#!/usr/bin/env python
# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial

'''Test cases for Python representation of C++ enums.'''

import os
import sys
import unittest

from pathlib import Path
sys.path.append(os.fspath(Path(__file__).resolve().parents[1]))
from shiboken_paths import init_paths
init_paths()

# This is needed after the introduction of BUILD_DIR.

import sample
from sample import SampleNamespace, ObjectType, Event


def createTempFile():
    import tempfile
    return tempfile.SpooledTemporaryFile(mode='rw')


class EnumTest(unittest.TestCase):
    '''Test case for Python representation of C++ enums.'''

    @unittest.skipIf(sys.pyside63_option_python_enum, "test not suitable for Python enum")
    def testEnumRepr(self):
        enum = SampleNamespace.Option(1)
        self.assertEqual(eval(repr(enum)), enum)

        enum = SampleNamespace.Option(999)
        self.assertEqual(eval(repr(enum)), enum)

    def testHashability(self):
        self.assertEqual(hash(SampleNamespace.TwoIn), hash(SampleNamespace.TwoOut))
        self.assertNotEqual(hash(SampleNamespace.TwoIn), hash(SampleNamespace.OneIn))

    def testEnumValuesInsideEnum(self):
        '''Enum values should be accessible inside the enum as well as outside.'''
        for value_name in (SampleNamespace.Option.__members__ if sys.pyside63_option_python_enum
                      else SampleNamespace.Option.values):
            enum_item1 = getattr(SampleNamespace.Option, value_name)
            enum_item2 = getattr(SampleNamespace, value_name)
            self.assertEqual(enum_item1, enum_item2)

    def testPassingIntegerOnEnumArgument(self):
        '''Tries to use an integer in place of an enum argument.'''
        self.assertRaises(TypeError, SampleNamespace.getNumber, 1)

    def testBuildingEnumFromIntegerValue(self):
        '''Tries to build the proper enum using an integer.'''
        SampleNamespace.getNumber(SampleNamespace.Option(1))

    def testBuildingEnumWithDefaultValue(self):
        '''Enum constructor with default value'''
        enum = SampleNamespace.Option()
        self.assertEqual(enum, SampleNamespace.None_)

    def testEnumConversionToAndFromPython(self):
        '''Conversion of enum objects from Python to C++ back again.'''
        enumout = SampleNamespace.enumInEnumOut(SampleNamespace.TwoIn)
        self.assertTrue(enumout, SampleNamespace.TwoOut)
        self.assertEqual(repr(enumout), repr(SampleNamespace.TwoOut))

    def testEnumConstructorWithTooManyParameters(self):
        '''Calling the constructor of non-extensible enum with the wrong number of parameters.'''
        self.assertRaises((TypeError, ValueError), SampleNamespace.InValue, 13, 14)

    def testEnumConstructorWithNonNumberParameter(self):
        '''Calling the constructor of non-extensible enum with a string.'''
        self.assertRaises((TypeError, ValueError), SampleNamespace.InValue, '1')

    def testEnumItemAsDefaultValueToIntArgument(self):
        '''Calls function with an enum item as default value to an int argument.'''
        self.assertEqual(SampleNamespace.enumItemAsDefaultValueToIntArgument(),
                         SampleNamespace.ZeroIn)
        self.assertEqual(SampleNamespace.enumItemAsDefaultValueToIntArgument(SampleNamespace.ZeroOut),  # noqa E:501
                         SampleNamespace.ZeroOut)
        self.assertEqual(SampleNamespace.enumItemAsDefaultValueToIntArgument(123), 123)

    def testAnonymousGlobalEnums(self):
        '''Checks availability of anonymous global enum items.'''
        self.assertEqual(sample.AnonymousGlobalEnum_Value0, 0)
        self.assertEqual(sample.AnonymousGlobalEnum_Value1, 1)

    def testAnonymousClassEnums(self):
        '''Checks availability of anonymous class enum items.'''
        self.assertEqual(SampleNamespace.AnonymousClassEnum_Value0, 0)
        self.assertEqual(SampleNamespace.AnonymousClassEnum_Value1, 1)

    def testEnumClasses(self):
        # C++ 11: values of enum classes need to be fully qualified to match C++
        sum = Event.EventTypeClass.Value1 + Event.EventTypeClass.Value2
        self.assertEqual(sum, 1)

    def testSetEnum(self):
        event = Event(Event.ANY_EVENT)
        self.assertEqual(event.eventType(), Event.ANY_EVENT)
        event.setEventType(Event.BASIC_EVENT)
        self.assertEqual(event.eventType(), Event.BASIC_EVENT)
        event.setEventTypeByConstRef(Event.SOME_EVENT)
        self.assertEqual(event.eventType(), Event.SOME_EVENT)
        event.setEventTypeByConstPtr(Event.BASIC_EVENT)
        self.assertEqual(event.eventType(), Event.BASIC_EVENT)

    @unittest.skipIf(sys.pyside63_option_python_enum, "test not suitable for Python enum")
    def testEnumTpPrintImplementation(self):
        '''Without SbkEnum.tp_print 'print' returns the enum represented as an int.'''
        tmpfile = createTempFile()
        print(Event.ANY_EVENT, file=tmpfile)
        tmpfile.seek(0)
        text = tmpfile.read().strip()
        tmpfile.close()
        self.assertEqual(text, str(Event.ANY_EVENT))
        self.assertEqual(text, repr(Event.ANY_EVENT))

    def testEnumArgumentWithDefaultValue(self):
        '''Option enumArgumentWithDefaultValue(Option opt = UnixTime);'''
        self.assertEqual(SampleNamespace.enumArgumentWithDefaultValue(), SampleNamespace.UnixTime)
        self.assertEqual(SampleNamespace.enumArgumentWithDefaultValue(SampleNamespace.RandomNumber),  # noqa E:501
                         SampleNamespace.RandomNumber)

    @unittest.skipIf(sys.pyside63_option_python_enum, "test not suitable for Python enum")
    def testSignature(self):
        enum = SampleNamespace.Option(1)
        types = type(enum).mro()
        klass = types[0]
        base = types[1]
        # The class has an empty signature.

        self.assertEqual(get_signature(klass), None)
        # The base class must be Enum
        self.assertNotEqual(get_signature(base), None)
        # It contains an int annotation.
        param = get_signature(base).parameters["itemValue"]
        self.assertEqual(param.annotation, int)


class MyEvent(Event):
    def __init__(self):
        Event.__init__(self, Event.EventType(3 if sys.pyside63_option_python_enum else 999))


class OutOfBoundsTest(unittest.TestCase):
    def testValue(self):
        e = MyEvent()
        self.assertEqual(repr(e.eventType()), "<EventType.ANY_EVENT: 3>"
            if sys.pyside63_option_python_enum else 'sample.Event.EventType(999)')

    @unittest.skipIf(sys.pyside63_option_python_enum, "test not suitable for Python enum")
    def testNoneName(self):
        e = MyEvent()
        t = e.eventType()
        self.assertEqual(t.name, None)


class EnumOverloadTest(unittest.TestCase):
    '''Test case for overloads involving enums'''

    def testWithInt(self):
        '''Overload with Enums and ints with default value'''
        o = ObjectType()

        self.assertEqual(o.callWithEnum('', Event.ANY_EVENT, 9), 81)
        self.assertEqual(o.callWithEnum('', 9), 9)


class EnumOperators(unittest.TestCase):
    '''Test case for operations on enums'''

    def testInequalitySameObject(self):
        self.assertFalse(Event.ANY_EVENT != Event.ANY_EVENT)


if __name__ == '__main__':
    unittest.main()
