Fix a bunch of test broken by python 3.10 (#10404)

Python 3.10 changes a bunch of parser error messages. This commit
introduces the version>= argument to [out] sections of tests, which
allows testing against the new messages on newer python versions.

Author: freundTech

mypy/test/data.py

@@ -104,19 +104,43 @@ def parse_test_case(case: 'DataDrivenTestCase') -> None:
             full = join(base_path, m.group(1))
             deleted_paths.setdefault(num, set()).add(full)
         elif re.match(r'out[0-9]*$', item.id):
-            if item.arg == 'skip-path-normalization':
-                normalize_output = False
-
-            tmp_output = [expand_variables(line) for line in item.data]
-            if os.path.sep == '\\' and normalize_output:
-                tmp_output = [fix_win_path(line) for line in tmp_output]
-            if item.id == 'out' or item.id == 'out1':
-                output = tmp_output
+            if item.arg is None:
+                args = []
             else:
-                passnum = int(item.id[len('out'):])
-                assert passnum > 1
-                output2[passnum] = tmp_output
-            out_section_missing = False
+                args = item.arg.split(",")
+
+            version_check = True
+            for arg in args:
+                if arg == 'skip-path-normalization':
+                    normalize_output = False
+                if arg.startswith("version"):
+                    if arg[7:9] != ">=":
+                        raise ValueError(
+                            "{}, line {}: Only >= version checks are currently supported".format(
+                                case.file, item.line
+                            )
+                        )
+                    version_str = arg[9:]
+                    try:
+                        version = tuple(int(x) for x in version_str.split("."))
+                    except ValueError:
+                        raise ValueError(
+                            '{}, line {}: "{}" is not a valid python version'.format(
+                                case.file, item.line, version_str))
+                    if not sys.version_info >= version:
+                        version_check = False
+
+            if version_check:
+                tmp_output = [expand_variables(line) for line in item.data]
+                if os.path.sep == '\\' and normalize_output:
+                    tmp_output = [fix_win_path(line) for line in tmp_output]
+                if item.id == 'out' or item.id == 'out1':
+                    output = tmp_output
+                else:
+                    passnum = int(item.id[len('out'):])
+                    assert passnum > 1
+                    output2[passnum] = tmp_output
+                out_section_missing = False
         elif item.id == 'triggered' and item.arg is None:
             triggered = item.data
         else:

test-data/unit/check-errorcodes.test

@@ -31,7 +31,11 @@ class A:
 reveal_type(1) # N: Revealed type is "Literal[1]?"
 
 [case testErrorCodeSyntaxError]
-1 '' # E: invalid syntax  [syntax]
+1 ''
+[out]
+main:1: error: invalid syntax  [syntax]
+[out version>=3.10]
+main:1: error: invalid syntax. Perhaps you forgot a comma?  [syntax]
 
 [case testErrorCodeSyntaxError2]
 def f(): # E: Type signature has too many arguments  [syntax]

test-data/unit/cmdline.test

@@ -753,6 +753,9 @@ def foo(
 [out]
 a.py:1: error: unexpected EOF while parsing
 == Return code: 2
+[out version>=3.10]
+a.py:1: error: '(' was never closed
+== Return code: 2
 
 [case testParseErrorAnnots]
 # cmd: mypy a.py
@@ -1236,6 +1239,10 @@ x: str = 0
 pkg/x.py:1: error: invalid syntax
 Found 1 error in 1 file (errors prevented further checking)
 == Return code: 2
+[out version>=3.10]
+pkg/x.py:1: error: invalid syntax. Perhaps you forgot a comma?
+Found 1 error in 1 file (errors prevented further checking)
+== Return code: 2
 
 [case testCmdlinePackageAndFile]
 # cmd: mypy -p pkg file

test-data/unit/fine-grained-blockers.test

@@ -23,6 +23,12 @@ a.py:1: error: invalid syntax
 ==
 main:2: error: Missing positional argument "x" in call to "f"
 ==
+[out version>=3.10]
+==
+a.py:1: error: expected ':'
+==
+main:2: error: Missing positional argument "x" in call to "f"
+==
 
