Move test for g:load_black to improve plugin performance (GH-2896)

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

diff --git a/tests/test_ipynb.py b/tests/test_ipynb.py
index 038155e9270e25ec98d3cf35b25329bea3c93eb6..b534d77c22abea804c38532583cd230fec218197 100644 (file)
--- a/tests/test_ipynb.py
+++ b/tests/test_ipynb.py
@@ -1,4 +1,9 @@
+from dataclasses import replace

 import pathlib
 import pathlib

+import re
+from contextlib import ExitStack as does_not_raise
+from typing import ContextManager
+

 from click.testing import CliRunner
 from black.handle_ipynb_magics import jupyter_dependencies_are_installed
 from black import (
 from click.testing import CliRunner
 from black.handle_ipynb_magics import jupyter_dependencies_are_installed
 from black import (


@@ -8,11 +13,10 @@ from black import (
     format_file_contents,
     format_file_in_place,
 )
     format_file_contents,
     format_file_in_place,
 )

-import os

 import pytest
 from black import Mode
 from _pytest.monkeypatch import MonkeyPatch
 import pytest
 from black import Mode
 from _pytest.monkeypatch import MonkeyPatch

-from py.path import local
+from tests.util import DATA_DIR

 
 pytestmark = pytest.mark.jupyter
 pytest.importorskip("IPython", reason="IPython is an optional dependency")
 
 pytestmark = pytest.mark.jupyter
 pytest.importorskip("IPython", reason="IPython is an optional dependency")


@@ -20,6 +24,8 @@ pytest.importorskip("tokenize_rt", reason="tokenize-rt is an optional dependency
 
 JUPYTER_MODE = Mode(is_ipynb=True)
 
 
 JUPYTER_MODE = Mode(is_ipynb=True)
 

+EMPTY_CONFIG = DATA_DIR / "empty_pyproject.toml"
+

 runner = CliRunner()
 
 
 runner = CliRunner()
 
 


@@ -62,9 +68,19 @@ def test_trailing_semicolon_noop() -> None:
         format_cell(src, fast=True, mode=JUPYTER_MODE)
 
 
         format_cell(src, fast=True, mode=JUPYTER_MODE)
 
 

-def test_cell_magic() -> None:
+@pytest.mark.parametrize(
+    "mode",
+    [
+        pytest.param(JUPYTER_MODE, id="default mode"),
+        pytest.param(
+            replace(JUPYTER_MODE, python_cell_magics={"cust1", "cust1"}),
+            id="custom cell magics mode",
+        ),
+    ],
+)
+def test_cell_magic(mode: Mode) -> None:

     src = "%%time\nfoo =bar"
     src = "%%time\nfoo =bar"

-    result = format_cell(src, fast=True, mode=JUPYTER_MODE)
+    result = format_cell(src, fast=True, mode=mode)

     expected = "%%time\nfoo = bar"
     assert result == expected
 
     expected = "%%time\nfoo = bar"
     assert result == expected
 


@@ -75,6 +91,16 @@ def test_cell_magic_noop() -> None:
         format_cell(src, fast=True, mode=JUPYTER_MODE)
 
 
         format_cell(src, fast=True, mode=JUPYTER_MODE)
 
 

+@pytest.mark.parametrize(
+    "mode",
+    [
+        pytest.param(JUPYTER_MODE, id="default mode"),
+        pytest.param(
+            replace(JUPYTER_MODE, python_cell_magics={"cust1", "cust1"}),
+            id="custom cell magics mode",
+        ),
+    ],
+)

 @pytest.mark.parametrize(
     "src, expected",
     (
 @pytest.mark.parametrize(
     "src, expected",
     (


@@ -89,10 +115,14 @@ def test_cell_magic_noop() -> None:
             id="Line magic with argument",
         ),
         pytest.param("%time\n'foo'", '%time\n"foo"', id="Line magic without argument"),
             id="Line magic with argument",
         ),
         pytest.param("%time\n'foo'", '%time\n"foo"', id="Line magic without argument"),

+        pytest.param(
+            "env =  %env var", "env = %env var", id="Assignment to environment variable"
+        ),
+        pytest.param("env =  %env", "env = %env", id="Assignment to magic"),

