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The archive card, the library file details and the slice dialog all read the layer height from a 3MF's project_settings.config. That records the project's settings and can still describe an earlier process or another plate; the plate's own G-code - what the printer executes - was never consulted for it, because the parser read the first 4KB, enough for the layer count in the header block but not for the config block that carries layer_height 14-25KB in. A print running at 0.08 on the H2C archived as 0.2 with the layer count from the same file correct beside it. The plate G-code now wins wherever the two disagree, and the plate that was printed is the one read - the header parse used to take the first gcode entry in the zip regardless of which plate the archive was for. Source 3MFs, which carry no G-code, keep the project value as before. --- Stop carrying a file's layer height over the preset you picked Bambuddy carries a designer's process deviations across a re-slice (#2622) and pre-ticked every one that was not machine-coupled. layer_height is one MakerWorld projects routinely carry, so picking "0.08mm High Quality" for a file whose designer had moved layer height to 0.2 sliced at 0.2 while the dropdown still read 0.08 - the same 0.2 the settings panel showed, tagged "from file". Layer height and first layer height are now classified preset_defining and treated like the machine-coupled keys: offered, never pre-selected. The flag travels on DesignOverride so the modal and the backend agree, and the panel's badge names the conflict and shows the preset's own value next to the file's, so ticking one is a deliberate choice.
230 lines
9.2 KiB
Python
230 lines
9.2 KiB
Python
"""Tests for carrying a 3MF designer's process tweaks across a re-slice (#2622).
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The layout asserted here — ``different_settings_to_system`` being
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``[process, *filaments, printer]`` — was verified against real BambuStudio files
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at 2, 3 and 4 filament slots before this was written. Getting the index wrong
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would carry ``machine_start_gcode`` from the designer's printer onto the user's,
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so the parser refuses any file whose array length disagrees with its own filament
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count rather than guessing.
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"""
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import io
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import json
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import zipfile
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from backend.app.services.design_settings import (
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DesignOverride,
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apply_design_overrides,
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extract_design_process_overrides,
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is_preset_defining,
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is_printer_coupled,
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overrides_from_config,
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)
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def _config(**overrides) -> dict:
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"""A minimal project_settings.config with two filament slots."""
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base = {
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"print_settings_id": "0.20mm Standard @BBL A1",
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"printer_settings_id": "Bambu Lab A1 0.4 nozzle",
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"filament_settings_id": ["Bambu PLA Basic @BBL A1", "Bambu PLA Matte @BBL A1"],
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"wall_loops": "5",
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"sparse_infill_density": "100%",
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"initial_layer_print_height": "0.1",
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"outer_wall_speed": "200",
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"machine_start_gcode": "G28 ; designer printer",
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"different_settings_to_system": [
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"wall_loops;sparse_infill_density;initial_layer_print_height;outer_wall_speed",
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"",
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"",
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"machine_start_gcode",
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],
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}
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base.update(overrides)
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return base
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def _3mf(config: dict | None, *, include_config: bool = True) -> bytes:
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buffer = io.BytesIO()
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with zipfile.ZipFile(buffer, "w") as zf:
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zf.writestr("3D/3dmodel.model", "<model/>")
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if include_config:
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zf.writestr("Metadata/project_settings.config", json.dumps(config))
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return buffer.getvalue()
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class TestClassification:
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def test_geometry_and_quality_keys_are_portable(self):
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for key in (
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"wall_loops",
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"sparse_infill_density",
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"sparse_infill_pattern",
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"initial_layer_print_height",
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"layer_height",
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"enable_support",
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"brim_type",
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"seam_position",
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"ironing_type",
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):
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assert is_printer_coupled(key) is False, key
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def test_kinematic_and_thermal_keys_are_printer_coupled(self):
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for key in (
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"outer_wall_speed",
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"inner_wall_speed",
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"internal_solid_infill_speed",
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"travel_acceleration",
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"default_acceleration",
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"default_jerk",
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"overhang_fan_speed",
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"nozzle_temperature",
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"prime_tower_max_speed",
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"prime_tower_width",
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"prime_tower_rib_wall",
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"prime_tower_infill_gap",
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"enable_prime_tower",
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"independent_support_layer_height",
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"precise_z_height",
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):
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assert is_printer_coupled(key) is True, key
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class TestPresetDefining:
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"""Keys that *are* the picked preset must never be carried without asking.
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"0.08mm High Quality" is its layer height; carrying a file's 0.2 onto it
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produced a 0.2 slice while the modal's dropdown still read 0.08 — the
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report this class exists for.
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"""
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def test_layer_heights_define_the_preset(self):
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assert is_preset_defining("layer_height") is True
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assert is_preset_defining("initial_layer_print_height") is True
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def test_ordinary_design_tweaks_do_not(self):
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for key in ("wall_loops", "sparse_infill_density", "brim_type", "outer_wall_speed"):
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assert is_preset_defining(key) is False, key
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def test_extraction_marks_them(self):
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config = _config(
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layer_height="0.2",
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different_settings_to_system=["wall_loops;layer_height", "", "", ""],
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)
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by_key = {o.key: o for o in overrides_from_config(config)}
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assert by_key["layer_height"].preset_defining is True
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assert by_key["layer_height"].printer_coupled is False
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assert by_key["wall_loops"].preset_defining is False
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def test_they_still_apply_when_explicitly_selected(self):
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# Offered, not withheld: a re-slice that genuinely wants the design's
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# layer height gets it by ticking the box.
