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153
comfy_extras/nodes_math.py Normal file
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from typing_extensions import override
from comfy_api.latest import ComfyExtension, io
class Add(io.ComfyNode):
@classmethod
def define_schema(cls):
template = io.MatchType.Template("add")
autogrow_template = io.Autogrow.TemplatePrefix(
io.MatchType.Input("operand", template=template),
prefix="operand",
min=2,
max=10
)
return io.Schema(
node_id="Add",
display_name="Add",
category="math",
inputs=[
io.Autogrow.Input("operands", template=autogrow_template)
],
outputs=[
io.MatchType.Output(template=template)
],
)
@classmethod
def execute(cls, operands: io.Autogrow.Type) -> io.NodeOutput:
values = list(operands.values())
result = values[0]
for value in values[1:]:
result = result + value
return io.NodeOutput(result)
class Subtract(io.ComfyNode):
@classmethod
def define_schema(cls):
template = io.MatchType.Template("subtract")
autogrow_template = io.Autogrow.TemplatePrefix(
io.MatchType.Input("operand", template=template),
prefix="operand",
min=2,
max=10
)
return io.Schema(
node_id="Subtract",
display_name="Subtract",
category="math",
inputs=[
io.Autogrow.Input("operands", template=autogrow_template)
],
outputs=[
io.MatchType.Output(template=template)
],
)
@classmethod
def execute(cls, operands: io.Autogrow.Type) -> io.NodeOutput:
values = list(operands.values())
result = values[0]
for value in values[1:]:
result = result - value
return io.NodeOutput(result)
class Multiply(io.ComfyNode):
@classmethod
def define_schema(cls):
template = io.MatchType.Template("multiply")
autogrow_template = io.Autogrow.TemplatePrefix(
io.MatchType.Input("operand", template=template),
prefix="operand",
min=2,
max=10
)
return io.Schema(
node_id="Multiply",
display_name="Multiply",
category="math",
inputs=[
io.Autogrow.Input("operands", template=autogrow_template)
],
outputs=[
io.MatchType.Output(template=template)
],
)
@classmethod
def execute(cls, operands: io.Autogrow.Type) -> io.NodeOutput:
values = list(operands.values())
result = values[0]
for value in values[1:]:
result = result * value
return io.NodeOutput(result)
class Divide(io.ComfyNode):
@classmethod
def define_schema(cls):
template = io.MatchType.Template("divide")
autogrow_template = io.Autogrow.TemplatePrefix(
io.MatchType.Input("operand", template=template),
prefix="operand",
min=2,
max=10
)
return io.Schema(
node_id="Divide",
display_name="Divide",
category="math",
inputs=[
io.Autogrow.Input("operands", template=autogrow_template)
],
outputs=[
io.MatchType.Output(template=template)
],
)
@classmethod
def validate_inputs(cls, operands: io.Autogrow.Type) -> bool:
values = list(operands.values())
# Check for division by zero in any divisor (all operands except the first)
for value in values[1:]:
if value == 0:
return "Division by zero is not allowed"
return True
@classmethod
def execute(cls, operands: io.Autogrow.Type) -> io.NodeOutput:
values = list(operands.values())
result = values[0]
for value in values[1:]:
if value == 0:
raise ValueError("Division by zero is not allowed")
result = result / value
return io.NodeOutput(result)
class MathExtension(ComfyExtension):
@override
async def get_node_list(self) -> list[type[io.ComfyNode]]:
return [
Add,
Subtract,
Multiply,
Divide,
]
async def comfy_entrypoint() -> MathExtension:
return MathExtension()

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@ -2369,6 +2369,7 @@ async def init_builtin_extra_nodes():
"nodes_audio_encoder.py",
"nodes_rope.py",
"nodes_logic.py",
"nodes_math.py",
"nodes_nop.py",
"nodes_kandinsky5.py",
"nodes_wanmove.py",

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import pytest
from comfy_extras.nodes_math import Add, Subtract, Multiply, Divide
from comfy_api.latest import io
class TestAdd:
"""Test suite for Add node."""