     ),
 )
     ),
 )

-def test_magic(src: str, expected: str) -> None:
-    result = format_cell(src, fast=True, mode=JUPYTER_MODE)
+def test_magic(src: str, expected: str, mode: Mode) -> None:
+    result = format_cell(src, fast=True, mode=mode)

     assert result == expected
 
 
     assert result == expected
 
 


@@ -101,6 +131,7 @@ def test_magic(src: str, expected: str) -> None:
     (
         "%%bash\n2+2",
         "%%html --isolated\n2+2",
     (
         "%%bash\n2+2",
         "%%html --isolated\n2+2",

+        "%%writefile e.txt\n  meh\n meh",

     ),
 )
 def test_non_python_magics(src: str) -> None:
     ),
 )
 def test_non_python_magics(src: str) -> None:


@@ -127,12 +158,47 @@ def test_magic_noop() -> None:
 
 
 def test_cell_magic_with_magic() -> None:
 
 
 def test_cell_magic_with_magic() -> None:

-    src = "%%t -n1\nls =!ls"
+    src = "%%timeit -n1\nls =!ls"

     result = format_cell(src, fast=True, mode=JUPYTER_MODE)
     result = format_cell(src, fast=True, mode=JUPYTER_MODE)

-    expected = "%%t -n1\nls = !ls"
+    expected = "%%timeit -n1\nls = !ls"

     assert result == expected
 
 
     assert result == expected
 
 

+@pytest.mark.parametrize(
+    "mode, expected_output, expectation",
+    [
+        pytest.param(
+            JUPYTER_MODE,
+            "%%custom_python_magic -n1 -n2\nx=2",
+            pytest.raises(NothingChanged),
+            id="No change when cell magic not registered",
+        ),
+        pytest.param(
+            replace(JUPYTER_MODE, python_cell_magics={"cust1", "cust1"}),
+            "%%custom_python_magic -n1 -n2\nx=2",
+            pytest.raises(NothingChanged),
+            id="No change when other cell magics registered",
+        ),
+        pytest.param(
+            replace(JUPYTER_MODE, python_cell_magics={"custom_python_magic", "cust1"}),
+            "%%custom_python_magic -n1 -n2\nx = 2",
+            does_not_raise(),
+            id="Correctly change when cell magic registered",
+        ),
+    ],
+)
+def test_cell_magic_with_custom_python_magic(
+    mode: Mode, expected_output: str, expectation: ContextManager[object]
+) -> None:
+    with expectation:
+        result = format_cell(
+            "%%custom_python_magic -n1 -n2\nx=2",
+            fast=True,
+            mode=mode,
+        )
+        assert result == expected_output
+
+

 def test_cell_magic_nested() -> None:
     src = "%%time\n%%time\n2+2"
     result = format_cell(src, fast=True, mode=JUPYTER_MODE)
 def test_cell_magic_nested() -> None:
     src = "%%time\n%%time\n2+2"
     result = format_cell(src, fast=True, mode=JUPYTER_MODE)


@@ -178,9 +244,7 @@ def test_empty_cell() -> None:
 
 
 def test_entire_notebook_empty_metadata() -> None:
 
 
 def test_entire_notebook_empty_metadata() -> None:

-    with open(
-        os.path.join("tests", "data", "notebook_empty_metadata.ipynb"), "rb"
-    ) as fd:
+    with open(DATA_DIR / "notebook_empty_metadata.ipynb", "rb") as fd:

         content_bytes = fd.read()
     content = content_bytes.decode()
     result = format_file_contents(content, fast=True, mode=JUPYTER_MODE)
         content_bytes = fd.read()
     content = content_bytes.decode()
     result = format_file_contents(content, fast=True, mode=JUPYTER_MODE)


@@ -217,9 +281,7 @@ def test_entire_notebook_empty_metadata() -> None:
 
 
 def test_entire_notebook_trailing_newline() -> None:
 
 
 def test_entire_notebook_trailing_newline() -> None:

