56 lines
1.6 KiB
Python
56 lines
1.6 KiB
Python
# Copyright 2017 the authors.
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# This file is part of Hy, which is free software licensed under the Expat
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# license. See the LICENSE.
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from hy.macros import macro, macroexpand
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from hy.lex import tokenize
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from hy.models import HyString, HyList, HySymbol, HyExpression
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from hy.errors import HyMacroExpansionError
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from hy.compiler import HyASTCompiler
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import pytest
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@macro("test")
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def tmac(ETname, *tree):
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""" Turn an expression into a list """
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return HyList(tree)
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def test_preprocessor_simple():
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""" Test basic macro expansion """
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obj = macroexpand(tokenize('(test "one" "two")')[0],
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HyASTCompiler(__name__))
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assert obj == HyList(["one", "two"])
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assert type(obj) == HyList
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def test_preprocessor_expression():
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""" Test that macro expansion doesn't recurse"""
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obj = macroexpand(tokenize('(test (test "one" "two"))')[0],
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HyASTCompiler(__name__))
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assert type(obj) == HyList
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assert type(obj[0]) == HyExpression
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assert obj[0] == HyExpression([HySymbol("test"),
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HyString("one"),
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HyString("two")])
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obj = HyList([HyString("one"), HyString("two")])
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obj = tokenize('(shill ["one" "two"])')[0][1]
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assert obj == macroexpand(obj, HyASTCompiler(""))
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@pytest.mark.xfail
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def test_preprocessor_exceptions():
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""" Test that macro expansion raises appropriate exceptions"""
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try:
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macroexpand(tokenize('(defn)')[0], HyASTCompiler(__name__))
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assert False
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except HyMacroExpansionError as e:
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assert "_hy_anon_fn_" not in str(e)
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assert "TypeError" not in str(e)
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