Update supported Rails and Ruby versions

Includes removing Timecop, since Rails now has what we need.

.rubocop.yml

@@ -5,7 +5,7 @@ require: rubocop-rails
 AllCops:
   DisplayCopNames: true
   DisplayStyleGuide: true
-  TargetRubyVersion: 2.3
+  TargetRubyVersion: 2.5
   Exclude:
     - "bin/*"
     - Capfile

Gemfile

@@ -20,5 +20,4 @@ group :test do
   gem "equivalent-xml"
   gem "mocha"
   gem "sqlite3"
-  gem "timecop", "~> 0.7.1"
 end

bootstrap_form.gemspec

@@ -24,8 +24,8 @@ Gem::Specification.new do |s|
   s.bindir        = "exe"
   s.require_paths = ["lib"]
 
-  s.required_ruby_version = ">= 2.3"
+  s.required_ruby_version = ">= 2.5"
 
-  s.add_dependency("actionpack", ">= 5.0")
-  s.add_dependency("activemodel", ">= 5.0")
+  s.add_dependency("actionpack", ">= 5.2")
+  s.add_dependency("activemodel", ">= 5.2")
 end

test/bootstrap_selects_test.rb

@@ -294,7 +294,7 @@ def options_range(start: 1, stop: 31, selected: nil, months: false)
   end
 
   test "date selects are wrapped correctly" do
-    Timecop.freeze(Time.utc(2012, 2, 3)) do
+    travel_to(Time.utc(2012, 2, 3)) do
       expected = <<-HTML.strip_heredoc
         <div class="form-group">
           <label for="user_misc">Misc</label>
@@ -316,7 +316,7 @@ def options_range(start: 1, stop: 31, selected: nil, months: false)
   end
 
   test "date selects are wrapped correctly with wrapper class" do
-    Timecop.freeze(Time.utc(2012, 2, 3)) do
+    travel_to(Time.utc(2012, 2, 3)) do
       expected = <<-HTML.strip_heredoc
         <div class="form-group none-margin">
           <label for="user_misc">Misc</label>
@@ -338,7 +338,7 @@ def options_range(start: 1, stop: 31, selected: nil, months: false)
   end
 
   test "date selects inline when layout is horizontal" do
-    Timecop.freeze(Time.utc(2012, 2, 3)) do
+    travel_to(Time.utc(2012, 2, 3)) do
       expected = <<-HTML.strip_heredoc
       <form accept-charset="UTF-8" action="/users" class="new_user" id="new_user" method="post" role="form">
         #{'<input name="utf8" type="hidden" value="&#x2713;"/>' unless ::Rails::VERSION::STRING >= '6'}
@@ -366,7 +366,7 @@ def options_range(start: 1, stop: 31, selected: nil, months: false)
 
   test "date selects are wrapped correctly with error" do
     @user.errors.add(:misc, "error for test")
-    Timecop.freeze(Time.utc(2012, 2, 3)) do
+    travel_to(Time.utc(2012, 2, 3)) do
       expected = <<-HTML.strip_heredoc
       <form accept-charset="UTF-8" action="/users" class="new_user" id="new_user" method="post" role="form">
         #{'<input name="utf8" type="hidden" value="&#x2713;"/>' unless ::Rails::VERSION::STRING >= '6'}
@@ -392,7 +392,7 @@ def options_range(start: 1, stop: 31, selected: nil, months: false)
   end
 
   test "date selects with options are wrapped correctly" do
-    Timecop.freeze(Time.utc(2012, 2, 3)) do
+    travel_to(Time.utc(2012, 2, 3)) do
       expected = <<-HTML.strip_heredoc
         <div class="form-group">
           <label for="user_misc">Misc</label>
@@ -418,7 +418,7 @@ def options_range(start: 1, stop: 31, selected: nil, months: false)
   end
 
   test "date selects with options and html_options are wrapped correctly" do
-    Timecop.freeze(Time.utc(2012, 2, 3)) do
+    travel_to(Time.utc(2012, 2, 3)) do
       expected = <<-HTML.strip_heredoc
         <div class="form-group">
           <label for="user_misc">Misc</label>
@@ -443,7 +443,7 @@ def options_range(start: 1, stop: 31, selected: nil, months: false)
   end
 
