Add basic tests for schema1

image/docker/schema1.py

@@ -114,7 +114,7 @@ class DockerSchema1Manifest(object):
             },
           },
           'required': [DOCKER_SCHEMA1_PROTECTED_KEY, DOCKER_SCHEMA1_HEADER_KEY,
-                      DOCKER_SCHEMA1_SIGNATURE_KEY],
+                       DOCKER_SCHEMA1_SIGNATURE_KEY],
         },
       },
       DOCKER_SCHEMA1_REPO_TAG_KEY: {

image/docker/test/test_schema1.py

@@ -0,0 +1,82 @@
+import json
+import pytest
+
+from image.docker.schema1 import MalformedSchema1Manifest, DockerSchema1Manifest
+
+@pytest.mark.parametrize('json_data', [
+  '',
+  '{}',
+  """
+  {
+    "unknown": "key"
+  }
+  """,
+])
+def test_malformed_manifests(json_data):
+  with pytest.raises(MalformedSchema1Manifest):
+    DockerSchema1Manifest(json_data)
+
+
+@pytest.mark.parametrize('namespace', [
+  '',
+  'somenamespace',
+])
+def test_valid_manifest(namespace):
+  manifest_bytes = json.dumps({
+    "name": namespace + "/hello-world" if namespace else 'hello-world',
+    "tag": "latest",
+    "architecture": "amd64",
+    "fsLayers": [
+      {
+        "blobSum": "sha256:cc8567d70002e957612902a8e985ea129d831ebe04057d88fb644857caa45d11"
+      },
+      {
+        "blobSum": "sha256:5f70bf18a086007016e948b04aed3b82103a36bea41755b6cddfaf10ace3c6ef"
+      }
+    ],
+    "history": [
+      {
+        "v1Compatibility": "{\"id\":\"someid\", \"parent\": \"anotherid\"}"
+      },
+      {
+        "v1Compatibility": "{\"id\":\"anotherid\"}"
+      },
+    ],
+    "schemaVersion": 1,
+    "signatures": [
+      {
+        "header": {
+          "jwk": {
+            "crv": "P-256",
+            "kid": "OD6I:6DRK:JXEJ:KBM4:255X:NSAA:MUSF:E4VM:ZI6W:CUN2:L4Z6:LSF4",
+            "kty": "EC",
+            "x": "3gAwX48IQ5oaYQAYSxor6rYYc_6yjuLCjtQ9LUakg4A",
+            "y": "t72ge6kIA1XOjqjVoEOiPPAURltJFBMGDSQvEGVB010"
+          },
+          "alg": "ES256"
+        },
+        "signature": "XREm0L8WNn27Ga_iE_vRnTxVMhhYY0Zst_FfkKopg6gWSoTOZTuW4rK0fg_IqnKkEKlbD83tD46LKEGi5aIVFg",
+        "protected": "eyJmb3JtYXRMZW5ndGgiOjY2MjgsImZvcm1hdFRhaWwiOiJDbjAiLCJ0aW1lIjoiMjAxNS0wNC0wOFQxODo1Mjo1OVoifQ"
+      }
+    ]
+  })
+
+  manifest = DockerSchema1Manifest(manifest_bytes, validate=False)
+  assert len(manifest.signatures) == 1
+  assert manifest.namespace == namespace
+  assert manifest.repo_name == 'hello-world'
+  assert manifest.tag == 'latest'
+  assert manifest.image_ids == {'someid', 'anotherid'}
+  assert manifest.parent_image_ids == {'anotherid'}
+
+  assert len(manifest.layers) == 2
+
+  assert manifest.layers[0].v1_metadata.image_id == 'anotherid'
+  assert manifest.layers[0].v1_metadata.parent_image_id is None
+
+  assert manifest.layers[1].v1_metadata.image_id == 'someid'
+  assert manifest.layers[1].v1_metadata.parent_image_id == 'anotherid'
+
+  assert manifest.leaf_layer == manifest.layers[1]
+
+  assert manifest.digest