Alternative to hardcoding image names in tests

tests/constants.py

@@ -17,7 +17,7 @@
 
 FEDORA_REPOSITORY = "registry.fedoraproject.org/fedora"
 FEDORA_MINIMAL_REPOSITORY = "registry.fedoraproject.org/fedora-minimal"
-FEDORA_MINIMAL_REPOSITORY_TAG = "26"
+FEDORA_MINIMAL_REPOSITORY_TAG = "31"
 FEDORA_MINIMAL_REPOSITORY_DIGEST = "registry.fedoraproject.org/fedora-minimal@" \
     "sha256:3b5147b65bf7d124b9ded3959b5e44bf392b405be219853dbcc346f8b9c06e88"
 FEDORA_MINIMAL_IMAGE = "{}:{}".format(FEDORA_MINIMAL_REPOSITORY, FEDORA_MINIMAL_REPOSITORY_TAG)
@@ -34,3 +34,6 @@
 CENTOS_POSTGRES_9_6_TAG = "9.6"
 DJANGO_POSTGRES_TEMPLATE = "django-psql-example"
 INTERNAL_REGISTRY_URL = "172.30.1.1:5000"
+
+FEDORA_MINIMAL_IMAGE_REGEX = r"registry\.fedoraproject\.org\/fedora-minimal\:+([0-9])+"
+FEDORA_MINIMAL_NAME_REGEX = "fedora-minimal:([0-9])+"

tests/integration/test_buildah.py

@@ -11,7 +11,8 @@
 from conu.backend.buildah.image import BuildahImage, BuildahImagePullPolicy
 from conu.utils import check_buildah_command_works
 from tests.constants import FEDORA_MINIMAL_IMAGE
-from ..constants import FEDORA_MINIMAL_REPOSITORY, FEDORA_MINIMAL_REPOSITORY_TAG
+from ..constants import FEDORA_MINIMAL_REPOSITORY, FEDORA_MINIMAL_REPOSITORY_TAG, \
+    FEDORA_MINIMAL_IMAGE_REGEX
 
 
 def test_buildah_command():
@@ -28,7 +29,7 @@ def test_buildah_image(buildah_backend):
     insp = image.inspect()
     assert "Config" in insp
     assert isinstance(insp["Config"], str)
-    assert "registry.fedoraproject.org/fedora-minimal:26" == str(image)
+    assert re.match(FEDORA_MINIMAL_IMAGE_REGEX, str(image))
     assert "BuildahImage(repository=%s, tag=%s)" % (FEDORA_MINIMAL_REPOSITORY,
                                                     FEDORA_MINIMAL_REPOSITORY_TAG) == repr(image)
     assert isinstance(image.get_id(), string_types)
@@ -137,7 +138,7 @@ def test_list_containers(buildah_backend):
 def test_list_images(buildah_backend):
     image_list = buildah_backend.list_images()
     assert len(image_list) > 0
-    # id of registry.fedoraproject.org/fedora-minimal:26
+    # id of registry.fedoraproject.org/fedora-minimal:31
     assert isinstance(image_list[0], BuildahImage)
     assert image_list[0].get_id()
     assert image_list[0].get_full_name()
@@ -150,8 +151,8 @@ def test_image_metadata(buildah_backend):
 
     assert im_metadata.command == ["/bin/bash"]
     assert im_metadata.name == FEDORA_MINIMAL_IMAGE
-    assert im_metadata.env_variables["FGC"] == "f26"
-    assert im_metadata.env_variables["DISTTAG"] == "f26container"
+    assert im_metadata.env_variables["FGC"] == "f31"
+    assert im_metadata.env_variables["DISTTAG"] == "f31container"
     assert im_metadata.labels == {}
 
