3 things.

1. Exchange Models and Entities namespace.
2. Fix the bug that input with missing field leads to 500.
3. Write unit tests.

1 files changed, 17 insertions, 0 deletions

diff --git a/Timeline/Models/PutResult.cs b/Timeline/Models/PutResult.cs
new file mode 100644
index 00000000..f11ac138
--- /dev/null
+++ b/Timeline/Models/PutResult.cs
@@ -0,0 +1,17 @@
+namespace Timeline.Models
+{
+    /// <summary>
+    /// Represents the result of a "put" operation.
+    /// </summary>
+    public enum PutResult
+    {
+        /// <summary>
+        /// Indicates the item did not exist and now is created.
+        /// </summary>
+        Created,
+        /// <summary>
+        /// Indicates the item exists already and is modified.
+        /// </summary>
+        Modified
+    }
+}