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test_helpers.py
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135 lines (108 loc) · 4.91 KB
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# Copyright 2017, Google LLC 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.
from __future__ import absolute_import
import io
import unittest
import mock
from google.auth.credentials import Credentials
from google.cloud.vision_v1 import ImageAnnotatorClient
from google.cloud.vision_v1 import types
class TestSingleImageHelper(unittest.TestCase):
def setUp(self):
credentials = mock.Mock(spec=Credentials)
self.client = ImageAnnotatorClient(credentials=credentials)
@mock.patch.object(ImageAnnotatorClient, 'batch_annotate_images')
def test_all_features_default(self, batch_annotate):
# Set up an image annotation request with no features.
image = types.Image(source={
'image_uri': 'http://foo.com/img.jpg',
})
request = types.AnnotateImageRequest(image=image)
assert not request.features
# Perform the single image request.
self.client.annotate_image(request)
# Evalute the argument sent to batch_annotate_images.
assert batch_annotate.call_count == 1
_, args, kwargs = batch_annotate.mock_calls[0]
# Only a single request object should be sent.
assert len(args[0]) == 1
# Evalute the request object to ensure it looks correct.
request_sent = args[0][0]
all_features = self.client._get_all_features()
assert request_sent.image is request.image
assert len(request_sent.features) == len(all_features)
@mock.patch.object(ImageAnnotatorClient, 'batch_annotate_images')
def test_explicit_features(self, batch_annotate):
# Set up an image annotation request with no features.
image = types.Image(source={
'image_uri': 'http://foo.com/img.jpg',
})
request = types.AnnotateImageRequest(
image=image,
features=[
types.Feature(type=1),
types.Feature(type=2),
types.Feature(type=3),
],
)
# Perform the single image request.
self.client.annotate_image(request)
# Evalute the argument sent to batch_annotate_images.
assert batch_annotate.call_count == 1
_, args, kwargs = batch_annotate.mock_calls[0]
# Only a single request object should be sent.
assert len(args[0]) == 1
# Evalute the request object to ensure it looks correct.
request_sent = args[0][0]
assert request_sent.image is request.image
assert len(request_sent.features) == 3
for feature, i in zip(request_sent.features, range(1, 4)):
assert feature.type == i
assert feature.max_results == 0
@mock.patch.object(ImageAnnotatorClient, 'batch_annotate_images')
def test_image_file_handler(self, batch_annotate):
# Set up a file handler.
file_ = io.BytesIO(b'bogus==')
# Perform the single image request.
self.client.annotate_image({'image': file_})
# Evaluate the argument sent to batch_annotate_images.
assert batch_annotate.call_count == 1
_, args, kwargs = batch_annotate.mock_calls[0]
# Only a single request object should be sent.
assert len(args[0]) == 1
# Evalute the request object to ensure it looks correct.
request_sent = args[0][0]
assert request_sent['image']['content'] == b'bogus=='
@mock.patch.object(ImageAnnotatorClient, 'batch_annotate_images')
@mock.patch.object(io, 'open')
def test_image_filename(self, io_open, batch_annotate):
# Make io.open send back a mock with a read method.
file_ = mock.MagicMock(spec=io.BytesIO)
io_open.return_value = file_
file_.__enter__.return_value = file_
file_.read.return_value = b'imagefile=='
# Perform the single image request using a filename.
self.client.annotate_image(
{'image': {'source': {'filename': 'image.jpeg'}}},
)
# Establish that my file was opened.
io_open.assert_called_once_with('image.jpeg', 'rb')
# Evalute the argument sent to batch_annotate_images.
assert batch_annotate.call_count == 1
_, args, kwargs = batch_annotate.mock_calls[0]
# Only a single request object should be sent.
assert len(args[0]) == 1
# Evalute the request object to ensure it looks correct.
request_sent = args[0][0]
assert request_sent['image']['content'] == b'imagefile=='