Add validation tests for the models

.rspec

@@ -0,0 +1 @@
+--require spec_helper

Gemfile

@@ -53,6 +53,7 @@ gem 'tzinfo-data', platforms: %i[mingw mswin x64_mingw jruby]
 gem 'bootsnap', require: false
 
 gem 'byebug', '~> 9.0', '>= 9.0.6'
+gem 'solargraph', group: :development
 
 # Use Sass to process CSS
 # gem "sassc-rails"

Gemfile.lock

@@ -69,7 +69,9 @@ GEM
     addressable (2.8.1)
       public_suffix (>= 2.0.2, < 6.0)
     ast (2.4.2)
+    backport (1.2.0)
     bcrypt (3.1.18)
+    benchmark (0.2.0)
     bindex (0.8.1)
     bootsnap (1.13.0)
       msgpack (~> 1.2)
@@ -107,6 +109,7 @@ GEM
       responders
       warden (~> 1.2.3)
     diff-lcs (1.5.0)
+    e2mmap (0.1.0)
     erubi (1.11.0)
     globalid (1.0.0)
       activesupport (>= 5.0)
@@ -118,10 +121,15 @@ GEM
     io-console (0.5.11)
     irb (1.4.2)
       reline (>= 0.3.0)
+    jaro_winkler (1.5.4)
     jbuilder (2.11.5)
       actionview (>= 5.0.0)
       activesupport (>= 5.0.0)
     json (2.6.2)
+    kramdown (2.4.0)
+      rexml
+    kramdown-parser-gfm (1.1.0)
+      kramdown (~> 2.0)
     loofah (2.19.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
@@ -194,6 +202,8 @@ GEM
     responders (3.0.1)
       actionpack (>= 5.0)
       railties (>= 5.0)
+    reverse_markdown (2.1.1)
+      nokogiri
     rexml (3.2.5)
     rspec-core (3.12.0)
       rspec-support (~> 3.12.0)
@@ -231,6 +241,21 @@ GEM
       rexml (~> 3.2, >= 3.2.5)
       rubyzip (>= 1.2.2, < 3.0)
       websocket (~> 1.0)
+    solargraph (0.47.2)
+      backport (~> 1.2)
+      benchmark
+      bundler (>= 1.17.2)
+      diff-lcs (~> 1.4)
+      e2mmap
+      jaro_winkler (~> 1.5)
+      kramdown (~> 2.3)
+      kramdown-parser-gfm (~> 1.1)
+      parser (~> 3.0)
+      reverse_markdown (>= 1.0.5, < 3)
+      rubocop (>= 0.52)
+      thor (~> 1.0)
+      tilt (~> 2.0)
+      yard (~> 0.9, >= 0.9.24)
     sprockets (4.1.1)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
@@ -241,6 +266,7 @@ GEM
     stimulus-rails (1.1.1)
       railties (>= 6.0.0)
     thor (1.2.1)
+    tilt (2.0.11)
     timeout (0.3.0)
     turbo-rails (1.3.2)
       actionpack (>= 6.0.0)
@@ -261,13 +287,16 @@ GEM
       nokogiri (~> 1.6)
       rubyzip (>= 1.3.0)
       selenium-webdriver (~> 4.0)
+    webrick (1.7.0)
     websocket (1.2.9)
     websocket-driver (0.7.5)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
     xmpp4r (0.5.6)
     xpath (3.2.0)
       nokogiri (~> 1.8)
+    yard (0.9.28)
+      webrick (~> 1.7.0)
     zeitwerk (2.6.6)
 
 PLATFORMS
@@ -291,6 +320,7 @@ DEPENDENCIES
   rspec-rails
   rubocop (>= 1.0, < 2.0)
   selenium-webdriver
+  solargraph
   sprockets-rails
   stimulus-rails
   turbo-rails

spec/models/expense_spec.rb

@@ -1,5 +1,15 @@
 require 'rails_helper'
 
 RSpec.describe Expense, type: :model do
-  pending "add some examples to (or delete) #{__FILE__}"
+  context 'Validation tests for Expense model' do
+    it 'is not valid without a name' do
+      @expense1 = Expense.create(name: nil, amount: 100)
+      expect(@expense1).to_not be_valid
+    end
+
+    it 'is not valid without an amount' do
+      @expense1 = Expense.create(name: 'name', amount: nil)
+      expect(@expense1).to_not be_valid
+    end
+  end
 end

spec/models/group_spec.rb

@@ -1,5 +1,15 @@
 require 'rails_helper'
 
