Swift: Add test and accept output

Author: MathiasVP

swift/ql/test/extractor-tests/types/ThrowingAndAsync.expected

@@ -0,0 +1,4 @@
+| types.swift:24:1:26:1 | throwingFunc | () throws -> Int | throws |
+| types.swift:28:1:28:36 | asyncFunction | (Int) async -> () | async |
+| types.swift:30:1:30:54 | throwingAndAsyncFunction | (Int) async throws -> () | async |
+| types.swift:30:1:30:54 | throwingAndAsyncFunction | (Int) async throws -> () | throws |

swift/ql/test/extractor-tests/types/ThrowingAndAsync.ql

@@ -0,0 +1,12 @@
+import codeql.swift.elements
+
+from FuncDecl f, AnyFunctionType t, string s
+where
+  f.getInterfaceType() = t and
+  f.getLocation().getFile().getName().matches("%swift/ql/test%") and
+  (
+    t.isAsync() and s = "async"
+    or
+    t.isThrowing() and s = "throws"
+  )
+select f, t, s