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# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
# For details: https://github.com/PyCQA/pylint/blob/main/LICENSE
# Copyright (c) https://github.com/PyCQA/pylint/blob/main/CONTRIBUTORS.txt
from __future__ import annotations
import pytest
from astroid import nodes
from pylint.pyreverse.dot_printer import DotPrinter
from pylint.pyreverse.plantuml_printer import PlantUmlPrinter
from pylint.pyreverse.printer import Layout, NodeType, Printer
from pylint.pyreverse.vcg_printer import VCGPrinter
@pytest.mark.parametrize(
"layout, printer_class, expected_content, line_index",
[
(Layout.TOP_TO_BOTTOM, DotPrinter, "rankdir=TB", -2),
(Layout.BOTTOM_TO_TOP, DotPrinter, "rankdir=BT", -2),
(Layout.LEFT_TO_RIGHT, DotPrinter, "rankdir=LR", -2),
(Layout.RIGHT_TO_LEFT, DotPrinter, "rankdir=RL", -2),
(Layout.TOP_TO_BOTTOM, VCGPrinter, "orientation:top_to_bottom", -1),
(Layout.BOTTOM_TO_TOP, VCGPrinter, "orientation:bottom_to_top", -1),
(Layout.LEFT_TO_RIGHT, VCGPrinter, "orientation:left_to_right", -1),
(Layout.RIGHT_TO_LEFT, VCGPrinter, "orientation:right_to_left", -1),
(Layout.TOP_TO_BOTTOM, PlantUmlPrinter, "top to bottom direction", -1),
(Layout.LEFT_TO_RIGHT, PlantUmlPrinter, "left to right direction", -1),
],
)
def test_explicit_layout(
layout: Layout, printer_class: type[Printer], expected_content: str, line_index: int
) -> None:
printer = printer_class(title="unittest", layout=layout)
assert printer.lines[line_index].strip() == expected_content
@pytest.mark.parametrize(
"layout, printer_class",
[(Layout.BOTTOM_TO_TOP, PlantUmlPrinter), (Layout.RIGHT_TO_LEFT, PlantUmlPrinter)],
)
def test_unsupported_layout(layout: Layout, printer_class: type[Printer]) -> None:
with pytest.raises(ValueError):
printer_class(title="unittest", layout=layout)
def test_method_arguments_none() -> None:
func = nodes.FunctionDef()
args = nodes.Arguments()
args.args = None
func.postinit(args, body=None)
parsed_args = Printer._get_method_arguments(func)
assert parsed_args == []
class TestPlantUmlPrinter:
printer = PlantUmlPrinter(title="unittest", layout=Layout.TOP_TO_BOTTOM)
def test_node_without_properties(self) -> None:
self.printer.emit_node(name="test", type_=NodeType.CLASS)
assert self.printer.lines[-2:] == ['class "test" as test {\n', "}\n"]
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