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https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
960662404f
At present the Fdt class has its own copy of the device tree. This is confusing an unnecessary now that pylibfdt has its own. Drop it and provide access functions to the buffer. This allows us to move the rest of the implementation to use pylibfdt methods instead of directly calling libfdt stubs. Signed-off-by: Simon Glass <sjg@chromium.org>
247 lines
7.8 KiB
Python
Executable File
247 lines
7.8 KiB
Python
Executable File
#!/usr/bin/python
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# SPDX-License-Identifier: GPL-2.0+
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# Copyright (c) 2018 Google, Inc
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# Written by Simon Glass <sjg@chromium.org>
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#
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from optparse import OptionParser
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import glob
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import os
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import sys
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import unittest
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# Bring in the patman libraries
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our_path = os.path.dirname(os.path.realpath(__file__))
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for dirname in ['../patman', '..']:
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sys.path.insert(0, os.path.join(our_path, dirname))
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import command
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import fdt
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from fdt import TYPE_BYTE, TYPE_INT, TYPE_STRING, TYPE_BOOL
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from fdt_util import fdt32_to_cpu
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import libfdt
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import test_util
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import tools
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class TestFdt(unittest.TestCase):
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"""Tests for the Fdt module
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This includes unit tests for some functions and functional tests for the fdt
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module.
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"""
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@classmethod
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def setUpClass(cls):
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tools.PrepareOutputDir(None)
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@classmethod
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def tearDownClass(cls):
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tools._FinaliseForTest()
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def setUp(self):
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self.dtb = fdt.FdtScan('tools/dtoc/dtoc_test_simple.dts')
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def testFdt(self):
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"""Test that we can open an Fdt"""
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self.dtb.Scan()
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root = self.dtb.GetRoot()
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self.assertTrue(isinstance(root, fdt.Node))
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def testGetNode(self):
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"""Test the GetNode() method"""
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node = self.dtb.GetNode('/spl-test')
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self.assertTrue(isinstance(node, fdt.Node))
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node = self.dtb.GetNode('/i2c@0/pmic@9')
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self.assertTrue(isinstance(node, fdt.Node))
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self.assertEqual('pmic@9', node.name)
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def testFlush(self):
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"""Check that we can flush the device tree out to its file"""
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fname = self.dtb._fname
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with open(fname) as fd:
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data = fd.read()
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os.remove(fname)
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with self.assertRaises(IOError):
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open(fname)
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self.dtb.Flush()
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with open(fname) as fd:
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data = fd.read()
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def testPack(self):
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"""Test that packing a device tree works"""
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self.dtb.Pack()
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def testGetFdt(self):
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"""Tetst that we can access the raw device-tree data"""
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self.assertTrue(isinstance(self.dtb.GetContents(), bytearray))
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def testGetProps(self):
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"""Tests obtaining a list of properties"""
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node = self.dtb.GetNode('/spl-test')
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props = self.dtb.GetProps(node)
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self.assertEqual(['boolval', 'bytearray', 'byteval', 'compatible',
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'intarray', 'intval', 'longbytearray',
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'stringarray', 'stringval', 'u-boot,dm-pre-reloc'],
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sorted(props.keys()))
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def testCheckError(self):
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"""Tests the ChecKError() function"""
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with self.assertRaises(ValueError) as e:
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self.dtb.CheckErr(-libfdt.NOTFOUND, 'hello')
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self.assertIn('FDT_ERR_NOTFOUND: hello', str(e.exception))
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class TestNode(unittest.TestCase):
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"""Test operation of the Node class"""
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@classmethod
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def setUpClass(cls):
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tools.PrepareOutputDir(None)
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@classmethod
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def tearDownClass(cls):
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tools._FinaliseForTest()
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def setUp(self):
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self.dtb = fdt.FdtScan('tools/dtoc/dtoc_test_simple.dts')
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self.node = self.dtb.GetNode('/spl-test')
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def testOffset(self):
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"""Tests that we can obtain the offset of a node"""
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self.assertTrue(self.node.Offset() > 0)
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def testDelete(self):
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"""Tests that we can delete a property"""
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node2 = self.dtb.GetNode('/spl-test2')
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offset1 = node2.Offset()
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self.node.DeleteProp('intval')
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offset2 = node2.Offset()
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self.assertTrue(offset2 < offset1)
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self.node.DeleteProp('intarray')
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offset3 = node2.Offset()
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self.assertTrue(offset3 < offset2)
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def testFindNode(self):
