| #!/usr/bin/python |
| # SPDX-License-Identifier: GPL-2.0+ |
| # Copyright (c) 2018 Google, Inc |
| # Written by Simon Glass <sjg@chromium.org> |
| # |
| |
| from optparse import OptionParser |
| import glob |
| import os |
| import sys |
| import unittest |
| |
| # Bring in the patman libraries |
| our_path = os.path.dirname(os.path.realpath(__file__)) |
| for dirname in ['../patman', '..']: |
| sys.path.insert(0, os.path.join(our_path, dirname)) |
| |
| import command |
| import fdt |
| from fdt import TYPE_BYTE, TYPE_INT, TYPE_STRING, TYPE_BOOL |
| import fdt_util |
| from fdt_util import fdt32_to_cpu |
| import libfdt |
| import test_util |
| import tools |
| |
| def _GetPropertyValue(dtb, node, prop_name): |
| """Low-level function to get the property value based on its offset |
| |
| This looks directly in the device tree at the property's offset to find |
| its value. It is useful as a check that the property is in the correct |
| place. |
| |
| Args: |
| node: Node to look in |
| prop_name: Property name to find |
| |
| Returns: |
| Tuple: |
| Prop object found |
| Value of property as a string (found using property offset) |
| """ |
| prop = node.props[prop_name] |
| |
| # Add 12, which is sizeof(struct fdt_property), to get to start of data |
| offset = prop.GetOffset() + 12 |
| data = dtb.GetContents()[offset:offset + len(prop.value)] |
| return prop, [chr(x) for x in data] |
| |
| |
| class TestFdt(unittest.TestCase): |
| """Tests for the Fdt module |
| |
| This includes unit tests for some functions and functional tests for the fdt |
| module. |
| """ |
| @classmethod |
| def setUpClass(cls): |
| tools.PrepareOutputDir(None) |
| |
| @classmethod |
| def tearDownClass(cls): |
| tools._FinaliseForTest() |
| |
| def setUp(self): |
| self.dtb = fdt.FdtScan('tools/dtoc/dtoc_test_simple.dts') |
| |
| def testFdt(self): |
| """Test that we can open an Fdt""" |
| self.dtb.Scan() |
| root = self.dtb.GetRoot() |
| self.assertTrue(isinstance(root, fdt.Node)) |
| |
| def testGetNode(self): |
| """Test the GetNode() method""" |
| node = self.dtb.GetNode('/spl-test') |
| self.assertTrue(isinstance(node, fdt.Node)) |
| node = self.dtb.GetNode('/i2c@0/pmic@9') |
| self.assertTrue(isinstance(node, fdt.Node)) |
| self.assertEqual('pmic@9', node.name) |
| self.assertIsNone(self.dtb.GetNode('/i2c@0/pmic@9/missing')) |
| |
| def testFlush(self): |
| """Check that we can flush the device tree out to its file""" |
| fname = self.dtb._fname |
| with open(fname) as fd: |
| data = fd.read() |
| os.remove(fname) |
| with self.assertRaises(IOError): |
| open(fname) |
| self.dtb.Flush() |
| with open(fname) as fd: |
| data = fd.read() |
| |
| def testPack(self): |
| """Test that packing a device tree works""" |
| self.dtb.Pack() |
| |
| def testGetFdt(self): |
| """Tetst that we can access the raw device-tree data""" |
| self.assertTrue(isinstance(self.dtb.GetContents(), bytearray)) |
| |
| def testGetProps(self): |
| """Tests obtaining a list of properties""" |
| node = self.dtb.GetNode('/spl-test') |
| props = self.dtb.GetProps(node) |
| self.assertEqual(['boolval', 'bytearray', 'byteval', 'compatible', |
| 'intarray', 'intval', 'longbytearray', 'notstring', |
