Implemented testing functions
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338
tests/test_matches.py
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338
tests/test_matches.py
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import pytest
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from fastcore.basics import NotStr
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from fasthtml.components import *
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from myfasthtml.core.matcher import matches, StartsWith, Contains, DoesNotContain, Empty, DoNotCheck, ErrorOutput, \
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ErrorComparisonOutput
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from myfasthtml.core.testclient import MyFT
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@pytest.mark.parametrize('actual, expected', [
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(None, None),
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(123, 123),
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(Div(), Div()),
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([Div(), Span()], [Div(), Span()]),
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(Div(attr1="value"), Div(attr1="value")),
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(Div(attr1="value", attr2="value"), Div(attr1="value")),
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(Div(attr1="valueXXX", attr2="value"), Div(attr1=StartsWith("value"))),
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(Div(attr1="before value after", attr2="value"), Div(attr1=Contains("value"))),
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(Div(attr1="before after", attr2="value"), Div(attr1=DoesNotContain("value"))),
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(None, DoNotCheck()),
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(123, DoNotCheck()),
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(Div(), DoNotCheck()),
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([Div(), Span()], DoNotCheck()),
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(NotStr("123456"), NotStr("123")), # for NotStr, only the beginning is checked
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(Div(), Div(Empty())),
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(Div(123), Div(123)),
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(Div(Span(123)), Div(Span(123))),
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(Div(Span(123)), Div(DoNotCheck())),
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])
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def test_i_can_match(actual, expected):
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assert matches(actual, expected)
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@pytest.mark.parametrize('actual, expected, error_message', [
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(None, Div(), "Actual is None"),
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(Div(), None, "Actual is not None"),
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(123, Div(), "The types are different"),
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(123, 124, "The values are different"),
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([Div(), Span()], [], "Actual is bigger than expected"),
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([], [Div(), Span()], "Actual is smaller than expected"),
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("not a list", [Div(), Span()], "The types are different"),
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([Div(), Span()], [Div(), 123], "The types are different"),
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(Div(), Span(), "The elements are different"),
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([Div(), Span()], [Div(), Div()], "The elements are different"),
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(Div(), Div(attr1="value"), "'attr1' is not found in Actual"),
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(Div(attr2="value"), Div(attr1="value"), "'attr1' is not found in Actual"),
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(Div(attr1="value1"), Div(attr1="value2"), "The values are different for 'attr1'"),
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(Div(attr1="value1"), Div(attr1=StartsWith("value2")), "The condition 'StartsWith(value2)' is not satisfied"),
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(Div(attr1="value1"), Div(attr1=Contains("value2")), "The condition 'Contains(value2)' is not satisfied"),
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(Div(attr1="value1 value2"), Div(attr1=DoesNotContain("value2")), "The condition 'DoesNotContain(value2)'"),
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(NotStr("456"), NotStr("123"), "Notstr values are different"),
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(Div(attr="value"), Div(Empty()), "Actual is not empty"),
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(Div(120), Div(Empty()), "Actual is not empty"),
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(Div(Span()), Div(Empty()), "Actual is not empty"),
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(Div(), Div(Span()), "Actual is lesser than expected"),
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(Div(), Div(123), "Actual is lesser than expected"),
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(Div(Span()), Div(Div()), "The elements are different"),
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(Div(123), Div(Div()), "The types are different"),
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(Div(123), Div(456), "The values are different"),
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(Div(Span(), Span()), Div(Span(), Div()), "The elements are different"),
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(Div(Span(Div())), Div(Span(Span())), "The elements are different"),
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])
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def test_i_can_detect_errors(actual, expected, error_message):
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with pytest.raises(AssertionError) as exc_info:
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matches(actual, expected)
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assert error_message in str(exc_info.value)
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@pytest.mark.parametrize('element, expected_path', [
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(Div(), "Path : 'div"),
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(Div(Span()), "Path : 'div.span"),
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(Div(Span(Div())), "Path : 'div.span.div"),
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(Div(id="div_id"), "Path : 'div#div_id"),
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(Div(cls="div_class"), "Path : 'div[class=div_class]"),
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(Div(name="div_class"), "Path : 'div[name=div_class]"),
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(Div(attr="value"), "Path : 'div"),
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(Div(Span(Div(), cls="span_class"), id="div_id"), "Path : 'div#div_id.span[class=span_class].div"),
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])
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def test_i_can_properly_show_path(element, expected_path):
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def _construct_test_element(source, tail):
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res = MyFT(source.tag, source.attrs)
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if source.children:
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res.children = [_construct_test_element(child, tail) for child in source.children]
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else:
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res.children = [tail]
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return res
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with pytest.raises(AssertionError) as exc_info:
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actual = _construct_test_element(element, "Actual")
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expected = _construct_test_element(element, "Expected")
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matches(actual, expected)
