Add test and update the refs.

Author: Thirumalai-Shaktivel

tests/parser/with1.py

@@ -18,3 +18,6 @@
 with a, b, c as y, \
             z:
     pass
+
+with tag('x'):
+    pass

tests/reference/ast_new-with1-6c88c0f.json

@@ -2,11 +2,11 @@
     "basename": "ast_new-with1-6c88c0f",
     "cmd": "lpython --show-ast --new-parser --no-color {infile} -o {outfile}",
     "infile": "tests/parser/with1.py",
-    "infile_hash": "797654839a99953c54122270601aae6c1b1cbfe590860d2bedec8d05",
+    "infile_hash": "41fb846455ede2c9626aeb5bf0684c65fb9a5483276df4838d8cfbf4",
     "outfile": null,
     "outfile_hash": null,
     "stdout": "ast_new-with1-6c88c0f.stdout",
-    "stdout_hash": "64d9bb656a0cbfeeea99504cdc0b86626f38797281a540fe7a853e1a",
+    "stdout_hash": "f87b5ff21f034fd3a14dca190406b993e681d64181ddf1a0b3e41fcd",
     "stderr": null,
     "stderr_hash": null,
     "returncode": 0

tests/reference/ast_new-with1-6c88c0f.stdout

@@ -1 +1 @@
-(Module [(With [((Call (Name A Load) [] []) (Name a Store)) ((Call (Name B Load) [] []) (Name b Store))] [(Expr (Call (Name f Load) [(Name a Load) (Name b Load)] []))] ()) (With [((Call (Name A Load) [] []) (Name a Store)) ((Call (Name B Load) [(Name a Load)] []) (Name b Store)) ((Call (Name C Load) [(Name a Load) (Name b Load)] []) (Name c Store))] [(Expr (Call (Name f Load) [(Name a Load) (Name c Load)] []))] ()) (With [((Call (Name open Load) [(ConstantStr "examples/expr2.py" ()) (ConstantStr "r" ())] []) (Name file Store))] [(Assign [(Name x Store)] (Call (Attribute (Name file Load) read Load) [] []) ())] ()) (With [((Call (Name open Load) [(ConstantEllipsis ())] []) (Name f Store))] [(Expr (ConstantEllipsis ()))] ()) (With [((Call (Name open Load) [(ConstantStr "examples/expr2.py" ()) (ConstantStr "r" ())] []) (Name file Store))] [(Assign [(Name x Store)] (Call (Attribute (Name file Load) read Load) [] []) ())] ()) (With [((Tuple [(Name a Load) (Name b Load) (Name c Load)] Load) (Tuple [(Name y Load) (Name z Load)] Store))] [(Pass)] ())] [])
+(Module [(With [((Call (Name A Load) [] []) (Name a Store)) ((Call (Name B Load) [] []) (Name b Store))] [(Expr (Call (Name f Load) [(Name a Load) (Name b Load)] []))] ()) (With [((Call (Name A Load) [] []) (Name a Store)) ((Call (Name B Load) [(Name a Load)] []) (Name b Store)) ((Call (Name C Load) [(Name a Load) (Name b Load)] []) (Name c Store))] [(Expr (Call (Name f Load) [(Name a Load) (Name c Load)] []))] ()) (With [((Call (Name open Load) [(ConstantStr "examples/expr2.py" ()) (ConstantStr "r" ())] []) (Name file Store))] [(Assign [(Name x Store)] (Call (Attribute (Name file Load) read Load) [] []) ())] ()) (With [((Call (Name open Load) [(ConstantEllipsis ())] []) (Name f Store))] [(Expr (ConstantEllipsis ()))] ()) (With [((Call (Name open Load) [(ConstantStr "examples/expr2.py" ()) (ConstantStr "r" ())] []) (Name file Store))] [(Assign [(Name x Store)] (Call (Attribute (Name file Load) read Load) [] []) ())] ()) (With [((Tuple [(Name a Load) (Name b Load) (Name c Load)] Load) (Tuple [(Name y Load) (Name z Load)] Store))] [(Pass)] ()) (With [((Call (Name tag Load) [(ConstantStr "x" ())] []) ())] [(Pass)] ())] [])