add rspec-rails

Gemfile.lock

@@ -78,6 +78,7 @@ GEM
     debug (1.6.1)
       irb (>= 1.3.6)
       reline (>= 0.3.1)
+    diff-lcs (1.5.0)
     digest (3.1.0)
     erubi (1.10.0)
     globalid (1.0.0)
@@ -157,6 +158,23 @@ GEM
     redis (4.7.1)
     reline (0.3.1)
       io-console (~> 0.5)
+    rspec-core (3.11.0)
+      rspec-support (~> 3.11.0)
+    rspec-expectations (3.11.0)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.11.0)
+    rspec-mocks (3.11.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.11.0)
+    rspec-rails (5.1.2)
+      actionpack (>= 5.2)
+      activesupport (>= 5.2)
+      railties (>= 5.2)
+      rspec-core (~> 3.10)
+      rspec-expectations (~> 3.10)
+      rspec-mocks (~> 3.10)
+      rspec-support (~> 3.10)
+    rspec-support (3.11.0)
     sprockets (4.1.1)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
@@ -198,10 +216,10 @@ DEPENDENCIES
   puma (~> 5.0)
   rails (~> 7.0.3, >= 7.0.3.1)
   redis (~> 4.0)
+  rspec-rails (~> 5.1)
   sprockets-rails
   stimulus-rails
   turbo-rails
-  tzinfo-data
   web-console
 
 RUBY VERSION