mruby: generate tests for cmdline

pkgs/mruby/.rubocop.yml

@@ -25,6 +25,10 @@ Metrics/BlockLength:
     - 'Rakefile'
     - 'test/**/*.rb'
 
+Security/Eval:
+  Exclude:
+    - 'test/**/*.rb'
+
 Security/YAMLLoad:
   Exclude:
     - 'test/**/*.rb'
@@ -39,6 +43,10 @@ Style/Documentation:
 Style/DoubleNegation:
   Enabled: false
 
+Style/ExpandPathArguments:
+  # __dir__ is not available in mruby
+  Enabled: false
+
 Style/FrozenStringLiteralComment:
   Enabled: false
 

pkgs/mruby/mrbgem.rake

@@ -11,6 +11,7 @@ MRuby::Gem::Specification.new 'mruby-kernaux' do |spec|
     Binding to libkernaux - auxiliary library for kernel development.
   DESCRIPTION
 
+  spec.add_test_dependency 'mruby-eval'
   spec.add_test_dependency 'mruby-io'
   spec.add_test_dependency 'mruby-random'
   spec.add_test_dependency 'mruby-yaml'

pkgs/mruby/test/cmdline.rb

@@ -68,3 +68,22 @@ assert 'when args cause buffer overflow' do
     KernAux.cmdline 'a' * 4096
   end
 end
+
+assert 'usign common tests' do
+  cmdline_yml = File.expand_path('../../../../common/cmdline.yml', __FILE__)
+
+  YAML.load(File.read(cmdline_yml)).each do |test|
+    next unless test['argv_count_max'].nil? && test['buffer_size'].nil?
+
+    escape_str = lambda do |str|
+      eval "\"#{str}\"", nil, __FILE__, __LINE__ # "str"
+    end
+
+    cmdline = escape_str.call test['cmdline']
+    result  = test['result'].map(&escape_str)
+
+    assert "transforms #{cmdline.inspect} to #{result.inspect}" do
+      assert_equal KernAux.cmdline(cmdline), result
+    end
+  end
+end