#!/usr/bin/env python
#     Copyright 2016, Kay Hayen, mailto:kay.hayen@gmail.com
#
#     Part of "Nuitka", an optimizing Python compiler that is compatible and
#     integrates with CPython, but also works on its own.
#
#     Licensed under the Apache License, Version 2.0 (the "License");
#     you may not use this file except in compliance with the License.
#     You may obtain a copy of the License at
#
#        http://www.apache.org/licenses/LICENSE-2.0
#
#     Unless required by applicable law or agreed to in writing, software
#     distributed under the License is distributed on an "AS IS" BASIS,
#     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#     See the License for the specific language governing permissions and
#     limitations under the License.
#

""" Main front-end to the tests of Nuitka.

Has many options, read --help output.
"""

from __future__ import print_function

import os, sys, tempfile, subprocess

if "nocheck" in os.environ.get("DEB_BUILD_OPTIONS", "").split():
    print("Skipped all tests as per DEB_BUILD_OPTIONS environment.")
    sys.exit(0)

from optparse import OptionParser

parser = OptionParser()

parser.add_option(
    "--skip-basic-tests",
    action  = "store_false",
    dest    = "basic_tests",
    default = True,
    help    = """\
The basic tests, execute these to check if Nuitka is healthy. Default
is %default."""
)

parser.add_option(
    "--skip-syntax-tests",
    action  = "store_false",
    dest    = "syntax_tests",
    default = True,
    help    = """\
The syntax tests, execute these to check if Nuitka handles Syntax errors fine.
Default is %default."""
)

parser.add_option(
    "--skip-program-tests",
    action  = "store_false",
    dest    = "program_tests",
    default = True,
    help    = """\
The programs tests, execute these to check if Nuitka handles programs, e.g.
import recursions, etc. fine. Default is %default."""
)

parser.add_option(
    "--skip-package-tests",
    action  = "store_false",
    dest    = "package_tests",
    default = True,
    help    = """\
The packages tests, execute these to check if Nuitka handles packages, e.g.
import recursions, etc. fine. Default is %default."""
)

parser.add_option(
    "--skip-optimizations-tests",
    action  = "store_false",
    dest    = "optimization_tests",
    default = True,
    help    = """\
The optimization tests, execute these to check if Nuitka does optimize certain
constructs fully away. Default is %default."""
)

parser.add_option(
    "--skip-standalone-tests",
    action  = "store_false",
    dest    = "standalone_tests",
    default = os.name != "posix" or os.uname()[0] != "NetBSD",
    help    = """\
The standalone tests, execute these to check if Nuitka standalone mode, e.g.
not referring to outside, important 3rd library packages like PyQt fine.
Default is %default."""
)

parser.add_option(
    "--skip-reflection-test",
    action  = "store_false",
    dest    = "reflection_test",
    default = True,
    help    = """\
The reflection test compiles Nuitka with Nuitka, and then Nuitka with the
compile Nuitka and compares the outputs. Default is %default."""
)

parser.add_option(
    "--skip-cpython26-tests",
    action  = "store_false",
    dest    = "cpython26",
    default = True,
    help    = """\
The standard CPython2.6 test suite. Execute this for all corner cases to be
covered. With Python 2.7 this covers exception behavior quite well. Default
is %default."""
)

parser.add_option(
    "--skip-cpython27-tests",
    action  = "store_false",
    dest    = "cpython27",
    default = True,
    help    = """\
The standard CPython2.7 test suite. Execute this for all corner cases to be
covered. With Python 2.6 these are not run. Default is %default."""
)

parser.add_option(
    "--skip-cpython32-tests",
    action  = "store_false",
    dest    = "cpython32",
    default = True,
    help    = """\
The standard CPython3.2 test suite. Execute this for all corner cases to be
covered. With Python 2.6 these are not run. Default is %default."""
)

parser.add_option(
    "--skip-cpython33-tests",
    action  = "store_false",
    dest    = "cpython33",
    default = True,
    help    = """\
The standard CPython3.3 test suite. Execute this for all corner cases to be
covered. With Python 2.x these are not run. Default is %default."""
)

