class TestClassDockerImage(unittest.TestCase):
def setUp(self):
'''Using a specific image here. If this test fails due to the image
not being found anymore, pick a different image to test against
For now use Docker to pull the image from Dockerhub'''
if not check_image('debian:jessie'):
try:
docker_command(pull, 'debian:jessie')
except subprocess.CalledProcessError as error:
print(error.output)
self.image = DockerImage('debian:jessie')
# constants for this image
self.image_id = (
'2fe79f06fa6d3fa9e877b4415fb189f89ca8a4ff4a954a3d84b2c84129'
'9cd127')
self.layer = ('4bcdffd70da292293d059d2435c7056711fab2655f8b74f48ad0abe'
'042b63687')
self.no_layers = 1
self.created_by = ('/bin/sh -c #(nop) ADD file:1dd78a123212328bdc72ef7'
'888024ea27fe141a72e24e0ea7c3c92b63b73d8d1 in / ')
self.instruction = ('ADD file:1dd78a123212328bdc72ef7888024ea27fe141a7'
'2e24e0ea7c3c92b63b73d8d1 in /')
def tearDown(self):
del self.image
def testInstance(self):
self.assertEqual(self.image.repotag, 'debian:jessie')
self.assertEqual(self.image.name, 'debian')
self.assertEqual(self.image.tag, 'jessie')
self.assertFalse(self.image.image_id)
self.assertFalse(self.image.manifest)
self.assertFalse(self.image.repotags)
self.assertFalse(self.image.config)
self.assertFalse(self.image.layers)
self.assertFalse(self.image.history)
def testLoadImage(self):
self.image.load_image()
self.assertEqual(self.image.image_id, self.image_id)
self.assertEqual(self.image.layers[0].diff_id, self.layer)
self.assertEqual(len(self.image.layers), self.no_layers)
self.assertEqual(self.image.layers[0].created_by, self.created_by)
def testGetImageOption(self):
self.assertEqual(self.image.get_image_option(), self.image.repotag)
def testGetLayerDiffIds(self):
self.image.load_image()
self.assertEqual(len(self.image.get_layer_diff_ids()), self.no_layers)
self.assertEqual(self.image.get_layer_diff_ids()[0], self.layer)
def testCreatedToInstruction(self):
self.image.load_image()
instruction = self.image.created_to_instruction(self.created_by)
self.assertEqual(instruction, self.instruction)
def load_full_image():
'''Create image object from test image and return the object'''
test_image = DockerImage(docker.get_dockerfile_image_tag())
try:
test_image.load_image()
except NameError as error:
test_image.origins.add_notice_to_origins(test_image.repotag,
Notice(str(error), 'error'))
except subprocess.CalledProcessError as error:
test_image.origins.add_notice_to_origins(
test_image.repotag, Notice(str(error.output, 'utf-8'), 'error'))
except IOError as error:
test_image.origins.add_notice_to_origins(test_image.repotag,
Notice(str(error), 'error'))
return test_image
def load_full_image(image_tag_string):
'''Create image object from image name and tag and return the object'''
test_image = DockerImage(image_tag_string)
failure_origin = formats.image_load_failure.format(
testimage=test_image.repotag)
try:
test_image.load_image()
except NameError as error:
test_image.origins.add_notice_to_origins(
failure_origin, Notice(str(error), 'error'))
except subprocess.CalledProcessError as error:
test_image.origins.add_notice_to_origins(
failure_origin, Notice(str(error.output, 'utf-8'), 'error'))
except IOError as error:
test_image.origins.add_notice_to_origins(
failure_origin, Notice(str(error), 'error'))
return test_image
def get_dockerfile_base():
'''Get the base image object from the dockerfile base instructions
1. get the instructions around FROM
2. get the base image and tag
3. Make notes based on what the image and tag rules are
4. Return an image object and the base instructions string'''
try:
base_instructions = dockerfile.get_base_instructions(docker_commands)
base_image_tag = dockerfile.get_base_image_tag(base_instructions)
dockerfile_lines = print_dockerfile_base(base_instructions)
# check for scratch
if base_image_tag[0] == 'scratch':
# there is no base image - return no image object
return None
# there should be some image object here
repotag = base_image_tag[0] + dockerfile.tag_separator + \
base_image_tag[1]
from_line = 'FROM ' + repotag
base_image = DockerImage(repotag)
base_image.origins.add_notice_origin(dockerfile_lines)
base_image.name = base_image_tag[0]
# check if there is a tag
if not base_image_tag[1]:
message_string = errors.dockerfile_no_tag.format(
dockerfile_line=from_line)
base_image.origins.add_notice_to_origins(
dockerfile_lines, Notice(message_string, 'warning'))
base_image.tag = 'latest'
else:
base_image.tag = base_image_tag[1]
# check if the tag is 'latest'
if base_image_tag[1] == 'latest':
message_string = errors.dockerfile_using_latest.format(
dockerfile_line=from_line)
base_image.origins.add_notice_to_origins(
dockerfile_lines, Notice(message_string, 'warning'))
return base_image, dockerfile_lines
except ValueError as e:
logger.warning(
errors.cannot_parse_base_image.format(dockerfile=dockerfile_global,
error_msg=e))
return None
def setUp(self):
'''Using a specific image here. If this test fails due to the image
not being found anymore, pick a different image to test against
For now use Docker to pull the image from Dockerhub'''
if not check_image('debian:jessie'):
try:
docker_command(pull, 'debian:jessie')
except subprocess.CalledProcessError as error:
print(error.output)
self.image = DockerImage('debian:jessie')
# constants for this image
self.id = ('2fe79f06fa6d3fa9e877b4415fb189f89ca8a4ff4a954a3d84b2c84129'
'9cd127')
self.layer = ('4bcdffd70da292293d059d2435c7056711fab2655f8b74f48ad0abe'
'042b63687')
self.no_layers = 1
self.created_by = ('/bin/sh -c #(nop) ADD file:1dd78a123212328bdc72ef7'
'888024ea27fe141a72e24e0ea7c3c92b63b73d8d1 in / ')
self.instruction = ('ADD file:1dd78a123212328bdc72ef7888024ea27fe141a7'
'2e24e0ea7c3c92b63b73d8d1 in /')
