Update Canada holidays: add National Day for Truth and Reconciliation in MB #2829
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Summary by CodeRabbit
WalkthroughAdds Manitoba’s National Day for Truth and Reconciliation (Sep 30) effective 2024 to Canada holiday rules and docstring; updates tests to handle per-subdivision start years, moves Alberta’s 09-30 entry to optional holidays, and adds MB-specific observed-date assertions. Changes
Estimated code review effort🎯 3 (Moderate) | ⏱️ ~25 minutes Suggested labels
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## dev #2829 +/- ##
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Branches 2255 2229 -26
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📒 Files selected for processing (2)
holidays/countries/canada.py(2 hunks)tests/countries/test_canada.py(1 hunks)
🧰 Additional context used
🧠 Learnings (8)
📓 Common learnings
Learnt from: PPsyrius
PR: vacanza/holidays#2416
File: tests/countries/test_turkmenistan.py:52-64
Timestamp: 2025-04-05T04:47:27.213Z
Learning: For holiday tests in the vacanza/holidays project, structure tests by individual holidays rather than by years. Each test method should focus on a specific holiday and test it across multiple years (from start_year through 2050) using helper methods like `assertHolidayName`. For fixed holidays, use generators like `(f"{year}-01-01" for year in range(1991, 2051))`. For movable holidays, specify individual dates for specific years followed by a range check.
📚 Learning: 2025-06-16T11:42:28.293Z
Learnt from: PPsyrius
PR: vacanza/holidays#2638
File: holidays/countries/svalbard_and_jan_mayen.py:1-12
Timestamp: 2025-06-16T11:42:28.293Z
Learning: In the holidays library codebase, country implementation files in holidays/countries/ follow a standard convention of NOT having module-level docstrings. They start with the license header comment block, followed by imports, then class definitions. This is consistent across all country implementations like austria.py, belgium.py, canada.py, etc.
Applied to files:
holidays/countries/canada.py
📚 Learning: 2025-06-18T10:07:58.780Z
Learnt from: PPsyrius
PR: vacanza/holidays#2642
File: holidays/countries/french_southern_territories.py:41-44
Timestamp: 2025-06-18T10:07:58.780Z
Learning: Territorial holiday classes that inherit from parent countries (like HolidaysAX from Finland, HolidaysSJ from Norway, HolidaysTF from France) follow a standard pattern of silently overriding self.subdiv in their _populate_public_holidays() method without validation, as this ensures they always use the correct subdivision code for their territory regardless of user input.
Applied to files:
holidays/countries/canada.pytests/countries/test_canada.py
📚 Learning: 2025-05-06T21:07:11.577Z
Learnt from: KJhellico
PR: vacanza/holidays#2530
File: tests/countries/test_andorra.py:23-28
Timestamp: 2025-05-06T21:07:11.577Z
Learning: In the holidays project, test methods for country holidays follow a standard form where year ranges are explicitly recreated in each test method rather than being stored as class variables, to maintain consistency across all country tests.
Applied to files:
tests/countries/test_canada.py
📚 Learning: 2025-04-05T04:47:27.213Z
Learnt from: PPsyrius
PR: vacanza/holidays#2416
File: tests/countries/test_turkmenistan.py:52-64
Timestamp: 2025-04-05T04:47:27.213Z
Learning: For holiday tests in the vacanza/holidays project, structure tests by individual holidays rather than by years. Each test method should focus on a specific holiday and test it across multiple years (from start_year through 2050) using helper methods like `assertHolidayName`. For fixed holidays, use generators like `(f"{year}-01-01" for year in range(1991, 2051))`. For movable holidays, specify individual dates for specific years followed by a range check.