| 'stringarray', 'stringval', 'u-boot,dm-pre-reloc'], |
| sorted(props.keys())) |
| |
| def testCheckError(self): |
| """Tests the ChecKError() function""" |
| with self.assertRaises(ValueError) as e: |
| fdt.CheckErr(-libfdt.NOTFOUND, 'hello') |
| self.assertIn('FDT_ERR_NOTFOUND: hello', str(e.exception)) |
| |
| |
| class TestNode(unittest.TestCase): |
| """Test operation of the Node class""" |
| |
| @classmethod |
| def setUpClass(cls): |
| tools.PrepareOutputDir(None) |
| |
| @classmethod |
| def tearDownClass(cls): |
| tools._FinaliseForTest() |
| |
| def setUp(self): |
| self.dtb = fdt.FdtScan('tools/dtoc/dtoc_test_simple.dts') |
| self.node = self.dtb.GetNode('/spl-test') |
| |
| def testOffset(self): |
| """Tests that we can obtain the offset of a node""" |
| self.assertTrue(self.node.Offset() > 0) |
| |
| def testDelete(self): |
| """Tests that we can delete a property""" |
| node2 = self.dtb.GetNode('/spl-test2') |
| offset1 = node2.Offset() |
| self.node.DeleteProp('intval') |
| offset2 = node2.Offset() |
| self.assertTrue(offset2 < offset1) |
| self.node.DeleteProp('intarray') |
| offset3 = node2.Offset() |
| self.assertTrue(offset3 < offset2) |
| with self.assertRaises(libfdt.FdtException): |
| self.node.DeleteProp('missing') |
| |
| def testDeleteGetOffset(self): |
| """Test that property offset update when properties are deleted""" |
| self.node.DeleteProp('intval') |
| prop, value = _GetPropertyValue(self.dtb, self.node, 'longbytearray') |
| self.assertEqual(prop.value, value) |
| |
| def testFindNode(self): |
| """Tests that we can find a node using the FindNode() functoin""" |
| node = self.dtb.GetRoot().FindNode('i2c@0') |
| self.assertEqual('i2c@0', node.name) |
| subnode = node.FindNode('pmic@9') |
| self.assertEqual('pmic@9', subnode.name) |
| self.assertEqual(None, node.FindNode('missing')) |
| |
| def testRefreshMissingNode(self): |
| """Test refreshing offsets when an extra node is present in dtb""" |
| # Delete it from our tables, not the device tree |
| del self.dtb._root.subnodes[-1] |
| with self.assertRaises(ValueError) as e: |
| self.dtb.Refresh() |
| self.assertIn('Internal error, offset', str(e.exception)) |
| |
| def testRefreshExtraNode(self): |
| """Test refreshing offsets when an expected node is missing""" |
| # Delete it from the device tre, not our tables |
| self.dtb.GetFdtObj().del_node(self.node.Offset()) |
| with self.assertRaises(ValueError) as e: |
| self.dtb.Refresh() |
| self.assertIn('Internal error, node name mismatch ' |
| 'spl-test != spl-test2', str(e.exception)) |
| |
| def testRefreshMissingProp(self): |
| """Test refreshing offsets when an extra property is present in dtb""" |
| # Delete it from our tables, not the device tree |
| del self.node.props['notstring'] |
| with self.assertRaises(ValueError) as e: |
| self.dtb.Refresh() |
| self.assertIn("Internal error, property 'notstring' missing, offset ", |
| str(e.exception)) |
| |
| |
| class TestProp(unittest.TestCase): |
| """Test operation of the Prop class""" |
| |
| @classmethod |
| def setUpClass(cls): |
| tools.PrepareOutputDir(None) |
| |
| @classmethod |
| def tearDownClass(cls): |
| tools._FinaliseForTest() |
| |
| def setUp(self): |
| self.dtb = fdt.FdtScan('tools/dtoc/dtoc_test_simple.dts') |
