#Copyright ReportLab Europe Ltd. 2000-2008
#see license.txt for license details
"""
Tests for TypedPropertyCollection class.
"""
__version__='''$Id: test_widgetbase_tpc.py 3288 2008-09-15 11:03:17Z rgbecker $'''
from reportlab.lib.testutils import setOutDir,makeSuiteForClasses, printLocation
setOutDir(__name__)
import os, sys, copy
from os.path import join, basename, splitext
import unittest
from reportlab.graphics.widgetbase import PropHolder, TypedPropertyCollection
from reportlab.lib.attrmap import AttrMap, AttrMapValue
from reportlab.lib.validators import isNumber


TPC = TypedPropertyCollection


class PH(PropHolder):
    _attrMap = AttrMap(
        a = AttrMapValue(isNumber),
        b = AttrMapValue(isNumber)
        )


class APH(PH):
    def __init__(self):
        self.a = 1


class BPH(APH):
    def __init__(self):
        APH.__init__(self)

    def __getattr__(self,name):
        if name=='b': return -1
        raise AttributeError


class TPCTestCase(unittest.TestCase):
    "Test TypedPropertyCollection class."

    def test0(self):
        "Test setting an invalid collective attribute."

        t = TPC(PH)
        try:
            t.c = 42
        except AttributeError:
            pass


    def test1(self):
        "Test setting a valid collective attribute."

        t = TPC(PH)
        t.a = 42
        assert t.a == 42


    def test2(self):
        "Test setting a valid collective attribute with an invalid value."

        t = TPC(PH)
        try:
            t.a = 'fourty-two'
        except AttributeError:
            pass


    def test3(self):
        "Test setting a valid collective attribute with a convertible invalid value."

        t = TPC(PH)
        t.a = '42'
        assert t.a == '42' # Or should it rather be an integer?


    def test4(self):
        "Test accessing an unset collective attribute."

        t = TPC(PH)
        try:
            t.a
        except AttributeError:
            pass


    def test5(self):
        "Test overwriting a collective attribute in one slot."

        t = TPC(PH)
        t.a = 42
        t[0].a = 4242
        assert t[0].a == 4242


    def test6(self):
        "Test overwriting a one slot attribute with a collective one."

        t = TPC(PH)
        t[0].a = 4242
        t.a = 42
        assert t[0].a == 4242


    def test7(self):
        "Test to ensure we can handle classes with __getattr__ methods"

        a=TypedPropertyCollection(APH)
        b=TypedPropertyCollection(BPH)

        a.a=3
        b.a=4
        try:
            a.b
            assert 1, "Shouldn't be able to see a.b"
        except AttributeError:
            pass
        a.b=0
        assert a.b==0, "Wrong value for "+str(a.b)
        assert b.b==-1, "This should call __getattr__ special"
        b.b=0
        assert a[0].b==0
        assert b[0].b==-1, "Class __getattr__ should return -1"


def makeSuite():
    return makeSuiteForClasses(TPCTestCase)


#noruntests
if __name__ == "__main__":
    unittest.TextTestRunner().run(makeSuite())
    printLocation()
