import os import sys import textwrap import unittest import subprocess from test import support from test.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 = textwrap.dedent("""\ [ [ "blorpie" ], [ "whoops" ], [], "d-shtaeou", "d-nthiouh", "i-vhbjkhnth", { "nifty": 87 }, { "field": "yes", "morefield": false } ] """) def test_stdin_stdout(self): with subprocess.Popen( (sys.executable, '-m', 'json.tool'), stdin=subprocess.PIPE, stdout=subprocess.PIPE) as proc: out, err = proc.communicate(self.data.encode()) self.assertEqual(out.splitlines(), self.expect.encode().splitlines()) self.assertEqual(err, None) 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(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(out, b'') self.assertEqual(err, b'')