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Convert nearley css test into unit test

This commit is contained in:
Kaspar Emanuel 2017-10-05 12:46:52 +01:00
parent e8c02951e4
commit a87bcf3097
6 changed files with 76 additions and 46 deletions
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3
.gitmodules vendored Normal file
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@ -0,0 +1,3 @@
[submodule "tests/test_nearley/nearley"]
path = tests/test_nearley/nearley
url = https://github.com/kasbah/nearley

46
lark/tools/nearley.py
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@ -169,51 +169,6 @@ def create_code_for_nearley_grammar(g, start, builtin_path, folder_path):
return ''.join(emit_code)
def test():
css_example_grammar = """
# http://www.w3.org/TR/css3-color/#colorunits
@builtin "whitespace.ne"
@builtin "number.ne"
@builtin "postprocessors.ne"
csscolor -> "#" hexdigit hexdigit hexdigit hexdigit hexdigit hexdigit {%
function(d) {
return {
"r": parseInt(d[1]+d[2], 16),
"g": parseInt(d[3]+d[4], 16),
"b": parseInt(d[5]+d[6], 16),
}
}
%}
| "#" hexdigit hexdigit hexdigit {%
function(d) {
return {
"r": parseInt(d[1]+d[1], 16),
"g": parseInt(d[2]+d[2], 16),
"b": parseInt(d[3]+d[3], 16),
}
}
%}
| "rgb" _ "(" _ colnum _ "," _ colnum _ "," _ colnum _ ")" {% $({"r": 4, "g": 8, "b": 12}) %}
| "hsl" _ "(" _ colnum _ "," _ colnum _ "," _ colnum _ ")" {% $({"h": 4, "s": 8, "l": 12}) %}
| "rgba" _ "(" _ colnum _ "," _ colnum _ "," _ colnum _ "," _ decimal _ ")" {% $({"r": 4, "g": 8, "b": 12, "a": 16}) %}
| "hsla" _ "(" _ colnum _ "," _ colnum _ "," _ colnum _ "," _ decimal _ ")" {% $({"h": 4, "s": 8, "l": 12, "a": 16}) %}
hexdigit -> [a-fA-F0-9]
colnum -> unsigned_int {% id %} | percentage {%
function(d) {return Math.floor(d[0]*255); }
%}
"""
code = create_code_for_nearley_grammar(css_example_grammar, 'csscolor', '/home/erez/nearley/builtin', './')
d = {}
exec (code, d)
parse = d['parse']
print(parse('#a199ff'))
print(parse('rgb(255, 70%, 3)'))
def main():
if len(sys.argv) < 3:
print("Reads Nearley grammar (with js functions) outputs an equivalent lark parser.")
@ -228,4 +183,3 @@ def main():
if __name__ == '__main__':
main()
# test()

2
tests/__main__.py
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@ -5,6 +5,8 @@ import logging
from .test_trees import TestTrees
from .test_nearley.test_nearley import TestNearley
# from .test_selectors import TestSelectors
# from .test_grammars import TestPythonG, TestConfigG

0
tests/test_nearley/__init__.py Normal file
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1
tests/test_nearley/nearley Submodule

@ -0,0 +1 @@
Subproject commit 0abb6e5feef2f4ebf80d5a0891c1ad709011b1c7

70
tests/test_nearley/test_nearley.py Normal file
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@ -0,0 +1,70 @@
from __future__ import absolute_import
import unittest
import logging
import os
import sys
logging.basicConfig(level=logging.INFO)
from lark.tools.nearley import create_code_for_nearley_grammar
NEARLEY_PATH = os.path.abspath(os.path.join(os.path.dirname(__file__), 'nearley'))
BUILTIN_PATH = os.path.join(NEARLEY_PATH, 'builtin')
class TestNearley(unittest.TestCase):
def test_css(self):
css_example_grammar = """
# http://www.w3.org/TR/css3-color/#colorunits
@builtin "whitespace.ne"
@builtin "number.ne"
@builtin "postprocessors.ne"
csscolor -> "#" hexdigit hexdigit hexdigit hexdigit hexdigit hexdigit {%
function(d) {
return {
"r": parseInt(d[1]+d[2], 16),
"g": parseInt(d[3]+d[4], 16),
"b": parseInt(d[5]+d[6], 16),
}
}
%}
| "#" hexdigit hexdigit hexdigit {%
function(d) {
return {
"r": parseInt(d[1]+d[1], 16),
"g": parseInt(d[2]+d[2], 16),
"b": parseInt(d[3]+d[3], 16),
}
}
%}
| "rgb" _ "(" _ colnum _ "," _ colnum _ "," _ colnum _ ")" {% $({"r": 4, "g": 8, "b": 12}) %}
| "hsl" _ "(" _ colnum _ "," _ colnum _ "," _ colnum _ ")" {% $({"h": 4, "s": 8, "l": 12}) %}
| "rgba" _ "(" _ colnum _ "," _ colnum _ "," _ colnum _ "," _ decimal _ ")" {% $({"r": 4, "g": 8, "b": 12, "a": 16}) %}
| "hsla" _ "(" _ colnum _ "," _ colnum _ "," _ colnum _ "," _ decimal _ ")" {% $({"h": 4, "s": 8, "l": 12, "a": 16}) %}
hexdigit -> [a-fA-F0-9]
colnum -> unsigned_int {% id %} | percentage {%
function(d) {return Math.floor(d[0]*255); }
%}
"""
code = create_code_for_nearley_grammar(css_example_grammar, 'csscolor', BUILTIN_PATH, './')
d = {}
exec (code, d)
parse = d['parse']
c = parse('#a199ff')
assert c['r'] == 161
assert c['g'] == 153
assert c['b'] == 255
c = parse('rgb(255, 70%, 3)')
assert c['r'] == 255
assert c['g'] == 178
assert c['b'] == 3
if __name__ == '__main__':
unittest.main()