git2cpp/test/conftest_wasm.py at 0.0.10 · QuantStack/git2cpp · GitHub

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# Extra fixtures used for wasm testing, including some that override the default pytest fixtures.

from functools import partial

import os

import pathlib

from playwright.sync_api import Page

import pytest

import re

import subprocess

import time

# Only include particular test files when testing wasm.

# This can be removed when all tests support wasm.

def pytest_ignore_collect(collection_path: pathlib.Path) -> bool:

return collection_path.name not in [

"test_add.py",

"test_branch.py",

"test_checkout.py",

"test_clone.py",

"test_commit.py",

"test_config.py",

"test_diff.py",

"test_fetch.py",

"test_fixtures.py",

"test_git.py",

"test_init.py",

"test_log.py",

"test_merge.py",

"test_mv.py",

"test_push.py",

"test_rebase.py",

"test_remote.py",

"test_reset.py",

"test_revlist.py",

"test_revparse.py",

"test_rm.py",

"test_showref.py",

"test_stash.py",

"test_status.py",

"test_tag.py",

]

@pytest.fixture(scope="session", autouse=True)

def run_web_server():

with open("serve.log", "w") as f:

cwd = pathlib.Path(__file__).parent.parent / "wasm/test"

proc = subprocess.Popen(["npm", "run", "serve"], stdout=f, stderr=f, cwd=cwd)

# Wait a bit until server ready to receive connections.

time.sleep(1)

yield

proc.terminate()

@pytest.fixture(scope="function", autouse=True)

def load_page(page: Page):

# Load web page at start of every test.

page.goto("http://localhost:8000")

page.locator("#loaded").wait_for()

class MockPath(pathlib.Path):

def __init__(self, path: str = ""):

super().__init__(path)

def exists(self) -> bool:

p = subprocess.run(["stat", str(self)])

return p.returncode == 0

def is_dir(self) -> bool:

p = subprocess.run(["stat", "-c", "%F", str(self)], capture_output=True, text=True)

return p.returncode == 0 and p.stdout.strip() == "directory"

def is_file(self) -> bool:

p = subprocess.run(["stat", "-c", "%F", str(self)], capture_output=True, text=True)

return p.returncode == 0 and p.stdout.strip() == "regular file"

def iterdir(self):

p = subprocess.run(

["ls", str(self), "-a", "-1"], capture_output=True, text=True, check=True

)

for f in filter(lambda f: f not in ["", ".", ".."], re.split(r"\r?\n", p.stdout)):

yield MockPath(self / f)

def mkdir(self, *, parents=False):

args = [str(self)]

if parents:

args.append("-p")

subprocess.run(["mkdir"] + args, capture_output=True, text=True, check=True)

def read_bytes(self) -> bytes:

raise RuntimeError("Not implemented")

def read_text(self) -> str:

p = subprocess.run(["cat", str(self)], capture_output=True, text=True, check=True)

text = p.stdout

if text.endswith("\n"):

text = text[:-1]

return text

def write_bytes(self, data: bytes):

# Convert binary data to a string where each element is backslash-escaped so that we can

# write to file in cockle using `echo -e <backslash-escaped data>`.

encoded_string = "".join(map(lambda d: f"\\x{d:02x}", data))

cmd = ["echo", "-e", encoded_string, ">", str(self)]

subprocess.run(cmd, capture_output=True, text=True, check=True)

return len(data)

def write_text(self, data: str):

# Note that in general it is not valid to direct output of a subprocess.run call to a file,

# but we get away with it here as the command arguments are passed straight through to

# cockle without being checked.

if data.endswith("\n"):

data = data[:-1]

cmd = ["echo", data, ">", str(self)]

subprocess.run(cmd, capture_output=True, text=True, check=True)

return len(data)

def __truediv__(self, other):

if isinstance(other, str):

return MockPath(f"{self}/{other}")

raise RuntimeError("MockPath.__truediv__ only supports strings")

def os_chdir(dir: str):

subprocess.run(["cd", str(dir)], capture_output=True, check=True, text=True)

def os_getcwd():

return subprocess.run(["pwd"], capture_output=True, check=True, text=True).stdout.strip()

def os_remove(file: str):

return subprocess.run(["rm", str(file)], capture_output=True, check=True, text=True)

def os_rename(src: str | MockPath, dst: str | MockPath):

return subprocess.run(["mv", str(src), str(dst)], capture_output=True, check=True, text=True)

def os_symlink(src: str | MockPath, dst: str | MockPath):

return subprocess.run(

["ln", "-s", str(src), str(dst)], capture_output=True, check=True, text=True

)

def subprocess_run(

page: Page,

cmd: list[str],

capture_output: bool = False,

check: bool = False,

cwd: str | MockPath | None = None,

input: str | None = None,

text: bool | None = None,

) -> subprocess.CompletedProcess:

shell_run = "async obj => await window.cockle.shellRun(obj.cmd, obj.input)"

# Set cwd.

if cwd is not None:

proc = page.evaluate(shell_run, {"cmd": "pwd"})

if proc["returncode"] != 0:

raise RuntimeError("Error getting pwd")

old_cwd = proc["stdout"].strip()

if old_cwd == str(cwd):

# cwd is already correct.

cwd = None

else:

proc = page.evaluate(shell_run, {"cmd": f"cd {cwd}"})

if proc["returncode"] != 0:

raise RuntimeError(f"Error setting cwd to {cwd}")

def maybe_wrap_arg(s: str | MockPath) -> str:

# An argument containing spaces needs to be wrapped in quotes if it is not already, due

# to how the command is passed to cockle as a single string.

# Could do better here.

s = str(s)

if " " in s and not s.endswith("'"):

return "'" + s + "'"

return s

shell_run_args = {"cmd": " ".join([maybe_wrap_arg(s) for s in cmd]), "input": input}

proc = page.evaluate(shell_run, shell_run_args)

# TypeScript object is auto converted to Python dict.

# Want to return subprocess.CompletedProcess, consider namedtuple if this fails in future.

returncode = proc["returncode"]

stdout = proc["stdout"] if capture_output else ""

stderr = proc["stderr"] if capture_output else ""

if not text:

stdout = stdout.encode("utf-8")

stderr = stderr.encode("utf-8")

# Reset cwd.

if cwd is not None:

proc = page.evaluate(shell_run, {"cmd": "cd " + old_cwd})

if proc["returncode"] != 0:

raise RuntimeError(f"Error setting cwd to {old_cwd}")

if check and returncode != 0:

raise subprocess.CalledProcessError(returncode, cmd, stdout, stderr)

return subprocess.CompletedProcess(

args=cmd, returncode=returncode, stdout=stdout, stderr=stderr

)

@pytest.fixture(scope="function")

def tmp_path() -> MockPath:

# Assumes only one tmp_path needed per test.

path = MockPath("/drive/tmp0")

subprocess.run(["mkdir", str(path)], check=True)

assert path.exists()

assert path.is_dir()

return path

@pytest.fixture(scope="function", autouse=True)

def mock_subprocess_run(page: Page, monkeypatch):

monkeypatch.setattr(subprocess, "run", partial(subprocess_run, page))

monkeypatch.setattr(os, "chdir", os_chdir)

monkeypatch.setattr(os, "getcwd", os_getcwd)

monkeypatch.setattr(os, "remove", os_remove)

monkeypatch.setattr(os, "rename", os_rename)

monkeypatch.setattr(os, "symlink", os_symlink)

git2cpp/test/conftest_wasm.py at 0.0.10 · QuantStack/git2cpp · GitHub

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