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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144"""The view plugin: albedo-render pages attached to the running cell."""import asyncioimport inspectfrom pathlib import Pathimport subprocessimport sysimport tempfileimport unittestfrom unittest.mock import patch
sys.path.insert(0, str(Path(__file__).resolve().parents[2] / "priv" / "python"))from albedo_api import PythonApifrom albedo_plugins import files, view as plugin
class FakeJob: def __init__(self, output, exit_code): self.output, self.exit_code, self.timed_out = output, exit_code, False
def __await__(self): async def settled(): return self return settled().__await__()
def tail(self, _limit): return self.output
def real_bash(command, timeout): """What `bash(command)` would run, executed here without a kernel.""" done = subprocess.run(command, shell=True, capture_output=True, text=True, timeout=timeout) return FakeJob(done.stdout + done.stderr, done.returncode)
class ViewPluginTest(unittest.TestCase): def setUp(self): self.loop = asyncio.new_event_loop() self.addCleanup(self.loop.close) self.root = Path(tempfile.mkdtemp(prefix="albedo-view-test-"))
def write(self, name, content): path = self.root/name path.write_text(content) return path
def bindings(self, attach): api = PythonApi(self.loop, None, RuntimeError, None, 100, lambda event: None, lambda close: None, lambda _: None, attach_image=attach) return plugin.setup(api)
def view_code(self, attach): return self.bindings(attach)["view_code"]
def run_view(self, attach, *args, name="view_code", **kwargs): with patch.object(files.jobs, "bash", real_bash), \ patch.object(files.jobs, "forget", lambda job: None), \ patch.object(files.jobs, "preview_limit", 65_536, create=True): return self.loop.run_until_complete(self.bindings(attach)[name](*args, **kwargs))
@unittest.skipUnless(plugin.RENDERER.exists(), "albedo-render is not built") def test_pages_attach_in_order_and_the_text_names_the_rest(self): path = self.write("app.py", "".join(f"value_{n} = {n}\n" for n in range(1, 401))) attached = [] text = self.run_view(lambda data: attached.append(data) or "attached", str(path), 11) self.assertEqual(len(attached), 4) self.assertTrue(all(data.startswith(b"\x89PNG\r\n\x1a\n") for data in attached)) lines = text.splitlines() self.assertEqual(lines[0], f"{path} (python)") # 390 lines need 5 pages of at most 80; each holds 78. self.assertRegex(lines[1], r"^image 1: lines 11-88, \d+x\d+$") self.assertRegex(lines[4], r"^image 4: lines 245-322, ") self.assertEqual(lines[5], f"not shown from line 323: view_code({str(path)!r}, 323)")
@unittest.skipUnless(plugin.RENDERER.exists(), "albedo-render is not built") def test_the_cell_image_limit_and_bad_requests_are_explained(self): path = self.write("a.rs", "".join(f"let x{n} = {n};\n" for n in range(1, 201))) taken = []
def one_only(data): if taken: raise ValueError("a cell returns at most 4 images") taken.append(data) return "attached"
lines = self.run_view(one_only, str(path), 1, 200).splitlines() self.assertRegex(lines[1], r"^image 1: lines 1-67, \d+x\d+$") self.assertEqual(lines[2:], [ "image 2 not attached: a cell returns at most 4 images", f"not shown from line 68: view_code({str(path)!r}, 68)", ]) with self.assertRaisesRegex(RuntimeError, "has 200 lines; --start 300 is past the end"): self.run_view(one_only, str(path), 300) with self.assertRaisesRegex(FileNotFoundError, "nearby paths: .*a.rs"): self.run_view(one_only, str(self.root/"b.rs"))
def test_it_says_how_to_get_it_when_it_cannot_run(self): path = self.write("a.py", "x = 1\n") with self.assertRaisesRegex(RuntimeError, "cannot return images"): self.run_view(None, str(path)) with patch.object(plugin, "RENDERER", self.root/"missing"), \ patch.object(plugin, "_which", lambda name: None), \ self.assertRaisesRegex(RuntimeError, "native/render/install.sh"): self.run_view(lambda data: "attached", str(path)) self.assertEqual(repr(self.view_code(None)(str(path))), "<view_code(...) has not run: use `await view_code(...)` for its images>") with self.assertRaisesRegex(ValueError, "end_line >= start_line"): self.view_code(None)(str(path), 5, 4)
def test_signatures_name_what_awaiting_returns(self): for name, view in self.bindings(None).items(): with self.subTest(name=name): self.assertEqual(inspect.signature(view).return_annotation, "Search[Text]")
@unittest.skipUnless(plugin.RENDERER.exists(), "albedo-render is not built") def test_view_diff_shows_uncommitted_changes_and_nothing_else(self): git = lambda *args: subprocess.run(["git", "-C", str(self.root), *args], check=True, capture_output=True) git("init", "-q") git("-c", "user.name=t", "-c", "user.email=t@t", "-c", "commit.gpgsign=false", "commit", "-q", "--allow-empty", "-m", "root") path = self.write("app.py", "def answer():\n return 41\n") git("add", "app.py") git("-c", "user.name=t", "-c", "user.email=t@t", "-c", "commit.gpgsign=false", "commit", "-q", "-m", "app") attached = [] attach = lambda data: attached.append(data) or "attached" self.assertEqual(self.run_view(attach, str(self.root), name="view_diff"), f"no uncommitted changes under {self.root}") path.write_text("def answer():\n return 42\n") self.write("new.py", "untracked = True\n") lines = self.run_view(attach, str(self.root), name="view_diff").splitlines() self.assertEqual(lines[0], f"diff of {self.root} (diff)") self.assertRegex(lines[1], r"^image 1: lines 1-\d+, \d+x\d+$") self.assertEqual(len(lines), 2) self.assertEqual(len(attached), 1) git("add", "app.py") self.assertEqual(self.run_view(attach, str(path), name="view_diff"), f"no uncommitted changes under {path}") self.assertIn("(staged)", self.run_view(attach, str(path), name="view_diff", staged=True)) with self.assertRaisesRegex(RuntimeError, "git diff failed: .*not a git repository"): self.run_view(attach, tempfile.mkdtemp(prefix="albedo-no-git-"), name="view_diff")
if __name__ == "__main__": unittest.main()