Continue Blender Web parity task handoff

tools/web/check-action-armature-duplicate-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 = "WebGapArmatureDuplicateArmature"
+OBJECT_NAME = "WebGapArmatureDuplicateObject"
+SOURCE_BONE = "WebGapArmatureDuplicateSource"
+OTHER_BONE = "WebGapArmatureDuplicateOther"
+DUPLICATE_BONE = "WebGapArmatureDuplicateSource.001"
+EXPECTED_AFTER = [SOURCE_BONE, OTHER_BONE, DUPLICATE_BONE]
+
+
+def ensure_edit_mode():
+    obj = bpy.data.objects.get(OBJECT_NAME)
+    armature = bpy.data.armatures.get(ARMATURE_NAME)
+    if armature is None or obj is None or obj.type != "ARMATURE" or obj.data != armature:
+        raise RuntimeError("armature.duplicate fixture is missing")
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    if obj.mode != "EDIT":
+        bpy.ops.object.mode_set(mode="EDIT")
+    return armature
+
+
+def bone_report(bone):
+    return {
+        "name": bone.name,
+        "selected": bool(bone.select),
+        "selectHead": bool(bone.select_head),
+        "selectTail": bool(bone.select_tail),
+        "parent": bone.parent.name if bone.parent else None,
+        "connected": bool(bone.use_connect),
+        "head": [round(value, 6) for value in bone.head],
+        "tail": [round(value, 6) for value in bone.tail],
+    }
+
+
+def state_report():
+    armature = ensure_edit_mode()
+    return {
+        "object": OBJECT_NAME,
+        "armature": ARMATURE_NAME,
+        "activeBone": armature.edit_bones.active.name if armature.edit_bones.active else None,
+        "bones": [bone_report(bone) for bone in armature.edit_bones],
+    }
+
+
+def validate_input(before):
+    names = [bone["name"] for bone in before["bones"]]
+    if names == [SOURCE_BONE, OTHER_BONE]:
+        source, other = before["bones"]
+        if before["activeBone"] != SOURCE_BONE:
+            raise RuntimeError(f"unexpected armature.duplicate active bone: {before}")
+        if not source["selected"] or not source["selectHead"] or not source["selectTail"]:
+            raise RuntimeError(f"unexpected armature.duplicate source selection: {before}")
+        if other["selected"] or other["selectHead"] or other["selectTail"]:
+            raise RuntimeError(f"unexpected armature.duplicate other selection: {before}")
+        return False
+    if names == EXPECTED_AFTER:
+        if before["activeBone"] != DUPLICATE_BONE:
+            raise RuntimeError(f"unexpected armature.duplicate completed active bone: {before}")
+        selected = [bone["name"] for bone in before["bones"] if bone["selected"]]
+        if selected != [DUPLICATE_BONE]:
+            raise RuntimeError(f"unexpected armature.duplicate completed selection: {before}")
+        return True
+    raise RuntimeError(f"unexpected armature.duplicate bones: {before}")
+
+
+def run_operator(already_duplicated):
+    ensure_edit_mode()
+    poll = bool(bpy.ops.armature.duplicate.poll())
+    if not already_duplicated:
+        if not poll:
+            raise RuntimeError("ARMATURE_OT_duplicate poll failed")
+        result = bpy.ops.armature.duplicate()
+        if result != {"FINISHED"}:
+            raise RuntimeError(f"ARMATURE_OT_duplicate returned {result}")
+    return poll, not already_duplicated
+
+
+def validate_after(after):
+    if [bone["name"] for bone in after["bones"]] != EXPECTED_AFTER:
+        raise RuntimeError(f"armature.duplicate did not create the expected copy: {after}")
+    source, other, duplicate = after["bones"]
+    if after["activeBone"] != DUPLICATE_BONE:
+        raise RuntimeError(f"armature.duplicate active bone drift: {after}")
+    if source["selected"] or other["selected"] or not duplicate["selected"]:
+        raise RuntimeError(f"armature.duplicate selection drift: {after}")
+    if duplicate["parent"] is not None or duplicate["connected"]:
+        raise RuntimeError(f"armature.duplicate changed duplicate parent state: {after}")
+    if source["head"] != duplicate["head"] or source["tail"] != duplicate["tail"]:
+        raise RuntimeError(f"armature.duplicate geometry mismatch: {after}")
+    if other["head"] != [2.0, 0.0, 0.0] or other["tail"] != [2.0, 1.0, 0.0]:
+        raise RuntimeError(f"armature.duplicate changed independent bone: {after}")
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 2:
+        raise SystemExit(
+            "usage: blender -b --factory-startup --python check-action-armature-duplicate-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()
+    already_duplicated = validate_input(before)
+    poll, changed = run_operator(already_duplicated)
+    after = state_report()
+    validate_after(after)
+
+    bpy.ops.object.mode_set(mode="OBJECT")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-armature-duplicate-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.duplicate save/reopen drift: {after} != {reopened}")
+        shutil.copyfile(temporary_path, fixture)
+        report = {
+            "schemaVersion": 1,
+            "task": "M16-GAP-00236",
+            "operation": "ARMATURE_DUPLICATE_DESKTOP",
+            "fixture": str(fixture),
+            "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+            "before": before,
+            "after": reopened,
+            "sourceBone": SOURCE_BONE,
+            "duplicateBone": DUPLICATE_BONE,
+            "poll": poll,
+            "operatorStatus": "FINISHED" if changed else "SKIPPED_ALREADY_APPLIED",
+            "mainMutation": "SELECTED_BONE_DUPLICATED" if changed else "SELECTED_BONE_ALREADY_DUPLICATED",
+            "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(f"armature-duplicate-desktop-ok duplicate={DUPLICATE_BONE} saveReopen=exact")
+    finally:
+        temporary_path.unlink(missing_ok=True)
+
+
+if __name__ == "__main__":
+    try:
+        main()
+    except Exception as error:
+        print(f"armature-duplicate-desktop-failed: {error}")
+        raise SystemExit(1)