 
@@ -169,8 +170,8 @@ def test_container_metadata(buildah_backend):
 
         assert container_metadata.command == ["/bin/bash"]
         assert container_metadata.name == "mycontainer"
-        assert container_metadata.env_variables["FGC"] == "f26"
-        assert container_metadata.env_variables["DISTTAG"] == "f26container"
+        assert container_metadata.env_variables["FGC"] == "f31"
+        assert container_metadata.env_variables["DISTTAG"] == "f31container"
         assert container_metadata.labels == {}
     finally:
         c.delete(force=True)

tests/integration/test_docker.py

@@ -27,7 +27,7 @@
 
 from conu.utils import parse_reference
 from ..constants import FEDORA_MINIMAL_REPOSITORY, FEDORA_MINIMAL_REPOSITORY_TAG, \
-    FEDORA_REPOSITORY
+    FEDORA_REPOSITORY, FEDORA_MINIMAL_IMAGE_REGEX, FEDORA_MINIMAL_NAME_REGEX
 
 from conu.apidefs.metadata import ContainerStatus
 from conu.backend.docker.client import get_client
@@ -42,6 +42,7 @@
 from conu.backend.docker.skopeo import SkopeoTransport
 from six import string_types
 
+import re
 
 @pytest.mark.parametrize("reference,result", [
     ("registry.fedoraproject.org/fedora:27", ("registry.fedoraproject.org/fedora", "27")),
@@ -135,8 +136,8 @@ def test_image():
         image = backend.ImageClass(FEDORA_MINIMAL_REPOSITORY, tag=FEDORA_MINIMAL_REPOSITORY_TAG)
         assert "Config" in image.inspect()
         assert "Config" in image.inspect()
-        assert "fedora-minimal:26" in image.get_full_name()
-        assert "registry.fedoraproject.org/fedora-minimal:26" == str(image)
+        assert re.match(FEDORA_MINIMAL_NAME_REGEX, image.get_full_name())
+        assert re.match(FEDORA_MINIMAL_IMAGE_REGEX, str(image))
         assert "DockerImage(repository=%s, tag=%s)" % (FEDORA_MINIMAL_REPOSITORY,
                                                        FEDORA_MINIMAL_REPOSITORY_TAG) == repr(image)
         assert isinstance(image.get_id(), string_types)
@@ -196,7 +197,7 @@ def test_copy_from(tmpdir):
         try:
             c.copy_from("/etc/fedora-release", str(tmpdir))
             with open(os.path.join(str(tmpdir), "fedora-release")) as fd:
-                assert fd.read() == "Fedora release 26 (Twenty Six)\n"
+                assert fd.read() == "Fedora release 31 (Thirty One)\n"
 
             c.copy_from("/etc", str(tmpdir))
             os.path.exists(os.path.join(str(tmpdir), "passwd"))

tests/integration/test_filesystem.py

@@ -53,14 +53,14 @@ def test_container_read_file(docker_container):
         with pytest.raises(ConuException):
             fs.read_file("/i/lost/my/banana")
         content = fs.read_file("/etc/system-release")
-    assert content == "Fedora release 26 (Twenty Six)\n"
+    assert content == "Fedora release 31 (Thirty One)\n"
 
 
 def test_container_copy_from(docker_container, tmpdir):
     with docker_container.mount() as fs:
         fs.copy_from("/etc/system-release", str(tmpdir))
         with open(os.path.join(str(tmpdir), "system-release")) as fd:
-            assert fd.read() == "Fedora release 26 (Twenty Six)\n"
+            assert fd.read() == "Fedora release 31 (Thirty One)\n"
 
         tmpdir.mkdir("etc")
         if six.PY2:
@@ -76,7 +76,7 @@ def test_container_get_file(docker_container):
         f = fs.get_file("/etc/system-release")
         assert f.fileno()
         assert "/etc/system-release" in f.name
-        assert f.read() == "Fedora release 26 (Twenty Six)\n"
+        assert f.read() == "Fedora release 31 (Thirty One)\n"
         f.close()
 