Applied to files:
tests/countries/test_canada.py
📚 Learning: 2025-04-05T06:49:06.217Z
Learnt from: PPsyrius
PR: vacanza/holidays#2386
File: tests/countries/test_nepal.py:499-536
Timestamp: 2025-04-05T06:49:06.217Z
Learning: In the holidays project, test files follow a dual testing approach: individual methods test specific holidays across multiple years, while comprehensive year-specific tests (e.g., `test_2025`) verify all holidays for a specific year in a single assertion. Both approaches serve different testing purposes and complement each other.
Applied to files:
tests/countries/test_canada.py
📚 Learning: 2025-07-09T21:16:35.145Z
Learnt from: KJhellico
PR: vacanza/holidays#2623
File: tests/countries/test_christmas_island.py:136-146
Timestamp: 2025-07-09T21:16:35.145Z
Learning: In Christmas Island's holiday implementation, the test_christmas_day method cannot use assertNoNonObservedHoliday because in some years observed Christmas Day overlaps with Boxing Day when both holidays are moved due to weekend conflicts, causing the standard non-observed holiday check to fail inappropriately.
Applied to files:
tests/countries/test_canada.py
📚 Learning: 2025-04-04T10:52:41.546Z
Learnt from: KJhellico
PR: vacanza/holidays#2398
File: holidays/countries/guinea.py:106-110
Timestamp: 2025-04-04T10:52:41.546Z
Learning: In the Guinea holidays implementation, observed Eid al-Fitr cases are properly covered by the test_eid_al_fitr_day() method, which tests both the regular holiday dates and the observed dates when the holiday falls on a non-working day (for years >= 2023).
Applied to files:
tests/countries/test_canada.py
🧬 Code Graph Analysis (1)
tests/countries/test_canada.py (1)
tests/common.py (3)
assertHolidayName(195-199)assertNoHolidayName(273-275)assertNoNonObservedHoliday(248-250)
🔇 Additional comments (4)
holidays/countries/canada.py (1)
49-49: Reference link for MB NTR added — looks goodThe added archived link to Manitoba’s legislation is appropriate and matches the change implemented below.
tests/countries/test_canada.py (3)
273-280: Consolidated per-subdivision start years — nice cleanupShared mapping reads well and avoids repetitive lookups; MB: 2024 is correctly captured.
291-296: AB checks moved to optional — matches implementationAssertions correctly validate AB’s NTR as optional (2021+) and absent pre-2021.
282-289: Please confirm minimum Python ≥3.8 support before using the walrus operator
I didn’t find anypython_requiresin yourpyproject.tomlnor explicit Python versions in the GitHub Actions CI matrix. If you still need to support CPython <3.8, switch to an explicit assignment; otherwise the walrus is fine once you verify CI runs on ≥3.8.Non-walrus alternative:
- if start_year := subdiv_start_years.get(subdiv): + start_year = subdiv_start_years.get(subdiv) + if start_year is not None: self.assertHolidayName( name, holidays, (f"{year}-09-30" for year in range(start_year, 2050)) ) self.assertNoHolidayName(name, holidays, range(1867, start_year)) else: self.assertNoHolidayName(name, holidays) self.assertNoNonObservedHoliday(self.subdiv_holidays_non_observed[subdiv], dts)– Verify
pyproject.toml(orsetup.cfg/setup.py) forpython_requires
– Inspect.github/workflows/ci-cd.ymlmatrix for CPython versions
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Actionable comments posted: 1
📜 Review details
Configuration used: .coderabbit.yaml
Review profile: ASSERTIVE
Plan: Pro
💡 Knowledge Base configuration:
- MCP integration is disabled by default for public repositories
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📒 Files selected for processing (2)
holidays/countries/canada.py(2 hunks)tests/countries/test_canada.py(1 hunks)
🧰 Additional context used
🧠 Learnings (18)
📓 Common learnings
Learnt from: PPsyrius
PR: vacanza/holidays#2829
File: holidays/countries/canada.py:281-284
Timestamp: 2025-08-19T16:13:06.358Z
Learning: For Manitoba's National Day for Truth and Reconciliation (Sep 30), Manitoba's Bill 4 creates two separate rules: Employment Standards Code prohibits date substitution for employers/employees (so Sep 30 is always the holiday), while Public Schools Act requires school closure on following Monday only when Sep 30 falls on weekend. The holidays library's PUBLIC category follows employment law, not school schedules.
