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"""Command-line interface.
"""
import os
import sys
import subprocess
import tempfile
from common import assert_equal
SAMPLE_SIMPLE_FORMAT = "\n".join(
[
"----- ------ -------------",
"Sun 696000 1.9891e+09",
"Earth 6371 5973.6",
"Moon 1737 73.5",
"Mars 3390 641.85",
"----- ------ -------------",
]
)
SAMPLE_SIMPLE_FORMAT_WITH_HEADERS = "\n".join(
[
"Planet Radius Mass",
"-------- -------- -------------",
"Sun 696000 1.9891e+09",
"Earth 6371 5973.6",
"Moon 1737 73.5",
"Mars 3390 641.85",
]
)
SAMPLE_GRID_FORMAT_WITH_HEADERS = "\n".join(
[
"+----------+----------+---------------+",
"| Planet | Radius | Mass |",
"+==========+==========+===============+",
"| Sun | 696000 | 1.9891e+09 |",
"+----------+----------+---------------+",
"| Earth | 6371 | 5973.6 |",
"+----------+----------+---------------+",
"| Moon | 1737 | 73.5 |",
"+----------+----------+---------------+",
"| Mars | 3390 | 641.85 |",
"+----------+----------+---------------+",
]
)
SAMPLE_GRID_FORMAT_WITH_DOT1E_FLOATS = "\n".join(
[
"+-------+--------+---------+",
"| Sun | 696000 | 2.0e+09 |",
"+-------+--------+---------+",
"| Earth | 6371 | 6.0e+03 |",
"+-------+--------+---------+",
"| Moon | 1737 | 7.4e+01 |",
"+-------+--------+---------+",
"| Mars | 3390 | 6.4e+02 |",
"+-------+--------+---------+",
]
)
def sample_input(sep=" ", with_headers=False):
headers = sep.join(["Planet", "Radius", "Mass"])
rows = [
sep.join(["Sun", "696000", "1.9891e9"]),
sep.join(["Earth", "6371", "5973.6"]),
sep.join(["Moon", "1737", "73.5"]),
sep.join(["Mars", "3390", "641.85"]),
]
all_rows = ([headers] + rows) if with_headers else rows
table = "\n".join(all_rows)
return table
def run_and_capture_stdout(cmd, input=None):
x = subprocess.Popen(
cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE
)
input_buf = input.encode() if input else None
out, err = x.communicate(input=input_buf)
out = out.decode("utf-8")
if x.returncode != 0:
raise OSError(err)
return out
class TemporaryTextFile:
def __init__(self):
self.tmpfile = None
def __enter__(self):
self.tmpfile = tempfile.NamedTemporaryFile(
"w+", prefix="tabulate-test-tmp-", delete=False
)
return self.tmpfile
def __exit__(self, exc_type, exc_val, exc_tb):
if self.tmpfile:
self.tmpfile.close()
os.unlink(self.tmpfile.name)
def test_script_from_stdin_to_stdout():
"""Command line utility: read from stdin, print to stdout"""
cmd = [sys.executable, "tabulate/__init__.py"]
out = run_and_capture_stdout(cmd, input=sample_input())
expected = SAMPLE_SIMPLE_FORMAT
print("got: ", repr(out))
print("expected:", repr(expected))
assert_equal(out.splitlines(), expected.splitlines())
def test_script_from_file_to_stdout():
"""Command line utility: read from file, print to stdout"""
with TemporaryTextFile() as tmpfile:
tmpfile.write(sample_input())
tmpfile.seek(0)
cmd = [sys.executable, "tabulate/__init__.py", tmpfile.name]
out = run_and_capture_stdout(cmd)
expected = SAMPLE_SIMPLE_FORMAT
print("got: ", repr(out))
print("expected:", repr(expected))
assert_equal(out.splitlines(), expected.splitlines())
def test_script_from_file_to_file():
"""Command line utility: read from file, write to file"""
with TemporaryTextFile() as input_file:
with TemporaryTextFile() as output_file:
input_file.write(sample_input())
input_file.seek(0)
cmd = [
sys.executable,
"tabulate/__init__.py",
"-o",
output_file.name,
input_file.name,
]
out = run_and_capture_stdout(cmd)
# check that nothing is printed to stdout
expected = ""
print("got: ", repr(out))
print("expected:", repr(expected))
assert_equal(out.splitlines(), expected.splitlines())
# check that the output was written to file
output_file.seek(0)
out = output_file.file.read()
expected = SAMPLE_SIMPLE_FORMAT
print("got: ", repr(out))
print("expected:", repr(expected))
assert_equal(out.splitlines(), expected.splitlines())
def test_script_header_option():
"""Command line utility: -1, --header option"""
for option in ["-1", "--header"]:
cmd = [sys.executable, "tabulate/__init__.py", option]
raw_table = sample_input(with_headers=True)
out = run_and_capture_stdout(cmd, input=raw_table)
expected = SAMPLE_SIMPLE_FORMAT_WITH_HEADERS
print(out)
print("got: ", repr(out))
print("expected:", repr(expected))
assert_equal(out.splitlines(), expected.splitlines())
def test_script_sep_option():
"""Command line utility: -s, --sep option"""
for option in ["-s", "--sep"]:
cmd = [sys.executable, "tabulate/__init__.py", option, ","]
raw_table = sample_input(sep=",")
out = run_and_capture_stdout(cmd, input=raw_table)
expected = SAMPLE_SIMPLE_FORMAT
print("got: ", repr(out))
print("expected:", repr(expected))
assert_equal(out.splitlines(), expected.splitlines())
def test_script_floatfmt_option():
"""Command line utility: -F, --float option"""
for option in ["-F", "--float"]:
cmd = [
sys.executable,
"tabulate/__init__.py",
option,
".1e",
"--format",
"grid",
]
raw_table = sample_input()
out = run_and_capture_stdout(cmd, input=raw_table)
expected = SAMPLE_GRID_FORMAT_WITH_DOT1E_FLOATS
print("got: ", repr(out))
print("expected:", repr(expected))
assert_equal(out.splitlines(), expected.splitlines())
def test_script_format_option():
"""Command line utility: -f, --format option"""
for option in ["-f", "--format"]:
cmd = [sys.executable, "tabulate/__init__.py", "-1", option, "grid"]
raw_table = sample_input(with_headers=True)
out = run_and_capture_stdout(cmd, input=raw_table)
expected = SAMPLE_GRID_FORMAT_WITH_HEADERS
print(out)
print("got: ", repr(out))
print("expected:", repr(expected))
assert_equal(out.splitlines(), expected.splitlines())
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