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"""
helper routines for testing round trip of commented YAML data
"""
import sys
import textwrap
from pathlib import Path
enforce = object()
def dedent(data):
try:
position_of_first_newline = data.index("\n")
for idx in range(position_of_first_newline):
if not data[idx].isspace():
raise ValueError
except ValueError:
pass
else:
data = data[position_of_first_newline + 1 :]
return textwrap.dedent(data)
def round_trip_load(inp, preserve_quotes=None, version=None):
import srsly.ruamel_yaml # NOQA
dinp = dedent(inp)
return srsly.ruamel_yaml.load(
dinp,
Loader=srsly.ruamel_yaml.RoundTripLoader,
preserve_quotes=preserve_quotes,
version=version,
)
def round_trip_load_all(inp, preserve_quotes=None, version=None):
import srsly.ruamel_yaml # NOQA
dinp = dedent(inp)
return srsly.ruamel_yaml.load_all(
dinp,
Loader=srsly.ruamel_yaml.RoundTripLoader,
preserve_quotes=preserve_quotes,
version=version,
)
def round_trip_dump(
data,
stream=None,
indent=None,
block_seq_indent=None,
top_level_colon_align=None,
prefix_colon=None,
explicit_start=None,
explicit_end=None,
version=None,
):
import srsly.ruamel_yaml # NOQA
return srsly.ruamel_yaml.round_trip_dump(
data,
stream=stream,
indent=indent,
block_seq_indent=block_seq_indent,
top_level_colon_align=top_level_colon_align,
prefix_colon=prefix_colon,
explicit_start=explicit_start,
explicit_end=explicit_end,
version=version,
)
def diff(inp, outp, file_name="stdin"):
import difflib
inl = inp.splitlines(True) # True for keepends
outl = outp.splitlines(True)
diff = difflib.unified_diff(inl, outl, file_name, "round trip YAML")
# 2.6 difflib has trailing space on filename lines %-)
strip_trailing_space = sys.version_info < (2, 7)
for line in diff:
if strip_trailing_space and line[:4] in ["--- ", "+++ "]:
line = line.rstrip() + "\n"
sys.stdout.write(line)
def round_trip(
inp,
outp=None,
extra=None,
intermediate=None,
indent=None,
block_seq_indent=None,
top_level_colon_align=None,
prefix_colon=None,
preserve_quotes=None,
explicit_start=None,
explicit_end=None,
version=None,
dump_data=None,
):
"""
inp: input string to parse
outp: expected output (equals input if not specified)
"""
if outp is None:
outp = inp
doutp = dedent(outp)
if extra is not None:
doutp += extra
data = round_trip_load(inp, preserve_quotes=preserve_quotes)
if dump_data:
print("data", data)
if intermediate is not None:
if isinstance(intermediate, dict):
for k, v in intermediate.items():
if data[k] != v:
print("{0!r} <> {1!r}".format(data[k], v))
raise ValueError
res = round_trip_dump(
data,
indent=indent,
block_seq_indent=block_seq_indent,
top_level_colon_align=top_level_colon_align,
prefix_colon=prefix_colon,
explicit_start=explicit_start,
explicit_end=explicit_end,
version=version,
)
if res != doutp:
diff(doutp, res, "input string")
print("\nroundtrip data:\n", res, sep="")
assert res == doutp
res = round_trip_dump(
data,
indent=indent,
block_seq_indent=block_seq_indent,
top_level_colon_align=top_level_colon_align,
prefix_colon=prefix_colon,
explicit_start=explicit_start,
explicit_end=explicit_end,
version=version,
)
print("roundtrip second round data:\n", res, sep="")
assert res == doutp
return data
def na_round_trip(
inp,
outp=None,
extra=None,
intermediate=None,
indent=None,
top_level_colon_align=None,
prefix_colon=None,
preserve_quotes=None,
explicit_start=None,
explicit_end=None,
version=None,
dump_data=None,
):
"""
inp: input string to parse
outp: expected output (equals input if not specified)
"""
inp = dedent(inp)
if outp is None:
outp = inp
if version is not None:
version = version
doutp = dedent(outp)
if extra is not None:
doutp += extra
yaml = YAML()
yaml.preserve_quotes = preserve_quotes
yaml.scalar_after_indicator = False # newline after every directives end