parser.add_option(
    "--skip-cpython34-tests",
    action  = "store_false",
    dest    = "cpython34",
    default = True,
    help    = """\
The standard CPython3.4 test suite. Execute this for all corner cases to be
covered. With Python 2.x these are not run. Default is %default."""
)

parser.add_option(
    "--skip-cpython35-tests",
    action  = "store_false",
    dest    = "cpython35",
    default = True,
    help    = """\
The standard CPython3.5 test suite. Execute this for all corner cases to be
covered. With Python 2.x these are not run. Default is %default."""
)

parser.add_option(
    "--skip-cpython36-tests",
    action  = "store_false",
    dest    = "cpython36",
    default = True,
    help    = """\
The standard CPython3.6 test suite. Execute this for all corner cases to be
covered. With Python 2.x these are not run. Default is %default."""
)


parser.add_option(
    "--no-python2.6",
    action  = "store_true",
    dest    = "no26",
    default = False,
    help    = """\
Do not use Python2.6 even if available on the system. Default is %default."""
)


parser.add_option(
    "--no-python2.7",
    action  = "store_true",
    dest    = "no27",
    default = False,
    help    = """\
Do not use Python2.7 even if available on the system. Default is %default."""
)

parser.add_option(
    "--no-python3.2",
    action  = "store_true",
    dest    = "no32",
    default = False,
    help    = """\
Do not use Python3.2 even if available on the system. Default is %default."""
)

parser.add_option(
    "--no-python3.3",
    action  = "store_true",
    dest    = "no33",
    default = False,
    help    = """\
Do not use Python3.3 even if available on the system. Default is %default."""
)

parser.add_option(
    "--no-python3.4",
    action  = "store_true",
    dest    = "no34",
    default = False,
    help    = """\
Do not use Python3.4 even if available on the system. Default is %default."""
)

parser.add_option(
    "--no-python3.5",
    action  = "store_true",
    dest    = "no35",
    default = False,
    help    = """\
Do not use Python3.5 even if available on the system. Default is %default."""
)

parser.add_option(
    "--no-python3.6",
    action  = "store_true",
    dest    = "no36",
    default = False,
    help    = """\
Do not use Python3.6 even if available on the system. Default is %default."""
)

parser.add_option(
    "--coverage",
    action  = "store_true",
    dest    = "coverage",
    default = False,
    help    = """\
Make a coverage analysis, that does not really check. Default is %default."""
)


options, positional_args = parser.parse_args()

if positional_args:
    parser.print_help()

    sys.exit("\nError, no positional argument allowed.")

# Go its own directory, to have it easy with path knowledge.
os.chdir(os.path.dirname(os.path.abspath(__file__)))
os.chdir("..")

if options.coverage and os.path.exists(".coverage"):
    os.unlink(".coverage")

# Add the local bin directory to search path start.
os.environ["PATH"] = \
  os.path.join(
    os.getcwd(),
    "bin" ) + \
  os.pathsep + \
  os.environ["PATH"]

def checkExecutableCommand(command):
    """ Check if a command is executable. """

    # Many cases, pylint: disable=R0911,R0912

    # Do respect given options to disable specific Python versions
    if command == "python2.6" and options.no26:
        return False
    if command == "python2.7" and options.no27:
        return False
    if command == "python3.2" and options.no32:
        return False
    if command == "python3.3" and options.no33:
        return False
    if command == "python3.4" and options.no34:
        return False
    if command == "python3.5" and options.no35:
        return False
    if command == "python3.5" and options.no36:
        return False

