kopia lustrzana https://github.com/jupyterhub/repo2docker
81 wiersze
2.4 KiB
Python
81 wiersze
2.4 KiB
Python
"""
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Test that build time memory limits are enforced
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"""
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import os
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from unittest.mock import MagicMock
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import pytest
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import docker
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from repo2docker.buildpacks import BaseImage, DockerBuildPack
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basedir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
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def test_memory_limit_enforced(tmpdir):
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fake_cache_from = ["image-1:latest"]
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fake_log_value = {"stream": "fake"}
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fake_client = MagicMock(spec=docker.APIClient)
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fake_client.build.return_value = iter([fake_log_value])
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fake_extra_build_kwargs = {"somekey": "somevalue"}
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# some memory limit value, the important bit is that this value is
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# later passed to the `build` method of the Docker API client
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memory_limit = 128 * 1024
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# Test that the buildpack passes the right arguments to the docker
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# client in order to enforce the memory limit
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tmpdir.chdir()
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for line in BaseImage().build(
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fake_client,
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"image-2",
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memory_limit,
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{},
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fake_cache_from,
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fake_extra_build_kwargs,
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):
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pass
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# check that we pass arguments asking for memory limiting
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# to the Docker API client
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args, kwargs = fake_client.build.call_args
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assert "container_limits" in kwargs
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assert kwargs["container_limits"] == {
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"memory": memory_limit,
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"memswap": memory_limit,
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}
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def test_memlimit_same_postbuild():
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"""
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Validate that the postBuild files for the dockerfile and non-dockerfile
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tests are the same
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Until https://github.com/jupyterhub/repo2docker/issues/160 gets fixed.
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"""
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filepaths = [
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os.path.join(basedir, "memlimit", t, "postBuild")
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for t in ("dockerfile", "non-dockerfile")
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]
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file_contents = []
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for fp in filepaths:
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with open(fp) as f:
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file_contents.append(f.read())
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# Make sure they're all the same
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assert len(set(file_contents)) == 1
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@pytest.mark.parametrize("BuildPack", [BaseImage, DockerBuildPack])
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def test_memlimit_argument_type(BuildPack):
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# check that an exception is raised when the memory limit isn't an int
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fake_log_value = {"stream": "fake"}
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fake_client = MagicMock(spec=docker.APIClient)
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fake_client.build.return_value = iter([fake_log_value])
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with pytest.raises(ValueError) as exc_info:
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for line in BuildPack().build(fake_client, "image-2", "10Gi", {}, [], {}):
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pass
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assert "The memory limit has to be specified as an" in str(exc_info.value)
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