mirror of
https://github.com/maziggy/bambuddy.git
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AneoPsy
e21283de1c
- Valid filament extraction (single/multiple) - Plate-specific filtering - Error handling (invalid file, missing slice_info) - Missing/invalid field handling
411 lines
13 KiB
Python
411 lines
13 KiB
Python
"""Unit tests for 3MF parsing utilities (threemf_tools.py).
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Tests G-code parsing, filament length-to-weight conversion,
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and cumulative layer usage lookup.
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"""
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import io
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import math
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import zipfile
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from backend.app.utils.threemf_tools import (
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extract_filament_usage_from_3mf,
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get_cumulative_usage_at_layer,
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mm_to_grams,
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parse_gcode_layer_filament_usage,
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)
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def create_mock_3mf(slice_info_content: str) -> io.BytesIO:
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"""Create a mock 3MF file (ZIP) with slice_info.config content."""
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buffer = io.BytesIO()
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with zipfile.ZipFile(buffer, "w") as zf:
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zf.writestr("Metadata/slice_info.config", slice_info_content)
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buffer.seek(0)
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return buffer
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class TestParseGcodeLayerFilamentUsage:
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"""Tests for parse_gcode_layer_filament_usage()."""
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def test_single_filament_single_layer(self):
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"""Single filament extruding on one layer."""
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gcode = """
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M620 S0
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G1 X10 Y10 E5.0
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G1 X20 Y20 E3.0
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"""
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result = parse_gcode_layer_filament_usage(gcode)
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assert result == {0: {0: 8.0}}
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def test_multi_layer_single_filament(self):
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"""Single filament across multiple layers."""
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gcode = """
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M620 S0
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G1 X10 Y10 E10.0
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M73 L1
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G1 X20 Y20 E5.0
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M73 L2
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G1 X30 Y30 E7.0
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"""
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result = parse_gcode_layer_filament_usage(gcode)
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assert result[0] == {0: 10.0}
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assert result[1] == {0: 15.0}
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assert result[2] == {0: 22.0}
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def test_multi_material(self):
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"""Multiple filaments switching via M620."""
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gcode = """
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M620 S0
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G1 E10.0
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M73 L1
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M620 S1
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G1 E5.0
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M620 S0
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G1 E3.0
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M73 L2
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G1 E2.0
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"""
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result = parse_gcode_layer_filament_usage(gcode)
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# Layer 0: filament 0 = 10mm
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assert result[0] == {0: 10.0}
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# Layer 1: filament 0 = 13mm (10+3), filament 1 = 5mm
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assert result[1] == {0: 13.0, 1: 5.0}
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# Layer 2: filament 0 = 15mm (13+2)
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assert result[2] == {0: 15.0, 1: 5.0}
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def test_retractions_ignored(self):
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"""Negative E values (retractions) should be ignored."""
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gcode = """
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M620 S0
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G1 E10.0
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G1 E-2.0
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G1 E5.0
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"""
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result = parse_gcode_layer_filament_usage(gcode)
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assert result == {0: {0: 15.0}}
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def test_m620_s255_unloads(self):
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"""M620 S255 means unload - extrusion after should be ignored."""
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gcode = """
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M620 S0
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G1 E10.0
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M620 S255
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G1 E5.0
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"""
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result = parse_gcode_layer_filament_usage(gcode)
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assert result == {0: {0: 10.0}}
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def test_m620_with_suffix(self):
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"""M620 S0A format (filament ID with suffix letter)."""
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gcode = """
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M620 S0A
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G1 E10.0
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M620 S1A
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G1 E5.0
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"""
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result = parse_gcode_layer_filament_usage(gcode)
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assert result == {0: {0: 10.0, 1: 5.0}}
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def test_comments_ignored(self):
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"""Comment lines and inline comments are ignored."""
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gcode = """
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; This is a comment
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M620 S0
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G1 X10 E5.0 ; inline comment with E value
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G1 E3.0
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"""
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result = parse_gcode_layer_filament_usage(gcode)
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assert result == {0: {0: 8.0}}
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def test_empty_gcode(self):
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"""Empty G-code returns empty dict."""
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assert parse_gcode_layer_filament_usage("") == {}
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assert parse_gcode_layer_filament_usage("\n\n\n") == {}
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def test_no_extrusion(self):
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"""G-code with moves but no extrusion."""
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gcode = """
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G1 X10 Y10
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G1 X20 Y20
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"""
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assert parse_gcode_layer_filament_usage(gcode) == {}
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def test_no_active_filament_extrusion_ignored(self):
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"""Extrusion before any M620 is ignored (no active filament)."""
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gcode = """
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G1 E10.0
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M620 S0
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G1 E5.0
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"""
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result = parse_gcode_layer_filament_usage(gcode)
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assert result == {0: {0: 5.0}}
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def test_g0_g2_g3_extrusion(self):
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"""G0, G2, G3 with E parameter are also tracked."""