    # Shortcuts for python versions, also needed for Windows as it won't have
    # the version number in the Python binaries at all.
    if command == "python2.6" and sys.version_info[0:2] == (2,6):
        return True
    if command == "python2.7" and sys.version_info[0:2] == (2,7):
        return True
    if command == "python3.2" and sys.version_info[0:2] == (3,2):
        return True
    if command == "python3.3" and sys.version_info[0:2] == (3,3):
        return True
    if command == "python3.4" and sys.version_info[0:2] == (3,4):
        return True
    if command == "python3.5" and sys.version_info[0:2] == (3,5):
        return True
    if command == "python3.6" and sys.version_info[0:2] == (3,6):
        return True

    path = os.environ[ "PATH" ]

    suffixes = (".exe",) if os.name == "nt" else ("",)

    for part in path.split(os.pathsep):
        if not part:
            continue

        for suffix in suffixes:
            if os.path.exists(os.path.join(part, command + suffix)):
                return True

    return False

def setExtraFlags(where, name, flags):
    if where is not None:
        tmp_dir = tempfile.gettempdir()

        # Try to avoid RAM disk /tmp and use the disk one instead.
        if tmp_dir == "/tmp" and os.path.exists("/var/tmp"):
            tmp_dir = "/var/tmp"

        where = os.path.join(tmp_dir, name, where)

        if not os.path.exists(where):
            os.makedirs(where)

        os.environ[ "NUITKA_EXTRA_OPTIONS" ] = flags + " --output-dir=" + where
    else:
        os.environ[ "NUITKA_EXTRA_OPTIONS" ] = flags

def executeSubTest(command, hide_output = False):
    if options.coverage and "search" in command:
        command = command.replace("search", "coverage")

    parts = command.split()
    parts[0] = parts[0].replace('/', os.path.sep)

    # On Windows, we need to specify Python ourselves.
    if os.name == "nt":
        parts.insert(0, sys.executable)

    print("Run '%s' in '%s'." % (' '.join(parts), os.getcwd()))

    sys.stdout.flush()

    if hide_output:
        result = subprocess.call(
            parts,
            stdout = open(os.devnull, 'w')
        )
    else:
        result = subprocess.call(
            parts
        )


    if result != 0:
        sys.exit(result)

def execute_tests(where, use_python, flags):
    # Many cases, pylint: disable=R0912,R0915

    print(
        "Executing test case called %s with CPython %s and extra flags '%s'." % (
            where,
            use_python,
            flags
        )
    )

    if os.name == "nt":
        if use_python == "python2.6":
            if sys.version.startswith("2.6"):
                os.environ[ "PYTHON" ] = sys.executable
            else:
                os.environ[ "PYTHON" ] = r"C:\Python26\python.exe"
        elif use_python == "python2.7":
            if sys.version.startswith("2.7"):
                os.environ[ "PYTHON" ] = sys.executable
            else:
                os.environ[ "PYTHON" ] = r"C:\Python27\python.exe"
        elif use_python == "python3.2":
            if sys.version.startswith("3.2"):
                os.environ[ "PYTHON" ] = sys.executable
            else:
                os.environ[ "PYTHON" ] = r"C:\Python32\python.exe"
        elif use_python == "python3.3":
            if sys.version.startswith("3.3"):
                os.environ[ "PYTHON" ] = sys.executable
            else:
                os.environ[ "PYTHON" ] = r"C:\Python33\python.exe"
        elif use_python == "python3.4":
            if sys.version.startswith("3.4"):
                os.environ[ "PYTHON" ] = sys.executable
            else:
                os.environ[ "PYTHON" ] = r"C:\Python34\python.exe"
        else:
            assert False, use_python
    else:
        os.environ[ "PYTHON" ] = use_python

    if options.basic_tests:
        print("Running the basic tests with options '%s' with %s:"  % (flags, use_python))
        setExtraFlags(where, "basics", flags)
        executeSubTest("./tests/basics/run_all.py search")

    if options.syntax_tests:
        print("Running the syntax tests with options '%s' with %s:"  % (flags, use_python))
        setExtraFlags(where, "syntax", flags)
        executeSubTest("./tests/syntax/run_all.py search")

    if options.program_tests:
        print("Running the program tests with options '%s' with %s:" % (flags, use_python))
        setExtraFlags(where, "programs", flags)
        executeSubTest("./tests/programs/run_all.py search")

    if options.package_tests:
        print("Running the package tests with options '%s' with %s:" % (flags, use_python))
        setExtraFlags(where, "packages", flags)
        executeSubTest("./tests/packages/run_all.py search")

