Python: Add taint-tests for SQLAlchemy

python/ql/test/experimental/library-tests/frameworks/sqlalchemy/InlineTaintTest.expected

@@ -0,0 +1,3 @@
+argumentToEnsureNotTaintedNotMarkedAsSpurious
+untaintedArgumentToEnsureTaintedNotMarkedAsMissing
+failures

python/ql/test/experimental/library-tests/frameworks/sqlalchemy/InlineTaintTest.ql

@@ -0,0 +1,2 @@
+import experimental.meta.InlineTaintTest
+import experimental.semmle.python.frameworks.SqlAlchemy

python/ql/test/experimental/library-tests/frameworks/sqlalchemy/taint_test.py

@@ -0,0 +1,12 @@
+import sqlalchemy
+
+def test_taint():
+    ts = TAINTED_STRING
+
+    ensure_tainted(
+        ts, # $ tainted
+        sqlalchemy.text(ts), # $ MISSING: tainted
+        sqlalchemy.sql.text(ts),# $ MISSING: tainted
+        sqlalchemy.sql.expression.text(ts),# $ MISSING: tainted
+        sqlalchemy.sql.expression.TextClause(ts),# $ MISSING: tainted
+    )