[ruby/irb] Regroup completion tests

https://github.com/ruby/irb/commit/71631287c8

test/irb/test_completion.rb

@@ -77,44 +77,7 @@ module TestIRB
       end
     end
 
-    def test_complete_symbol
+    class TestRequireComepletion < TestCompletion
-      %w"UTF-16LE UTF-7".each do |enc|
-        "K".force_encoding(enc).to_sym
-      rescue
-      end
-      _ = :aiueo
-      assert_include(IRB::InputCompletor.retrieve_completion_data(":a", bind: binding), ":aiueo")
-      assert_empty(IRB::InputCompletor.retrieve_completion_data(":irb_unknown_symbol_abcdefg", bind: binding))
-    end
-
-    def test_complete_invalid_three_colons
-      assert_empty(IRB::InputCompletor.retrieve_completion_data(":::A", bind: binding))
-      assert_empty(IRB::InputCompletor.retrieve_completion_data(":::", bind: binding))
-    end
-
-    def test_complete_absolute_constants_with_special_characters
-      assert_empty(IRB::InputCompletor.retrieve_completion_data("::A:", bind: binding))
-      assert_empty(IRB::InputCompletor.retrieve_completion_data("::A.", bind: binding))
-      assert_empty(IRB::InputCompletor.retrieve_completion_data("::A(", bind: binding))
-      assert_empty(IRB::InputCompletor.retrieve_completion_data("::A)", bind: binding))
-    end
-
-    def test_complete_symbol_failure
-      assert_nil(IRB::InputCompletor::PerfectMatchedProc.(":aiueo", bind: binding))
-    end
-
-    def test_complete_reserved_words
-      candidates = IRB::InputCompletor.retrieve_completion_data("de", bind: binding)
-      %w[def defined?].each do |word|
-        assert_include candidates, word
-      end
-
-      candidates = IRB::InputCompletor.retrieve_completion_data("__", bind: binding)
-      %w[__ENCODING__ __LINE__ __FILE__].each do |word|
-        assert_include candidates, word
-      end
-    end
-
       def test_complete_require
         candidates = IRB::InputCompletor::CompletionProc.("'irb", "require ", "")
         %w['irb/init 'irb/ruby-lex].each do |word|
@@ -187,7 +150,9 @@ module TestIRB
           assert_include candidates, word
         end
       end
+    end
 
+    class TestVariableCompletion < TestCompletion
       def test_complete_variable
         # Bug fix issues https://github.com/ruby/irb/issues/368
         # Variables other than `str_example` and `@str_example` are defined to ensure that irb completion does not cause unintended behavior
@@ -217,6 +182,56 @@ module TestIRB
         assert_equal(IRB::InputCompletor.retrieve_completion_data("@str_example.to_s", bind: binding, doc_namespace: true), "String.to_s")
       end
 
+      def test_complete_sort_variables
+        xzy, xzy_1, xzy2 = '', '', ''
+
+        xzy.clear
+        xzy_1.clear
+        xzy2.clear
+
+        candidates = IRB::InputCompletor.retrieve_completion_data("xz", bind: binding, doc_namespace: false)
+        assert_equal(candidates, %w[xzy xzy2 xzy_1])
+      end
+    end
+
+    def test_complete_symbol
+      %w"UTF-16LE UTF-7".each do |enc|
+        "K".force_encoding(enc).to_sym
+      rescue
+      end
+      _ = :aiueo
+      assert_include(IRB::InputCompletor.retrieve_completion_data(":a", bind: binding), ":aiueo")
+      assert_empty(IRB::InputCompletor.retrieve_completion_data(":irb_unknown_symbol_abcdefg", bind: binding))
+    end
+
+    def test_complete_invalid_three_colons
+      assert_empty(IRB::InputCompletor.retrieve_completion_data(":::A", bind: binding))
+      assert_empty(IRB::InputCompletor.retrieve_completion_data(":::", bind: binding))
+    end
+
+    def test_complete_absolute_constants_with_special_characters
+      assert_empty(IRB::InputCompletor.retrieve_completion_data("::A:", bind: binding))
+      assert_empty(IRB::InputCompletor.retrieve_completion_data("::A.", bind: binding))
+      assert_empty(IRB::InputCompletor.retrieve_completion_data("::A(", bind: binding))
+      assert_empty(IRB::InputCompletor.retrieve_completion_data("::A)", bind: binding))
+    end
+
+    def test_complete_symbol_failure
+      assert_nil(IRB::InputCompletor::PerfectMatchedProc.(":aiueo", bind: binding))
+    end
+
+    def test_complete_reserved_words
+      candidates = IRB::InputCompletor.retrieve_completion_data("de", bind: binding)
+      %w[def defined?].each do |word|
+        assert_include candidates, word
+      end
+
+      candidates = IRB::InputCompletor.retrieve_completion_data("__", bind: binding)
+      %w[__ENCODING__ __LINE__ __FILE__].each do |word|
+        assert_include candidates, word
+      end
+    end
+
     def test_complete_methods
       obj = Object.new
       obj.singleton_class.class_eval {
@@ -240,16 +255,5 @@ module TestIRB
       assert_include(IRB::InputCompletor.retrieve_completion_data("private_hoge.to_s", bind: bind), "private_hoge.to_s")
       assert_include(IRB::InputCompletor.retrieve_completion_data("private_hoge", bind: bind, doc_namespace: true), "private_hoge")
     end
-
-    def test_complete_sort_variables
-      xzy, xzy_1, xzy2 = '', '', ''
-
-      xzy.clear
-      xzy_1.clear
-      xzy2.clear
-
-      candidates = IRB::InputCompletor.retrieve_completion_data("xz", bind: binding, doc_namespace: false)
-      assert_equal(candidates, %w[xzy xzy2 xzy_1])
-    end
   end
 end