00 -04:00
m11_5_semantic_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
mode_system_wiring_acceptance.rs Keep the v21 panel wire dark for v20 clients 2026-07-28 14:08:17 -04:00
overlay_reattach_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
persistence_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
query_replace_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
resource_reconciliation_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
save_clobber_guard_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
statusline_segments_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
tab_width_acceptance.rs feat(fold): Stage 2 — grid (daemon-rendered) collapse 2026-07-23 19:24:07 -04:00
terminal_config_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
terminal_copy_mode_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
theme_faces_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
typed_edit_chain_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
vterm_stage1_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00
vterm_stage2_acceptance.rs fix(test): retire R2 and R4 — two readiness predicates weaker than their assertions 2026-08-05 13:41:05 +02:00
vterm_stage3_acceptance.rs fix(test): the GPU terminal suites measure geometry the flip changed 2026-08-04 18:00:58 +02:00
worker_shutdown_acceptance.rs test(isolation): migrate the corpus off the ambient roots 2026-07-31 18:48:45 -04:00