[ruby/irb] Drop Ruby 2.6 support

(https://github.com/ruby/irb/pull/555)

* Remove all Ruby 2.6 support

* Drop Ruby 2.6 specific testing conditions

* Only run Ruby 2.7+ on CI

* Bump Ruby requirement to 2.7+

https://github.com/ruby/irb/commit/3f714b616c

1 files changed, 7 insertions, 38 deletions

diff --git a/test/irb/test_color.rb b/test/irb/test_color.rb
index fbcb283a6d..652396c89e 100644
--- a/test/irb/test_color.rb
+++ b/test/irb/test_color.rb
@@ -109,14 +109,11 @@ module TestIRB
         "<<A+1\nA" => "#{RED}<<A#{CLEAR}+#{BLUE}#{BOLD}1#{CLEAR}\n#{RED}A#{CLEAR}",
       }
 
-      # specific to Ruby 2.7+
-      if Gem::Version.new(RUBY_VERSION) >= Gem::Version.new('2.7.0')
-        tests.merge!({
-          "4.5.6" => "#{MAGENTA}#{BOLD}4.5#{CLEAR}#{RED}#{REVERSE}.6#{CLEAR}",
-          "\e[0m\n" => "#{RED}#{REVERSE}^[#{CLEAR}[#{BLUE}#{BOLD}0#{CLEAR}#{RED}#{REVERSE}m#{CLEAR}\n",
-          "<<EOS\nhere\nEOS" => "#{RED}<<EOS#{CLEAR}\n#{RED}here#{CLEAR}\n#{RED}EOS#{CLEAR}",
-        })
-      end
+      tests.merge!({
+        "4.5.6" => "#{MAGENTA}#{BOLD}4.5#{CLEAR}#{RED}#{REVERSE}.6#{CLEAR}",
+        "\e[0m\n" => "#{RED}#{REVERSE}^[#{CLEAR}[#{BLUE}#{BOLD}0#{CLEAR}#{RED}#{REVERSE}m#{CLEAR}\n",
+        "<<EOS\nhere\nEOS" => "#{RED}<<EOS#{CLEAR}\n#{RED}here#{CLEAR}\n#{RED}EOS#{CLEAR}",
+      })
 
       # specific to Ruby 3.0+
       if Gem::Version.new(RUBY_VERSION) >= Gem::Version.new('3.0.0')
@@ -136,18 +133,9 @@ module TestIRB
           })
         end
       else
-        if Gem::Version.new(RUBY_VERSION) >= Gem::Version.new('2.7.0')
-          tests.merge!({
-            "[1]]]\u0013" => "[#{BLUE}#{BOLD}1#{CLEAR}]#{RED}#{REVERSE}]#{CLEAR}]^S",
-            "def req(true) end" => "#{GREEN}def#{CLEAR} #{BLUE}#{BOLD}req#{CLEAR}(#{RED}#{REVERSE}true#{CLEAR}) end",
-          })
-        else
-          tests.merge!({
-            "[1]]]\u0013" => "[#{BLUE}#{BOLD}1#{CLEAR}]]]^S",
-            "def req(true) end" => "#{GREEN}def#{CLEAR} #{BLUE}#{BOLD}req#{CLEAR}(#{CYAN}#{BOLD}true#{CLEAR}) end",
-          })
-        end
         tests.merge!({
+          "[1]]]\u0013" => "[#{BLUE}#{BOLD}1#{CLEAR}]#{RED}#{REVERSE}]#{CLEAR}]^S",
+          "def req(true) end" => "#{GREEN}def#{CLEAR} #{BLUE}#{BOLD}req#{CLEAR}(#{RED}#{REVERSE}true#{CLEAR}) end",
           "nil = 1" => "#{CYAN}#{BOLD}nil#{CLEAR} = #{BLUE}#{BOLD}1#{CLEAR}",
           "alias $x $1" => "#{GREEN}alias#{CLEAR} #{GREEN}#{BOLD}$x#{CLEAR} $1",
           "class bad; end" => "#{GREEN}class#{CLEAR} bad; #{GREEN}end#{CLEAR}",
@@ -184,10 +172,6 @@ module TestIRB
     end
 
     def test_colorize_code_complete_true
-      unless complete_option_supported?
-        pend '`complete: true` is the same as `complete: false` in Ruby 2.6-'
-      end
-
       # `complete: true` behaviors. Warn end-of-file.
       {
         "'foo' + 'bar" => "#{RED}#{BOLD}'#{CLEAR}#{RED}foo#{CLEAR}#{RED}#{BOLD}'#{CLEAR} + #{RED}#{BOLD}'#{CLEAR}#{RED}#{REVERSE}bar#{CLEAR}",
@@ -216,16 +200,6 @@ module TestIRB
         assert_equal_with_term(code, code, complete: false, colorable: false)
 
         assert_equal_with_term(result, code, complete: false, tty: false, colorable: true)
-
-        unless complete_option_supported?
-          assert_equal_with_term(result, code, complete: true)
-
-          assert_equal_with_term(code, code, complete: true, tty: false)
-
-          assert_equal_with_term(code, code, complete: true, colorable: false)
-
-          assert_equal_with_term(result, code, complete: true, tty: false, colorable: true)
-        end
       end
     end
 
@@ -251,11 +225,6 @@ module TestIRB
 
     private
 
-    # `complete: true` is the same as `complete: false` in Ruby 2.6-
-    def complete_option_supported?
-      Gem::Version.new(RUBY_VERSION) >= Gem::Version.new('2.7.0')
-    end
-
     def with_term(tty: true)
       stdout = $stdout
       io = StringIO.new