Python: Add QL test for the new syntax

Author: tausbn

python/ql/test/3/extractor-tests/lazy-imports/test.expected

@@ -0,0 +1,7 @@
+| 2 | Import | lazy |
+| 3 | Import | lazy |
+| 4 | Import | lazy |
+| 5 | Import | lazy |
+| 6 | Import | lazy |
+| 9 | Import | normal |
+| 10 | Import | normal |

python/ql/test/3/extractor-tests/lazy-imports/test.py

@@ -0,0 +1,10 @@
+# Lazy imports (PEP 810)
+lazy import a
+lazy from b import c
+lazy from d import e as f
+lazy import g.h as i
+lazy from ..j import k
+
+# Non-lazy imports
+import x
+from y import z

python/ql/test/3/extractor-tests/lazy-imports/test.ql

@@ -0,0 +1,7 @@
+import python
+
+string lazy(Import imp) { if imp.isLazy() then result = "lazy" else result = "normal" }
+
+from Import imp
+where imp.getLocation().getFile().getShortName() = "test.py"
+select imp.getLocation().getStartLine(), imp.toString(), lazy(imp)