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Gems should be sorted in an alphabetical order within their section of the Gemfile. Gem config should appear before connection_pool.
Open

gem "config",                           "~>2.2", ">=2.2.3",  :require => false
Severity: Minor
Found in Gemfile by rubocop

Gems should be alphabetically sorted within groups.

Example:

# bad
gem 'rubocop'
gem 'rspec'

# good
gem 'rspec'
gem 'rubocop'

# good
gem 'rubocop'

gem 'rspec'

# good only if TreatCommentsAsGroupSeparators is true
# For code quality
gem 'rubocop'
# For tests
gem 'rspec'

Parenthesize the param Module.new { def resolve_class(klass_name) (class_loader.class != Psych::ClassLoader::Restricted && klass_name && klass_name.safe_constantize) || super end } to make sure that the block will be associated with the Module.new method call.
Open

Psych::Visitors::ToRuby.prepend Module.new {
  def resolve_class(klass_name)
    (class_loader.class != Psych::ClassLoader::Restricted && klass_name && klass_name.safe_constantize) || super
  end
}
Severity: Minor
Found in config/initializers/yaml_autoloader.rb by rubocop

This cop checks for ambiguous block association with method when param passed without parentheses.

Example:

# bad
some_method a { |val| puts val }

Example:

# good
# With parentheses, there's no ambiguity.
some_method(a) { |val| puts val }

# good
# Operator methods require no disambiguation
foo == bar { |b| b.baz }

# good
# Lambda arguments require no disambiguation
foo = ->(bar) { bar.baz }

Avoid when branches without a body.
Open

        when "raw"                                  # return without formatting
Severity: Minor
Found in lib/vmdb/global_methods.rb by rubocop

This cop checks for the presence of when branches without a body.

Example:

# bad

case foo
when bar then 1
when baz then # nothing
end

Example:

# good

case foo
when bar then 1
when baz then 2
end

Use match? instead of =~ when MatchData is not used.
Open

    :no_db if error.message =~ /Connection refused/i
Severity: Minor
Found in lib/tasks/evm_application.rb by rubocop

In Ruby 2.4, String#match?, Regexp#match? and Symbol#match? have been added. The methods are faster than match. Because the methods avoid creating a MatchData object or saving backref. So, when MatchData is not used, use match? instead of match.

Example:

# bad
def foo
  if x =~ /re/
    do_something
  end
end

# bad
def foo
  if x.match(/re/)
    do_something
  end
end

# bad
def foo
  if /re/ === x
    do_something
  end
end

# good
def foo
  if x.match?(/re/)
    do_something
  end
end

# good
def foo
  if x =~ /re/
    do_something(Regexp.last_match)
  end
end

# good
def foo
  if x.match(/re/)
    do_something($~)
  end
end

# good
def foo
  if /re/ === x
    do_something($~)
  end
end

Use #key? instead of #keys.include?.
Open

      return false if exp[operator].keys.include?("tag")
Severity: Minor
Found in lib/miq_expression.rb by rubocop

Avoid rescuing the Exception class. Perhaps you meant to rescue StandardError?
Open

    rescue Exception => err
      _log.error("'#{err.message}'")
Severity: Minor
Found in lib/miq_ldap.rb by rubocop

This cop checks for rescue blocks targeting the Exception class.

Example:

# bad

begin
  do_something
rescue Exception
  handle_exception
end

Example:

# good

begin
  do_something
rescue ArgumentError
  handle_exception
end

Avoid rescuing the Exception class. Perhaps you meant to rescue StandardError?
Open

  rescue Exception => err
    MiqWorker::Runner.safe_log(worker, "An unhandled error has occurred: #{err}\n#{err.backtrace.join("\n")}", :error)
    STDERR.puts("ERROR: An unhandled error has occurred: #{err}. See log for details.") rescue nil
    exit 1
Severity: Minor
Found in lib/workers/bin/run_single_worker.rb by rubocop

This cop checks for rescue blocks targeting the Exception class.