    # At least one Debian Jessie, these versions won't have lxml installed, so
    # don't run them there. Also these won't be very version dependent in their
    # results.
    if use_python != "python2.6" and use_python != "python3.2":
        if options.optimization_tests:
            print("Running the optimizations tests with options '%s' with %s:" % (flags, use_python))
            setExtraFlags(where, "optimizations", flags)
            executeSubTest("./tests/optimizations/run_all.py search")

    if options.standalone_tests and not options.coverage:
        print("Running the standalone tests with options '%s' with %s:" % (flags, use_python))
        setExtraFlags(None, "standalone", flags)
        executeSubTest("./tests/standalone/run_all.py search")

    if options.reflection_test and not options.coverage:
        print("Running the reflection test with options '%s' with %s:" % (flags, use_python))
        setExtraFlags(None, "reflected", flags)
        executeSubTest("./tests/reflected/compile_itself.py search")

    if not use_python.startswith("python3"):
        if os.path.exists("./tests/CPython26/run_all.py"):
            if options.cpython26:
                print("Running the CPython 2.6 tests with options '%s' with %s:" % (flags, use_python))

                setExtraFlags(where, "26tests", flags)
                executeSubTest("./tests/CPython26/run_all.py search")
        else:
            print("The CPython2.6 tests are not present, not run.")

        # Running the Python 2.7 test suite with CPython 2.6 gives little
        # insight, because "importlib" will not be there and that's it.
        if use_python != "python2.6":
            if os.path.exists("./tests/CPython27/run_all.py"):
                if options.cpython27:
                    print("Running the CPython 2.7 tests with options '%s' with %s:" % (flags, use_python))
                    setExtraFlags(where, "27tests", flags)
                    executeSubTest("./tests/CPython27/run_all.py search")
            else:
                print("The CPython2.7 tests are not present, not run.")

    if "--debug" not in flags:
        # Not running the Python 3.2 test suite with CPython2.6, as that's about
        # the same as CPython2.7 and won't have any new insights.
        if use_python != "python2.6" and \
           use_python != "python2.7" or not options.coverage:
            if os.path.exists("./tests/CPython32/run_all.py"):
                if options.cpython32:
                    setExtraFlags(where, "32tests", flags)
                    executeSubTest("./tests/CPython32/run_all.py search")
            else:
                print("The CPython3.2 tests are not present, not run.")

        # Running the Python 3.3 test suite only with CPython3.x.
        if not use_python.startswith("python2"):
            if os.path.exists("./tests/CPython33/run_all.py"):
                if options.cpython33:
                    setExtraFlags(where, "33tests", flags)
                    executeSubTest("./tests/CPython33/run_all.py search")
            else:
                print("The CPython3.3 tests are not present, not run.")

        # Running the Python 3.4 test suite only with CPython3.x.
        if not use_python.startswith("python2"):
            if os.path.exists("./tests/CPython34/run_all.py"):
                if options.cpython34:
                    setExtraFlags(where, "34tests", flags)
                    executeSubTest("./tests/CPython34/run_all.py search")
            else:
                print("The CPython3.4 tests are not present, not run.")

        # Running the Python 3.4 test suite only with CPython3.x.
        if not use_python.startswith("python2"):
            if os.path.exists("./tests/CPython35/run_all.py"):
                if options.cpython35:
                    setExtraFlags(where, "35tests", flags)
                    executeSubTest("./tests/CPython35/run_all.py search")
            else:
                print("The CPython3.5 tests are not present, not run.")