| self.node = self.dtb.GetNode('/spl-test') |
| self.fdt = self.dtb.GetFdtObj() |
| |
| def testMissingNode(self): |
| self.assertEqual(None, self.dtb.GetNode('missing')) |
| |
| def testPhandle(self): |
| dtb = fdt.FdtScan('tools/dtoc/dtoc_test_phandle.dts') |
| node = dtb.GetNode('/phandle-source2') |
| prop = node.props['clocks'] |
| self.assertTrue(fdt32_to_cpu(prop.value) > 0) |
| |
| def _ConvertProp(self, prop_name): |
| """Helper function to look up a property in self.node and return it |
| |
| Args: |
| Property name to find |
| |
| Return fdt.Prop object for this property |
| """ |
| p = self.fdt.get_property(self.node.Offset(), prop_name) |
| return fdt.Prop(self.node, -1, prop_name, p) |
| |
| def testMakeProp(self): |
| """Test we can convert all the the types that are supported""" |
| prop = self._ConvertProp('boolval') |
| self.assertEqual(fdt.TYPE_BOOL, prop.type) |
| self.assertEqual(True, prop.value) |
| |
| prop = self._ConvertProp('intval') |
| self.assertEqual(fdt.TYPE_INT, prop.type) |
| self.assertEqual(1, fdt32_to_cpu(prop.value)) |
| |
| prop = self._ConvertProp('intarray') |
| self.assertEqual(fdt.TYPE_INT, prop.type) |
| val = [fdt32_to_cpu(val) for val in prop.value] |
| self.assertEqual([2, 3, 4], val) |
| |
| prop = self._ConvertProp('byteval') |
| self.assertEqual(fdt.TYPE_BYTE, prop.type) |
| self.assertEqual(5, ord(prop.value)) |
| |
| prop = self._ConvertProp('longbytearray') |
| self.assertEqual(fdt.TYPE_BYTE, prop.type) |
| val = [ord(val) for val in prop.value] |
| self.assertEqual([9, 10, 11, 12, 13, 14, 15, 16, 17], val) |
| |
| prop = self._ConvertProp('stringval') |
| self.assertEqual(fdt.TYPE_STRING, prop.type) |
| self.assertEqual('message', prop.value) |
| |
| prop = self._ConvertProp('stringarray') |
| self.assertEqual(fdt.TYPE_STRING, prop.type) |
| self.assertEqual(['multi-word', 'message'], prop.value) |
| |
| prop = self._ConvertProp('notstring') |
| self.assertEqual(fdt.TYPE_BYTE, prop.type) |
| val = [ord(val) for val in prop.value] |
| self.assertEqual([0x20, 0x21, 0x22, 0x10, 0], val) |
| |
| def testGetEmpty(self): |
| """Tests the GetEmpty() function for the various supported types""" |
| self.assertEqual(True, fdt.Prop.GetEmpty(fdt.TYPE_BOOL)) |
| self.assertEqual(chr(0), fdt.Prop.GetEmpty(fdt.TYPE_BYTE)) |
| self.assertEqual(chr(0) * 4, fdt.Prop.GetEmpty(fdt.TYPE_INT)) |
| self.assertEqual('', fdt.Prop.GetEmpty(fdt.TYPE_STRING)) |
| |
| def testGetOffset(self): |
| """Test we can get the offset of a property""" |
| prop, value = _GetPropertyValue(self.dtb, self.node, 'longbytearray') |
| self.assertEqual(prop.value, value) |
| |
| def testWiden(self): |
| """Test widening of values""" |
| node2 = self.dtb.GetNode('/spl-test2') |
| prop = self.node.props['intval'] |
| |
| # No action |
| prop2 = node2.props['intval'] |
| prop.Widen(prop2) |
| self.assertEqual(fdt.TYPE_INT, prop.type) |
| self.assertEqual(1, fdt32_to_cpu(prop.value)) |
| |
| # Convert singla value to array |
| prop2 = self.node.props['intarray'] |
| prop.Widen(prop2) |
| self.assertEqual(fdt.TYPE_INT, prop.type) |
| self.assertTrue(isinstance(prop.value, list)) |
| |
| # A 4-byte array looks like a single integer. When widened by a longer |