Example:

# bad

begin
  do_something
rescue Exception
  handle_exception
end

Example:

# good

begin
  do_something
rescue ArgumentError
  handle_exception
end

Avoid more than 3 levels of block nesting.
Open

          if opts[:dry_run]
            puts "  **** This is a dry-run, nothing updated, skipping. ****"
          else
            service.add_resource!(matching_stack)
            reconnected += 1
Severity: Minor
Found in tools/reconnect_service_orchestration_stacks.rb by rubocop

This cop checks for excessive nesting of conditional and looping constructs.

You can configure if blocks are considered using the CountBlocks option. When set to false (the default) blocks are not counted towards the nesting level. Set to true to count blocks as well.

The maximum level of nesting allowed is configurable.

Use match? instead of =~ when MatchData is not used.
Open

    if ipaddr =~ Regexp.union(Resolv::IPv4::Regex, Resolv::IPv6::Regex).freeze
Severity: Minor
Found in lib/workers/evm_server.rb by rubocop

In Ruby 2.4, String#match?, Regexp#match? and Symbol#match? have been added. The methods are faster than match. Because the methods avoid creating a MatchData object or saving backref. So, when MatchData is not used, use match? instead of match.

Example:

# bad
def foo
  if x =~ /re/
    do_something
  end
end

# bad
def foo
  if x.match(/re/)
    do_something
  end
end

# bad
def foo
  if /re/ === x
    do_something
  end
end

# good
def foo
  if x.match?(/re/)
    do_something
  end
end

# good
def foo
  if x =~ /re/
    do_something(Regexp.last_match)
  end
end

# good
def foo
  if x.match(/re/)
    do_something($~)
  end
end

# good
def foo
  if /re/ === x
    do_something($~)
  end
end

Use find instead of select.first.
Open

gem_dir = Pathname.new(Bundler.locked_gems.specs.select { |g| g.name == "manageiq-api" }.first.gem_dir)
Severity: Minor
Found in tools/rest_api.rb by rubocop

This cop is used to identify usages of select.first, select.last, find_all.first, and find_all.last and change them to use detect instead.

Example:

# bad
[].select { |item| true }.first
[].select { |item| true }.last
[].find_all { |item| true }.first
[].find_all { |item| true }.last

# good
[].detect { |item| true }
[].reverse.detect { |item| true }

ActiveRecord compatibility: ActiveRecord does not implement a detect method and find has its own meaning. Correcting ActiveRecord methods with this cop should be considered unsafe.

Use #key? instead of #keys.include?.
Open

      if exp[operator].keys.include?("field") && exp[operator]["field"].split(".").length == 1
Severity: Minor
Found in lib/miq_expression.rb by rubocop

Use #key? instead of #keys.include?.
Open

      return false if exp[operator].keys.include?("regkey")
Severity: Minor
Found in lib/miq_expression.rb by rubocop

Unused block argument - type. If it's necessary, use _ or _type as an argument name to indicate that it won't be used.
Open

  VC_ACCESSORS.each do |accessor, type|
Severity: Minor
Found in tools/vim_collect_inventory.rb by rubocop

This cop checks for unused block arguments.

Example:

# bad
do_something do |used, unused|
  puts used
end

do_something do |bar|
  puts :foo
end

define_method(:foo) do |bar|
  puts :baz
end

# good
do_something do |used, _unused|
  puts used
end

do_something do
  puts :foo
end

define_method(:foo) do |_bar|
  puts :baz
end

Example: IgnoreEmptyBlocks: true (default)

# good
do_something { |unused| }

Example: IgnoreEmptyBlocks: false

# bad
do_something { |unused| }

Example: AllowUnusedKeywordArguments: false (default)

# bad
do_something do |unused: 42|
  foo
end

Example: AllowUnusedKeywordArguments: true

# good
do_something do |unused: 42|
  foo
end

Use match? instead of =~ when MatchData is not used.
Open

    raise unless e.message =~ /already exists/
Severity: Minor
Found in lib/container_orchestrator.rb by rubocop

In Ruby 2.4, String#match?, Regexp#match? and Symbol#match? have been added. The methods are faster than match. Because the methods avoid creating a MatchData object or saving backref. So, when MatchData is not used, use match? instead of match.