data = yaml.load(inp)
if dump_data:
print("data", data)
if intermediate is not None:
if isinstance(intermediate, dict):
for k, v in intermediate.items():
if data[k] != v:
print("{0!r} <> {1!r}".format(data[k], v))
raise ValueError
yaml.indent = indent
yaml.top_level_colon_align = top_level_colon_align
yaml.prefix_colon = prefix_colon
yaml.explicit_start = explicit_start
yaml.explicit_end = explicit_end
res = yaml.dump(data, compare=doutp)
return res
def YAML(**kw):
import srsly.ruamel_yaml # NOQA
class MyYAML(srsly.ruamel_yaml.YAML):
"""auto dedent string parameters on load"""
def load(self, stream):
if isinstance(stream, str):
if stream and stream[0] == "\n":
stream = stream[1:]
stream = textwrap.dedent(stream)
return srsly.ruamel_yaml.YAML.load(self, stream)
def load_all(self, stream):
if isinstance(stream, str):
if stream and stream[0] == "\n":
stream = stream[1:]
stream = textwrap.dedent(stream)
for d in srsly.ruamel_yaml.YAML.load_all(self, stream):
yield d
def dump(self, data, **kw):
from srsly.ruamel_yaml.compat import StringIO, BytesIO # NOQA
assert ("stream" in kw) ^ ("compare" in kw)
if "stream" in kw:
return srsly.ruamel_yaml.YAML.dump(data, **kw)
lkw = kw.copy()
expected = textwrap.dedent(lkw.pop("compare"))
unordered_lines = lkw.pop("unordered_lines", False)
if expected and expected[0] == "\n":
expected = expected[1:]
lkw["stream"] = st = StringIO()
srsly.ruamel_yaml.YAML.dump(self, data, **lkw)
res = st.getvalue()
print(res)
if unordered_lines:
res = sorted(res.splitlines())
expected = sorted(expected.splitlines())
assert res == expected
def round_trip(self, stream, **kw):
from srsly.ruamel_yaml.compat import StringIO, BytesIO # NOQA
assert isinstance(stream, (srsly.ruamel_yaml.compat.text_type, str))
lkw = kw.copy()
if stream and stream[0] == "\n":
stream = stream[1:]
stream = textwrap.dedent(stream)
data = srsly.ruamel_yaml.YAML.load(self, stream)
outp = lkw.pop("outp", stream)
lkw["stream"] = st = StringIO()
srsly.ruamel_yaml.YAML.dump(self, data, **lkw)
res = st.getvalue()
if res != outp:
diff(outp, res, "input string")
assert res == outp
def round_trip_all(self, stream, **kw):
from srsly.ruamel_yaml.compat import StringIO, BytesIO # NOQA
assert isinstance(stream, (srsly.ruamel_yaml.compat.text_type, str))
lkw = kw.copy()
if stream and stream[0] == "\n":
stream = stream[1:]
stream = textwrap.dedent(stream)
data = list(srsly.ruamel_yaml.YAML.load_all(self, stream))
outp = lkw.pop("outp", stream)
lkw["stream"] = st = StringIO()
srsly.ruamel_yaml.YAML.dump_all(self, data, **lkw)
res = st.getvalue()
if res != outp:
diff(outp, res, "input string")
assert res == outp
return MyYAML(**kw)
def save_and_run(program, base_dir=None, output=None, file_name=None, optimized=False):
"""
safe and run a python program, thereby circumventing any restrictions on module level
imports
"""
from subprocess import check_output, STDOUT, CalledProcessError
if not hasattr(base_dir, "hash"):
base_dir = Path(str(base_dir))
if file_name is None:
file_name = "safe_and_run_tmp.py"
file_name = base_dir / file_name
file_name.write_text(dedent(program))
try:
cmd = [sys.executable]
if optimized:
cmd.append("-O")
cmd.append(str(file_name))
print("running:", *cmd)
res = check_output(cmd, stderr=STDOUT, universal_newlines=True)
if output is not None:
if "__pypy__" in sys.builtin_module_names:
res = res.splitlines(True)
res = [line for line in res if "no version info" not in line]
res = "".join(res)
print("result: ", res, end="")
print("expected:", output, end="")
assert res == output
except CalledProcessError as exception:
print("##### Running '{} {}' FAILED #####".format(sys.executable, file_name))
print(exception.output)
return exception.returncode
return 0
|
