feat: add RequestToPublish to ClassifiedAd with state management

tests/test_classified_ad.py

@@ -5,8 +5,12 @@ import pytest
 
 from domain.marketplace.classified_ad import ClassifiedAd
 from domain.marketplace.classified_ad_id import ClassifiedAdId
+from domain.marketplace.classified_ad_state import ClassifiedAdState
 from domain.marketplace.classified_ad_text import ClassifiedAdText
 from domain.marketplace.classified_ad_title import ClassifiedAdTitle
+from domain.marketplace.invalid_entity_state_exception import (
+    InvalidEntityStateException,
+)
 from domain.marketplace.price import Price
 from domain.marketplace.user_id import UserId
 
@@ -127,3 +131,91 @@ def test_classified_ad_title_validation():
             text=ClassifiedAdText(text="Text"),
             price=Price(amount=Decimal("10.00")),
         )
+
+
+def test_request_to_publish_sets_state_to_pending_review():
+    ad = ClassifiedAd(
+        id=ClassifiedAdId(value=uuid4()),
+        _ownerId=UserId(value=uuid4()),
+        title=ClassifiedAdTitle(title="Title"),
+        text=ClassifiedAdText(text="Text"),
+        price=Price(amount=Decimal("10.00")),
+    )
+
+    published = ad.request_to_publish()
+
+    assert published.state == ClassifiedAdState.PendingReview
+
+
+def test_request_to_publish_fails_when_title_empty():
+    ad = ClassifiedAd(
+        id=ClassifiedAdId(value=uuid4()),
+        _ownerId=UserId(value=uuid4()),
+        title=ClassifiedAdTitle(title=""),
+        text=ClassifiedAdText(text="Text"),
+        price=Price(amount=Decimal("10.00")),
+    )
+
+    with pytest.raises(InvalidEntityStateException) as exc_info:
+        ad.request_to_publish()
+
+    assert "title" in str(exc_info.value)
+
+
+def test_request_to_publish_fails_when_text_empty():
+    ad = ClassifiedAd(
+        id=ClassifiedAdId(value=uuid4()),
+        _ownerId=UserId(value=uuid4()),
+        title=ClassifiedAdTitle(title="Title"),
+        text=ClassifiedAdText(text=""),
+        price=Price(amount=Decimal("10.00")),
+    )
+
+    with pytest.raises(InvalidEntityStateException) as exc_info:
+        ad.request_to_publish()
+
+    assert "text" in str(exc_info.value)
+
+
+def test_request_to_publish_fails_when_price_is_zero():
+    ad = ClassifiedAd(
+        id=ClassifiedAdId(value=uuid4()),
+        _ownerId=UserId(value=uuid4()),
+        title=ClassifiedAdTitle(title="Title"),
+        text=ClassifiedAdText(text="Text"),
+    )
+
+    with pytest.raises(InvalidEntityStateException) as exc_info:
+        ad.request_to_publish()
+
+    assert "price" in str(exc_info.value)
+
+
+def test_request_to_publish_reports_all_errors():
+    ad = ClassifiedAd(
+        id=ClassifiedAdId(value=uuid4()),
+        _ownerId=UserId(value=uuid4()),
+        title=ClassifiedAdTitle(title=""),
+        text=ClassifiedAdText(text=""),
+    )
+
+    with pytest.raises(InvalidEntityStateException) as exc_info:
+        ad.request_to_publish()
+
+    assert "title" in str(exc_info.value)
+    assert "text" in str(exc_info.value)
+    assert "price" in str(exc_info.value)
+
+
+def test_request_to_publish_does_not_mutate_original():
+    ad = ClassifiedAd(
+        id=ClassifiedAdId(value=uuid4()),
+        _ownerId=UserId(value=uuid4()),
+        title=ClassifiedAdTitle(title="Title"),
+        text=ClassifiedAdText(text="Text"),
+        price=Price(amount=Decimal("10.00")),
+    )
+
+    ad.request_to_publish()
+
+    assert ad.state is None