-    with open(
-        os.path.join("tests", "data", "notebook_trailing_newline.ipynb"), "rb"
-    ) as fd:
+    with open(DATA_DIR / "notebook_trailing_newline.ipynb", "rb") as fd:

         content_bytes = fd.read()
     content = content_bytes.decode()
     result = format_file_contents(content, fast=True, mode=JUPYTER_MODE)
         content_bytes = fd.read()
     content = content_bytes.decode()
     result = format_file_contents(content, fast=True, mode=JUPYTER_MODE)


@@ -268,9 +330,7 @@ def test_entire_notebook_trailing_newline() -> None:
 
 
 def test_entire_notebook_no_trailing_newline() -> None:
 
 
 def test_entire_notebook_no_trailing_newline() -> None:

-    with open(
-        os.path.join("tests", "data", "notebook_no_trailing_newline.ipynb"), "rb"
-    ) as fd:
+    with open(DATA_DIR / "notebook_no_trailing_newline.ipynb", "rb") as fd:

         content_bytes = fd.read()
     content = content_bytes.decode()
     result = format_file_contents(content, fast=True, mode=JUPYTER_MODE)
         content_bytes = fd.read()
     content = content_bytes.decode()
     result = format_file_contents(content, fast=True, mode=JUPYTER_MODE)


@@ -319,9 +379,7 @@ def test_entire_notebook_no_trailing_newline() -> None:
 
 
 def test_entire_notebook_without_changes() -> None:
 
 
 def test_entire_notebook_without_changes() -> None:

-    with open(
-        os.path.join("tests", "data", "notebook_without_changes.ipynb"), "rb"
-    ) as fd:
+    with open(DATA_DIR / "notebook_without_changes.ipynb", "rb") as fd:

         content_bytes = fd.read()
     content = content_bytes.decode()
     with pytest.raises(NothingChanged):
         content_bytes = fd.read()
     content = content_bytes.decode()
     with pytest.raises(NothingChanged):


@@ -329,7 +387,7 @@ def test_entire_notebook_without_changes() -> None:
 
 
 def test_non_python_notebook() -> None:
 
 
 def test_non_python_notebook() -> None:

-    with open(os.path.join("tests", "data", "non_python_notebook.ipynb"), "rb") as fd:
+    with open(DATA_DIR / "non_python_notebook.ipynb", "rb") as fd:

         content_bytes = fd.read()
     content = content_bytes.decode()
     with pytest.raises(NothingChanged):
         content_bytes = fd.read()
     content = content_bytes.decode()
     with pytest.raises(NothingChanged):


@@ -342,27 +400,22 @@ def test_empty_string() -> None:
 
 
 def test_unparseable_notebook() -> None:
 
 
 def test_unparseable_notebook() -> None:

-    msg = (
-        r"File 'tests[/\\]data[/\\]notebook_which_cant_be_parsed\.ipynb' "
-        r"cannot be parsed as valid Jupyter notebook\."
-    )
+    path = DATA_DIR / "notebook_which_cant_be_parsed.ipynb"
+    msg = rf"File '{re.escape(str(path))}' cannot be parsed as valid Jupyter notebook\."

     with pytest.raises(ValueError, match=msg):
     with pytest.raises(ValueError, match=msg):

-        format_file_in_place(
-            pathlib.Path("tests") / "data/notebook_which_cant_be_parsed.ipynb",
-            fast=True,
-            mode=JUPYTER_MODE,
-        )
+        format_file_in_place(path, fast=True, mode=JUPYTER_MODE)

 
 
 def test_ipynb_diff_with_change() -> None:
     result = runner.invoke(
         main,
         [
 
 
 def test_ipynb_diff_with_change() -> None:
     result = runner.invoke(
         main,
         [

-            os.path.join("tests", "data", "notebook_trailing_newline.ipynb"),
+            str(DATA_DIR / "notebook_trailing_newline.ipynb"),

             "--diff",
             "--diff",

+            f"--config={EMPTY_CONFIG}",

         ],
     )
         ],
     )

-    expected = "@@ -1,3 +1,3 @@\n %%time\n \n-print('foo')\n" '+print("foo")\n'
+    expected = "@@ -1,3 +1,3 @@\n %%time\n \n-print('foo')\n+print(\"foo\")\n"

     assert expected in result.output
 
 
     assert expected in result.output
 
 