 [case testParseErrorShowSource]
 # flags: --pretty --show-error-codes
@@ -46,6 +52,16 @@ main:3: error: Missing positional argument "x" in call to "f"  [call-arg]
     a.f()
     ^
 ==
+[out version>=3.10]
+==
+a.py:1: error: expected ':'  [syntax]
+    def f(x: int) ->
+                   ^
+==
+main:3: error: Missing positional argument "x" in call to "f"  [call-arg]
+    a.f()
+    ^
+==
 
 [case testParseErrorMultipleTimes]
 import a
@@ -66,6 +82,13 @@ a.py:1: error: invalid syntax
 a.py:2: error: invalid syntax
 ==
 main:2: error: Missing positional argument "x" in call to "f"
+[out version>=3.10]
+==
+a.py:1: error: expected ':'
+==
+a.py:2: error: expected ':'
+==
+main:2: error: Missing positional argument "x" in call to "f"
 
 [case testSemanticAnalysisBlockingError]
 import a
@@ -105,6 +128,14 @@ a.py:1: error: invalid syntax
 ==
 main:3: error: Too many arguments for "f"
 main:5: error: Too many arguments for "f"
+[out version>=3.10]
+main:3: error: Too many arguments for "f"
+main:5: error: Too many arguments for "f"
+==
+a.py:1: error: expected ':'
+==
+main:3: error: Too many arguments for "f"
+main:5: error: Too many arguments for "f"
 
 [case testUpdateClassReferenceAcrossBlockingError]
 import a
@@ -125,6 +156,11 @@ class C:
 a.py:1: error: invalid syntax
 ==
 main:5: error: Missing positional argument "x" in call to "f" of "C"
+[out version>=3.10]
+==
+a.py:1: error: invalid syntax. Perhaps you forgot a comma?
+==
+main:5: error: Missing positional argument "x" in call to "f" of "C"
 
 [case testAddFileWithBlockingError]
 import a
@@ -140,6 +176,13 @@ main:1: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missin
 a.py:1: error: invalid syntax
 ==
 main:2: error: Too many arguments for "f"
+[out version>=3.10]
+main:1: error: Cannot find implementation or library stub for module named "a"
+main:1: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports
+==
+a.py:1: error: invalid syntax. Perhaps you forgot a comma?
+==
+main:2: error: Too many arguments for "f"
 
 [case testModifyTwoFilesOneWithBlockingError1]
 import a
@@ -216,6 +259,13 @@ a.py:1: error: invalid syntax
 a.py:1: error: invalid syntax
 ==
 a.py:2: error: Missing positional argument "x" in call to "f"
+[out version>=3.10]
+==
+a.py:1: error: invalid syntax. Perhaps you forgot a comma?
+==
+a.py:1: error: invalid syntax. Perhaps you forgot a comma?
+==
+a.py:2: error: Missing positional argument "x" in call to "f"
 
 [case testModifyTwoFilesIntroduceTwoBlockingErrors]
 import a
@@ -280,6 +330,13 @@ a.py:1: error: invalid syntax
 main:1: error: Cannot find implementation or library stub for module named "a"
 main:1: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports
 b.py:1: error: Cannot find implementation or library stub for module named "a"
+[out version>=3.10]
+==
+a.py:1: error: invalid syntax. Perhaps you forgot a comma?
+==
+main:1: error: Cannot find implementation or library stub for module named "a"
+main:1: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports
+b.py:1: error: Cannot find implementation or library stub for module named "a"
 
