Continue Blender Web parity task handoff

tools/web/check-action-armature-delete-desktop.py

@@ -0,0 +1,130 @@
+#!/usr/bin/env python3
+import hashlib
+import json
+import os
+import pathlib
+import shutil
+import sys
+import tempfile
+
+import bpy
+
+
+ARMATURE_NAME = "WebGapArmatureDeleteArmature"
+OBJECT_NAME = "WebGapArmatureDeleteObject"
+KEEP_BONE = "WebGapArmatureDeleteKeep"
+DELETE_BONE = "WebGapArmatureDeleteSelected"
+RETAIN_BONE = "WebGapArmatureDeleteRetain"
+EXPECTED_AFTER = [KEEP_BONE, RETAIN_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.delete 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 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": [
+            {
+                "name": bone.name,
+                "selected": bool(bone.select),
+                "parent": bone.parent.name if bone.parent else None,
+            }
+            for bone in armature.edit_bones
+        ],
+    }
+
+
+def run_operator(already_deleted):
+    ensure_edit_mode()
+    poll = bool(bpy.ops.armature.delete.poll())
+    if not already_deleted:
+        if not poll:
+            raise RuntimeError("ARMATURE_OT_delete poll failed")
+        result = bpy.ops.armature.delete()
+        if result != {"FINISHED"}:
+            raise RuntimeError(f"ARMATURE_OT_delete returned {result}")
+    return poll, not already_deleted
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 2:
+        raise SystemExit(
+            "usage: blender -b --factory-startup --python check-action-armature-delete-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 = [bone["name"] for bone in before["bones"]]
+    if before_names == [KEEP_BONE, DELETE_BONE, RETAIN_BONE]:
+        if before["activeBone"] != DELETE_BONE or [bone["name"] for bone in before["bones"] if bone["selected"]] != [DELETE_BONE]:
+            raise RuntimeError(f"unexpected armature.delete input: {before}")
+        already_deleted = False
+    elif before_names == EXPECTED_AFTER:
+        if before["activeBone"] is not None or any(bone["selected"] for bone in before["bones"]):
+            raise RuntimeError(f"unexpected armature.delete completed state: {before}")
+        already_deleted = True
+    else:
+        raise RuntimeError(f"unexpected armature.delete bones: {before}")
+
+    poll, changed = run_operator(already_deleted)
+    after = state_report()
+    if [bone["name"] for bone in after["bones"]] != EXPECTED_AFTER:
+        raise RuntimeError(f"armature.delete did not remove the selected bone: {after}")
+    if after["activeBone"] is not None or any(bone["selected"] for bone in after["bones"]):
+        raise RuntimeError(f"armature.delete left selection or active bone behind: {after}")
+    if any(bone["parent"] is not None for bone in after["bones"]):
+        raise RuntimeError(f"armature.delete changed unexpected parent state: {after}")
+
+    bpy.ops.object.mode_set(mode="OBJECT")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-armature-delete-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.delete save/reopen drift: {after} != {reopened}")
+        shutil.copyfile(temporary_path, fixture)
+        report = {
+            "schemaVersion": 1,
+            "task": "M16-GAP-00234",
+            "operation": "ARMATURE_DELETE_DESKTOP",
+            "fixture": str(fixture),
+            "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+            "before": before,
+            "after": reopened,
+            "deletedBone": DELETE_BONE,
+            "poll": poll,
+            "operatorStatus": "FINISHED" if changed else "SKIPPED_ALREADY_APPLIED",
+            "mainMutation": "SELECTED_BONE_DELETED" if changed else "SELECTED_BONE_ALREADY_DELETED",
+            "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-delete-desktop-ok deleted={DELETE_BONE} saveReopen=exact")
+    finally:
+        temporary_path.unlink(missing_ok=True)
+
+
+if __name__ == "__main__":
+    try:
+        main()
+    except Exception as error:
+        print(f"armature-delete-desktop-failed: {error}")
+        raise SystemExit(1)