@@ -370,8 +423,9 @@ def test_ipynb_diff_with_no_change() -> None:
     result = runner.invoke(
         main,
         [
     result = runner.invoke(
         main,
         [

-            os.path.join("tests", "data", "notebook_without_changes.ipynb"),
+            str(DATA_DIR / "notebook_without_changes.ipynb"),

             "--diff",
             "--diff",

+            f"--config={EMPTY_CONFIG}",

         ],
     )
     expected = "1 file would be left unchanged."
         ],
     )
     expected = "1 file would be left unchanged."


@@ -379,52 +433,56 @@ def test_ipynb_diff_with_no_change() -> None:
 
 
 def test_cache_isnt_written_if_no_jupyter_deps_single(
 
 
 def test_cache_isnt_written_if_no_jupyter_deps_single(

-    monkeypatch: MonkeyPatch, tmpdir: local
+    monkeypatch: MonkeyPatch, tmp_path: pathlib.Path

 ) -> None:
     # Check that the cache isn't written to if Jupyter dependencies aren't installed.
     jupyter_dependencies_are_installed.cache_clear()
 ) -> None:
     # Check that the cache isn't written to if Jupyter dependencies aren't installed.
     jupyter_dependencies_are_installed.cache_clear()

-    nb = os.path.join("tests", "data", "notebook_trailing_newline.ipynb")
-    tmp_nb = tmpdir / "notebook.ipynb"
+    nb = DATA_DIR / "notebook_trailing_newline.ipynb"
+    tmp_nb = tmp_path / "notebook.ipynb"

     with open(nb) as src, open(tmp_nb, "w") as dst:
         dst.write(src.read())
     monkeypatch.setattr(
         "black.jupyter_dependencies_are_installed", lambda verbose, quiet: False
     )
     with open(nb) as src, open(tmp_nb, "w") as dst:
         dst.write(src.read())
     monkeypatch.setattr(
         "black.jupyter_dependencies_are_installed", lambda verbose, quiet: False
     )

-    result = runner.invoke(main, [str(tmpdir / "notebook.ipynb")])
+    result = runner.invoke(
+        main, [str(tmp_path / "notebook.ipynb"), f"--config={EMPTY_CONFIG}"]
+    )

     assert "No Python files are present to be formatted. Nothing to do" in result.output
     jupyter_dependencies_are_installed.cache_clear()
     monkeypatch.setattr(
         "black.jupyter_dependencies_are_installed", lambda verbose, quiet: True
     )
     assert "No Python files are present to be formatted. Nothing to do" in result.output
     jupyter_dependencies_are_installed.cache_clear()
     monkeypatch.setattr(
         "black.jupyter_dependencies_are_installed", lambda verbose, quiet: True
     )

-    result = runner.invoke(main, [str(tmpdir / "notebook.ipynb")])
+    result = runner.invoke(
+        main, [str(tmp_path / "notebook.ipynb"), f"--config={EMPTY_CONFIG}"]
+    )

     assert "reformatted" in result.output
 
 
 def test_cache_isnt_written_if_no_jupyter_deps_dir(
     assert "reformatted" in result.output
 
 
 def test_cache_isnt_written_if_no_jupyter_deps_dir(

-    monkeypatch: MonkeyPatch, tmpdir: local
+    monkeypatch: MonkeyPatch, tmp_path: pathlib.Path

 ) -> None:
     # Check that the cache isn't written to if Jupyter dependencies aren't installed.
     jupyter_dependencies_are_installed.cache_clear()
 ) -> None:
     # Check that the cache isn't written to if Jupyter dependencies aren't installed.
     jupyter_dependencies_are_installed.cache_clear()

