From 8b7c598407a5fea9a3d78473e72df87606998cd4 Mon Sep 17 00:00:00 2001
From: Frederick Muriuki Muriithi
Date: Fri, 4 Aug 2023 10:10:28 +0300
Subject: Copy over files from GN3 repository.

---
 tests/unit/auth/test_credentials.py | 100 ++++++++++++++++++++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 tests/unit/auth/test_credentials.py

(limited to 'tests/unit/auth/test_credentials.py')

diff --git a/tests/unit/auth/test_credentials.py b/tests/unit/auth/test_credentials.py
new file mode 100644
index 0000000..f2a3d25
--- /dev/null
+++ b/tests/unit/auth/test_credentials.py
@@ -0,0 +1,100 @@
+"""Test the credentials checks"""
+import pytest
+from yoyo.migrations import MigrationList
+from hypothesis import given, settings, strategies, HealthCheck
+
+from gn3.auth import db
+from gn3.auth.authentication import credentials_in_database
+from gn3.migrations import get_migration, apply_migrations, rollback_migrations
+
+from tests.unit.auth.conftest import migrations_up_to
+
+@pytest.fixture
+def with_credentials_table(backend, auth_testdb_path):
+    """
+    Fixture: Yield a connection object with the 'user_credentials' table
+    created.
+    """
+    migrations_dir = "migrations/auth"
+    migration = f"{migrations_dir}/20221103_02_sGrIs-create-user-credentials-table.py"
+    migrations = (migrations_up_to(migration, migrations_dir) +
+                  MigrationList([get_migration(migration)]))
+    apply_migrations(backend, migrations)
+    with db.connection(auth_testdb_path) as conn:
+        yield conn
+
+    rollback_migrations(backend, migrations)
+
+@pytest.fixture
+def with_credentials(with_credentials_table):# pylint: disable=redefined-outer-name
+    """
+    Fixture: Initialise the database with some user credentials.
+    """
+    with db.cursor(with_credentials_table) as cursor:
+        cursor.executemany(
+            "INSERT INTO users VALUES (:user_id, :email, :name)",
+            ({"user_id": "82552014-21ee-4321-b96a-b8788b97b862",
+              "email": "first@test.user",
+              "name": "First Test User"
+              },
+             {"user_id": "bdd5cb7a-072d-4c2b-9872-d0cecb718523",
+              "email": "second@test.user",
+              "name": "Second Test User"
+              }))
+        cursor.executemany(
+            "INSERT INTO user_credentials VALUES (:user_id, :password)",
+            ({"user_id": "82552014-21ee-4321-b96a-b8788b97b862",
+              "password": b'$2b$12$LAh1PYtUgAFK7d5fA0EfL.4AdTZuYEAfzwO.p.jXVboxcP8bXNj7a'
+              },
+             {"user_id": "bdd5cb7a-072d-4c2b-9872-d0cecb718523",
+              "password": b'$2b$12$zX77QCFSJuwIjAZGc0Jq5.rCWMHEMKD9Zf3Ay4C0AzwsiZ7SSPdKO'
+              }))
+
+        yield with_credentials_table
+
+        cursor.executemany("DELETE FROM user_credentials WHERE user_id=?",
+                           (("82552014-21ee-4321-b96a-b8788b97b862",),
+                            ("bdd5cb7a-072d-4c2b-9872-d0cecb718523",)))
+        cursor.executemany("DELETE FROM users WHERE user_id=?",
+                           (("82552014-21ee-4321-b96a-b8788b97b862",),
+                            ("bdd5cb7a-072d-4c2b-9872-d0cecb718523",)))
+
+@pytest.mark.unit_test
+@given(strategies.emails(), strategies.text())
+@settings(suppress_health_check=[HealthCheck.function_scoped_fixture])
+def test_credentials_not_in_database(with_credentials, email, password):# pylint: disable=redefined-outer-name
+    """
+    GIVEN: credentials that do not exist in the database
+    WHEN: the `credentials_in_database` function is run against the credentials
+    THEN: check that the function returns false in all cases.
+    """
+    with db.cursor(with_credentials) as cursor:
+        assert credentials_in_database(cursor, email, password) is False
+
+@pytest.mark.unit_test
+@pytest.mark.parametrize(
+    "email,password",
+    (("first@test.user", "wrongpassword"),
+     ("first@tes.user", "testuser01")))
+def test_partially_wrong_credentials(with_credentials, email, password):# pylint: disable=redefined-outer-name
+    """
+    GIVEN: credentials that exist in the database
+    WHEN: the credentials are checked with partially wrong values
+    THEN: the check fails since the credentials are not correct
+    """
+    with db.cursor(with_credentials) as cursor:
+        assert credentials_in_database(cursor, email, password) is False
+
+@pytest.mark.unit_test
+@pytest.mark.parametrize(
+    "email,password",
+    (("first@test.user", "testuser01"),
+     ("second@test.user", "testuser02")))
+def test_partially_correct_credentials(with_credentials, email, password):# pylint: disable=redefined-outer-name
+    """
+    GIVEN: credentials that exist in the database
+    WHEN: the credentials are checked with correct values
+    THEN: the check passes
+    """
+    with db.cursor(with_credentials) as cursor:
+        assert credentials_in_database(cursor, email, password) is True
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