fix: support pypy, but only --inline-snapshot=disable

.github/workflows/ci.yml

@@ -26,7 +26,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
+        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12', '3.13', pypy3.8, pypy3.9, pypy3.10]
         os: [ubuntu-latest, windows-latest, macos-13]
     steps:
     - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7

changelog.d/20241108_232134_15r10nk-git_fix_cli.md

@@ -0,0 +1,43 @@
+<!--
+A new scriv changelog fragment.
+
+Uncomment the section that is right (remove the HTML comment wrapper).
+-->
+
+### Removed
+
+- removed the `"Programming Language :: Python :: Implementation :: PyPy"` classifier which was incorrect, because inline-snapshot can not fix snapshots on pypy.
+  inline-snapshot enforces now `--inline-snapshot=disable` if it is used with any other implementation than cpython, which allows it to be used in packages which want to support pypy.
+
+
+
+<!--
+### Added
+
+- A bullet item for the Added category.
+
+-->
+<!--
+### Changed
+
+- A bullet item for the Changed category.
+
+-->
+<!--
+### Deprecated
+
+- A bullet item for the Deprecated category.
+
+-->
+<!--
+### Fixed
+
+- A bullet item for the Fixed category.
+
+-->
+<!--
+### Security
+
+- A bullet item for the Security category.
+
+-->

docs/limitations.md

@@ -6,3 +6,7 @@ inline-snapshot must disable pytest assert-rewriting if you use report/review/cr
 ## xdist is not supported
 
 You can not use inline-snapshot in combination with `pytest-xdist`. The use of `-n=...` implies `--inline-snapshot=disable`.
+
+## works only with cpython
+
+inline-snapshot works currently only with cpython. `--inline-snapshot=disable` is enforced for every other implementation.

pyproject.toml

@@ -105,7 +105,7 @@ dependencies=["cogapp","lxml","requests"]
 scripts.update="cog -r docs/**.md"
 
 [[tool.hatch.envs.hatch-test.matrix]]
-python = ["3.13", "3.12", "3.11", "3.10", "3.9", "3.8"]
+python = ["3.13", "3.12", "3.11", "3.10", "3.9", "3.8","pypy3.8","pypy3.9","pypy3.10"]
 
 [tool.hatch.envs.hatch-test]
 extra-dependencies = [
@@ -114,7 +114,7 @@ extra-dependencies = [
   "mypy>=1.2.0",
   "pyright>=1.1.359",
   "pytest-subtests>=0.11.0",
-  "time-machine>=2.10.0",
+  "pytest-freezer>=0.4.8",
   "pydantic"
 ]
 env-vars.TOP = "{root}"

src/inline_snapshot/pytest_plugin.py

@@ -64,6 +64,10 @@ def xdist_running(config):
     )
 
 
+def is_implementation_supported():
+    return sys.implementation.name == "cpython"
+
+
 def pytest_configure(config):
     global flags
 
@@ -84,7 +88,7 @@ def pytest_configure(config):
             f"--inline-snapshot=disable can not be combined with other flags ({', '.join(flags-{'disable'})})"
         )
 
-    if xdist_running(config):
+    if xdist_running(config) or not is_implementation_supported():
         _inline_snapshot._active = False
 
     elif flags & {"review"}:
@@ -186,6 +190,14 @@ def pytest_terminal_summary(terminalreporter, exitstatus, config):
             )
         return
 
+    if not is_implementation_supported():
+        if flags != {"disable"}:
+            terminalreporter.section("inline snapshot")
+            terminalreporter.write(
+                f"INFO: inline-snapshot was disabled because {sys.implementation.name} is not supported\n"
+            )
+        return
+
     if not _inline_snapshot._active:
         return
 

src/inline_snapshot/testing/_example.py

@@ -271,7 +271,7 @@ def run_pytest(
                 report_str = report_str.replace("\r", "")
                 report_str = report_str.replace(" \n", " ⏎\n")
 
