Merge pull request Azure#52 from fpaparoni/master

Fix date format for non-english locale

Thank you @fpaparoni merging this PR.
This will be in the next release.

sdk/src/main/java/com/microsoft/azure/cosmosdb/internal/Utils.java

@@ -31,6 +31,7 @@
 import java.time.ZonedDateTime;
 import java.time.format.DateTimeFormatter;
 import java.util.Base64;
+import java.util.Locale;
 import java.util.UUID;
 
 import com.fasterxml.jackson.core.JsonParser;
@@ -61,7 +62,7 @@ public final class Utils {
     // so Thu, 04 Jan 2018 00:30:37 GMT is accepted by the cosmos db service,
     // but Thu, 4 Jan 2018 00:30:37 GMT is not.
     // Therefore, we need a custom date time formatter.
-    private static final DateTimeFormatter RFC_1123_DATE_TIME = DateTimeFormatter.ofPattern("EEE, dd MMM yyyy HH:mm:ss zzz");
+    private static final DateTimeFormatter RFC_1123_DATE_TIME = DateTimeFormatter.ofPattern("EEE, dd MMM yyyy HH:mm:ss zzz",Locale.US);
 
     static {
         Utils.simpleObjectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);

sdk/src/test/java/com/microsoft/azure/cosmosdb/internal/UtilsTest.java

@@ -0,0 +1,41 @@
+/*
+ * The MIT License (MIT)
+ * Copyright (c) 2018 Microsoft Corporation
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package com.microsoft.azure.cosmosdb.internal;
+
+import java.time.format.DateTimeFormatter;
+import java.util.Locale;
+
+import org.testng.annotations.Test;
+
+public class UtilsTest {
+    @Test(groups = { "internal" })
+    public void localeUS() {
+    	Locale.setDefault(Locale.ITALIAN);
+    	DateTimeFormatter RFC_1123_DATE_TIME = 
+    			DateTimeFormatter.ofPattern("EEE, dd MMM yyyy HH:mm:ss zzz",Locale.US);
+    	String time=Utils.nowAsRFC1123();
+    	Locale.setDefault(Locale.US);
+    	RFC_1123_DATE_TIME.parse(time);
+    }
+}