   test "time selects are wrapped correctly" do
-    Timecop.freeze(Time.utc(2012, 2, 3, 12, 0, 0)) do
+    travel_to(Time.utc(2012, 2, 3, 12, 0, 0)) do
       expected = <<-HTML.strip_heredoc
         <div class="form-group">
           <label for="user_misc">Misc</label>
@@ -467,7 +467,7 @@ def options_range(start: 1, stop: 31, selected: nil, months: false)
 
   test "time selects are wrapped correctly with error" do
     @user.errors.add(:misc, "error for test")
-    Timecop.freeze(Time.utc(2012, 2, 3, 12, 0, 0)) do
+    travel_to(Time.utc(2012, 2, 3, 12, 0, 0)) do
       expected = <<-HTML.strip_heredoc
       <form accept-charset="UTF-8" action="/users" class="new_user" id="new_user" method="post" role="form">
         #{'<input name="utf8" type="hidden" value="&#x2713;"/>' unless ::Rails::VERSION::STRING >= '6'}
@@ -494,7 +494,7 @@ def options_range(start: 1, stop: 31, selected: nil, months: false)
   end
 
   test "time selects with options are wrapped correctly" do
-    Timecop.freeze(Time.utc(2012, 2, 3, 12, 0, 0)) do
+    travel_to(Time.utc(2012, 2, 3, 12, 0, 0)) do
       expected = <<-HTML.strip_heredoc
         <div class="form-group">
           <label for="user_misc">Misc</label>
@@ -519,7 +519,7 @@ def options_range(start: 1, stop: 31, selected: nil, months: false)
   end
 
   test "time selects with options and html_options are wrapped correctly" do
-    Timecop.freeze(Time.utc(2012, 2, 3, 12, 0, 0)) do
+    travel_to(Time.utc(2012, 2, 3, 12, 0, 0)) do
       expected = <<-HTML.strip_heredoc
         <div class="form-group">
           <label for="user_misc">Misc</label>
@@ -544,7 +544,7 @@ def options_range(start: 1, stop: 31, selected: nil, months: false)
   end
 
   test "datetime selects are wrapped correctly" do
-    Timecop.freeze(Time.utc(2012, 2, 3, 12, 0, 0)) do
+    travel_to(Time.utc(2012, 2, 3, 12, 0, 0)) do
       expected = <<-HTML.strip_heredoc
         <div class="form-group">
           <label for="user_misc">Misc</label>
@@ -575,7 +575,7 @@ def options_range(start: 1, stop: 31, selected: nil, months: false)
 
   test "datetime selects are wrapped correctly with error" do
     @user.errors.add(:misc, "error for test")
-    Timecop.freeze(Time.utc(2012, 2, 3, 12, 0, 0)) do
+    travel_to(Time.utc(2012, 2, 3, 12, 0, 0)) do
       expected = <<-HTML.strip_heredoc
       <form accept-charset="UTF-8" action="/users" class="new_user" id="new_user" method="post" role="form">
         #{'<input name="utf8" type="hidden" value="&#x2713;"/>' unless ::Rails::VERSION::STRING >= '6'}
@@ -609,7 +609,7 @@ def options_range(start: 1, stop: 31, selected: nil, months: false)
   end
 
   test "datetime selects with options are wrapped correctly" do
-    Timecop.freeze(Time.utc(2012, 2, 3, 12, 0, 0)) do
+    travel_to(Time.utc(2012, 2, 3, 12, 0, 0)) do
       expected = <<-HTML.strip_heredoc
         <div class="form-group">
           <label for="user_misc">Misc</label>
@@ -644,7 +644,7 @@ def options_range(start: 1, stop: 31, selected: nil, months: false)
   end
 
   test "datetime selects with options and html_options are wrapped correctly" do
-    Timecop.freeze(Time.utc(2012, 2, 3, 12, 0, 0)) do
+    travel_to(Time.utc(2012, 2, 3, 12, 0, 0)) do
       expected = <<-HTML.strip_heredoc
         <div class="form-group">
           <label for="user_misc">Misc</label>

test/test_helper.rb

@@ -1,6 +1,5 @@
 ENV["RAILS_ENV"] ||= "test"
 
-require "timecop"
 require "diffy"
 require "nokogiri"
 require "equivalent-xml"