🔧 Appraisal is not following SemVer

- semver/semver#716 (comment)
- https://tom.preston-werner.com/2022/05/23/major-version-numbers-are-not-sacred.html

Author: pboling

.rubocop_gradual.lock

@@ -16,5 +16,15 @@
     [55, 21, 1, "Lint/Syntax: unexpected token tCOLON\n(Using Ruby 2.2 parser; configure using `TargetRubyVersion` parameter, under `AllCops`)", 177567],
     [56, 22, 4, "Lint/Syntax: unexpected token tCONSTANT\n(Using Ruby 2.2 parser; configure using `TargetRubyVersion` parameter, under `AllCops`)", 2089414472],
     [57, 22, 4, "Lint/Syntax: unexpected token tCONSTANT\n(Using Ruby 2.2 parser; configure using `TargetRubyVersion` parameter, under `AllCops`)", 2089414472]
+  ],
+  "spec/version_gem/error_spec.rb:3824255504": [
+    [5, 29, 5, "RSpec/MissingExpectationTargetMethod: Use `.to`, `.not_to` or `.to_not` to set an expectation.", 179970942]
+  ],
+  "spec/version_gem/ruby_spec.rb:4114481917": [
+    [10, 29, 5, "RSpec/MissingExpectationTargetMethod: Use `.to`, `.not_to` or `.to_not` to set an expectation.", 179970942]
+  ],
+  "spec/version_gem_spec.rb:482289161": [
+    [5, 29, 5, "RSpec/MissingExpectationTargetMethod: Use `.to`, `.not_to` or `.to_not` to set an expectation.", 179970942],
+    [9, 38, 5, "RSpec/MissingExpectationTargetMethod: Use `.to`, `.not_to` or `.to_not` to set an expectation.", 179970942]
   ]
 }

Appraisals

@@ -1,20 +1,22 @@
 # frozen_string_literal: true
 
 appraise "ruby-2-2" do
-  gem "mutex_m", "~> 0.2"
-  gem "stringio", "~> 3.0"
-  remove_gem "appraisal" # only present because it must be in the gemfile because we target a git branch
+  gem "mutex_m", "~> 0.1.2"
+  gem "stringio", "~> 0.0.2"
+  # For Ruby 2.2 we have to use appraisal v2.2 as it is the last to support Ruby v2.2
+  # but it doesn't have the remove_gem feature yet.
+  # remove_gem "appraisal" # only present because it must be in the gemfile because we target a git branch
 end
 
 appraise "ruby-2-3" do
-  gem "mutex_m", "~> 0.2"
-  gem "stringio", "~> 3.0"
+  gem "mutex_m", "~> 0.1.2"
+  gem "stringio", "~> 0.0.2"
   remove_gem "appraisal" # only present because it must be in the gemfile because we target a git branch
 end
 
 appraise "ruby-2-4" do
-  gem "mutex_m", "~> 0.2"
-  gem "stringio", "~> 3.0"
+  gem "mutex_m", "~> 0.1.2"
+  gem "stringio", "~> 0.0.2"
   remove_gem "appraisal" # only present because it must be in the gemfile because we target a git branch
 end