Example:

# bad
def foo
  if x =~ /re/
    do_something
  end
end

# bad
def foo
  if x.match(/re/)
    do_something
  end
end

# bad
def foo
  if /re/ === x
    do_something
  end
end

# good
def foo
  if x.match?(/re/)
    do_something
  end
end

# good
def foo
  if x =~ /re/
    do_something(Regexp.last_match)
  end
end

# good
def foo
  if x.match(/re/)
    do_something($~)
  end
end

# good
def foo
  if /re/ === x
    do_something($~)
  end
end

Parenthesize the param detail .except(:name) .map { |k, v| " #{k}: #{v}" } to make sure that the block will be associated with the detail .except(:name) .map method call.
Open

          puts detail
            .except(:name)
            .map { |k, v| "  #{k}: #{v}" }
Severity: Minor
Found in lib/tasks/evm_plugins.rake by rubocop

This cop checks for ambiguous block association with method when param passed without parentheses.

Example:

# bad
some_method a { |val| puts val }

Example:

# good
# With parentheses, there's no ambiguity.
some_method(a) { |val| puts val }

# good
# Operator methods require no disambiguation
foo == bar { |b| b.baz }

# good
# Lambda arguments require no disambiguation
foo = ->(bar) { bar.baz }

Prefer using YAML.safe_load over YAML.load.
Open

      dialogs = YAML.load(import_file_upload.uploaded_content)
Severity: Minor
Found in lib/services/dialog_import_service.rb by rubocop

This cop checks for the use of YAML class methods which have potential security issues leading to remote code execution when loading from an untrusted source.

Example:

# bad
YAML.load("--- foo")

# good
YAML.safe_load("--- foo")
YAML.dump("foo")

Avoid rescuing the Exception class. Perhaps you meant to rescue StandardError?
Open

    rescue Exception => err
      _log.error("Binding to LDAP: Host: [#{@ldap.host}], User: [#{username}], '#{err.message}'")
      return false
Severity: Minor
Found in lib/miq_ldap.rb by rubocop

This cop checks for rescue blocks targeting the Exception class.

Example:

# bad

begin
  do_something
rescue Exception
  handle_exception
end

Example:

# good

begin
  do_something
rescue ArgumentError
  handle_exception
end

Use == if you meant to do a comparison or wrap the expression in parentheses to indicate you meant to assign in a condition.
Open

    if pid = MiqServer.running?
Severity: Minor
Found in lib/workers/evm_server.rb by rubocop

This cop checks for assignments in the conditions of if/while/until.

AllowSafeAssignment option for safe assignment. By safe assignment we mean putting parentheses around an assignment to indicate "I know I'm using an assignment as a condition. It's not a mistake."

Example:

# bad
if some_var = true
  do_something
end

# good
if some_var == true
  do_something
end

Example: AllowSafeAssignment: true (default)

# good
if (some_var = true)
  do_something
end

Example: AllowSafeAssignment: false

# bad
if (some_var = true)
  do_something
end

Ambiguous splat operator. Parenthesize the method arguments if it's surely a splat operator, or add a whitespace to the right of the * if it should be a multiplication.
Open

        module_eval { attr_reader *args }
Severity: Minor
Found in lib/extensions/ar_yaml.rb by rubocop

This cop checks for ambiguous operators in the first argument of a method invocation without parentheses.

Example:

# bad

# The `*` is interpreted as a splat operator but it could possibly be
# a `*` method invocation (i.e. `do_something.*(some_array)`).
do_something *some_array

Example:

# good

# With parentheses, there's no ambiguity.
do_something(*some_array)

Prefer using YAML.safe_load over YAML.load.
Open

        obj = YAML.load(data)
Severity: Minor
Found in lib/manageiq/reporting/charting/c3_charting.rb by rubocop

This cop checks for the use of YAML class methods which have potential security issues leading to remote code execution when loading from an untrusted source.

Example:

# bad
YAML.load("--- foo")

# good
YAML.safe_load("--- foo")
YAML.dump("foo")
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