Additional tests

Author: brianschubert

Lib/test/test_syntax.py

@@ -2225,14 +2225,24 @@
 Traceback (most recent call last):
 SyntaxError: Expected one or more names after 'import'
 
+# Missing comma between import clauses
+
 >>> import a b
 Traceback (most recent call last):
 SyntaxError: expected comma between import clauses
 
+>>> import a, b c
+Traceback (most recent call last):
+SyntaxError: expected comma between import clauses
+
 >>> import a.a as a b.b
 Traceback (most recent call last):
 SyntaxError: expected comma between import clauses
 
+>>> import a.a as a b.b as b
+Traceback (most recent call last):
+SyntaxError: expected comma between import clauses
+
 >>> from x import a b
 Traceback (most recent call last):
 SyntaxError: expected comma between import clauses
@@ -2241,6 +2251,22 @@
 Traceback (most recent call last):
 SyntaxError: expected comma between import clauses
 
+>>> from x import (a
+...                b)
+Traceback (most recent call last):
+SyntaxError: expected comma between import clauses
+
+>>> from x import (a as a
+...                b)
+Traceback (most recent call last):
+SyntaxError: expected comma between import clauses
+
+>>> from x import (a,
+...                b as b
+...                c)
+Traceback (most recent call last):
+SyntaxError: expected comma between import clauses
+
 >>> (): int
 Traceback (most recent call last):
 SyntaxError: only single target (not tuple) can be annotated
@@ -3521,6 +3547,40 @@ def test_ifexp_body_stmt_else_stmt(self):
         ]:
             self._check_error(f"x = {lhs_stmt} if 1 else {rhs_stmt}", msg)
 
+    def test_import_missing_comma(self):
+        self._check_error("import a.a b.b",
+                          "expected comma between import clauses",
+                          offset=8, end_offset=8 + len("a.a b.b"))
+        self._check_error(
+            """if 1:
+            from x import (
+                a,
+                b
+                c,
+            )
+            """,
+            errtext="expected comma between import clauses",
+            lineno=4,
+            end_lineno=5,
+            offset=17,
+            end_offset=18,
+        )
+        self._check_error(
+            """if 1:
+            from x import (
+                a,
+                b as b
+                c as c,
+            )
+            """,
+            errtext="expected comma between import clauses",
+            lineno=4,
+            end_lineno=5,
+            offset=22,
+            end_offset=18,
+        )
+
+
 
 class LazyImportRestrictionTestCase(SyntaxErrorTestCase):
     """Test syntax restrictions for lazy imports."""