chore: import upstream snapshot with attribution

test/python/testdatabase/testsqlite.py

@@ -0,0 +1,73 @@
+"""
+SQLite module tests
+"""
+
+from txtai.embeddings import Embeddings
+
+from .testrdbms import Common
+
+
+# pylint: disable=R0904
+class TestSQLite(Common.TestRDBMS):
+    """
+    Embeddings with content stored in SQLite tests.
+    """
+
+    @classmethod
+    def setUpClass(cls):
+        """
+        Initialize test data.
+        """
+
+        cls.data = [
+            "US tops 5 million confirmed virus cases",
+            "Canada's last fully intact ice shelf has suddenly collapsed, forming a Manhattan-sized iceberg",
+            "Beijing mobilises invasion craft along coast as Taiwan tensions escalate",
+            "The National Park Service warns against sacrificing slower friends in a bear attack",
+            "Maine man wins $1M from $25 lottery ticket",
+            "Make huge profits without work, earn up to $100,000 a day",
+        ]
+
+        # Content backend
+        cls.backend = "sqlite"
+
+        # Create embeddings model, backed by sentence-transformers & transformers
+        cls.embeddings = Embeddings({"path": "sentence-transformers/nli-mpnet-base-v2", "content": cls.backend})
+
+    @classmethod
+    def tearDownClass(cls):
+        """
+        Cleanup data.
+        """
+
+        if cls.embeddings:
+            cls.embeddings.close()
+
+    def testFunction(self):
+        """
+        Test custom functions
+        """
+
+        embeddings = Embeddings(
+            {
+                "path": "sentence-transformers/nli-mpnet-base-v2",
+                "content": self.backend,
+                "functions": [{"name": "textlength", "function": "testdatabase.testsqlite.length"}],
+            }
+        )
+
+        # Create an index for the list of text
+        embeddings.index([(uid, text, None) for uid, text in enumerate(self.data)])
+
+        # Search for best match
+        result = embeddings.search("select textlength(text) length from txtai where id = 0", 1)[0]
+
+        self.assertEqual(int(result["length"]), 39)
+
+
+def length(text):
+    """
+    Custom SQL function.
+    """
+
+    return len(text)