        # Running the Python 3.4 test suite only with CPython3.x.
        if not use_python.startswith("python2"):
            if os.path.exists("./tests/CPython36/run_all.py"):
                if options.cpython36:
                    setExtraFlags(where, "36tests", flags)
                    executeSubTest("./tests/CPython36/run_all.py search")
            else:
                print("The CPython3.6 tests are not present, not run.")

    if "NUITKA_EXTRA_OPTIONS" in os.environ:
        del os.environ[ "NUITKA_EXTRA_OPTIONS" ]

assert checkExecutableCommand("python2.6") or \
       checkExecutableCommand("python2.7") or \
       checkExecutableCommand("python3.2") or \
       checkExecutableCommand("python3.3") or \
       checkExecutableCommand("python3.4") or \
       checkExecutableCommand("python3.5") or \
       checkExecutableCommand("python3.6")

# Just the quick syntax test, full tests are run later.
if checkExecutableCommand("python3.2"):
    executeSubTest(
        "bin/nuitka --python-version=3.2 --version",
        hide_output = True
    )

if checkExecutableCommand("python2.6"):
    execute_tests("python2.6-debug", "python2.6", "--debug")
else:
    print("Cannot execute tests with Python 2.6, disabled or not installed.")

if checkExecutableCommand("python2.7"):
    execute_tests("python2.7-debug", "python2.7", "--debug")
else:
    print("Cannot execute tests with Python 2.7, disabled or not installed.")

# Temporary measure, the nodebug tests pass, debug doesn't for the CPython3.2
# test suite without unused closure variable removal.
if False and checkExecutableCommand("python3.2"):
    execute_tests("python3.2-debug", "python3.2", "--debug")
else:
    print("Cannot execute tests with Python 3.2, disabled or not installed.")

if checkExecutableCommand("python2.6"):
    execute_tests("python2.6-nodebug", "python2.6", "")
else:
    print("Cannot execute tests with Python 2.6, disabled or not installed.")

if checkExecutableCommand("python2.7"):
    execute_tests("python2.7-nodebug", "python2.7", "")
else:
    print("Cannot execute tests with Python 2.7, disabled or not installed.")

if checkExecutableCommand("python3.2"):
    execute_tests("python3.2-nodebug", "python3.2", "")
else:
    print("Cannot execute tests with Python 3.2, disabled or not installed.")

if checkExecutableCommand("python3.3"):
    execute_tests("python3.3-nodebug", "python3.3", "")
else:
    print("Cannot execute tests with Python 3.3, disabled or not installed.")

if checkExecutableCommand("python3.4"):
    execute_tests("python3.4-nodebug", "python3.4", "")
else:
    print("Cannot execute tests with Python 3.4, disabled or not installed.")

if checkExecutableCommand("python3.5"):
    execute_tests("python3.5-nodebug", "python3.5", "")
else:
    print("Cannot execute tests with Python 3.5, disabled or not installed.")

if checkExecutableCommand("python3.6"):
    execute_tests("python3.6-nodebug", "python3.6", "")
else:
    print("Cannot execute tests with Python 3.6, disabled or not installed.")

if options.coverage:
    def copyToGlobalCoverageData(source, target):
        coverage_dir = os.environ.get("COVERAGE_DIR", None)

        if coverage_dir is None:
            return

        assert 0 == subprocess.call(
            (
                "C:\\MinGW\\msys\\1.0\\bin\\scp.exe"
                   if os.name == "nt" else
                "scp",
                source,
                os.path.join(
                    coverage_dir,
                    target
                )
            )
        )

    if os.name == "nt":
        suffix = "win"
    else:
        import platform
        suffix = platform.uname()[0] + '.' + platform.uname()[4]

    with open("data.coverage", "w") as data_file:
        source_dir = os.path.abspath(os.path.dirname(os.path.dirname(__file__)))

        data_file.write("NUITKA_SOURCE_DIR='%s'\n" % source_dir)

        nuitka_id = subprocess.check_output(
            "cd '%s'; git rev-parse HEAD" % source_dir,
            shell = True
        )
        nuitka_id = nuitka_id.strip()

        if sys.version_info > (3,):
            nuitka_id = nuitka_id.decode()

        data_file.write("NUITKA_COMMIT='%s'\n" % nuitka_id)

    copyToGlobalCoverageData("data.coverage", "data.coverage." + suffix)
    copyToGlobalCoverageData(".coverage", ".coverage." + suffix)

print("OK.")
