MNT: remove unnecessary test deps + some refactoring (GH-2510)

[etc/vim.git] / tests / test_format.py

diff --git a/tests/test_format.py b/tests/test_format.py
index fc9678ad27cda3c0e6791f54c0bcf6858c24e5c6..a659382092ac7251ce6d9be97d09b856adc0a810 100644 (file)
--- a/tests/test_format.py
+++ b/tests/test_format.py
@@ -1,16 +1,17 @@
+from dataclasses import replace
+from typing import Any, Iterator
 from unittest.mock import patch
 
-import black
 import pytest
-from parameterized import parameterized
 
+import black
 from tests.util import (
-    BlackBaseTestCase,
-    fs,
     DEFAULT_MODE,
+    PY36_VERSIONS,
+    THIS_DIR,
+    assert_format,
     dump_to_stderr,
     read_data,
-    THIS_DIR,
 )
 
 SIMPLE_CASES = [
@@ -113,33 +114,121 @@ SOURCES = [
 ]
 
 
-class TestSimpleFormat(BlackBaseTestCase):
-    @parameterized.expand(SIMPLE_CASES_PY2)
-    @pytest.mark.python2
-    @patch("black.dump_to_file", dump_to_stderr)
-    def test_simple_format_py2(self, filename: str) -> None:
-        self.check_file(filename, DEFAULT_MODE)
-
-    @parameterized.expand(SIMPLE_CASES)
-    @patch("black.dump_to_file", dump_to_stderr)
-    def test_simple_format(self, filename: str) -> None:
-        self.check_file(filename, DEFAULT_MODE)
-
-    @parameterized.expand(EXPERIMENTAL_STRING_PROCESSING_CASES)
-    @patch("black.dump_to_file", dump_to_stderr)
-    def test_experimental_format(self, filename: str) -> None:
-        self.check_file(filename, black.Mode(experimental_string_processing=True))
-
-    @parameterized.expand(SOURCES)
-    @patch("black.dump_to_file", dump_to_stderr)
-    def test_source_is_formatted(self, filename: str) -> None:
-        path = THIS_DIR.parent / filename
-        self.check_file(str(path), DEFAULT_MODE, data=False)
-
-    def check_file(self, filename: str, mode: black.Mode, *, data: bool = True) -> None:
-        source, expected = read_data(filename, data=data)
-        actual = fs(source, mode=mode)
-        self.assertFormatEqual(expected, actual)
-        if source != actual:
-            black.assert_equivalent(source, actual)
-            black.assert_stable(source, actual, mode)
+@pytest.fixture(autouse=True)
+def patch_dump_to_file(request: Any) -> Iterator[None]:
+    with patch("black.dump_to_file", dump_to_stderr):
+        yield
+
+
+def check_file(filename: str, mode: black.Mode, *, data: bool = True) -> None:
+    source, expected = read_data(filename, data=data)
+    assert_format(source, expected, mode, fast=False)
+
+
+@pytest.mark.parametrize("filename", SIMPLE_CASES_PY2)
+@pytest.mark.python2
+def test_simple_format_py2(filename: str) -> None:
+    check_file(filename, DEFAULT_MODE)
+
+
+@pytest.mark.parametrize("filename", SIMPLE_CASES)
+def test_simple_format(filename: str) -> None:
+    check_file(filename, DEFAULT_MODE)
+
+
+@pytest.mark.parametrize("filename", EXPERIMENTAL_STRING_PROCESSING_CASES)
+def test_experimental_format(filename: str) -> None:
+    check_file(filename, black.Mode(experimental_string_processing=True))
+
+
+@pytest.mark.parametrize("filename", SOURCES)
+def test_source_is_formatted(filename: str) -> None:
+    path = THIS_DIR.parent / filename
+    check_file(str(path), DEFAULT_MODE, data=False)
+
+
+# =============== #
+# Complex cases
+# ============= #
+
+
+def test_empty() -> None:
+    source = expected = ""
+    assert_format(source, expected)
+
+
+def test_pep_572() -> None:
+    source, expected = read_data("pep_572")
+    assert_format(source, expected, minimum_version=(3, 8))
+
+
+def test_pep_572_remove_parens() -> None:
+    source, expected = read_data("pep_572_remove_parens")
+    assert_format(source, expected, minimum_version=(3, 8))
+
+
+def test_pep_572_do_not_remove_parens() -> None:
+    source, expected = read_data("pep_572_do_not_remove_parens")
+    # the AST safety checks will fail, but that's expected, just make sure no
+    # parentheses are touched
+    assert_format(source, expected, fast=True)
+
+
+@pytest.mark.parametrize("major, minor", [(3, 9), (3, 10)])
+def test_pep_572_newer_syntax(major: int, minor: int) -> None:
+    source, expected = read_data(f"pep_572_py{major}{minor}")
+    assert_format(source, expected, minimum_version=(major, minor))
+
+
+def test_pep_570() -> None:
+    source, expected = read_data("pep_570")
+    assert_format(source, expected, minimum_version=(3, 8))
+
+
+def test_docstring_no_string_normalization() -> None:
+    """Like test_docstring but with string normalization off."""
+    source, expected = read_data("docstring_no_string_normalization")
+    mode = replace(DEFAULT_MODE, string_normalization=False)
+    assert_format(source, expected, mode)
+
+
+def test_long_strings_flag_disabled() -> None:
+    """Tests for turning off the string processing logic."""
+    source, expected = read_data("long_strings_flag_disabled")
+    mode = replace(DEFAULT_MODE, experimental_string_processing=False)
+    assert_format(source, expected, mode)
+
+
+def test_numeric_literals() -> None:
+    source, expected = read_data("numeric_literals")
+    mode = replace(DEFAULT_MODE, target_versions=PY36_VERSIONS)
+    assert_format(source, expected, mode)
+
+
+def test_numeric_literals_ignoring_underscores() -> None:
+    source, expected = read_data("numeric_literals_skip_underscores")
+    mode = replace(DEFAULT_MODE, target_versions=PY36_VERSIONS)
+    assert_format(source, expected, mode)
+
+
+@pytest.mark.python2
+def test_python2_print_function() -> None:
+    source, expected = read_data("python2_print_function")
+    mode = replace(DEFAULT_MODE, target_versions={black.TargetVersion.PY27})
+    assert_format(source, expected, mode)
+
+
+def test_stub() -> None:
+    mode = replace(DEFAULT_MODE, is_pyi=True)
+    source, expected = read_data("stub.pyi")
+    assert_format(source, expected, mode)
+
+
+def test_python38() -> None:
+    source, expected = read_data("python38")
+    assert_format(source, expected, minimum_version=(3, 8))
+
+
+def test_python39() -> None:
+    source, expected = read_data("python39")
+    assert_format(source, expected, minimum_version=(3, 9))