| # byte array, it should turn into an array. |
| prop = self.node.props['longbytearray'] |
| prop2 = node2.props['longbytearray'] |
| self.assertFalse(isinstance(prop2.value, list)) |
| self.assertEqual(4, len(prop2.value)) |
| prop2.Widen(prop) |
| self.assertTrue(isinstance(prop2.value, list)) |
| self.assertEqual(9, len(prop2.value)) |
| |
| # Similarly for a string array |
| prop = self.node.props['stringval'] |
| prop2 = node2.props['stringarray'] |
| self.assertFalse(isinstance(prop.value, list)) |
| self.assertEqual(7, len(prop.value)) |
| prop.Widen(prop2) |
| self.assertTrue(isinstance(prop.value, list)) |
| self.assertEqual(3, len(prop.value)) |
| |
| # Enlarging an existing array |
| prop = self.node.props['stringarray'] |
| prop2 = node2.props['stringarray'] |
| self.assertTrue(isinstance(prop.value, list)) |
| self.assertEqual(2, len(prop.value)) |
| prop.Widen(prop2) |
| self.assertTrue(isinstance(prop.value, list)) |
| self.assertEqual(3, len(prop.value)) |
| |
| def testAdd(self): |
| """Test adding properties""" |
| self.fdt.pack() |
| # This function should automatically expand the device tree |
| self.node.AddZeroProp('one') |
| self.node.AddZeroProp('two') |
| self.node.AddZeroProp('three') |
| |
| # Updating existing properties should be OK, since the device-tree size |
| # does not change |
| self.fdt.pack() |
| self.node.SetInt('one', 1) |
| self.node.SetInt('two', 2) |
| self.node.SetInt('three', 3) |
| |
| # This should fail since it would need to increase the device-tree size |
| with self.assertRaises(libfdt.FdtException) as e: |
| self.node.SetInt('four', 4) |
| self.assertIn('FDT_ERR_NOSPACE', str(e.exception)) |
| |
| |
| class TestFdtUtil(unittest.TestCase): |
| """Tests for the fdt_util module |
| |
| This module will likely be mostly replaced at some point, once upstream |
| libfdt has better Python support. For now, this provides tests for current |
| functionality. |
| """ |
| @classmethod |
| def setUpClass(cls): |
| tools.PrepareOutputDir(None) |
| |
| def setUp(self): |
| self.dtb = fdt.FdtScan('tools/dtoc/dtoc_test_simple.dts') |
| self.node = self.dtb.GetNode('/spl-test') |
| |
| def testGetInt(self): |
| self.assertEqual(1, fdt_util.GetInt(self.node, 'intval')) |
| self.assertEqual(3, fdt_util.GetInt(self.node, 'missing', 3)) |
| |
| with self.assertRaises(ValueError) as e: |
| self.assertEqual(3, fdt_util.GetInt(self.node, 'intarray')) |
| self.assertIn("property 'intarray' has list value: expecting a single " |
| 'integer', str(e.exception)) |
| |
| def testGetString(self): |
| self.assertEqual('message', fdt_util.GetString(self.node, 'stringval')) |
| self.assertEqual('test', fdt_util.GetString(self.node, 'missing', |
| 'test')) |
| |
| with self.assertRaises(ValueError) as e: |
| self.assertEqual(3, fdt_util.GetString(self.node, 'stringarray')) |
| self.assertIn("property 'stringarray' has list value: expecting a " |
| 'single string', str(e.exception)) |
| |
| def testGetBool(self): |
| self.assertEqual(True, fdt_util.GetBool(self.node, 'boolval')) |
| self.assertEqual(False, fdt_util.GetBool(self.node, 'missing')) |
| self.assertEqual(True, fdt_util.GetBool(self.node, 'missing', True)) |
