cpython/Lib/test/test_json/test_tool.py

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import os
import sys
import textwrap
import unittest
from subprocess import Popen, PIPE
from test import support
from test.support.script_helper import assert_python_ok
class TestTool(unittest.TestCase):
data = """
[["blorpie"],[ "whoops" ] , [
],\t"d-shtaeou",\r"d-nthiouh",
"i-vhbjkhnth", {"nifty":87}, {"morefield" :\tfalse,"field"
:"yes"} ]
"""
expect_without_sort_keys = textwrap.dedent("""\
[
[
"blorpie"
],
[
"whoops"
],
[],
"d-shtaeou",
"d-nthiouh",
"i-vhbjkhnth",
{
"nifty": 87
},
{
"field": "yes",
"morefield": false
}
]
""")
expect = textwrap.dedent("""\
[
[
"blorpie"
],
[
"whoops"
],
[],
"d-shtaeou",
"d-nthiouh",
"i-vhbjkhnth",
{
"nifty": 87
},
{
"morefield": false,
"field": "yes"
}
]
""")
def test_stdin_stdout(self):
args = sys.executable, '-m', 'json.tool'
with Popen(args, stdin=PIPE, stdout=PIPE, stderr=PIPE) as proc:
out, err = proc.communicate(self.data.encode())
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self.assertEqual(out.splitlines(), self.expect.encode().splitlines())
self.assertEqual(err, b'')
def _create_infile(self):
infile = support.TESTFN
with open(infile, "w") as fp:
self.addCleanup(os.remove, infile)
fp.write(self.data)
return infile
def test_infile_stdout(self):
infile = self._create_infile()
rc, out, err = assert_python_ok('-m', 'json.tool', infile)
self.assertEqual(rc, 0)
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self.assertEqual(out.splitlines(), self.expect.encode().splitlines())
self.assertEqual(err, b'')
def test_infile_outfile(self):
infile = self._create_infile()
outfile = support.TESTFN + '.out'
rc, out, err = assert_python_ok('-m', 'json.tool', infile, outfile)
self.addCleanup(os.remove, outfile)
with open(outfile, "r") as fp:
self.assertEqual(fp.read(), self.expect)
self.assertEqual(rc, 0)
self.assertEqual(out, b'')
self.assertEqual(err, b'')
def test_help_flag(self):
rc, out, err = assert_python_ok('-m', 'json.tool', '-h')
self.assertEqual(rc, 0)
self.assertTrue(out.startswith(b'usage: '))
self.assertEqual(err, b'')
def test_sort_keys_flag(self):
infile = self._create_infile()
rc, out, err = assert_python_ok('-m', 'json.tool', '--sort-keys', infile)
self.assertEqual(rc, 0)
self.assertEqual(out.splitlines(),
self.expect_without_sort_keys.encode().splitlines())
self.assertEqual(err, b'')