add PackageSource SQLAlchemy ORM model

Signed-off-by: Kevin Morris <kevr@0cost.org>

test/test_package_source.py

@@ -0,0 +1,44 @@
+import pytest
+
+from sqlalchemy.exc import IntegrityError
+
+from aurweb.db import create, query, rollback
+from aurweb.models.account_type import AccountType
+from aurweb.models.package import Package
+from aurweb.models.package_base import PackageBase
+from aurweb.models.package_source import PackageSource
+from aurweb.models.user import User
+from aurweb.testing import setup_test_db
+
+user = pkgbase = package = None
+
+
+@pytest.fixture(autouse=True)
+def setup():
+    global user, pkgbase, package
+
+    setup_test_db("PackageSources", "Packages", "PackageBases", "Users")
+
+    account_type = query(AccountType,
+                         AccountType.AccountType == "User").first()
+    user = create(User, Username="test", Email="test@example.org",
+                  RealName="Test User", Passwd="testPassword",
+                  AccountType=account_type)
+    pkgbase = create(PackageBase,
+                     Name="test-package",
+                     Maintainer=user)
+    package = create(Package, PackageBase=pkgbase, Name="test-package")
+
+
+def test_package_source():
+    pkgsource = create(PackageSource, Package=package)
+    assert pkgsource.Package == package
+    # By default, PackageSources.Source assigns the string '/dev/null'.
+    assert pkgsource.Source == "/dev/null"
+    assert pkgsource.SourceArch is None
+
+
+def test_package_source_null_package_raises_exception():
+    with pytest.raises(IntegrityError):
+        create(PackageSource)
+    rollback()