Update changelog

CHANGELOG.md

@@ -7,6 +7,9 @@ For instructions on upgrading to newer versions, visit
 
 ### Resolved Issues
 
+* \#2575 Prevent end of month times from rounding up since floats are not
+  precise enough to handle usec. (Steve Valaitis)
+
 * \#2573 Don't use i18n for inspection messages.
 
 * \#2571 Remove blank error message from locales. (Jordan Elver)

spec/mongoid/extensions/time_spec.rb

@@ -262,10 +262,19 @@
         Time.mongoize(time).to_f.round(3).should eq(time.to_f.round(3))
       end
 
-      it "doesn't round up at end of month" do
+      it "doesn't round up the hour at end of month" do
         eom_time_mongoized.hour.should eq(eom_time.utc.hour)
+      end
+
+      it "doesn't round up the minute" do
         eom_time_mongoized.min.should eq(eom_time.utc.min)
+      end
+
+      it "doesn't round up the seconds" do
         eom_time_mongoized.sec.should eq(eom_time.utc.sec)
+      end
+
+      it "does not alter seconds" do
         (eom_time_mongoized.strftime("%11N").to_i / 100.0).round(0).should eq(999999999)
       end
 
@@ -292,10 +301,19 @@
           )
         end
 
-        it "doesn't round up at end of month" do
+        it "doesn't round up the hour" do
           eom_time_mongoized.hour.should eq(eom_time.utc.hour)
+        end
+
+        it "doesn't round up the minutes" do
           eom_time_mongoized.min.should eq(eom_time.utc.min)
+        end
+
+        it "doesn't round up the seconds" do
           eom_time_mongoized.sec.should eq(eom_time.utc.sec)
+        end
+
+        it "does not alter the seconds" do
           (eom_time_mongoized.strftime("%11N").to_i / 100.0).round(0).should eq(999999999)
         end
       end