import os

import infra.basetest


class TestPythonBase(infra.basetest.BRTest):
    config = infra.basetest.BASIC_TOOLCHAIN_CONFIG + \
        """
        BR2_TARGET_ROOTFS_CPIO=y
        # BR2_TARGET_ROOTFS_TAR is not set
        """
    interpreter = "python"

    def login(self):
        cpio_file = os.path.join(self.builddir, "images", "rootfs.cpio")
        self.emulator.boot(arch="armv5",
                           kernel="builtin",
                           options=["-initrd", cpio_file])
        self.emulator.login()

    def version_test(self, version, timeout=-1):
        cmd = self.interpreter + " --version 2>&1 | grep '^{}'".format(version)
        _, exit_code = self.emulator.run(cmd, timeout)
        self.assertEqual(exit_code, 0)

    def math_floor_test(self, timeout=-1):
        cmd = self.interpreter + " -c 'import math; math.floor(12.3)'"
        _, exit_code = self.emulator.run(cmd, timeout)
        self.assertEqual(exit_code, 0)

    def libc_time_test(self, timeout=-1):
        cmd = self.interpreter + " -c 'from __future__ import print_function;"
        cmd += "import ctypes;"
        cmd += "libc = ctypes.cdll.LoadLibrary(\"libc.so.1\");"
        cmd += "print(libc.time(None))'"
        _, exit_code = self.emulator.run(cmd, timeout)
        self.assertEqual(exit_code, 0)

    def zlib_test(self, timeout=-1):
        cmd = self.interpreter + " -c 'import zlib'"
        _, exit_code = self.emulator.run(cmd, timeout)
        self.assertEqual(exit_code, 1)


class TestPython2(TestPythonBase):
    config = TestPythonBase.config + \
        """
        BR2_PACKAGE_PYTHON=y
        """

    def test_run(self):
        self.login()
        self.version_test("Python 2")
        self.math_floor_test()
        self.libc_time_test()
        self.zlib_test()


class TestPython3(TestPythonBase):
    config = TestPythonBase.config + \
        """
        BR2_PACKAGE_PYTHON3=y
        """

    def test_run(self):
        self.login()
        self.version_test("Python 3")
        self.math_floor_test()
        self.libc_time_test()
        self.zlib_test()