 
@@ -119,14 +119,14 @@ def test_image_read_file(docker_image):
         with pytest.raises(ConuException):
             fs.read_file("/i/lost/my/banana")
         content = fs.read_file("/etc/system-release")
-    assert content == "Fedora release 26 (Twenty Six)\n"
+    assert content == "Fedora release 31 (Thirty One)\n"
 
 
 def test_image_copy_from(docker_image, tmpdir):
     with docker_image.mount() as fs:
         fs.copy_from("/etc/system-release", str(tmpdir))
         with open(os.path.join(str(tmpdir), "system-release")) as fd:
-            assert fd.read() == "Fedora release 26 (Twenty Six)\n"
+            assert fd.read() == "Fedora release 31 (Thirty One)\n"
 
         tmpdir.mkdir("etc")
         if six.PY2:
@@ -142,7 +142,7 @@ def test_image_get_file(docker_image):
         f = fs.get_file("/etc/system-release")
         assert f.fileno()
         assert "/etc/system-release" in f.name
-        assert f.read() == "Fedora release 26 (Twenty Six)\n"
+        assert f.read() == "Fedora release 31 (Thirty One)\n"
         f.close()
 
 

tests/integration/test_podman.py

@@ -1,7 +1,7 @@
 from __future__ import print_function, unicode_literals
 
 from ..constants import FEDORA_MINIMAL_REPOSITORY, FEDORA_MINIMAL_REPOSITORY_TAG, \
-    FEDORA_REPOSITORY
+    FEDORA_REPOSITORY, FEDORA_MINIMAL_IMAGE_REGEX, FEDORA_MINIMAL_NAME_REGEX
 
 import subprocess
 import time
@@ -18,6 +18,7 @@
 from six import string_types
 
 import pytest
+import re
 
 
 @pytest.fixture()
@@ -51,8 +52,8 @@ def test_podman_image(podman_backend):
     assert "%s:%s" % (FEDORA_MINIMAL_REPOSITORY, FEDORA_MINIMAL_REPOSITORY_TAG) == image.get_full_name()
     assert "%s:%s" % (FEDORA_MINIMAL_REPOSITORY, FEDORA_MINIMAL_REPOSITORY_TAG) in image.inspect()['RepoTags']
     assert "Config" in image.inspect()
-    assert "fedora-minimal:26" in image.get_full_name()
-    assert "registry.fedoraproject.org/fedora-minimal:26" == str(image)
+    assert re.match(FEDORA_MINIMAL_NAME_REGEX, image.get_full_name())
+    assert re.match(FEDORA_MINIMAL_IMAGE_REGEX, str(image))
     assert "PodmanImage(repository=%s, tag=%s)" % (FEDORA_MINIMAL_REPOSITORY,
                                                    FEDORA_MINIMAL_REPOSITORY_TAG) == repr(image)
     assert isinstance(image.get_id(), string_types)
@@ -321,7 +322,7 @@ def test_list_containers(podman_backend):
 def test_list_images(podman_backend):
     image_list = podman_backend.list_images()
     assert len(image_list) > 0
-    # id of registry.fedoraproject.org/fedora-minimal:26
+    # id of registry.fedoraproject.org/fedora-minimal:31
     the_id = subprocess.check_output(["podman", "inspect", "-f", "{{.Id}}",
                                       FEDORA_MINIMAL_REPOSITORY + ":" +
                                       FEDORA_MINIMAL_REPOSITORY_TAG]).decode("utf-8").strip()

tests/release/test_release.py

@@ -109,7 +109,7 @@ def test_pypi(c):
         },
         {
             "container_image": "registry.fedoraproject.org/fedora",
-            "container_image_tag": "26",
+            "container_image_tag": "31",
             "script": [
                 ["dnf", "install", "-y", "dnf-plugins-core"],
                 ["dnf", "copr", "enable", "-y", "ttomecek/conu"],