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48 lines
1.4 KiB
Python
48 lines
1.4 KiB
Python
import dataclasses
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import pytest
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from domain.postcode import Postcode
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def test_postcode_uppercases() -> None:
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assert Postcode("sw1a1aa").value == "SW1A1AA"
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def test_postcode_strips_internal_spaces() -> None:
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assert Postcode("sw1a 1aa").value == "SW1A1AA"
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def test_postcode_strips_leading_and_trailing_whitespace() -> None:
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assert Postcode(" sw1a 1aa ").value == "SW1A1AA"
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def test_postcode_strips_tabs_and_newlines() -> None:
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# CSV ingestion occasionally introduces stray whitespace characters; the
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# canonical form must absorb them just like literal spaces.
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assert Postcode("sw1a\t1aa\n").value == "SW1A1AA"
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def test_postcode_construction_is_idempotent() -> None:
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once = Postcode("sw1a 1aa")
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assert Postcode(once.value).value == "SW1A1AA"
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def test_postcode_empty_string() -> None:
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assert Postcode("").value == ""
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def test_postcode_str_returns_canonical_value() -> None:
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assert str(Postcode("sw1a 1aa")) == "SW1A1AA"
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def test_postcode_equality_ignores_surface_form() -> None:
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# Differing case / whitespace sanitise to the same canonical value, so
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# the value objects compare equal.
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assert Postcode("sw1a 1aa") == Postcode("SW1A1AA")
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def test_postcode_is_frozen() -> None:
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postcode = Postcode("SW1A1AA")
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with pytest.raises(dataclasses.FrozenInstanceError):
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postcode.value = "OTHER" # type: ignore[misc]
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