def test_basic_addition_integers(self):
"""Test basic addition of two integers."""
operands = {"operand0": 5, "operand1": 3}
result = Add.execute(operands)
assert result.value == 8
assert isinstance(result, io.NodeOutput)
def test_addition_multiple_integers(self):
"""Test addition with multiple integers."""
operands = {"operand0": 5, "operand1": 3, "operand2": 2}
result = Add.execute(operands)
assert result.value == 10
def test_addition_with_zero(self):
"""Test addition with zero."""
operands = {"operand0": 10, "operand1": 0}
result = Add.execute(operands)
assert result.value == 10
def test_addition_with_negative(self):
"""Test addition with negative numbers."""
operands = {"operand0": 5, "operand1": -3}
result = Add.execute(operands)
assert result.value == 2
def test_addition_floats(self):
"""Test addition with floats."""
operands = {"operand0": 5.5, "operand1": 3.2}
result = Add.execute(operands)
assert abs(result.value - 8.7) < 1e-10
def test_addition_strings(self):
"""Test addition with strings (concatenation)."""
operands = {"operand0": "Hello", "operand1": " World"}
result = Add.execute(operands)
assert result.value == "Hello World"
def test_addition_lists(self):
"""Test addition with lists (like conditionings)."""
operands = {"operand0": [1, 2, 3], "operand1": [4, 5]}
result = Add.execute(operands)
assert result.value == [1, 2, 3, 4, 5]
class TestSubtract:
"""Test suite for Subtract node."""
def test_basic_subtraction_integers(self):
"""Test basic subtraction of two integers."""
operands = {"operand0": 10, "operand1": 3}
result = Subtract.execute(operands)
assert result.value == 7
assert isinstance(result, io.NodeOutput)
def test_subtraction_multiple_integers(self):
"""Test subtraction with multiple integers."""
operands = {"operand0": 20, "operand1": 5, "operand2": 3}
result = Subtract.execute(operands)
assert result.value == 12
def test_subtraction_with_zero(self):
"""Test subtraction with zero."""
operands = {"operand0": 10, "operand1": 0}
result = Subtract.execute(operands)
assert result.value == 10
def test_subtraction_resulting_negative(self):
"""Test subtraction that results in negative number."""
operands = {"operand0": 3, "operand1": 10}
result = Subtract.execute(operands)
assert result.value == -7
def test_subtraction_with_negative(self):
"""Test subtraction with negative numbers."""
operands = {"operand0": 5, "operand1": -3}
result = Subtract.execute(operands)
assert result.value == 8
def test_subtraction_floats(self):
"""Test subtraction with floats."""
operands = {"operand0": 10.5, "operand1": 3.2}
result = Subtract.execute(operands)
assert abs(result.value - 7.3) < 1e-10
class TestMultiply:
"""Test suite for Multiply node."""
def test_basic_multiplication_integers(self):
"""Test basic multiplication of two integers."""
operands = {"operand0": 5, "operand1": 3}
result = Multiply.execute(operands)
assert result.value == 15
assert isinstance(result, io.NodeOutput)
def test_multiplication_multiple_integers(self):
"""Test multiplication with multiple integers."""
operands = {"operand0": 2, "operand1": 3, "operand2": 4}
result = Multiply.execute(operands)
assert result.value == 24
def test_multiplication_with_zero(self):
"""Test multiplication with zero."""
operands = {"operand0": 10, "operand1": 0}
result = Multiply.execute(operands)
assert result.value == 0
def test_multiplication_with_one(self):
"""Test multiplication with one."""
operands = {"operand0": 10, "operand1": 1}
result = Multiply.execute(operands)
assert result.value == 10
def test_multiplication_with_negative(self):
"""Test multiplication with negative numbers."""
operands = {"operand0": 5, "operand1": -3}
result = Multiply.execute(operands)
assert result.value == -15
def test_multiplication_floats(self):
"""Test multiplication with floats."""
operands = {"operand0": 2.5, "operand1": 4.0}
result = Multiply.execute(operands)
assert abs(result.value - 10.0) < 1e-10
def test_multiplication_string_repetition(self):
"""Test multiplication with string (repetition)."""
