Do not run tests that have `ensure` instead of `skip`

Even if tests are "skipped" by `Minitest::Assertions#skip`
`ensure` is executed because tests methods are Ruby methods.

Adding conditions outside of the test methods, entire test methods are
executed only when they are necessary.

activerecord/test/cases/connection_adapters/connection_handler_test.rb

@@ -423,38 +423,38 @@ module ActiveRecord
           rd.close
         end
 
-        def test_pool_from_any_process_for_uses_most_recent_spec
-          skip unless current_adapter?(:SQLite3Adapter)
+        if current_adapter?(:SQLite3Adapter)
+          def test_pool_from_any_process_for_uses_most_recent_spec
+            file = Tempfile.new "lol.sqlite3"
 
-          file = Tempfile.new "lol.sqlite3"
+            rd, wr = IO.pipe
+            rd.binmode
+            wr.binmode
 
-          rd, wr = IO.pipe
-          rd.binmode
-          wr.binmode
+            pid = fork do
+              config_hash = ActiveRecord::Base.configurations.configs_for(env_name: "arunit", name: "primary").configuration_hash.merge(database: file.path)
+              ActiveRecord::Base.establish_connection(config_hash)
 
-          pid = fork do
-            config_hash = ActiveRecord::Base.configurations.configs_for(env_name: "arunit", name: "primary").configuration_hash.merge(database: file.path)
-            ActiveRecord::Base.establish_connection(config_hash)
+              pid2 = fork do
+                wr.write ActiveRecord::Base.connection_db_config.database
+                wr.close
+              end
 
-            pid2 = fork do
-              wr.write ActiveRecord::Base.connection_db_config.database
-              wr.close
+              Process.waitpid pid2
             end
 
-            Process.waitpid pid2
-          end
+            Process.waitpid pid
 
-          Process.waitpid pid
+            wr.close
 
-          wr.close
+            assert_equal file.path, rd.read
 
-          assert_equal file.path, rd.read
-
-          rd.close
-        ensure
-          if file
-            file.close
-            file.unlink
+            rd.close
+          ensure
+            if file
+              file.close
+              file.unlink
+            end
           end
         end
       end

activerecord/test/cases/query_cache_test.rb

@@ -565,37 +565,38 @@ class QueryCacheTest < ActiveRecord::TestCase
     }.call({})
   end
 
-  def test_clear_query_cache_is_called_on_all_connections
-    skip "with in memory db, reading role won't be able to see database on writing role" if in_memory_db?
-
-    ActiveRecord::Base.connected_to(role: :reading) do
-      db_config = ActiveRecord::Base.configurations.configs_for(env_name: "arunit", name: "primary")
-      ActiveRecord::Base.establish_connection(db_config)
-    end
-
-    mw = middleware { |env|
+  # with in memory db, reading role won't be able to see database on writing role
+  unless in_memory_db?
+    def test_clear_query_cache_is_called_on_all_connections
       ActiveRecord::Base.connected_to(role: :reading) do
-        @topic = Topic.first
+        db_config = ActiveRecord::Base.configurations.configs_for(env_name: "arunit", name: "primary")
+        ActiveRecord::Base.establish_connection(db_config)
       end
 
-      assert @topic
+      mw = middleware { |env|
+        ActiveRecord::Base.connected_to(role: :reading) do
+          @topic = Topic.first
+        end
 
-      ActiveRecord::Base.connected_to(role: :writing) do
-        @topic.title = "Topic title"
-        @topic.save!
-      end
+        assert @topic
 
-      assert_equal "Topic title", @topic.title
+        ActiveRecord::Base.connected_to(role: :writing) do
+          @topic.title = "Topic title"
+          @topic.save!
+        end
 
-      ActiveRecord::Base.connected_to(role: :reading) do
-        @topic = Topic.first
         assert_equal "Topic title", @topic.title
-      end
-    }
 
-    mw.call({})
-  ensure
-    clean_up_connection_handler
+        ActiveRecord::Base.connected_to(role: :reading) do
+          @topic = Topic.first
+          assert_equal "Topic title", @topic.title
+        end
+      }
+
+      mw.call({})
+    ensure
+      clean_up_connection_handler
+    end
   end
 
   test "query cache is enabled in threads with shared connection" do

railties/test/console_helpers.rb

@@ -18,8 +18,8 @@ module ConsoleHelpers
 
     assert_includes output, expected, "#{expected.inspect} expected, but got:\n\n#{output}"
   end
-
-  def available_pty?
-    defined?(PTY) && PTY.respond_to?(:open)
-  end
+end
+
+def available_pty?
+  defined?(PTY) && PTY.respond_to?(:open)
 end

railties/test/engine/commands_test.rb

@@ -30,35 +30,31 @@ class Rails::Engine::CommandsTest < ActiveSupport::TestCase
     assert_equal "test", output.strip
   end
 
-  def test_console_command_work_inside_engine
-    skip "PTY unavailable" unless available_pty?
+  if available_pty?
+    def test_console_command_work_inside_engine
+      primary, replica = PTY.open
+      cmd = "console --singleline"
+      spawn_command(cmd, replica)
+      assert_output(">", primary)
+    ensure
+      primary.puts "quit"
+    end
 
-    primary, replica = PTY.open
-    cmd = "console --singleline"
-    spawn_command(cmd, replica)
-    assert_output(">", primary)
-  ensure
-    primary.puts "quit"
-  end
+    def test_dbconsole_command_work_inside_engine
+      primary, replica = PTY.open
+      spawn_command("dbconsole", replica)
+      assert_output("sqlite>", primary)
+    ensure
+      primary.puts ".exit"
+    end
 
-  def test_dbconsole_command_work_inside_engine
-    skip "PTY unavailable" unless available_pty?
-
-    primary, replica = PTY.open
-    spawn_command("dbconsole", replica)
-    assert_output("sqlite>", primary)
-  ensure
-    primary.puts ".exit"
-  end
-
-  def test_server_command_work_inside_engine
-    skip "PTY unavailable" unless available_pty?
-
-    primary, replica = PTY.open
-    pid = spawn_command("server", replica)
-    assert_output("Listening on", primary)
-  ensure
-    kill(pid)
+    def test_server_command_work_inside_engine
+      primary, replica = PTY.open
+      pid = spawn_command("server", replica)
+      assert_output("Listening on", primary)
+    ensure
+      kill(pid)
+    end
   end
 
   private