Learnt from: KJhellico
PR: vacanza/holidays#2608
File: tests/countries/test_saint_vincent_and_the_grenadines.py:162-178
Timestamp: 2025-07-02T18:17:53.342Z
Learning: In the Saint Vincent and the Grenadines holidays implementation, New Year's Day is added without observed rules using `_add_new_years_day()` and should not include observed rule testing in its test method. Only holidays explicitly wrapped with `_add_observed()` have observed behavior.
📚 Learning: 2025-08-19T16:13:06.358Z
Learnt from: PPsyrius
PR: vacanza/holidays#2829
File: holidays/countries/canada.py:281-284
Timestamp: 2025-08-19T16:13:06.358Z
Learning: For Manitoba's National Day for Truth and Reconciliation (Sep 30), Manitoba's Bill 4 creates two separate rules: Employment Standards Code prohibits date substitution for employers/employees (so Sep 30 is always the holiday), while Public Schools Act requires school closure on following Monday only when Sep 30 falls on weekend. The holidays library's PUBLIC category follows employment law, not school schedules.
Applied to files:
holidays/countries/canada.pytests/countries/test_canada.py
📚 Learning: 2025-06-16T11:42:28.293Z
Learnt from: PPsyrius
PR: vacanza/holidays#2638
File: holidays/countries/svalbard_and_jan_mayen.py:1-12
Timestamp: 2025-06-16T11:42:28.293Z
Learning: In the holidays library codebase, country implementation files in holidays/countries/ follow a standard convention of NOT having module-level docstrings. They start with the license header comment block, followed by imports, then class definitions. This is consistent across all country implementations like austria.py, belgium.py, canada.py, etc.
Applied to files:
holidays/countries/canada.py
📚 Learning: 2025-06-16T12:28:31.641Z
Learnt from: PPsyrius
PR: vacanza/holidays#2632
File: holidays/countries/solomon_islands.py:95-98
Timestamp: 2025-06-16T12:28:31.641Z
Learning: Library-wide holiday patterns and their optimizations should be handled at the base class level (like InternationalHolidays) rather than documenting workarounds in individual country modules. This maintains separation of concerns and avoids documentation duplication.
Applied to files:
holidays/countries/canada.py
📚 Learning: 2025-07-09T20:27:37.760Z
Learnt from: KJhellico
PR: vacanza/holidays#2623
File: holidays/countries/christmas_island.py:110-112
Timestamp: 2025-07-09T20:27:37.760Z
Learning: In Christmas Island, ANZAC Day (April 25) follows the same observed holiday rules as other holidays, using the SAT_SUN_TO_NEXT_MON rule to move to Monday when it falls on a weekend. The implementation correctly uses `_add_observed` wrapper around `_add_anzac_day`.
Applied to files:
holidays/countries/canada.py
📚 Learning: 2025-03-05T02:35:03.298Z
Learnt from: PPsyrius
PR: vacanza/holidays#2323
File: holidays/countries/macau.py:278-377
Timestamp: 2025-03-05T02:35:03.298Z
Learning: For Macau holiday implementations, it's preferable to maintain separate methods for different holiday categories (MANDATORY, GOVERNMENT, PUBLIC) as they are based on different sets of laws, making the code easier to maintain despite having multiple year-based conditionals.
Applied to files:
holidays/countries/canada.py
📚 Learning: 2025-08-03T13:48:11.910Z
Learnt from: KJhellico
PR: vacanza/holidays#2777
File: holidays/countries/gambia.py:120-122
Timestamp: 2025-08-03T13:48:11.910Z
Learning: When reviewing holiday implementations in the holidays library, defer to the maintainers' choice of start years for specific holiday policies, as they likely have access to more reliable primary sources and official documentation than what can be found through web searches.
