153 lines
5.0 KiB
Python
153 lines
5.0 KiB
Python
from datetime import date
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import pytest
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from src.models.category import Category, CategoryBudget
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class TestCategoryComputedFields:
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"""Tests for Category's computed fields and special methods."""
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def test_hash_id_computed_field_simple(self):
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"""Test hash_id for single-level category."""
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c = Category.from_str("single")
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assert hasattr(c, "hash_id")
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assert isinstance(c.hash_id, str)
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# Hash should be deterministic for same inputs
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c2 = Category.from_str("single")
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assert c.hash_id == c2.hash_id
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def test_hash_id_computed_field_nested(self):
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"""Test hash_id for multi-level category hierarchy."""
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c1 = Category.from_str("level1:level2:level3")
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assert hasattr(c1, "hash_id")
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c2 = Category.from_str("level1:level2:level3")
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assert c1.hash_id == c2.hash_id
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def test_hash_id_different_hierarchy(self):
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"""Test that different hierarchies have different hash_ids."""
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c1 = Category.from_str("A:B")
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c2 = Category.from_str("A:C")
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# Different last level -> different hash_id
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assert c1.hash_id != c2.hash_id
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def test_hash_id_same_name_different_parent(self):
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"""Test that same name but different parent gives different hash."""
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root = Category(name="Budget")
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cat1 = Category(name="Budget", parent=root)
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# Create another with same name but no parent
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orphan = Category.from_str("Budget")
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assert cat1.hash_id != orphan.hash_id
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def test_to_str_single_level(self):
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"""Test to_str() for single-level category."""
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c = Category.from_str("single")
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assert c.to_str() == "single"
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def test_to_str_nested(self):
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"""Test to_str() for nested category."""
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c = Category.from_str("parent:child:grandchild")
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assert c.to_str() == "parent:child:grandchild"
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def test_str_uses_to_str(self):
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"""Test that __str__ delegates to to_str()."""
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c = Category.from_str("A:B:C")
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assert str(c) == c.to_str() == "A:B:C"
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def test_repr_simple(self):
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"""Test repr() for single-level category."""
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c = Category.from_str("single")
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expected = 'Category.from_str("single")'
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assert repr(c) == expected
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def test_repr_nested(self):
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"""Test repr() for nested category."""
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c = Category.from_str("parent:child")
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expected = 'Category.from_str("parent:child")'
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assert repr(c) == expected
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class TestCategoryBudgetValidation:
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"""Tests for CategoryBudget's date range validation."""
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def test_valid_budget_no_dates(self):
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"""Budget with None dates is valid."""
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cat = Category.from_str("test")
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budget = CategoryBudget(
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category=cat,
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amount_eur=100.00,
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)
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assert budget.valid_from is None
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assert budget.valid_to is None
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def test_valid_budget_with_dates(self):
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"""Budget with valid date range is accepted."""
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cat = Category.from_str("test")
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budget = CategoryBudget(
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category=cat,
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amount_eur=100.00,
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valid_from=date(2026, 10, 1),
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valid_to=date(2026, 10, 31),
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)
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assert budget.valid_from == date(2026, 10, 1)
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assert budget.valid_to == date(2026, 10, 31)
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def test_invalid_date_range_raises(self):
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"""Budget with valid_from > valid_to raises ValueError."""
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cat = Category.from_str("test")
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with pytest.raises(ValueError) as exc_info:
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CategoryBudget(
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category=cat,
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amount_eur=100.00,
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valid_from=date(2026, 10, 31),
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valid_to=date(2026, 10, 1),
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)
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assert "valid_from" in str(exc_info.value)
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assert "valid_to" in str(exc_info.value)
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assert "nor in order" in str(exc_info.value)
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def test_valid_budget_exact_boundary(self):
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"""Budget with exact same from and to is valid (single day)."""
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cat = Category.from_str("test")
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budget = CategoryBudget(
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category=cat,
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amount_eur=100.00,
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valid_from=date(2026, 10, 1),
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valid_to=date(2026, 10, 1),
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)
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assert budget.valid_from == date(2026, 10, 1)
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assert budget.valid_to == date(2026, 10, 1)
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def test_validation_preserves_original_values(self):
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"""Validation doesn't change the model's original values."""
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cat = Category.from_str("test")
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budget = CategoryBudget(
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category=cat,
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amount_eur=150.75,
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valid_from=date(2026, 9, 1),
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valid_to=date(2026, 9, 30),
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)
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# Create an invalid one (valid_from > valid_to) and verify validation catches it
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try:
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CategoryBudget(
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category=cat,
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amount_eur=200.00,
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valid_from=date(2026, 12, 31),
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valid_to=date(2026, 12, 30),
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)
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except ValueError:
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pass # Expected
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# Valid one should still have original values
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assert budget.amount_eur == 150.75
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