operands = {"operand0": "Hello", "operand1": 3}
result = Multiply.execute(operands)
assert result.value == "HelloHelloHello"
class TestDivide:
"""Test suite for Divide node."""
def test_basic_division_integers(self):
"""Test basic division of two integers."""
operands = {"operand0": 10, "operand1": 2}
result = Divide.execute(operands)
assert result.value == 5.0 # Division returns float
assert isinstance(result, io.NodeOutput)
def test_division_multiple_integers(self):
"""Test division with multiple integers."""
operands = {"operand0": 100, "operand1": 2, "operand2": 5}
result = Divide.execute(operands)
assert result.value == 10.0
def test_division_with_remainder(self):
"""Test division that results in float."""
operands = {"operand0": 10, "operand1": 3}
result = Divide.execute(operands)
assert abs(result.value - 3.3333333333333335) < 1e-10
def test_division_with_negative(self):
"""Test division with negative numbers."""
operands = {"operand0": 10, "operand1": -2}
result = Divide.execute(operands)
assert result.value == -5.0
def test_division_by_one(self):
"""Test division by one."""
operands = {"operand0": 10, "operand1": 1}
result = Divide.execute(operands)
assert result.value == 10.0
def test_division_floats(self):
"""Test division with floats."""
operands = {"operand0": 10.5, "operand1": 2.5}
result = Divide.execute(operands)
assert abs(result.value - 4.2) < 1e-10
def test_validate_inputs_division_by_zero(self):
"""Test that division by zero is caught in validation."""
operands = {"operand0": 10, "operand1": 0}
validation_result = Divide.validate_inputs(operands)
assert validation_result == "Division by zero is not allowed"
def test_validate_inputs_division_by_zero_multiple(self):
"""Test that division by zero in later operands is caught."""
operands = {"operand0": 10, "operand1": 2, "operand2": 0}
validation_result = Divide.validate_inputs(operands)
assert validation_result == "Division by zero is not allowed"
def test_validate_inputs_normal_division(self):
"""Test that normal division passes validation."""
operands = {"operand0": 10, "operand1": 2}
validation_result = Divide.validate_inputs(operands)
assert validation_result is True
def test_execute_division_by_zero_raises_error(self):
"""Test that division by zero raises ValueError in execute."""
operands = {"operand0": 10, "operand1": 0}
with pytest.raises(ValueError, match="Division by zero is not allowed"):
Divide.execute(operands)
def test_execute_division_by_zero_multiple_raises_error(self):
"""Test that division by zero in later operands raises error."""
operands = {"operand0": 100, "operand1": 2, "operand2": 0}
with pytest.raises(ValueError, match="Division by zero is not allowed"):
Divide.execute(operands)
class TestMathNodesSchema:
"""Test suite for node schemas."""
def test_add_schema(self):
"""Test Add schema definition."""
schema = Add.define_schema()
assert schema.node_id == "Add"
assert schema.display_name == "Add"
assert schema.category == "math"
def test_subtract_schema(self):
"""Test Subtract schema definition."""
schema = Subtract.define_schema()
assert schema.node_id == "Subtract"
assert schema.display_name == "Subtract"
assert schema.category == "math"
def test_multiply_schema(self):
"""Test Multiply schema definition."""
schema = Multiply.define_schema()
assert schema.node_id == "Multiply"
assert schema.display_name == "Multiply"
assert schema.category == "math"
def test_divide_schema(self):
"""Test Divide schema definition."""
schema = Divide.define_schema()
assert schema.node_id == "Divide"
assert schema.display_name == "Divide"
assert schema.category == "math"
class TestMathExtension:
"""Test suite for MathExtension."""
@pytest.mark.asyncio
async def test_extension_node_list(self):
"""Test that MathExtension returns all math nodes."""
from comfy_extras.nodes_math import MathExtension
extension = MathExtension()
node_list = await extension.get_node_list()
assert len(node_list) == 4
assert Add in node_list
assert Subtract in node_list
assert Multiply in node_list
assert Divide in node_list