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overrides = [DesignOverride("layer_height", "0.2", False, True)]
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result = apply_design_overrides('{"inherits": "0.08mm High Quality @BBL H2C"}', overrides, ["layer_height"])
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assert json.loads(result)["layer_height"] == "0.2"
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class TestExtraction:
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def test_reads_the_process_slot_and_classifies_each_key(self):
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overrides = extract_design_process_overrides(_3mf(_config()))
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assert [o.key for o in overrides] == [
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"initial_layer_print_height",
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"outer_wall_speed",
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"sparse_infill_density",
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"wall_loops",
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]
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by_key = {o.key: o for o in overrides}
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assert by_key["wall_loops"].value == "5"
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assert by_key["sparse_infill_density"].value == "100%"
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assert by_key["wall_loops"].printer_coupled is False
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assert by_key["outer_wall_speed"].printer_coupled is True
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def test_never_surfaces_the_printer_slot(self):
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# machine_start_gcode is listed in the printer entry, not the process
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# one. Carrying it would push the designer's start G-code onto another
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# machine — the exact failure the length check exists to prevent.
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overrides = extract_design_process_overrides(_3mf(_config()))
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assert "machine_start_gcode" not in {o.key for o in overrides}
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def test_rejects_an_array_whose_length_contradicts_the_filament_count(self):
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# Three entries for two filaments: the layout is not the one we know,
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# so index 0 might not be the process slot. Refuse rather than guess.
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cfg = _config(different_settings_to_system=["wall_loops", "", ""])
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assert extract_design_process_overrides(_3mf(cfg)) == []
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def test_skips_keys_absent_from_the_flattened_config(self):
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cfg = _config(different_settings_to_system=["wall_loops;renamed_in_a_later_slicer", "", "", ""])
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assert [o.key for o in extract_design_process_overrides(_3mf(cfg))] == ["wall_loops"]
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def test_empty_process_entry_yields_nothing(self):
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cfg = _config(different_settings_to_system=["", "", "", "machine_start_gcode"])
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assert extract_design_process_overrides(_3mf(cfg)) == []
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def test_files_without_the_field_yield_nothing(self):
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cfg = _config()
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del cfg["different_settings_to_system"]
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assert extract_design_process_overrides(_3mf(cfg)) == []
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def test_files_without_project_settings_yield_nothing(self):
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assert extract_design_process_overrides(_3mf(None, include_config=False)) == []
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def test_malformed_input_yields_nothing(self):
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assert extract_design_process_overrides(b"not a zip") == []
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assert overrides_from_config("not a dict") == []
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assert overrides_from_config({"different_settings_to_system": "not a list"}) == []
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def test_tolerates_a_missing_filament_list(self):
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# No filament_settings_id to cross-check against — index 0 is still the
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# documented process slot, so parse it rather than bailing out.
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cfg = _config()
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del cfg["filament_settings_id"]
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assert [o.key for o in extract_design_process_overrides(_3mf(cfg))] == [
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"initial_layer_print_height",
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"outer_wall_speed",
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"sparse_infill_density",
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"wall_loops",
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]
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class TestApply:
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def _overrides(self) -> list[DesignOverride]:
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return extract_design_process_overrides(_3mf(_config()))
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def test_writes_only_the_selected_keys(self):
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process = json.dumps({"inherits": "0.20mm Standard @BBL X1C", "from": "system", "wall_loops": "2"})
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patched = json.loads(apply_design_overrides(process, self._overrides(), ["wall_loops"]))
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assert patched["wall_loops"] == "5"
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# Not selected — the picked preset's own value must survive.
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assert "sparse_infill_density" not in patched
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assert "outer_wall_speed" not in patched
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# The inherits stub is what makes the patch win over the flattened
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# parent inside the sidecar; it must not be disturbed.
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assert patched["inherits"] == "0.20mm Standard @BBL X1C"
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assert patched["from"] == "system"
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def test_a_key_the_source_never_flagged_is_ignored(self):
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process = json.dumps({"inherits": "x"})
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patched = json.loads(apply_design_overrides(process, self._overrides(), ["layer_height"]))
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assert "layer_height" not in patched
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def test_printer_coupled_keys_apply_when_explicitly_selected(self):
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process = json.dumps({"inherits": "x"})
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patched = json.loads(apply_design_overrides(process, self._overrides(), ["outer_wall_speed"]))
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assert patched["outer_wall_speed"] == "200"
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def test_no_selection_is_a_no_op(self):
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process = json.dumps({"inherits": "x"})
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assert apply_design_overrides(process, self._overrides(), []) == process
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def test_unparseable_process_json_is_returned_untouched(self):
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assert apply_design_overrides("{not json", self._overrides(), ["wall_loops"]) == "{not json"
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