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# Copyright 2015 Google Inc. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
import sys
import unittest
import _jsonnet
# Returns (full_path, contents) if the file was successfully retrieved,
# (full_path, None) if file not found, or throws an exception when the path
# is invalid or an IO error occured.
# It caches both hits and misses in the `cache` dict. Exceptions
# do not need to be cached, because they abort the computation anyway.
def try_path_cached(cache, dir, rel):
if not rel:
raise RuntimeError('Got invalid filename (empty string).')
if rel[0] == '/':
full_path = rel
else:
full_path = dir + rel
if full_path[-1] == '/':
raise RuntimeError('Attempted to import a directory')
if full_path not in cache:
if not os.path.isfile(full_path):
cache[full_path] = None
else:
with open(full_path) as f:
cache[full_path] = f.read().encode()
return full_path, cache[full_path]
def import_callback_encode(dir, rel):
cache = {}
full_path, content = try_path_cached(cache, dir, rel)
if content:
return full_path, content
raise RuntimeError('File not found')
def import_callback_empty_file_encode(dir, rel):
return dir, b''
# Test native extensions
def concat(a, b):
return a + b
def return_types():
return {
'a': [1, 2, 3, None, []],
'b': 1.0,
'c': True,
'd': None,
'e': {
'x': 1,
'y': 2,
'z': ['foo']
},
}
native_callbacks = {
'concat': (('a', 'b'), concat),
'return_types': ((), return_types),
}
class JsonnetTests(unittest.TestCase):
def setUp(self):
base_dir = os.path.join(os.path.dirname(__file__), "testdata")
self.input_filename = os.path.join(base_dir, "basic_check.jsonnet")
self.trivial_filename = os.path.join(base_dir, "trivial.jsonnet")
self.test_filename = os.path.join(base_dir, "test.jsonnet")
with open(self.input_filename, "r") as infile:
self.input_snippet = infile.read()
def test_version(self):
self.assertEqual(type(_jsonnet.version), str)
def test_evaluate_file_encode(self):
json_str = _jsonnet.evaluate_file(
self.input_filename,
import_callback=import_callback_encode,
native_callbacks=native_callbacks,
)
self.assertEqual(json_str, "true\n")
def test_evaluate_snippet_encode(self):
json_str = _jsonnet.evaluate_snippet(
self.test_filename,
self.input_snippet,
import_callback=import_callback_encode,
native_callbacks=native_callbacks,
)
self.assertEqual(json_str, "true\n")
def test_evaluate_snippet_encode(self):
json_str = _jsonnet.evaluate_snippet(
self.test_filename,
self.input_snippet,
import_callback=import_callback_encode,
native_callbacks=native_callbacks,
)
self.assertEqual(json_str, "true\n")
def test_import_encode(self):
json_str = _jsonnet.evaluate_snippet(
self.test_filename,
"import 'trivial.jsonnet'",
import_callback=import_callback_encode,
native_callbacks=native_callbacks,
)
self.assertEqual(json_str, "42\n")
def test_import_no_eol_encode(self):
json_str = _jsonnet.evaluate_snippet(
self.test_filename,
"import 'trivial_no_eol.jsonnet'",
import_callback=import_callback_encode,
native_callbacks=native_callbacks,
)
self.assertEqual(json_str, "42\n")
def test_import_binary_encode(self):
json_str = _jsonnet.evaluate_snippet(
self.test_filename,
"importbin 'binary123.bin'",
import_callback=import_callback_encode,
native_callbacks=native_callbacks,
)
self.assertEqual(json_str, "[\n 1,\n 2,\n 3\n]\n")
def test_import_binary_sentinel_encode(self):
json_str = _jsonnet.evaluate_snippet(
self.test_filename,
"importbin 'binary1230123.bin'",
import_callback=import_callback_encode,
native_callbacks=native_callbacks,
)
self.assertEqual(json_str, "[\n 1,\n 2,\n 3,\n 0,\n 1,\n 2,\n 3\n]\n")
def test_import_str_empty_file_encode(self):
json_str = _jsonnet.evaluate_snippet(
self.test_filename,
"importstr 'binary123.bin'",
import_callback=import_callback_empty_file_encode,
native_callbacks=native_callbacks,
)
self.assertEqual(json_str, "\"\"\n")
def test_import_binary_empty_file_encode(self):
json_str = _jsonnet.evaluate_snippet(
self.test_filename,
"importbin 'binary123.bin'",
import_callback=import_callback_empty_file_encode,
native_callbacks=native_callbacks,
)
self.assertEqual(json_str, "[ ]\n")
def test_double_import(self):
json_str = _jsonnet.evaluate_snippet(
self.test_filename,
"local x = import 'trivial.jsonnet';\n" +
"local y = import 'trivial.jsonnet';\n" +
"x + y",
import_callback=import_callback_encode,
native_callbacks=native_callbacks,
)
self.assertEqual(json_str, "84\n")
if __name__ == '__main__':
unittest.main()
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