Applied to files:
holidays/countries/canada.py
📚 Learning: 2025-06-18T10:58:28.058Z
Learnt from: PPsyrius
PR: vacanza/holidays#2642
File: holidays/countries/france.py:184-206
Timestamp: 2025-06-18T10:58:28.058Z
Learning: In the holidays library France implementation, creating shared private methods between subdivision-specific holiday population methods (like _populate_subdiv_57_public_holidays and _populate_subdiv_6ae_public_holidays) is not supported by the current framework architecture, so duplicate code between functionally identical subdivision methods should be left as-is.
Applied to files:
holidays/countries/canada.py
📚 Learning: 2025-06-18T10:07:58.780Z
Learnt from: PPsyrius
PR: vacanza/holidays#2642
File: holidays/countries/french_southern_territories.py:41-44
Timestamp: 2025-06-18T10:07:58.780Z
Learning: Territorial holiday classes that inherit from parent countries (like HolidaysAX from Finland, HolidaysSJ from Norway, HolidaysTF from France) follow a standard pattern of silently overriding self.subdiv in their _populate_public_holidays() method without validation, as this ensures they always use the correct subdivision code for their territory regardless of user input.
Applied to files:
holidays/countries/canada.pytests/countries/test_canada.py
📚 Learning: 2025-06-06T14:40:31.932Z
Learnt from: KJhellico
PR: vacanza/holidays#2593
File: holidays/countries/senegal.py:66-110
Timestamp: 2025-06-06T14:40:31.932Z
Learning: In the holidays library, within the _populate_public_holidays method, holidays should be arranged by calendar type (Islamic holidays first, then Gregorian holidays) without additional type grouping comments. The organization by calendar type is sufficient and follows the project's established conventions.
Applied to files:
holidays/countries/canada.py
📚 Learning: 2025-06-18T10:18:59.447Z
Learnt from: PPsyrius
PR: vacanza/holidays#2642
File: holidays/countries/france.py:178-182
Timestamp: 2025-06-18T10:18:59.447Z
Learning: In the France holidays implementation, deprecated subdivision names like "Alsace-Moselle" and "Saint-Barthélémy" are handled through explicit conditionals in _populate_public_holidays() that map them to their corresponding new subdivision-specific holiday population methods, providing backward compatibility while users transition to the new ISO codes.
Applied to files:
holidays/countries/canada.py
📚 Learning: 2025-06-18T10:21:01.376Z
Learnt from: PPsyrius
PR: vacanza/holidays#2642
File: holidays/countries/france.py:300-319
Timestamp: 2025-06-18T10:21:01.376Z
Learning: In the France holidays implementation, legislative years for holiday changes should be hard-coded rather than extracted into constants, as this maintains consistency with the existing codebase pattern and provides historical accuracy for specific legislative acts.
Applied to files:
holidays/countries/canada.py
📚 Learning: 2025-05-10T04:32:15.760Z
Learnt from: PPsyrius
PR: vacanza/holidays#2537
File: holidays/countries/finland.py:0-0
Timestamp: 2025-05-10T04:32:15.760Z
Learning: In the holidays package, detailed historical context and additional information should be added as comments at the method level or above conditional blocks, while comments directly above tr() function calls should only contain the holiday name itself (e.g., "# Independence Day.").
Applied to files:
holidays/countries/canada.py
📚 Learning: 2025-05-06T21:07:11.577Z
Learnt from: KJhellico
PR: vacanza/holidays#2530
File: tests/countries/test_andorra.py:23-28
Timestamp: 2025-05-06T21:07:11.577Z
Learning: In the holidays project, test methods for country holidays follow a standard form where year ranges are explicitly recreated in each test method rather than being stored as class variables, to maintain consistency across all country tests.
