Method test_context_manager

Lib/test/test_fileinput.py:346–354

(self)

        self.assertEqual(result, "I used to receive only filename and mode")

    def test_context_manager(self):
        t1 = self.writeTmp("A\nB\nC")
        t2 = self.writeTmp("D\nE\nF")
        with FileInput(files=(t1, t2), encoding="utf-8") as fi:
            lines = list(fi)
        self.assertEqual(lines, ["A\n", "B\n", "C", "D\n", "E\n", "F"])
        self.assertEqual(fi.filelineno(), 3)
        self.assertEqual(fi.lineno(), 6)
        self.assertEqual(fi._files, ())

    def test_close_on_exception(self):
        t1 = self.writeTmp("")