2 files changed, 12 insertions, 37 deletions
diff --git a/activerecord/test/cases/adapters/postgresql/annotate_test.rb b/activerecord/test/cases/adapters/postgresql/annotate_test.rb
deleted file mode 100644
index 42a2861511..0000000000
--- a/activerecord/test/cases/adapters/postgresql/annotate_test.rb
+++ /dev/null
@@ -1,37 +0,0 @@
-# frozen_string_literal: true
-
-require "cases/helper"
-require "models/post"
-
-class PostgresqlAnnotateTest < ActiveRecord::PostgreSQLTestCase
-  fixtures :posts
-
-  def test_annotate_wraps_content_in_an_inline_comment
-    assert_sql(%r{\ASELECT "posts"\."id" FROM "posts" /\* foo \*/}) do
-      posts = Post.select(:id).annotate("foo")
-      assert posts.first
-    end
-  end
-
-  def test_annotate_is_sanitized
-    assert_sql(%r{\ASELECT "posts"\."id" FROM "posts" /\* foo \*/}) do
-      posts = Post.select(:id).annotate("*/foo/*")
-      assert posts.first
-    end
-
-    assert_sql(%r{\ASELECT "posts"\."id" FROM "posts" /\* foo \*/}) do
-      posts = Post.select(:id).annotate("**//foo//**")
-      assert posts.first
-    end
-
-    assert_sql(%r{\ASELECT "posts"\."id" FROM "posts" /\* foo \*/ /\* bar \*/}) do
-      posts = Post.select(:id).annotate("*/foo/*").annotate("*/bar")
-      assert posts.first
-    end
-
-    assert_sql(%r{\ASELECT "posts"\."id" FROM "posts" /\* \+ MAX_EXECUTION_TIME\(1\) \*/}) do
-      posts = Post.select(:id).annotate("+ MAX_EXECUTION_TIME(1)")
-      assert posts.first
-    end
-  end
-end
diff --git a/activerecord/test/cases/adapters/postgresql/postgresql_adapter_test.rb b/activerecord/test/cases/adapters/postgresql/postgresql_adapter_test.rb
index 68bc87eaf8..d99593817a 100644
--- a/activerecord/test/cases/adapters/postgresql/postgresql_adapter_test.rb
+++ b/activerecord/test/cases/adapters/postgresql/postgresql_adapter_test.rb
@@ -24,6 +24,18 @@ module ActiveRecord
         end
       end
 
+      def test_database_exists_returns_false_when_the_database_does_not_exist
+        config = { database: "non_extant_database", adapter: "postgresql" }
+        assert_not ActiveRecord::ConnectionAdapters::PostgreSQLAdapter.database_exists?(config),
+          "expected database #{config[:database]} to not exist"
+      end
+
+      def test_database_exists_returns_true_when_the_database_exists
+        config = ActiveRecord::Base.configurations["arunit"]
+        assert ActiveRecord::ConnectionAdapters::PostgreSQLAdapter.database_exists?(config),
+          "expected database #{config[:database]} to exist"
+      end
+
       def test_primary_key
         with_example_table do
           assert_equal "id", @connection.primary_key("ex")