 [case testDeleteFileWithBlockingError-only_when_cache]
 -- Different cache/no-cache tests because:
@@ -301,6 +358,13 @@ a.py:1: error: invalid syntax
 b.py:1: error: Cannot find implementation or library stub for module named "a"
 b.py:1: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports
 main:1: error: Cannot find implementation or library stub for module named "a"
+[out version>=3.10]
+==
+a.py:1: error: invalid syntax. Perhaps you forgot a comma?
+==
+b.py:1: error: Cannot find implementation or library stub for module named "a"
+b.py:1: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports
+main:1: error: Cannot find implementation or library stub for module named "a"
 
 [case testModifyFileWhileBlockingErrorElsewhere]
 import a
@@ -324,6 +388,14 @@ a.py:1: error: invalid syntax
 ==
 b.py:2: error: Module has no attribute "f"
 b.py:3: error: "int" not callable
+[out version>=3.10]
+==
+a.py:1: error: invalid syntax. Perhaps you forgot a comma?
+==
+a.py:1: error: invalid syntax. Perhaps you forgot a comma?
+==
+b.py:2: error: Module has no attribute "f"
+b.py:3: error: "int" not callable
 
 [case testImportBringsAnotherFileWithBlockingError1]
 import a
@@ -339,6 +411,11 @@ def f() -> None: pass
 <ROOT>/test-data/unit/lib-stub/blocker.pyi:2: error: invalid syntax
 ==
 a.py:1: error: "int" not callable
+[out version>=3.10]
+==
+<ROOT>/test-data/unit/lib-stub/blocker.pyi:2: error: invalid syntax. Perhaps you forgot a comma?
+==
+a.py:1: error: "int" not callable
 
 [case testImportBringsAnotherFileWithSemanticAnalysisBlockingError]
 import a
@@ -413,6 +490,13 @@ a.py:1: error: invalid syntax
 <ROOT>/test-data/unit/lib-stub/blocker.pyi:2: error: invalid syntax
 ==
 a.py:2: error: "int" not callable
+[out version>=3.10]
+==
+a.py:1: error: invalid syntax. Perhaps you forgot a comma?
+==
+<ROOT>/test-data/unit/lib-stub/blocker.pyi:2: error: invalid syntax. Perhaps you forgot a comma?
+==
+a.py:2: error: "int" not callable
 
 [case testInitialBlocker]
 # cmd: mypy a.py b.py
@@ -431,6 +515,11 @@ a.py:1: error: invalid syntax
 ==
 b.py:2: error: Incompatible return value type (got "str", expected "int")
 ==
+[out version>=3.10]
+a.py:1: error: invalid syntax. Perhaps you forgot a comma?
+==
+b.py:2: error: Incompatible return value type (got "str", expected "int")
+==
 
 [case testDecodeErrorBlocker-posix]
 import a

test-data/unit/fine-grained-suggest.test

@@ -1019,6 +1019,11 @@ foo.py:4: error: unexpected EOF while parsing
 Command 'suggest' is only valid after a 'check' command (that produces no parse errors)
 ==
 foo.py:4: error: unexpected EOF while parsing
+[out version>=3.10]
+foo.py:4: error: '(' was never closed
+Command 'suggest' is only valid after a 'check' command (that produces no parse errors)
+==
+foo.py:4: error: '(' was never closed
 -- )
 
 [case testSuggestRefine]

test-data/unit/parse.test

@@ -932,16 +932,22 @@ MypyFile:1(
         NameExpr(z)))))
 
 [case testNotAsBinaryOp]
-x not y # E: invalid syntax
+x not y
 [out]
+main:1: error: invalid syntax
+[out version>=3.10]
+main:1: error: invalid syntax. Perhaps you forgot a comma?
 
 [case testNotIs]
 x not is y # E: invalid syntax
 [out]
 
 [case testBinaryNegAsBinaryOp]
-1 ~ 2 # E: invalid syntax
+1 ~ 2
 [out]
+main:1: error: invalid syntax
+[out version>=3.10]
+main:1: error: invalid syntax. Perhaps you forgot a comma?
 
 [case testDictionaryExpression]
 {}