simplecov added to determine test coverage

Gemfile

@@ -96,6 +96,7 @@ gem 'rspec-activemodel-mocks', '~>1.0.1'
 gem 'rspec-html-matchers', '~>0.7.0'
 gem 'rspec-expectations', '~>3.3.1'
 gem 'capybara', '~>2.5.0'
+gem 'simplecov'
 end
 
 gem "simple_calendar", "~> 0.1.9"

Gemfile.lock

@@ -99,6 +99,7 @@ GEM
       railties (~> 3.1)
       warden (~> 1.2.1)
     diff-lcs (1.3)
+    docile (1.3.1)
     domain_name (0.5.20180417)
       unf (>= 0.0.5, < 1.0.0)
     erubis (2.7.0)
@@ -316,6 +317,11 @@ GEM
       activesupport (>= 3.0.0)
     simple_calendar (0.1.11)
       rails (>= 3.0)
+    simplecov (0.16.1)
+      docile (~> 1.1)
+      json (>= 1.8, < 3)
+      simplecov-html (~> 0.10.0)
+    simplecov-html (0.10.2)
     sitemap_generator (6.0.1)
       builder (~> 3.0)
     sprockets (2.2.2)
@@ -430,6 +436,7 @@ DEPENDENCIES
   seed_dump (~> 0.5.3)
   shareable
   simple_calendar (~> 0.1.9)
+  simplecov
   sitemap_generator
   sprockets (= 2.2.2)
   sqlite3
@@ -446,4 +453,4 @@ DEPENDENCIES
   yaml_db
 
 BUNDLED WITH
-   1.16.1
+   1.16.6