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assert expected_path in str(exc_info.value)
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def test_i_can_output_error_path():
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elt = Div()
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expected = Div()
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path = "div#div_id.div.span[class=span_class].p[name=p_name].div"
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error_output = ErrorOutput(path, elt, expected)
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error_output.compute()
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assert error_output.output == ['(div "id"="div_id" ...',
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' (div ...',
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' (span "class"="span_class" ...',
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' (p "name"="p_name" ...',
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' (div )']
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def test_i_can_output_error_attribute():
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elt = Div(attr1="value1", attr2="value2")
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expected = elt
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path = ""
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error_output = ErrorOutput(path, elt, expected)
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error_output.compute()
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assert error_output.output == ['(div "attr1"="value1" "attr2"="value2")']
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def test_i_can_output_error_attribute_missing_1():
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elt = Div(attr2="value2")
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expected = Div(attr1="value1", attr2="value2")
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path = ""
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error_output = ErrorOutput(path, elt, expected)
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error_output.compute()
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assert error_output.output == ['(div "attr1"="** MISSING **" "attr2"="value2")',
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' ^^^^^^^^^^^^^^^^^^^^^^^ ']
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def test_i_can_output_error_attribute_missing_2():
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elt = Div(attr1="value1")
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expected = Div(attr1="value1", attr2="value2")
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path = ""
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error_output = ErrorOutput(path, elt, expected)
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error_output.compute()
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assert error_output.output == ['(div "attr1"="value1" "attr2"="** MISSING **")',
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' ^^^^^^^^^^^^^^^^^^^^^^^']
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def test_i_can_output_error_attribute_wrong_value():
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elt = Div(attr1="value3", attr2="value2")
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expected = Div(attr1="value1", attr2="value2")
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path = ""
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error_output = ErrorOutput(path, elt, expected)
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error_output.compute()
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assert error_output.output == ['(div "attr1"="value3" "attr2"="value2")',
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' ^^^^^^^^^^^^^^^^ ']
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def test_i_can_output_error_constant():
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elt = 123
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expected = elt
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path = ""
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error_output = ErrorOutput(path, elt, expected)
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error_output.compute()
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assert error_output.output == ['123']
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def test_i_can_output_error_constant_wrong_value():
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elt = 123
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expected = 456
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path = ""
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error_output = ErrorOutput(path, elt, expected)
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error_output.compute()
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assert error_output.output == ['123',
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'^^^']
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def test_i_can_output_error_when_predicate():
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elt = "before value after"
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expected = Contains("value")
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path = ""
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error_output = ErrorOutput(path, elt, expected)
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error_output.compute()
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assert error_output.output == ["before value after"]
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def test_i_can_output_error_when_predicate_wrong_value():
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elt = "before after"
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expected = Contains("value")
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path = ""
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error_output = ErrorOutput(path, elt, expected)
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error_output.compute()
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assert error_output.output == ["before after",
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"^^^^^^^^^^^^"]
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def test_i_can_output_error_child_element():
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elt = Div(P(id="p_id"), Div(id="child_1"), Div(id="child_2"), attr1="value1")
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expected = elt
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path = ""
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error_output = ErrorOutput(path, elt, expected)
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error_output.compute()
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assert error_output.output == ['(div "attr1"="value1"',
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' (p "id"="p_id")',
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' (div "id"="child_1")',
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' (div "id"="child_2")',
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')',
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]
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def test_i_can_output_error_child_element_indicating_sub_children():
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elt = Div(P(id="p_id"), Div(Div(id="child_2"), id="child_1"), attr1="value1")
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expected = elt
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path = ""
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error_output = ErrorOutput(path, elt, expected)
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error_output.compute()
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assert error_output.output == ['(div "attr1"="value1"',
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' (p "id"="p_id")',
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' (div "id"="child_1" ...)',
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')',
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]
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def test_i_can_output_error_child_element_wrong_value():
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elt = Div(P(id="p_id"), Div(id="child_2"), attr1="value1")