| self.assertEqual(False, fdt_util.GetBool(self.node, 'missing', False)) |
| |
| def testGetByte(self): |
| self.assertEqual(5, fdt_util.GetByte(self.node, 'byteval')) |
| self.assertEqual(3, fdt_util.GetByte(self.node, 'missing', 3)) |
| |
| with self.assertRaises(ValueError) as e: |
| fdt_util.GetByte(self.node, 'longbytearray') |
| self.assertIn("property 'longbytearray' has list value: expecting a " |
| 'single byte', str(e.exception)) |
| |
| with self.assertRaises(ValueError) as e: |
| fdt_util.GetByte(self.node, 'intval') |
| self.assertIn("property 'intval' has length 4, expecting 1", |
| str(e.exception)) |
| |
| def testGetDataType(self): |
| self.assertEqual(1, fdt_util.GetDatatype(self.node, 'intval', int)) |
| self.assertEqual('message', fdt_util.GetDatatype(self.node, 'stringval', |
| str)) |
| with self.assertRaises(ValueError) as e: |
| self.assertEqual(3, fdt_util.GetDatatype(self.node, 'boolval', |
| bool)) |
| def testFdtCellsToCpu(self): |
| val = self.node.props['intarray'].value |
| self.assertEqual(0, fdt_util.fdt_cells_to_cpu(val, 0)) |
| self.assertEqual(2, fdt_util.fdt_cells_to_cpu(val, 1)) |
| |
| dtb2 = fdt.FdtScan('tools/dtoc/dtoc_test_addr64.dts') |
| node2 = dtb2.GetNode('/test1') |
| val = node2.props['reg'].value |
| self.assertEqual(0x1234, fdt_util.fdt_cells_to_cpu(val, 2)) |
| |
| def testEnsureCompiled(self): |
| """Test a degenerate case of this function""" |
| dtb = fdt_util.EnsureCompiled('tools/dtoc/dtoc_test_simple.dts') |
| self.assertEqual(dtb, fdt_util.EnsureCompiled(dtb)) |
| |
| def testGetPlainBytes(self): |
| self.assertEqual('fred', fdt_util.get_plain_bytes('fred')) |
| |
| |
| def RunTestCoverage(): |
| """Run the tests and check that we get 100% coverage""" |
| test_util.RunTestCoverage('tools/dtoc/test_fdt.py', None, |
| ['tools/patman/*.py', '*test_fdt.py'], options.build_dir) |
| |
| |
| def RunTests(args): |
| """Run all the test we have for the fdt model |
| |
| Args: |
| args: List of positional args provided to fdt. This can hold a test |
| name to execute (as in 'fdt -t testFdt', for example) |
| """ |
| result = unittest.TestResult() |
| sys.argv = [sys.argv[0]] |
| test_name = args and args[0] or None |
| for module in (TestFdt, TestNode, TestProp, TestFdtUtil): |
| if test_name: |
| try: |
| suite = unittest.TestLoader().loadTestsFromName(test_name, module) |
| except AttributeError: |
| continue |
| else: |
| suite = unittest.TestLoader().loadTestsFromTestCase(module) |
| suite.run(result) |
| |
| print result |
| for _, err in result.errors: |
| print err |
| for _, err in result.failures: |
| print err |
| |
| if __name__ != '__main__': |
| sys.exit(1) |
| |
| parser = OptionParser() |
| parser.add_option('-B', '--build-dir', type='string', default='b', |
| help='Directory containing the build output') |
| parser.add_option('-t', '--test', action='store_true', dest='test', |
| default=False, help='run tests') |
| parser.add_option('-T', '--test-coverage', action='store_true', |
| default=False, help='run tests and check for 100% coverage') |
| (options, args) = parser.parse_args() |
| |
| # Run our meagre tests |
| if options.test: |
| RunTests(args) |
| elif options.test_coverage: |
| RunTestCoverage() |