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"""Tests that we can find a node using the _FindNode() functoin"""
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node = self.dtb.GetRoot()._FindNode('i2c@0')
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self.assertEqual('i2c@0', node.name)
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subnode = node._FindNode('pmic@9')
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self.assertEqual('pmic@9', subnode.name)
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class TestProp(unittest.TestCase):
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"""Test operation of the Prop class"""
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@classmethod
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def setUpClass(cls):
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tools.PrepareOutputDir(None)
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@classmethod
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def tearDownClass(cls):
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tools._FinaliseForTest()
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def setUp(self):
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self.dtb = fdt.FdtScan('tools/dtoc/dtoc_test_simple.dts')
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self.node = self.dtb.GetNode('/spl-test')
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self.fdt = self.dtb.GetFdtObj()
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def testGetEmpty(self):
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"""Tests the GetEmpty() function for the various supported types"""
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self.assertEqual(True, fdt.Prop.GetEmpty(fdt.TYPE_BOOL))
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self.assertEqual(chr(0), fdt.Prop.GetEmpty(fdt.TYPE_BYTE))
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self.assertEqual(chr(0) * 4, fdt.Prop.GetEmpty(fdt.TYPE_INT))
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self.assertEqual('', fdt.Prop.GetEmpty(fdt.TYPE_STRING))
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def testGetOffset(self):
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"""Test we can get the offset of a property"""
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prop = self.node.props['longbytearray']
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# Add 12, which is sizeof(struct fdt_property), to get to start of data
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offset = prop.GetOffset() + 12
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data = self.dtb.GetContents()[offset:offset + len(prop.value)]
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bytes = [chr(x) for x in data]
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self.assertEqual(bytes, prop.value)
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def testWiden(self):
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"""Test widening of values"""
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node2 = self.dtb.GetNode('/spl-test2')
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prop = self.node.props['intval']
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# No action
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prop2 = node2.props['intval']
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prop.Widen(prop2)
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self.assertEqual(fdt.TYPE_INT, prop.type)
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self.assertEqual(1, fdt32_to_cpu(prop.value))
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# Convert singla value to array
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prop2 = self.node.props['intarray']
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prop.Widen(prop2)
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self.assertEqual(fdt.TYPE_INT, prop.type)
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self.assertTrue(isinstance(prop.value, list))
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# A 4-byte array looks like a single integer. When widened by a longer
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# byte array, it should turn into an array.
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prop = self.node.props['longbytearray']
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prop2 = node2.props['longbytearray']
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self.assertFalse(isinstance(prop2.value, list))
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self.assertEqual(4, len(prop2.value))
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prop2.Widen(prop)
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self.assertTrue(isinstance(prop2.value, list))
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self.assertEqual(9, len(prop2.value))
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# Similarly for a string array
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prop = self.node.props['stringval']
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prop2 = node2.props['stringarray']
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self.assertFalse(isinstance(prop.value, list))
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self.assertEqual(7, len(prop.value))
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prop.Widen(prop2)
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self.assertTrue(isinstance(prop.value, list))
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self.assertEqual(3, len(prop.value))
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# Enlarging an existing array
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prop = self.node.props['stringarray']
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prop2 = node2.props['stringarray']
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self.assertTrue(isinstance(prop.value, list))
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self.assertEqual(2, len(prop.value))
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prop.Widen(prop2)
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self.assertTrue(isinstance(prop.value, list))
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self.assertEqual(3, len(prop.value))
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def RunTests(args):
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"""Run all the test we have for the fdt model
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Args:
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args: List of positional args provided to fdt. This can hold a test
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name to execute (as in 'fdt -t testFdt', for example)
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"""
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result = unittest.TestResult()
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sys.argv = [sys.argv[0]]
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test_name = args and args[0] or None
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for module in (TestFdt, TestNode, TestProp):
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if test_name:
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try:
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suite = unittest.TestLoader().loadTestsFromName(test_name, module)
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except AttributeError:
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continue
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else:
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suite = unittest.TestLoader().loadTestsFromTestCase(module)
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suite.run(result)
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print result
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for _, err in result.errors:
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print err
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for _, err in result.failures:
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print err
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if __name__ != '__main__':
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sys.exit(1)
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parser = OptionParser()
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parser.add_option('-t', '--test', action='store_true', dest='test',
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default=False, help='run tests')
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(options, args) = parser.parse_args()
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# Run our meagre tests
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if options.test:
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RunTests(args)
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