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151 lines
5.0 KiB
151 lines
5.0 KiB
4 months ago
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import pprint
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import re
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import sys
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import unittest
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import weakref
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sys.path.insert(0, '..')
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import pycparser.c_ast as c_ast
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import pycparser.plyparser as plyparser
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class Test_c_ast(unittest.TestCase):
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def test_BinaryOp(self):
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b1 = c_ast.BinaryOp(
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op='+',
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left=c_ast.Constant(type='int', value='6'),
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right=c_ast.ID(name='joe'))
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self.assertIsInstance(b1.left, c_ast.Constant)
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self.assertEqual(b1.left.type, 'int')
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self.assertEqual(b1.left.value, '6')
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self.assertIsInstance(b1.right, c_ast.ID)
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self.assertEqual(b1.right.name, 'joe')
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def test_weakref_works_on_nodes(self):
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c1 = c_ast.Constant(type='float', value='3.14')
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wr = weakref.ref(c1)
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cref = wr()
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self.assertEqual(cref.type, 'float')
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self.assertEqual(weakref.getweakrefcount(c1), 1)
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def test_weakref_works_on_coord(self):
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coord = plyparser.Coord(file='a', line=2)
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wr = weakref.ref(coord)
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cref = wr()
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self.assertEqual(cref.line, 2)
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self.assertEqual(weakref.getweakrefcount(coord), 1)
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class TestNodeVisitor(unittest.TestCase):
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class ConstantVisitor(c_ast.NodeVisitor):
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def __init__(self):
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self.values = []
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def visit_Constant(self, node):
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self.values.append(node.value)
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def test_scalar_children(self):
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b1 = c_ast.BinaryOp(
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op='+',
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left=c_ast.Constant(type='int', value='6'),
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right=c_ast.ID(name='joe'))
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cv = self.ConstantVisitor()
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cv.visit(b1)
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self.assertEqual(cv.values, ['6'])
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b2 = c_ast.BinaryOp(
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op='*',
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left=c_ast.Constant(type='int', value='111'),
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right=b1)
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b3 = c_ast.BinaryOp(
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op='^',
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left=b2,
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right=b1)
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cv = self.ConstantVisitor()
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cv.visit(b3)
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self.assertEqual(cv.values, ['111', '6', '6'])
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def tests_list_children(self):
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c1 = c_ast.Constant(type='float', value='5.6')
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c2 = c_ast.Constant(type='char', value='t')
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b1 = c_ast.BinaryOp(
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op='+',
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left=c1,
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right=c2)
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b2 = c_ast.BinaryOp(
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op='-',
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left=b1,
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right=c2)
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comp = c_ast.Compound(
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block_items=[b1, b2, c1, c2])
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cv = self.ConstantVisitor()
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cv.visit(comp)
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self.assertEqual(cv.values,
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['5.6', 't', '5.6', 't', 't', '5.6', 't'])
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def test_repr(self):
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c1 = c_ast.Constant(type='float', value='5.6')
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c2 = c_ast.Constant(type='char', value='t')
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b1 = c_ast.BinaryOp(
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op='+',
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left=c1,
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right=c2)
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b2 = c_ast.BinaryOp(
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op='-',
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left=b1,
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right=c2)
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comp = c_ast.Compound(
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block_items=[b1, b2, c1, c2])
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expected = ("Compound(block_items=[BinaryOp(op='+',\n"
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" left=Constant(type='float',\n"
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" value='5.6'\n"
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" ),\n"
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" right=Constant(type='char',\n"
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" value='t'\n"
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" )\n"
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" ),\n"
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" BinaryOp(op='-',\n"
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" left=BinaryOp(op='+',\n"
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" left=Constant(type='float',\n"
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" value='5.6'\n"
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" ),\n"
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" right=Constant(type='char',\n"
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" value='t'\n"
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" )\n"
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" ),\n"
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" right=Constant(type='char',\n"
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" value='t'\n"
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" )\n"
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" ),\n"
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" Constant(type='float',\n"
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" value='5.6'\n"
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" ),\n"
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" Constant(type='char',\n"
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" value='t'\n"
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" )\n"
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" ]\n"
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" )")
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self.assertEqual(repr(comp),
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expected)
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if __name__ == '__main__':
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unittest.main()
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