xfstestsdb: Make sure we clean up the xunits table

We need to delete xunit entries when their associated runs are deleted.

Signed-off-by: Anna Schumaker <anna@nowheycreamery.com>

tests/test_delete.py

@@ -5,6 +5,7 @@ import io
 import unittest
 import unittest.mock
 import xfstestsdb.delete
+import tests.xunit
 
 
 class TestDelete(unittest.TestCase):
@@ -42,6 +43,16 @@ class TestDelete(unittest.TestCase):
         cur = self.xfstestsdb.sql("SELECT COUNT(*) FROM tags")
         self.assertEqual(cur.fetchone()["COUNT(*)"], 0)
 
+    @unittest.mock.patch("sys.stdout", new_callable=io.StringIO)
+    def test_delete_xunit(self, mock_stdout: io.StringIO):
+        """Test the `xfstestsdb delete` command on a run with xunit files."""
+        self.xfstestsdb.run(["new", "/dev/test"])
+        self.xfstestsdb.run(["xunit", "read", "1", str(tests.xunit.XUNIT_1)])
+        self.xfstestsdb.run(["delete", "1"])
+
+        cur = self.xfstestsdb.sql("SELECT COUNT(*) FROM xunits")
+        self.assertEqual(cur.fetchone()["COUNT(*)"], 0)
+
     @unittest.mock.patch("sys.stderr", new_callable=io.StringIO)
     def test_delete_error(self, mock_stderr: io.StringIO):
         """Test the `xfstestsdb delete` command with invalid input."""

xfstestsdb/xfstestsdb.sql

@@ -58,6 +58,8 @@ CREATE TABLE xunits (
 	time INTEGER NOT NULL,
 	UNIQUE (runid, name),
 	FOREIGN KEY (runid) REFERENCES xfstests_runs (runid)
+		ON DELETE CASCADE
+		ON UPDATE CASCADE
 );
 
 CREATE VIEW xunits_view AS