1 | #!/usr/bin/env python
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2 | from __future__ import print_function
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3 | """
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4 | arith_ast_test.py: Tests for arith_ast.py
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5 | """
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6 |
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7 | import cStringIO
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8 | import unittest
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9 |
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10 | from asdl import py_meta
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11 | from asdl import asdl_
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12 | from asdl import const
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13 | from asdl import encode
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14 |
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15 | from asdl import arith_ast # module under test
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16 |
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17 | # Sanity check. Doesn't pass because this unit test exposes implementation
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18 | # details, like the concrete classes.
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19 | #from _tmp import arith_ast_asdl as arith_ast
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20 |
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21 |
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22 | ArithVar = arith_ast.ArithVar
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23 | ArithUnary = arith_ast.ArithUnary
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24 | ArithBinary = arith_ast.ArithBinary
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25 | Const = arith_ast.Const
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26 | Slice = arith_ast.Slice
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27 | arith_expr = arith_ast.arith_expr
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28 | source_location = arith_ast.source_location
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29 | op_id_e = arith_ast.op_id_e
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30 |
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31 | cflow_e = arith_ast.cflow_e
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32 | #cflow_t = arith_ast.cflow_t
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33 |
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34 |
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35 | class ArithAstTest(unittest.TestCase):
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36 |
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37 | def testFieldDefaults(self):
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38 | s = arith_ast.Slice()
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39 | s.a = ArithVar('foo')
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40 | self.assertEqual(None, s.begin)
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41 | self.assertEqual(None, s.end)
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42 | self.assertEqual(None, s.stride)
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43 | print(s)
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44 |
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45 | func = arith_ast.FuncCall()
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46 | func.name = 'f'
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47 | self.assertEqual([], func.args)
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48 | print(func)
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49 |
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50 | t = arith_ast.token(5, 'x')
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51 | self.assertEqual(5, t.id)
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52 | self.assertEqual('x', t.value)
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53 | self.assertEqual(const.NO_INTEGER, t.span_id)
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54 |
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55 | def testTypeCheck(self):
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56 | v = ArithVar('name')
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57 | # Integer is not allowed
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58 | self.assertRaises(AssertionError, ArithVar, 1)
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59 |
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60 | v = ArithUnary(op_id_e.Minus, Const(99))
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61 | # Raw integer is not allowed
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62 | self.assertRaises(AssertionError, ArithUnary, op_id_e.Minus, 99)
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63 |
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64 | v = ArithUnary(op_id_e.Minus, Const(99))
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65 | # Raw integer is not allowed
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66 | #self.assertRaises(AssertionError, ArithUnary, op_id_e.Minus, op_id_e.Plus)
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67 |
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68 | def testExtraFields(self):
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69 | v = ArithVar('z')
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70 |
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71 | # TODO: Attach this to EVERY non-simple constructor? Those are subclasses
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72 | # of Sum types.
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73 | # What about product types?
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74 | #print(v.xspans)
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75 |
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76 | def testEncode(self):
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77 | obj = arith_ast.Const(99)
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78 | print('Encoding into binary:')
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79 | print(obj)
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80 |
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81 | enc = encode.Params()
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82 | f = cStringIO.StringIO()
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83 | out = encode.BinOutput(f)
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84 | encode.EncodeRoot(obj, enc, out)
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85 | e = f.getvalue()
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86 |
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87 | #print(repr(e))
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88 | #print(e[0:4], e[4:8], e[8:])
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89 |
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90 | # Header is OHP version 1
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91 | self.assertEqual(b'OHP\x01', e[0:4])
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92 |
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93 | self.assertEqual(b'\x04', e[4:5]) # alignment 4
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94 |
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95 | # TODO: Fix after spids
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96 | return
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97 | self.assertEqual(b'\x02\x00\x00', e[5:8]) # root ref 2
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98 |
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99 | self.assertEqual(b'\x01', e[8:9]) # tag 1 is const
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100 | self.assertEqual(b'\x63\x00\x00', e[9:12]) # 0x63 = 99
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101 |
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102 | def testConstructorType(self):
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103 | n1 = ArithVar('x')
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104 | n2 = ArithVar(name='y')
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105 | print(n1)
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106 | print(n2)
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107 |
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108 | # Not good because not assigned?
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109 | n3 = ArithVar()
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110 |
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111 | # NOTE: You cannot instantiate a product type directly? It's just used for
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112 | # type checking. What about OCaml?
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113 | # That means you just need to create classes for the records (Constructor).
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114 | # They all descend from Obj. They don't need
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115 |
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116 | n3 = ArithVar()
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117 | try:
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118 | n4 = ArithVar('x', name='X')
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119 | except TypeError as e:
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120 | pass
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121 | else:
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122 | raise AssertionError("Should have failed")
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123 |
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124 | def testProductType(self):
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125 | print()
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126 | print('-- PRODUCT --')
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127 | print()
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128 |
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129 | s = source_location()
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130 | s.path = 'hi'
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131 | s.line = 1
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132 | s.col = 2
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133 | s.length = 3
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134 | print(s)
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135 |
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136 | assert isinstance(s.ASDL_TYPE, asdl_.Product)
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137 |
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138 | # Implementation detail for dynamic type checking
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139 | assert isinstance(s, py_meta.CompoundObj)
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140 |
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141 | def testSimpleSumType(self):
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142 | # TODO: Should be op_id_i.Plus -- instance
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143 | # Should be op_id_s.Plus
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144 |
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145 | print()
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146 | print('-- SIMPLE SUM --')
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147 | print()
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148 |
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149 | o = op_id_e.Plus
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150 | assert isinstance(o, py_meta.SimpleObj)
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151 |
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152 | # Implementation detail for dynamic type checking
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153 | assert isinstance(o.ASDL_TYPE, asdl_.Sum)
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154 |
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155 | def testCompoundSumType(self):
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156 | print()
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157 | print('-- COMPOUND SUM --')
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158 | print()
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159 |
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160 | # TODO: Should be cflow_t.Break() and cflow_i.Break
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161 | c = arith_ast.Break()
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162 | assert isinstance(c, arith_ast.Break)
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163 | assert isinstance(c, arith_ast.cflow)
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164 | assert isinstance(c, py_meta.CompoundObj)
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165 |
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166 | # Implementation detail for dynamic type checking
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167 | assert isinstance(c.ASDL_TYPE, asdl_.Constructor), c.ASDL_TYPE
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168 |
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169 | def testOtherTypes(self):
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170 | c = Const(66)
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171 | print(c)
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172 |
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173 | print((Slice(Const(1), Const(5), Const(2))))
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174 |
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175 | print((op_id_e.Plus))
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176 |
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177 | # Class for sum type
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178 | print(arith_expr)
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179 |
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180 | # Invalid because only half were assigned
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181 | #print(ArithBinary(op_id_e.Plus, Const(5)))
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182 |
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183 | n = ArithBinary()
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184 | #n.CheckUnassigned()
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185 | n.op_id = op_id_e.Plus
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186 | n.left = Const(5)
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187 | #n.CheckUnassigned()
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188 | n.right = Const(6)
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189 | n.CheckUnassigned()
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190 |
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191 | arith_expr_e = arith_ast.arith_expr_e
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192 | self.assertEqual(arith_expr_e.Const, c.tag)
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193 | self.assertEqual(arith_expr_e.ArithBinary, n.tag)
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194 |
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195 |
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196 | if __name__ == '__main__':
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197 | unittest.main()
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