Get standalone server mode working for all tests.

moto/instance_metadata/__init__.py

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+from __future__ import unicode_literals
+from .models import instance_metadata_backend
+
+instance_metadata_backends = {"global": instance_metadata_backend}

moto/instance_metadata/models.py

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+from moto.core.models import BaseBackend
+
+
+class InstanceMetadataBackend(BaseBackend):
+    pass
+
+instance_metadata_backend = InstanceMetadataBackend()

moto/instance_metadata/responses.py

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+from __future__ import unicode_literals
+import datetime
+import json
+from urlparse import urlparse
+
+from moto.core.responses import BaseResponse
+
+
+class InstanceMetadataResponse(BaseResponse):
+    def metadata_response(self, request, full_url, headers):
+        """
+        Mock response for localhost metadata
+
+        http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AESDG-chapter-instancedata.html
+        """
+
+        parsed_url = urlparse(full_url)
+        tomorrow = datetime.datetime.utcnow() + datetime.timedelta(days=1)
+        credentials = dict(
+            AccessKeyId="test-key",
+            SecretAccessKey="test-secret-key",
+            Token="test-session-token",
+            Expiration=tomorrow.strftime("%Y-%m-%dT%H:%M:%SZ")
+        )
+
+        path = parsed_url.path
+
+        meta_data_prefix = "/latest/meta-data/"
+        # Strip prefix if it is there
+        if path.startswith(meta_data_prefix):
+            path = path[len(meta_data_prefix):]
+
+        if path == '':
+            result = 'iam'
+        elif path == 'iam':
+            result = json.dumps({
+                'security-credentials': {
+                    'default-role': credentials
+                }
+            })
+        elif path == 'iam/security-credentials/':
+            result = 'default-role'
+        elif path == 'iam/security-credentials/default-role':
+            result = json.dumps(credentials)
+        else:
+            raise NotImplementedError("The {0} metadata path has not been implemented".format(path))
+        return 200, headers, result

moto/instance_metadata/urls.py

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+from __future__ import unicode_literals
+from .responses import InstanceMetadataResponse
+
+url_bases = [
+    "http://169.254.169.254"
+]
+
+instance_metadata = InstanceMetadataResponse()
+
+url_paths = {
+    '{0}/(?P<path>.+)': instance_metadata.metadata_response,
+}