mwparserfromhell/tests/test_argument.py

# Copyright (C) 2012-2020 Ben Kurtovic <ben.kurtovic@gmail.com>
#
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import pytest

from mwparserfromhell.nodes import Argument, Text

from ._test_tree_equality import TreeEqualityTestCase, wrap, wraptext

class TestArgument(TreeEqualityTestCase):
    """Test cases for the Argument node."""

    def test_str(self):
        """test Argument.__str__()"""
        node = Argument(wraptext("foobar"))
        assert "{{{foobar}}}" == str(node)
        node2 = Argument(wraptext("foo"), wraptext("bar"))
        assert "{{{foo|bar}}}" == str(node2)

    def test_children(self):
        """test Argument.__children__()"""
        node1 = Argument(wraptext("foobar"))
        node2 = Argument(wraptext("foo"), wrap([Text("bar"), Text("baz")]))
        gen1 = node1.__children__()
        gen2 = node2.__children__()
        assert node1.name is next(gen1)
        assert node2.name is next(gen2)
        assert node2.default is next(gen2)
        with pytest.raises(StopIteration):
            next(gen1)
        with pytest.raises(StopIteration):
            next(gen2)

    def test_strip(self):
        """test Argument.__strip__()"""
        node1 = Argument(wraptext("foobar"))
        node2 = Argument(wraptext("foo"), wraptext("bar"))
        assert node1.__strip__() is None
        assert "bar" == node2.__strip__()

    def test_showtree(self):
        """test Argument.__showtree__()"""
        output = []
        getter, marker = object(), object()
        get = lambda code: output.append((getter, code))
        mark = lambda: output.append(marker)
        node1 = Argument(wraptext("foobar"))
        node2 = Argument(wraptext("foo"), wraptext("bar"))
        node1.__showtree__(output.append, get, mark)
        node2.__showtree__(output.append, get, mark)
        valid = [
            "{{{", (getter, node1.name), "}}}", "{{{", (getter, node2.name),
            "    | ", marker, (getter, node2.default), "}}}"]
        assert valid == output

    def test_name(self):
        """test getter/setter for the name attribute"""
        name = wraptext("foobar")
        node1 = Argument(name)
        node2 = Argument(name, wraptext("baz"))
        assert name is node1.name
        assert name is node2.name
        node1.name = "héhehé"
        node2.name = "héhehé"
        self.assertWikicodeEqual(wraptext("héhehé"), node1.name)
        self.assertWikicodeEqual(wraptext("héhehé"), node2.name)

    def test_default(self):
        """test getter/setter for the default attribute"""
        default = wraptext("baz")
        node1 = Argument(wraptext("foobar"))
        node2 = Argument(wraptext("foobar"), default)
        assert None is node1.default
        assert default is node2.default
        node1.default = "buzz"
        node2.default = None
        self.assertWikicodeEqual(wraptext("buzz"), node1.default)
        assert None is node2.default