Applied to files:
tests/countries/test_canada.py
📚 Learning: 2025-04-05T04:47:27.213Z
Learnt from: PPsyrius
PR: vacanza/holidays#2416
File: tests/countries/test_turkmenistan.py:52-64
Timestamp: 2025-04-05T04:47:27.213Z
Learning: For holiday tests in the vacanza/holidays project, structure tests by individual holidays rather than by years. Each test method should focus on a specific holiday and test it across multiple years (from start_year through 2050) using helper methods like `assertHolidayName`. For fixed holidays, use generators like `(f"{year}-01-01" for year in range(1991, 2051))`. For movable holidays, specify individual dates for specific years followed by a range check.
Applied to files:
tests/countries/test_canada.py
📚 Learning: 2025-07-09T21:16:35.145Z
Learnt from: KJhellico
PR: vacanza/holidays#2623
File: tests/countries/test_christmas_island.py:136-146
Timestamp: 2025-07-09T21:16:35.145Z
Learning: In Christmas Island's holiday implementation, the test_christmas_day method cannot use assertNoNonObservedHoliday because in some years observed Christmas Day overlaps with Boxing Day when both holidays are moved due to weekend conflicts, causing the standard non-observed holiday check to fail inappropriately.
Applied to files:
tests/countries/test_canada.py
📚 Learning: 2025-04-05T06:49:06.217Z
Learnt from: PPsyrius
PR: vacanza/holidays#2386
File: tests/countries/test_nepal.py:499-536
Timestamp: 2025-04-05T06:49:06.217Z
Learning: In the holidays project, test files follow a dual testing approach: individual methods test specific holidays across multiple years, while comprehensive year-specific tests (e.g., `test_2025`) verify all holidays for a specific year in a single assertion. Both approaches serve different testing purposes and complement each other.
Applied to files:
tests/countries/test_canada.py
📚 Learning: 2025-04-04T10:52:41.546Z
Learnt from: KJhellico
PR: vacanza/holidays#2398
File: holidays/countries/guinea.py:106-110
Timestamp: 2025-04-04T10:52:41.546Z
Learning: In the Guinea holidays implementation, observed Eid al-Fitr cases are properly covered by the test_eid_al_fitr_day() method, which tests both the regular holiday dates and the observed dates when the holiday falls on a non-working day (for years >= 2023).
Applied to files:
tests/countries/test_canada.py
🧬 Code Graph Analysis (2)
holidays/countries/canada.py (1)
holidays/observed_holiday_base.py (1)
_add_observed(144-196)
tests/countries/test_canada.py (1)
tests/common.py (3)
assertHolidayName(195-199)assertNoHolidayName(273-275)assertNoNonObservedHoliday(248-250)
⏰ Context from checks skipped due to timeout of 300000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (1)
- GitHub Check: Test Python 3.13 on windows-latest
🔇 Additional comments (5)
holidays/countries/canada.py (2)
49-49: Reference for MB NTR added — LGTMGood addition of a stable, archived reference specific to Manitoba’s Bill 4.
281-285: MB NTR observed-in-lieu applied correctly (from 2024)Wrapping Sep 30 with _add_observed for Manitoba aligns with MB general holiday rules (Mon shift when on weekend). Placement before Thanksgiving also matches existing ordering.
tests/countries/test_canada.py (3)
273-280: Per-subdivision start years map — clear and extensibleThe subdiv_start_years mapping (with MB: 2024) keeps the assertions readable and future-proof.
282-287: Use of walrus operator for local start_year — concise and finePython 3.8+ is standard here; this improves readability without sacrificing clarity.
298-303: AB NTR moved to OPTIONAL — assertions look correctThe checks target AB’s optional calendar (start 2021) and exclude pre-2021; consistent with implementation.
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Proposed change
Update Canada holidays: add National Day for Truth and Reconciliation in Manitoba (since 2024).
Type of change
holidaysfunctionality in general)Checklist
make checklocally; all checks and tests passed.