-    nb = os.path.join("tests", "data", "notebook_trailing_newline.ipynb")
-    tmp_nb = tmpdir / "notebook.ipynb"
+    nb = DATA_DIR / "notebook_trailing_newline.ipynb"
+    tmp_nb = tmp_path / "notebook.ipynb"

     with open(nb) as src, open(tmp_nb, "w") as dst:
         dst.write(src.read())
     monkeypatch.setattr(
         "black.files.jupyter_dependencies_are_installed", lambda verbose, quiet: False
     )
     with open(nb) as src, open(tmp_nb, "w") as dst:
         dst.write(src.read())
     monkeypatch.setattr(
         "black.files.jupyter_dependencies_are_installed", lambda verbose, quiet: False
     )

-    result = runner.invoke(main, [str(tmpdir)])
+    result = runner.invoke(main, [str(tmp_path), f"--config={EMPTY_CONFIG}"])

     assert "No Python files are present to be formatted. Nothing to do" in result.output
     jupyter_dependencies_are_installed.cache_clear()
     monkeypatch.setattr(
         "black.files.jupyter_dependencies_are_installed", lambda verbose, quiet: True
     )
     assert "No Python files are present to be formatted. Nothing to do" in result.output
     jupyter_dependencies_are_installed.cache_clear()
     monkeypatch.setattr(
         "black.files.jupyter_dependencies_are_installed", lambda verbose, quiet: True
     )

-    result = runner.invoke(main, [str(tmpdir)])
+    result = runner.invoke(main, [str(tmp_path), f"--config={EMPTY_CONFIG}"])

     assert "reformatted" in result.output
 
 
     assert "reformatted" in result.output
 
 

-def test_ipynb_flag(tmpdir: local) -> None:
-    nb = os.path.join("tests", "data", "notebook_trailing_newline.ipynb")
-    tmp_nb = tmpdir / "notebook.a_file_extension_which_is_definitely_not_ipynb"
+def test_ipynb_flag(tmp_path: pathlib.Path) -> None:
+    nb = DATA_DIR / "notebook_trailing_newline.ipynb"
+    tmp_nb = tmp_path / "notebook.a_file_extension_which_is_definitely_not_ipynb"

     with open(nb) as src, open(tmp_nb, "w") as dst:
         dst.write(src.read())
     result = runner.invoke(
     with open(nb) as src, open(tmp_nb, "w") as dst:
         dst.write(src.read())
     result = runner.invoke(


@@ -433,23 +491,34 @@ def test_ipynb_flag(tmpdir: local) -> None:
             str(tmp_nb),
             "--diff",
             "--ipynb",
             str(tmp_nb),
             "--diff",
             "--ipynb",

+            f"--config={EMPTY_CONFIG}",

         ],
     )
         ],
     )

-    expected = "@@ -1,3 +1,3 @@\n %%time\n \n-print('foo')\n" '+print("foo")\n'
+    expected = "@@ -1,3 +1,3 @@\n %%time\n \n-print('foo')\n+print(\"foo\")\n"

     assert expected in result.output
 
 
 def test_ipynb_and_pyi_flags() -> None:
     assert expected in result.output
 
 
 def test_ipynb_and_pyi_flags() -> None:

-    nb = os.path.join("tests", "data", "notebook_trailing_newline.ipynb")
+    nb = DATA_DIR / "notebook_trailing_newline.ipynb"

     result = runner.invoke(
         main,
         [
     result = runner.invoke(
         main,
         [

-            nb,
+            str(nb),

             "--pyi",
             "--ipynb",
             "--diff",
             "--pyi",
             "--ipynb",
             "--diff",

+            f"--config={EMPTY_CONFIG}",

         ],
     )
     assert isinstance(result.exception, SystemExit)
     expected = "Cannot pass both `pyi` and `ipynb` flags!\n"
     assert result.output == expected
         ],
     )
     assert isinstance(result.exception, SystemExit)
     expected = "Cannot pass both `pyi` and `ipynb` flags!\n"
     assert result.output == expected

+
+
+def test_unable_to_replace_magics(monkeypatch: MonkeyPatch) -> None:
+    src = "%%time\na = 'foo'"
+    monkeypatch.setattr("black.handle_ipynb_magics.TOKEN_HEX", lambda _: "foo")
+    with pytest.raises(
+        AssertionError, match="Black was not able to replace IPython magic"
+    ):
+        format_cell(src, fast=True, mode=JUPYTER_MODE)