Remove unnecessary project_id == creds_id check for vertex (#862)

pydantic_ai_slim/pydantic_ai/models/vertexai.py

@@ -128,11 +128,6 @@ async def ainit(self) -> None:
                 raise UserError(f'No project_id provided and none found in {creds_source}')
             project_id = creds_project_id
         else:
-            if creds_project_id is not None and self.project_id != creds_project_id:
-                raise UserError(
-                    f'The project_id you provided does not match the one from {creds_source}: '
-                    f'{self.project_id!r} != {creds_project_id!r}'
-                )
             project_id = self.project_id
 
         self._url = self.url_template.format(

tests/models/test_vertexai.py

@@ -92,30 +92,6 @@ async def test_init_right_project_id(tmp_path: Path, allow_model_requests: None)
     assert model.auth is not None
 
 
-async def test_init_service_account_wrong_project_id(tmp_path: Path, allow_model_requests: None):
-    service_account_path = tmp_path / 'service_account.json'
-    save_service_account(service_account_path, 'my-project-id')
-
-    model = VertexAIModel('gemini-1.5-flash', service_account_file=service_account_path, project_id='different')
-
-    with pytest.raises(UserError) as exc_info:
-        await model.ainit()
-    assert str(exc_info.value) == snapshot(
-        "The project_id you provided does not match the one from service account file: 'different' != 'my-project-id'"
-    )
-
-
-async def test_init_env_wrong_project_id(mocker: MockerFixture, allow_model_requests: None):
-    mocker.patch('pydantic_ai.models.vertexai.google.auth.default', return_value=(NoOpCredentials(), 'my-project-id'))
-    model = VertexAIModel('gemini-1.5-flash', project_id='different')
-
-    with pytest.raises(UserError) as exc_info:
-        await model.ainit()
-    assert str(exc_info.value) == snapshot(
-        "The project_id you provided does not match the one from `google.auth.default()`: 'different' != 'my-project-id'"
-    )
-
-
 async def test_init_env_no_project_id(mocker: MockerFixture, allow_model_requests: None):
     mocker.patch(
         'pydantic_ai.models.vertexai.google.auth.default',