 RSpec.describe Group, type: :model do
-  pending "add some examples to (or delete) #{__FILE__}"
+  context 'Validation tests for group model' do
+    it 'is not valid without a name' do
+      @group1 = Group.create(name: nil, icon: 'icon')
+      expect(@group1).to_not be_valid
+    end
+
+    it 'is not valid without an icon' do
+      @group2 = Group.create(name: 'name', icon: nil)
+      expect(@group2).to_not be_valid
+    end
+  end
 end

spec/models/user_spec.rb

@@ -1,5 +1,19 @@
 require 'rails_helper'
 
 RSpec.describe User, type: :model do
-  pending "add some examples to (or delete) #{__FILE__}"
+  subject do
+    User.new(name: 'Tommy')
+  end
+
+  before(:example) { subject.save }
+
+  it 'Name must be present' do
+    subject.name = nil
+    expect(subject).to_not be_valid
+  end
+
+  it 'A valid name should be accepted' do
+    subject.name = 'David'
+    expect(subject).to be_valid
+  end
 end

spec/rails_helper.rb

@@ -0,0 +1,63 @@
+# This file is copied to spec/ when you run 'rails generate rspec:install'
+require 'spec_helper'
+ENV['RAILS_ENV'] ||= 'test'
+require_relative '../config/environment'
+# Prevent database truncation if the environment is production
+abort("The Rails environment is running in production mode!") if Rails.env.production?
+require 'rspec/rails'
+# Add additional requires below this line. Rails is not loaded until this point!
+
+# Requires supporting ruby files with custom matchers and macros, etc, in
+# spec/support/ and its subdirectories. Files matching `spec/**/*_spec.rb` are
+# run as spec files by default. This means that files in spec/support that end
+# in _spec.rb will both be required and run as specs, causing the specs to be
+# run twice. It is recommended that you do not name files matching this glob to
+# end with _spec.rb. You can configure this pattern with the --pattern
+# option on the command line or in ~/.rspec, .rspec or `.rspec-local`.
+#
+# The following line is provided for convenience purposes. It has the downside
+# of increasing the boot-up time by auto-requiring all files in the support
+# directory. Alternatively, in the individual `*_spec.rb` files, manually
+# require only the support files necessary.
+#
+# Dir[Rails.root.join('spec', 'support', '**', '*.rb')].sort.each { |f| require f }
+
+# Checks for pending migrations and applies them before tests are run.
+# If you are not using ActiveRecord, you can remove these lines.
+begin
+  ActiveRecord::Migration.maintain_test_schema!
+rescue ActiveRecord::PendingMigrationError => e
+  abort e.to_s.strip
+end
+RSpec.configure do |config|
+  # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
+  config.fixture_path = "#{::Rails.root}/spec/fixtures"
+
+  # If you're not using ActiveRecord, or you'd prefer not to run each of your
+  # examples within a transaction, remove the following line or assign false
+  # instead of true.
+  config.use_transactional_fixtures = true
+
+  # You can uncomment this line to turn off ActiveRecord support entirely.
+  # config.use_active_record = false
+
+  # RSpec Rails can automatically mix in different behaviours to your tests
+  # based on their file location, for example enabling you to call `get` and
+  # `post` in specs under `spec/controllers`.
+  #
+  # You can disable this behaviour by removing the line below, and instead
+  # explicitly tag your specs with their type, e.g.:
+  #
+  #     RSpec.describe UsersController, type: :controller do
+  #       # ...
+  #     end
+  #
+  # The different available types are documented in the features, such as in
+  # https://relishapp.com/rspec/rspec-rails/docs
+  config.infer_spec_type_from_file_location!
+
+  # Filter lines from Rails gems in backtraces.
+  config.filter_rails_from_backtrace!
+  # arbitrary gems may also be filtered via:
+  # config.filter_gems_from_backtrace("gem name")
+end

