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Loi Nguyen
ba8ce362d7
Co-authored-by: Loi Nguyen <1948922+lntutor@users.noreply.github.com> Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
53 lines
1.8 KiB
Python
53 lines
1.8 KiB
Python
import math
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import pytest
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from libs.pagination import PaginatedResult
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class TestPaginatedResultPages:
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def test_pages_is_zero_for_empty_result(self):
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# Parity with Flask-SQLAlchemy's Pagination.pages, which PaginatedResult
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# was introduced to replace as a drop-in (#38280): an empty result set
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# has zero pages, not one.
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result = PaginatedResult(items=[], total=0, page=1, per_page=20)
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assert result.pages == 0
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def test_has_next_is_false_for_empty_result(self):
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result = PaginatedResult(items=[], total=0, page=1, per_page=20)
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assert result.has_next is False
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@pytest.mark.parametrize(
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("total", "per_page", "expected_pages"),
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[
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(1, 20, 1),
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(20, 20, 1),
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(21, 20, 2),
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(40, 20, 2),
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(41, 20, 3),
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],
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)
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def test_pages_for_non_empty_result(self, total, per_page, expected_pages):
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result = PaginatedResult(items=[object()], total=total, page=1, per_page=per_page)
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assert result.pages == expected_pages == math.ceil(total / per_page)
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def test_pages_is_zero_when_per_page_is_zero(self):
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result = PaginatedResult(items=[], total=0, page=1, per_page=0)
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assert result.pages == 0
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class TestPaginatedResultHasNext:
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def test_has_next_true_when_more_pages_remain(self):
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result = PaginatedResult(items=[object()], total=41, page=1, per_page=20)
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assert result.has_next is True
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def test_has_next_false_on_last_page(self):
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result = PaginatedResult(items=[object()], total=41, page=3, per_page=20)
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assert result.has_next is False
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def test_paginated_result_is_iterable():
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items = [1, 2, 3]
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result = PaginatedResult(items=items, total=3, page=1, per_page=20)
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assert list(result) == items
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