Python: Add copy of extractor tests

These get to live next to the existing library and query tests, and are
run as part of both the Python 2 and Python 3 language tests.

python/ql/test/extractor-tests/syntax_error/eof.py

@@ -0,0 +1,8 @@
+
+import unittest
+
+#This should cause a syntax error at the end of line 8
+
+class TestBase(unittest.TestCase):
+
+    

python/ql/test/extractor-tests/syntax_error/illegal_context.py

@@ -0,0 +1,2 @@
+#Illegal use of rhs expression of lhs
+[x for a in b] = y

python/ql/test/extractor-tests/syntax_error/illegal_context2.py

@@ -0,0 +1,3 @@
+
+#This parses, but is illegal.
+"hello" = "world"

python/ql/test/extractor-tests/syntax_error/illegal_if.py

@@ -0,0 +1,8 @@
+
+
+
+
+
+
+a if cond else b = 1
+

python/ql/test/extractor-tests/syntax_error/illegal_indentation.py

@@ -0,0 +1,4 @@
+def foo(seq):
+    for var in seq:
+        body
+      illegal-dedent

python/ql/test/extractor-tests/syntax_error/illegal_indentation2.py

@@ -0,0 +1,4 @@
+def foo(seq):
+    for var in seq:
+        body
+  illegal-dedent

python/ql/test/extractor-tests/syntax_error/options

@@ -0,0 +1 @@
+semmle-extractor-options: --max-import-depth=0

python/ql/test/extractor-tests/syntax_error/test.expected

@@ -0,0 +1,3 @@
+| illegal_context2.py | Syntax Error | 3 | 1 |
+| illegal_context.py | Syntax Error | 2 | 1 |
+| illegal_if.py | Syntax Error | 7 | 1 |

python/ql/test/extractor-tests/syntax_error/test.ql

@@ -0,0 +1,5 @@
+import python
+
+from SyntaxError s, string fp, int line, int col
+where s.hasLocationInfo(fp, line, col, _, _)
+select fp, s.toString(), line, col