-                assert report_str == report
+                assert report_str == report, repr(report_str)
 
             if changed_files is not None:
                 current_files = {}

tests/conftest.py

@@ -2,6 +2,7 @@
 import platform
 import re
 import shutil
+import sys
 import textwrap
 import traceback
 from dataclasses import dataclass
@@ -30,6 +31,17 @@
 black.files.find_project_root = black.files.find_project_root.__wrapped__  # type: ignore
 
 
+@pytest.fixture(autouse=True)
+def check_pypy(request):
+    implementation = sys.implementation.name
+    node = request.node
+
+    if implementation != "cpython" and node.get_closest_marker("no_rewriting") is None:
+        pytest.skip(f"{implementation} is not supported")
+
+    yield
+
+
 @pytest.fixture()
 def check_update(source):
     def w(source_code, *, flags="", reported_flags=None, number=1):
@@ -266,10 +278,21 @@ def setup(self, source: str):
                 """
 import datetime
 import pytest
+from freezegun.api import FakeDatetime,FakeDate
+from inline_snapshot import customize_repr
+
+@customize_repr
+def _(value:FakeDatetime):
+    return value.__repr__().replace("FakeDatetime","datetime.datetime")
+
+@customize_repr
+def _(value:FakeDate):
+    return value.__repr__().replace("FakeDate","datetime.date")
+
 
 @pytest.fixture(autouse=True)
-def set_time(time_machine):
-        time_machine.move_to(datetime.datetime(2024, 3, 14, 0, 0, 0, 0),tick=False)
+def set_time(freezer):
+        freezer.move_to(datetime.datetime(2024, 3, 14, 0, 0, 0, 0))
         yield
 """
             )

tests/test_inline_snapshot.py

@@ -18,12 +18,14 @@
 from inline_snapshot.testing._example import snapshot_env
 
 
+@pytest.mark.no_rewriting
 def test_snapshot_eq():
     with snapshot_env():
         assert 1 == snapshot(1)
         assert snapshot(1) == 1
 
 
+@pytest.mark.no_rewriting
 def test_disabled():
     with snapshot_env():
         _inline_snapshot._active = False

tests/test_pypy.py

@@ -0,0 +1,40 @@
+import sys
+
+import pytest
+from inline_snapshot import snapshot
+from inline_snapshot.testing import Example
+
+
+@pytest.mark.no_rewriting
+def test_pypy():
+    report = (
+        snapshot("INFO: inline-snapshot was disabled because pypy is not supported")
+        if sys.implementation.name == "pypy"
+        else snapshot(
+            """\
+-------------------------------- Fix snapshots ---------------------------------
++----------------------------- test_something.py ------------------------------+
+| @@ -1,6 +1,6 @@                                                              |
+|                                                                              |
+|  from inline_snapshot import snapshot                                        |
+|                                                                              |
+|  def test_example():                                                         |
+| -    assert 1+1==snapshot(3)                                                 |
+| +    assert 1+1==snapshot(2)                                                 |
++------------------------------------------------------------------------------+
+These changes will be applied, because you used --inline-snapshot=fix\
+"""
+        )
+    )
+
+    Example(
+        """\
+from inline_snapshot import snapshot
+
+def test_example():
+    assert 1+1==snapshot(3)
+
+    """
+    ).run_pytest(["--inline-snapshot=fix"], report=report).run_pytest(
+        ["--inline-snapshot=disable"], report=""
+    )

tests/test_pytest_plugin.py

@@ -1,3 +1,4 @@
+import pytest
 from inline_snapshot import snapshot
 from inline_snapshot.testing import Example
 
@@ -249,6 +250,7 @@ def test_a():
     )
 
 
+@pytest.mark.no_rewriting
 def test_disable_option(project):
     project.setup(
         """\
@@ -474,6 +476,7 @@ def test_assertion_error(project):
     )
 
 
+@pytest.mark.no_rewriting
 def test_run_without_pytest(pytester):
     # snapshots are deactivated by default
     pytester.makepyfile(