#copyright ReportLab Inc. 2000-2001
#see license.txt for license details
#history http://cvs.sourceforge.net/cgi-bin/cvsweb.cgi/reportlab/test/test_widgetbase_tpc.py?cvsroot=reportlab
#$Header: /cvsroot/reportlab/reportlab/test/test_widgetbase_tpc.py,v 1.1 2001/06/07 15:27:03 rgbecker Exp $
"""
Tests for TypedPropertyCollection class.
"""

import os, sys, copy, tempfile
from os.path import join, basename, splitext

from reportlab.graphics.widgetbase import PropHolder, TypedPropertyCollection
from reportlab.lib.attrmap import AttrMap, AttrMapValue
from reportlab.lib.validators import isNumber
from reportlab.test import unittest


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 test1(self):
		"Test setting an invalid collective attribute."

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

	def test2(self):
		"Test setting a valid collective attribute."

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


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

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


	def test4(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 test5(self):
		"Test accessing an unset collective attribute."

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


	def test6(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 test7(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 test8(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():
	suite = unittest.TestSuite()

	suite.addTest(TPCTestCase('test1'))
	suite.addTest(TPCTestCase('test2'))
	suite.addTest(TPCTestCase('test3'))
	suite.addTest(TPCTestCase('test4'))
	suite.addTest(TPCTestCase('test5'))
	suite.addTest(TPCTestCase('test6'))
	suite.addTest(TPCTestCase('test7'))
	suite.addTest(TPCTestCase('test8'))

	return suite


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