Adding models with get_secret_vaule function

moto/secretsmanager/models.py

@@ -0,0 +1,49 @@
+from __future__ import unicode_literals
+
+import datetime
+import json
+
+import boto.secretsmanager
+
+from moto.core import BaseBackend, BaseModel
+
+class SecretsManager(BaseModel):
+
+    def __init__(self, region, **kwargs):
+        self.secret_id = kwargs.get('secret_id', '')
+        self.version_id = kwargs.get('version_id', '')
+        self.string_id = kwargs.get('string_id', '')
+
+class SecretsManagerBackend(BaseBackend):
+
+    def __init__(self, region):
+        super(SecretsManagerBackend, self).__init__()
+        self.region = region
+
+    def get_secret_value(self, secret_id, version_id, string_id):
+
+        secret_response = SecretsManager(self.region, secret_id=secret_id,
+            version_id=version_id,
+            string_id=string_id)
+
+        response = json.dumps({
+            "ARN": secret_arn,
+            "Name": self.secret_id,
+            "VersionId": "A435958A-D821-4193-B719-B7769357AER4",
+            "SecretBinary": b"testbytes",
+            "SecretString": "mysecretstring",
+            "VersionStages": [
+                "AWSCURRENT",
+            ],
+            "CreatedDate": datetime.datetime.utcnow()
+        })
+
+        return response
+
+    def secret_arn(self):
+        return "arn:aws:secretsmanager:{0}:1234567890:secret:{1}-rIjad".format(
+            self.region, self.secret_id)
+
+secretsmanager_backends = {}
+for regin in boto.secretsmanager.regions():
+    secretsmanager_backends[region.name] = SecretsManagerBackend(region.name)