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gcode = """
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M620 S0
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G0 E1.0
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G1 E2.0
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G2 E3.0
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G3 E4.0
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"""
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result = parse_gcode_layer_filament_usage(gcode)
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assert result == {0: {0: 10.0}}
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def test_cumulative_across_layers(self):
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"""Values are cumulative, not per-layer."""
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gcode = """
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M620 S0
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G1 E100.0
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M73 L1
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G1 E100.0
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M73 L2
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G1 E100.0
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"""
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result = parse_gcode_layer_filament_usage(gcode)
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assert result[0] == {0: 100.0}
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assert result[1] == {0: 200.0}
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assert result[2] == {0: 300.0}
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class TestMmToGrams:
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"""Tests for mm_to_grams()."""
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def test_default_pla_175(self):
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"""Default PLA 1.75mm conversion."""
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# 1000mm of 1.75mm PLA at 1.24 g/cm³
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# Volume = π × (0.0875cm)² × 100cm = 2.405cm³
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# Weight = 2.405 × 1.24 = 2.982g
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result = mm_to_grams(1000.0)
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expected = math.pi * (0.0875**2) * 100 * 1.24
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assert abs(result - expected) < 0.001
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def test_zero_length(self):
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"""Zero length returns zero weight."""
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assert mm_to_grams(0.0) == 0.0
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def test_custom_diameter(self):
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"""Custom diameter (2.85mm) changes result."""
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result_175 = mm_to_grams(1000.0, diameter_mm=1.75)
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result_285 = mm_to_grams(1000.0, diameter_mm=2.85)
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# 2.85mm filament has more volume per mm
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assert result_285 > result_175
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ratio = (2.85 / 1.75) ** 2 # Volume scales with diameter²
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assert abs(result_285 / result_175 - ratio) < 0.001
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def test_custom_density(self):
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"""Different density (ABS vs PLA)."""
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pla = mm_to_grams(1000.0, density_g_cm3=1.24)
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abs_ = mm_to_grams(1000.0, density_g_cm3=1.04)
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assert pla > abs_
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assert abs(pla / abs_ - 1.24 / 1.04) < 0.001
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def test_known_value(self):
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"""Verify against a known calculation.
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1m (1000mm) of 1.75mm PLA at 1.24 g/cm³:
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r = 0.0875 cm, L = 100 cm
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V = π × 0.0875² × 100 = 2.4053 cm³
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m = 2.4053 × 1.24 = 2.9826 g
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"""
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result = mm_to_grams(1000.0, 1.75, 1.24)
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assert abs(result - 2.9826) < 0.01
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class TestGetCumulativeUsageAtLayer:
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"""Tests for get_cumulative_usage_at_layer()."""
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def test_exact_layer_match(self):
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"""Target layer exists exactly in the data."""
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data = {0: {0: 100.0}, 5: {0: 500.0}, 10: {0: 1000.0}}
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assert get_cumulative_usage_at_layer(data, 5) == {0: 500.0}
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def test_between_layers(self):
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"""Target is between recorded layers - uses the closest lower one."""
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data = {0: {0: 100.0}, 5: {0: 500.0}, 10: {0: 1000.0}}
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# Layer 7 is between 5 and 10, should return layer 5's data
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assert get_cumulative_usage_at_layer(data, 7) == {0: 500.0}
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def test_beyond_last_layer(self):
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"""Target is beyond the last recorded layer."""
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data = {0: {0: 100.0}, 5: {0: 500.0}}
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assert get_cumulative_usage_at_layer(data, 100) == {0: 500.0}
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def test_before_first_layer(self):
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"""Target is before any recorded data."""
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data = {5: {0: 500.0}, 10: {0: 1000.0}}
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assert get_cumulative_usage_at_layer(data, 3) == {}
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def test_empty_data(self):
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"""Empty layer_usage returns empty dict."""
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assert get_cumulative_usage_at_layer({}, 5) == {}
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def test_none_data(self):
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"""None layer_usage returns empty dict."""
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assert get_cumulative_usage_at_layer(None, 5) == {}
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def test_multi_filament(self):
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"""Multi-filament data at target layer."""
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data = {
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0: {0: 50.0},
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5: {0: 200.0, 1: 100.0},
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10: {0: 400.0, 1: 250.0, 2: 50.0},
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}
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result = get_cumulative_usage_at_layer(data, 8)
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assert result == {0: 200.0, 1: 100.0}
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def test_layer_zero(self):
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"""Target layer 0."""
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data = {0: {0: 10.0}, 1: {0: 20.0}}
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assert get_cumulative_usage_at_layer(data, 0) == {0: 10.0}
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class TestExtractFilamentUsageFrom3mf:
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"""Tests for extract_filament_usage_from_3mf function."""
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def test_extract_single_filament(self, tmp_path):
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"""Test extracting a single filament."""
