Continue Blender Web parity task handoff

tools/web/check-action-armature-collection-remove-desktop.py

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+#!/usr/bin/env python3
+import hashlib
+import json
+import os
+import pathlib
+import shutil
+import sys
+import tempfile
+
+import bpy
+
+
+ARMATURE_NAME = "WebGapArmatureCollectionRemoveArmature"
+OBJECT_NAME = "WebGapArmatureCollectionRemoveObject"
+FIRST_COLLECTION = "WebGapArmatureCollectionRemoveFirst"
+REMOVED_COLLECTION = "WebGapArmatureCollectionRemoveRemoved"
+LAST_COLLECTION = "WebGapArmatureCollectionRemoveLast"
+FIRST_BONE = "WebGapArmatureCollectionRemoveFirstBone"
+REMOVED_BONE = "WebGapArmatureCollectionRemoveRemovedBone"
+LAST_BONE = "WebGapArmatureCollectionRemoveLastBone"
+
+
+def state_report():
+    armature = bpy.data.armatures.get(ARMATURE_NAME)
+    obj = bpy.data.objects.get(OBJECT_NAME)
+    if armature is None or obj is None or obj.type != "ARMATURE" or obj.data != armature:
+        raise RuntimeError("armature.collection_remove fixture is missing")
+    collections = []
+    for index, collection in enumerate(armature.collections):
+        collections.append({
+            "name": collection.name,
+            "index": index,
+            "bones": sorted(bone.name for bone in collection.bones),
+        })
+    return {
+        "object": OBJECT_NAME,
+        "armature": ARMATURE_NAME,
+        "activeIndex": armature.collections.active_index,
+        "bones": sorted(bone.name for bone in armature.bones),
+        "collections": collections,
+    }
+
+
+def run_operator(already_removed):
+    obj = bpy.data.objects[OBJECT_NAME]
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    poll = bool(bpy.ops.armature.collection_remove.poll())
+    if not poll:
+        raise RuntimeError("ARMATURE_OT_collection_remove poll failed")
+    if not already_removed:
+        result = bpy.ops.armature.collection_remove()
+        if result != {"FINISHED"}:
+            raise RuntimeError(f"ARMATURE_OT_collection_remove returned {result}")
+    return poll, not already_removed
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 2:
+        raise SystemExit("usage: blender -b --factory-startup --python check-action-armature-collection-remove-desktop.py -- FIXTURE REPORT")
+    fixture, output = (pathlib.Path(value).resolve() for value in arguments)
+    bpy.ops.wm.open_mainfile(filepath=str(fixture), load_ui=False)
+    before = state_report()
+    before_names = [collection["name"] for collection in before["collections"]]
+    if before_names == [FIRST_COLLECTION, LAST_COLLECTION] and before["activeIndex"] == 1:
+        already_removed = True
+    elif before_names == [FIRST_COLLECTION, REMOVED_COLLECTION, LAST_COLLECTION] and before["activeIndex"] == 1:
+        already_removed = False
+    else:
+        raise RuntimeError(f"unexpected collection_remove input: {before}")
+    poll, changed = run_operator(already_removed)
+    after = state_report()
+    if [collection["name"] for collection in after["collections"]] != [FIRST_COLLECTION, LAST_COLLECTION]:
+        raise RuntimeError(f"collection_remove produced unexpected collections: {after}")
+    if after["activeIndex"] != 1 or after["bones"] != sorted([FIRST_BONE, REMOVED_BONE, LAST_BONE]):
+        raise RuntimeError(f"collection_remove changed active index or armature bones: {after}")
+    expected_members = {FIRST_COLLECTION: [FIRST_BONE], LAST_COLLECTION: [LAST_BONE]}
+    actual_members = {collection["name"]: collection["bones"] for collection in after["collections"]}
+    if actual_members != expected_members:
+        raise RuntimeError(f"collection_remove retained removed collection membership: {after}")
+
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-armature-collection-remove-reopen-", suffix=".blend")
+    os.close(descriptor)
+    temporary_path = pathlib.Path(temporary)
+    try:
+        bpy.ops.wm.save_as_mainfile(filepath=str(temporary_path), check_existing=False, compress=True)
+        bpy.ops.wm.open_mainfile(filepath=str(temporary_path), load_ui=False)
+        reopened = state_report()
+        if reopened != after:
+            raise RuntimeError(f"armature.collection_remove save/reopen drift: {after} != {reopened}")
+        shutil.copyfile(temporary_path, fixture)
+        report = {
+            "schemaVersion": 1,
+            "task": "M16-GAP-00226",
+            "operation": "ARMATURE_COLLECTION_REMOVE_DESKTOP",
+            "fixture": str(fixture),
+            "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+            "before": before,
+            "after": reopened,
+            "alreadyRemoved": already_removed,
+            "poll": poll,
+            "operatorStatus": "FINISHED" if changed else "SKIPPED_ALREADY_APPLIED",
+            "mainMutation": "ACTIVE_COLLECTION_REMOVED" if changed else "ACTIVE_COLLECTION_ALREADY_REMOVED",
+            "saveReopen": "EXACT",
+            "blenderVersion": bpy.app.version_string,
+        }
+        output.parent.mkdir(parents=True, exist_ok=True)
+        output.write_text(json.dumps(report, indent=2, sort_keys=True) + "\n", encoding="utf-8")
+        print("armature-collection-remove-desktop-ok poll=true removed=active saveReopen=exact")
+    finally:
+        temporary_path.unlink(missing_ok=True)
+
+
+if __name__ == "__main__":
+    try:
+        main()
+    except Exception as error:
+        print(f"armature-collection-remove-desktop-failed: {error}")
+        raise SystemExit(1)