fix(yogini): use Goel Table I order and birth balance (BUG-1262, upstream 1918ffaf)

tests/test_yogini_seed_profile.py

@@ -1,23 +1,59 @@
-from datetime import datetime
+from datetime import datetime, timedelta
 
-from scripts.yogini_dasha import calculate_yogini_dasha
+import pytest
+
+from scripts.yogini_dasha import YOGINI_SEQUENCE, calculate_yogini_dasha
 
 
-def test_yogini_uses_moon_nakshatra_plus_three_seed_when_available() -> None:
+def test_yogini_classical_sequence_and_balance():
+    # Goel Classical chapter Table I: lord and years, not the older Maya/Jaya/Rati list.
+    assert [(row['name'], row['planet'], row['years']) for row in YOGINI_SEQUENCE] == [
+        ('Mangala', 'Moon', 1),
+        ('Pingala', 'Sun', 2),
+        ('Dhanya', 'Jupiter', 3),
+        ('Bhramari', 'Mars', 4),
+        ('Bhadrika', 'Mercury', 5),
+        ('Ulka', 'Saturn', 6),
+        ('Siddha', 'Venus', 7),
+        ('Sankata', 'Rahu', 8),
+    ]
+    birth = datetime(2000, 1, 1, 12)
+    # Mid-Pushya (eighth nakshatra): remainder 3 is Dhanya, half of 3 years left.
+    result = calculate_yogini_dasha({
+        'birth_datetime': birth,
+        'moon_longitude': 100.0,
+        'as_of': '2000-01-02',
+        'dasha_year_days': 360,
+    })
+    assert result['starting_planet'] == 'Jupiter'
+    assert result['starting_yogini'] == 'Dhanya'
+    assert result['birth_balance_years'] == pytest.approx(1.5)
+    assert datetime.fromisoformat(result['major'][0]['end_date']) == birth + timedelta(days=540)
+    assert result['major'][0]['years'] == pytest.approx(1.5)
+    assert result['current']['planet'] == 'Jupiter'
+    assert result['major'][1]['planet'] == 'Mars'
+    assert all(a['end_date'] == b['start_date'] for a, b in zip(result['major'], result['major'][1:]))
+
+
+def test_yogini_no_invented_lagna_fallback_or_missing_balance():
+    # 原值: lagna-only input started at Maya via legacy_lagna_rashi_compatibility
+    # 新值: status blocked，major 为空
+    # 原因: BUG-1262，没有月亮黄经就不能编一段从出生起算的满周期
     result = calculate_yogini_dasha({
         'lagna_rashi_index': 0,
         'moon_nakshatra_index': 0,
-        'birth_datetime': datetime(1990, 1, 1),
+        'birth_datetime': datetime(2000, 1, 1),
     })
-    assert result['starting_yogini'] == 'Rati'
-    assert result['starting_planet'] == 'Mercury'
-    assert result['seed_method'] == 'moon_nakshatra_plus_3_mod_8'
+    assert result['status'] == 'blocked'
+    assert result['major'] == []
 
 
-def test_yogini_keeps_legacy_seed_only_without_moon_nakshatra() -> None:
-    result = calculate_yogini_dasha({
-        'lagna_rashi_index': 0,
-        'birth_datetime': datetime(1990, 1, 1),
-    })
-    assert result['starting_yogini'] == 'Maya'
-    assert result['seed_method'] == 'legacy_lagna_rashi_compatibility'
+def test_yogini_explicit_reference_controls_current_cycle():
+    args = {'birth_datetime': '2000-01-01', 'moon_longitude': 0.0, 'dasha_year_days': 360}
+    first = calculate_yogini_dasha(dict(args, as_of='2000-01-02'))
+    later = calculate_yogini_dasha(dict(args, as_of='2040-01-01'))
+    assert first['current']['cycle_number'] == 1
+    assert later['current']['cycle_number'] == 2
+    # Ashwini start: (0 + 3) % 8 is Bhramari / Mars, and the balance is the whole period.
+    assert first['starting_planet'] == 'Mars'
+    assert first['birth_balance_years'] == pytest.approx(4.0)