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expected = Div(P(id="p_id"), Div(id="child_1"), attr1="value1")
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path = ""
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error_output = ErrorOutput(path, elt, expected)
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error_output.compute()
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assert error_output.output == ['(div "attr1"="value1"',
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' (p "id"="p_id")',
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' (div "id"="child_2")',
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' ^^^^^^^^^^^^^^',
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')',
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]
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def test_i_can_output_error_fewer_elements():
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elt = Div(P(id="p_id"), attr1="value1")
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expected = Div(P(id="p_id"), Div(id="child_1"), attr1="value1")
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path = ""
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error_output = ErrorOutput(path, elt, expected)
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error_output.compute()
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assert error_output.output == ['(div "attr1"="value1"',
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' (p "id"="p_id")',
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' ! ** MISSING ** !',
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')',
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]
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def test_i_can_output_comparison():
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actual = Div(P(id="p_id"), attr1="value1")
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expected = actual
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actual_out = ErrorOutput("", actual, expected)
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expected_out = ErrorOutput("", expected, expected)
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comparison_out = ErrorComparisonOutput(actual_out, expected_out)
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res = comparison_out.render()
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assert "\n" + res == '''
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(div "attr1"="value1" | (div "attr1"="value1"
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(p "id"="p_id") | (p "id"="p_id")
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) | )'''
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def test_i_can_output_comparison_with_path():
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actual = Div(P(id="p_id"), attr1="value1")
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expected = actual
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actual_out = ErrorOutput("div#div_id.span[class=cls].div", actual, expected)
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expected_out = ErrorOutput("div#div_id.span[class=cls].div", expected, expected)
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comparison_out = ErrorComparisonOutput(actual_out, expected_out)
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res = comparison_out.render()
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assert "\n" + res == '''
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(div "id"="div_id" ... | (div "id"="div_id" ...
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(span "class"="cls" ... | (span "class"="cls" ...
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(div "attr1"="value1" | (div "attr1"="value1"
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(p "id"="p_id") | (p "id"="p_id")
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) | )'''
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def test_i_can_output_comparison_when_missing_attributes():
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actual = Div(P(id="p_id"), attr1="value1")
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expected = Div(P(id="p_id"), attr2="value1")
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actual_out = ErrorOutput("", actual, expected)
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expected_out = ErrorOutput("", expected, expected)
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comparison_out = ErrorComparisonOutput(actual_out, expected_out)
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res = comparison_out.render()
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assert "\n" + res == '''
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(div "attr2"="** MISSING **" | (div "attr2"="value1"
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^^^^^^^^^^^^^^^^^^^^^^^ |
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(p "id"="p_id") | (p "id"="p_id")
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) | )'''
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def test_i_can_output_comparison_when_wrong_attributes():
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actual = Div(P(id="p_id"), attr1="value2")
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expected = Div(P(id="p_id"), attr1="value1")
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actual_out = ErrorOutput("", actual, expected)
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expected_out = ErrorOutput("", expected, expected)
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comparison_out = ErrorComparisonOutput(actual_out, expected_out)
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res = comparison_out.render()
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assert "\n" + res == '''
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(div "attr1"="value2" | (div "attr1"="value1"
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^^^^^^^^^^^^^^^^ |
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(p "id"="p_id") | (p "id"="p_id")
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) | )'''
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def test_i_can_output_comparison_when_fewer_elements():
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actual = Div(P(id="p_id"), attr1="value1")
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expected = Div(Span(id="s_id"), P(id="p_id"), attr1="value1")
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actual_out = ErrorOutput("", actual, expected)
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expected_out = ErrorOutput("", expected, expected)
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comparison_out = ErrorComparisonOutput(actual_out, expected_out)
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res = comparison_out.render()
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assert "\n" + res == '''
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(div "attr1"="value1" | (div "attr1"="value1"
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(p "id"="p_id") | (span "id"="s_id")
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^ ^^^^^^^^^^^ |
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! ** MISSING ** ! | (p "id"="p_id")
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) | )'''
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def test_i_can_see_the_diff_when_matching():
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actual = Div(attr1="value1")
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expected = Div(attr1=Contains("value2"))
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with pytest.raises(AssertionError) as exc_info:
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matches(actual, expected)
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debug_output = str(exc_info.value)
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assert "\n" + debug_output == """
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Path : 'div'
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Error : The condition 'Contains(value2)' is not satisfied.
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(div "attr1"="value1") | (div "attr1"="Contains(value2)")
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^^^^^^^^^^^^^^^^ |"""
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