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xml_content = """<?xml version="1.0" encoding="UTF-8"?>
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<config>
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<filament id="1" used_g="50.5" type="PLA" color="#FF0000"/>
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</config>
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"""
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mock_3mf = create_mock_3mf(xml_content)
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file_path = tmp_path / "test.3mf"
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file_path.write_bytes(mock_3mf.read())
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result = extract_filament_usage_from_3mf(file_path)
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assert len(result) == 1
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assert result[0]["slot_id"] == 1
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assert result[0]["used_g"] == 50.5
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assert result[0]["type"] == "PLA"
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assert result[0]["color"] == "#FF0000"
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def test_extract_multiple_filaments(self, tmp_path):
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"""Test extracting multiple filaments."""
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xml_content = """<?xml version="1.0" encoding="UTF-8"?>
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<config>
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<filament id="1" used_g="50.5" type="PLA" color="#FF0000"/>
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<filament id="2" used_g="30.2" type="PETG" color="#00FF00"/>
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<filament id="3" used_g="10.0" type="ABS" color="#0000FF"/>
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</config>
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"""
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mock_3mf = create_mock_3mf(xml_content)
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file_path = tmp_path / "test.3mf"
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file_path.write_bytes(mock_3mf.read())
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result = extract_filament_usage_from_3mf(file_path)
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assert len(result) == 3
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assert result[0]["slot_id"] == 1
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assert result[1]["slot_id"] == 2
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assert result[2]["slot_id"] == 3
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def test_extract_filament_with_plate_id(self, tmp_path):
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"""Test extracting filament for a specific plate."""
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xml_content = """<?xml version="1.0" encoding="UTF-8"?>
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<config>
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<plate>
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<metadata key="index" value="1"/>
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<filament id="1" used_g="25.0" type="PLA" color="#FF0000"/>
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</plate>
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<plate>
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<metadata key="index" value="2"/>
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<filament id="1" used_g="75.0" type="PETG" color="#00FF00"/>
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</plate>
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</config>
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"""
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mock_3mf = create_mock_3mf(xml_content)
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file_path = tmp_path / "test.3mf"
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file_path.write_bytes(mock_3mf.read())
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result = extract_filament_usage_from_3mf(file_path, plate_id=2)
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assert len(result) == 1
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assert result[0]["used_g"] == 75.0
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assert result[0]["type"] == "PETG"
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def test_missing_slice_info_returns_empty(self, tmp_path):
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"""Test that missing slice_info.config returns empty list."""
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buffer = io.BytesIO()
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with zipfile.ZipFile(buffer, "w") as zf:
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zf.writestr("other_file.txt", "content")
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buffer.seek(0)
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file_path = tmp_path / "test.3mf"
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file_path.write_bytes(buffer.read())
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result = extract_filament_usage_from_3mf(file_path)
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assert result == []
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def test_invalid_file_returns_empty(self, tmp_path):
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"""Test that invalid file returns empty list."""
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file_path = tmp_path / "invalid.3mf"
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file_path.write_text("not a zip file")
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result = extract_filament_usage_from_3mf(file_path)
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assert result == []
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def test_nonexistent_file_returns_empty(self, tmp_path):
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"""Test that nonexistent file returns empty list."""
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file_path = tmp_path / "nonexistent.3mf"
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result = extract_filament_usage_from_3mf(file_path)
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assert result == []
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def test_filament_without_id_is_skipped(self, tmp_path):
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"""Test that filament without id is skipped."""
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xml_content = """<?xml version="1.0" encoding="UTF-8"?>
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<config>
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<filament used_g="50.5" type="PLA" color="#FF0000"/>
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<filament id="2" used_g="30.0" type="PETG" color="#00FF00"/>
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</config>
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"""
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mock_3mf = create_mock_3mf(xml_content)
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file_path = tmp_path / "test.3mf"
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file_path.write_bytes(mock_3mf.read())
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result = extract_filament_usage_from_3mf(file_path)
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assert len(result) == 1
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assert result[0]["slot_id"] == 2
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def test_invalid_used_g_is_skipped(self, tmp_path):
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"""Test that filament with invalid used_g is skipped."""
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xml_content = """<?xml version="1.0" encoding="UTF-8"?>
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<config>
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<filament id="1" used_g="invalid" type="PLA" color="#FF0000"/>
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<filament id="2" used_g="30.0" type="PETG" color="#00FF00"/>
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</config>
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"""
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mock_3mf = create_mock_3mf(xml_content)
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file_path = tmp_path / "test.3mf"
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file_path.write_bytes(mock_3mf.read())
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result = extract_filament_usage_from_3mf(file_path)
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assert len(result) == 1
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assert result[0]["slot_id"] == 2
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def test_missing_optional_fields(self, tmp_path):
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"""Test that missing type and color default to empty string."""
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xml_content = """<?xml version="1.0" encoding="UTF-8"?>
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<config>
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<filament id="1" used_g="50.5"/>
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</config>
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"""
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mock_3mf = create_mock_3mf(xml_content)
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file_path = tmp_path / "test.3mf"
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file_path.write_bytes(mock_3mf.read())
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result = extract_filament_usage_from_3mf(file_path)
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assert len(result) == 1
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assert result[0]["type"] == ""
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assert result[0]["color"] == ""
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