spec/spec_helper.rb

@@ -0,0 +1,94 @@
+# This file was generated by the `rails generate rspec:install` command. Conventionally, all
+# specs live under a `spec` directory, which RSpec adds to the `$LOAD_PATH`.
+# The generated `.rspec` file contains `--require spec_helper` which will cause
+# this file to always be loaded, without a need to explicitly require it in any
+# files.
+#
+# Given that it is always loaded, you are encouraged to keep this file as
+# light-weight as possible. Requiring heavyweight dependencies from this file
+# will add to the boot time of your test suite on EVERY test run, even for an
+# individual file that may not need all of that loaded. Instead, consider making
+# a separate helper file that requires the additional dependencies and performs
+# the additional setup, and require it from the spec files that actually need
+# it.
+#
+# See https://rubydoc.info/gems/rspec-core/RSpec/Core/Configuration
+RSpec.configure do |config|
+  # rspec-expectations config goes here. You can use an alternate
+  # assertion/expectation library such as wrong or the stdlib/minitest
+  # assertions if you prefer.
+  config.expect_with :rspec do |expectations|
+    # This option will default to `true` in RSpec 4. It makes the `description`
+    # and `failure_message` of custom matchers include text for helper methods
+    # defined using `chain`, e.g.:
+    #     be_bigger_than(2).and_smaller_than(4).description
+    #     # => "be bigger than 2 and smaller than 4"
+    # ...rather than:
+    #     # => "be bigger than 2"
+    expectations.include_chain_clauses_in_custom_matcher_descriptions = true
+  end
+
+  # rspec-mocks config goes here. You can use an alternate test double
+  # library (such as bogus or mocha) by changing the `mock_with` option here.
+  config.mock_with :rspec do |mocks|
+    # Prevents you from mocking or stubbing a method that does not exist on
+    # a real object. This is generally recommended, and will default to
+    # `true` in RSpec 4.
+    mocks.verify_partial_doubles = true
+  end
+
+  # This option will default to `:apply_to_host_groups` in RSpec 4 (and will
+  # have no way to turn it off -- the option exists only for backwards
+  # compatibility in RSpec 3). It causes shared context metadata to be
+  # inherited by the metadata hash of host groups and examples, rather than
+  # triggering implicit auto-inclusion in groups with matching metadata.
+  config.shared_context_metadata_behavior = :apply_to_host_groups
+
+# The settings below are suggested to provide a good initial experience
+# with RSpec, but feel free to customize to your heart's content.
+=begin
+  # This allows you to limit a spec run to individual examples or groups
+  # you care about by tagging them with `:focus` metadata. When nothing
+  # is tagged with `:focus`, all examples get run. RSpec also provides
+  # aliases for `it`, `describe`, and `context` that include `:focus`
+  # metadata: `fit`, `fdescribe` and `fcontext`, respectively.
+  config.filter_run_when_matching :focus
+
+  # Allows RSpec to persist some state between runs in order to support
+  # the `--only-failures` and `--next-failure` CLI options. We recommend
+  # you configure your source control system to ignore this file.
+  config.example_status_persistence_file_path = "spec/examples.txt"
+
+  # Limits the available syntax to the non-monkey patched syntax that is
+  # recommended. For more details, see:
+  # https://relishapp.com/rspec/rspec-core/docs/configuration/zero-monkey-patching-mode
+  config.disable_monkey_patching!
+
+  # Many RSpec users commonly either run the entire suite or an individual
+  # file, and it's useful to allow more verbose output when running an
+  # individual spec file.
+  if config.files_to_run.one?
+    # Use the documentation formatter for detailed output,
+    # unless a formatter has already been configured
+    # (e.g. via a command-line flag).
+    config.default_formatter = "doc"
+  end
+
+  # Print the 10 slowest examples and example groups at the
+  # end of the spec run, to help surface which specs are running
+  # particularly slow.
+  config.profile_examples = 10
+
+  # Run specs in random order to surface order dependencies. If you find an
+  # order dependency and want to debug it, you can fix the order by providing
+  # the seed, which is printed after each run.
+  #     --seed 1234
+  config.order = :random
+
+  # Seed global randomization in this process using the `--seed` CLI option.
+  # Setting this allows you to use `--seed` to deterministically reproduce
+  # test failures related to randomization by passing the same `--seed` value
+  # as the one that triggered the failure.
+  Kernel.srand config.seed
+=end
+end