1 files changed, 372 insertions, 0 deletions
diff --git a/activerecord/test/cases/tasks/postgresql_rake_test.rb b/activerecord/test/cases/tasks/postgresql_rake_test.rb
new file mode 100644
index 0000000000..ca1defa332
--- /dev/null
+++ b/activerecord/test/cases/tasks/postgresql_rake_test.rb
@@ -0,0 +1,372 @@
+# frozen_string_literal: true
+
+require "cases/helper"
+require "active_record/tasks/database_tasks"
+
+if current_adapter?(:PostgreSQLAdapter)
+  module ActiveRecord
+    class PostgreSQLDBCreateTest < ActiveRecord::TestCase
+      def setup
+        @connection    = stub(create_database: true)
+        @configuration = {
+          "adapter"  => "postgresql",
+          "database" => "my-app-db"
+        }
+
+        ActiveRecord::Base.stubs(:connection).returns(@connection)
+        ActiveRecord::Base.stubs(:establish_connection).returns(true)
+
+        $stdout, @original_stdout = StringIO.new, $stdout
+        $stderr, @original_stderr = StringIO.new, $stderr
+      end
+
+      def teardown
+        $stdout, $stderr = @original_stdout, @original_stderr
+      end
+
+      def test_establishes_connection_to_postgresql_database
+        ActiveRecord::Base.expects(:establish_connection).with(
+          "adapter"            => "postgresql",
+          "database"           => "postgres",
+          "schema_search_path" => "public"
+        )
+
+        ActiveRecord::Tasks::DatabaseTasks.create @configuration
+      end
+
+      def test_creates_database_with_default_encoding
+        @connection.expects(:create_database).
+          with("my-app-db", @configuration.merge("encoding" => "utf8"))
+
+        ActiveRecord::Tasks::DatabaseTasks.create @configuration
+      end
+
+      def test_creates_database_with_given_encoding
+        @connection.expects(:create_database).
+          with("my-app-db", @configuration.merge("encoding" => "latin"))
+
+        ActiveRecord::Tasks::DatabaseTasks.create @configuration.
+          merge("encoding" => "latin")
+      end
+
+      def test_creates_database_with_given_collation_and_ctype
+        @connection.expects(:create_database).
+          with("my-app-db", @configuration.merge("encoding" => "utf8", "collation" => "ja_JP.UTF8", "ctype" => "ja_JP.UTF8"))
+
+        ActiveRecord::Tasks::DatabaseTasks.create @configuration.
+          merge("collation" => "ja_JP.UTF8", "ctype" => "ja_JP.UTF8")
+      end
+
+      def test_establishes_connection_to_new_database
+        ActiveRecord::Base.expects(:establish_connection).with(@configuration)
+
+        ActiveRecord::Tasks::DatabaseTasks.create @configuration
+      end
+
+      def test_db_create_with_error_prints_message
+        ActiveRecord::Base.stubs(:establish_connection).raises(Exception)
+
+        $stderr.stubs(:puts).returns(true)
+        $stderr.expects(:puts).
+          with("Couldn't create database for #{@configuration.inspect}")
+
+        assert_raises(Exception) { ActiveRecord::Tasks::DatabaseTasks.create @configuration }
+      end
+
+      def test_when_database_created_successfully_outputs_info_to_stdout
+        ActiveRecord::Tasks::DatabaseTasks.create @configuration
+
+        assert_equal "Created database 'my-app-db'\n", $stdout.string
+      end
+
+      def test_create_when_database_exists_outputs_info_to_stderr
+        ActiveRecord::Base.connection.stubs(:create_database).raises(
+          ActiveRecord::Tasks::DatabaseAlreadyExists
+        )
+
+        ActiveRecord::Tasks::DatabaseTasks.create @configuration
+
+        assert_equal "Database 'my-app-db' already exists\n", $stderr.string
+      end
+    end
+
+    class PostgreSQLDBDropTest < ActiveRecord::TestCase
+      def setup
+        @connection    = stub(drop_database: true)
+        @configuration = {
+          "adapter"  => "postgresql",
+          "database" => "my-app-db"
+        }
+
+        ActiveRecord::Base.stubs(:connection).returns(@connection)
+        ActiveRecord::Base.stubs(:establish_connection).returns(true)
+
+        $stdout, @original_stdout = StringIO.new, $stdout
+        $stderr, @original_stderr = StringIO.new, $stderr
+      end
+
+      def teardown
+        $stdout, $stderr = @original_stdout, @original_stderr
+      end
+
+      def test_establishes_connection_to_postgresql_database
+        ActiveRecord::Base.expects(:establish_connection).with(
+          "adapter"            => "postgresql",
+          "database"           => "postgres",
+          "schema_search_path" => "public"
+        )
+
+        ActiveRecord::Tasks::DatabaseTasks.drop @configuration
+      end
+
+      def test_drops_database
+        @connection.expects(:drop_database).with("my-app-db")
+
+        ActiveRecord::Tasks::DatabaseTasks.drop @configuration
+      end
+
+      def test_when_database_dropped_successfully_outputs_info_to_stdout
+        ActiveRecord::Tasks::DatabaseTasks.drop @configuration
+
+        assert_equal "Dropped database 'my-app-db'\n", $stdout.string
+      end
+    end
+
+    class PostgreSQLPurgeTest < ActiveRecord::TestCase
+      def setup
+        @connection    = stub(create_database: true, drop_database: true)
+        @configuration = {
+          "adapter"  => "postgresql",
+          "database" => "my-app-db"
+        }
+
+        ActiveRecord::Base.stubs(:connection).returns(@connection)
+        ActiveRecord::Base.stubs(:clear_active_connections!).returns(true)
+        ActiveRecord::Base.stubs(:establish_connection).returns(true)
+      end
+
+      def test_clears_active_connections
+        ActiveRecord::Base.expects(:clear_active_connections!)
+
+        ActiveRecord::Tasks::DatabaseTasks.purge @configuration
+      end
+
+      def test_establishes_connection_to_postgresql_database
+        ActiveRecord::Base.expects(:establish_connection).with(
+          "adapter"            => "postgresql",
+          "database"           => "postgres",
+          "schema_search_path" => "public"
+        )
+
+        ActiveRecord::Tasks::DatabaseTasks.purge @configuration
+      end
+
+      def test_drops_database
+        @connection.expects(:drop_database).with("my-app-db")
+
+        ActiveRecord::Tasks::DatabaseTasks.purge @configuration
+      end
+
+      def test_creates_database
+        @connection.expects(:create_database).
+          with("my-app-db", @configuration.merge("encoding" => "utf8"))
+
+        ActiveRecord::Tasks::DatabaseTasks.purge @configuration
+      end
+
+      def test_establishes_connection
+        ActiveRecord::Base.expects(:establish_connection).with(@configuration)
+
+        ActiveRecord::Tasks::DatabaseTasks.purge @configuration
+      end
+    end
+
+    class PostgreSQLDBCharsetTest < ActiveRecord::TestCase
+      def setup
+        @connection    = stub(create_database: true)
+        @configuration = {
+          "adapter"  => "postgresql",
+          "database" => "my-app-db"
+        }
+
+        ActiveRecord::Base.stubs(:connection).returns(@connection)
+        ActiveRecord::Base.stubs(:establish_connection).returns(true)
+      end
+
+      def test_db_retrieves_charset
+        @connection.expects(:encoding)
+        ActiveRecord::Tasks::DatabaseTasks.charset @configuration
+      end
+    end
+
+    class PostgreSQLDBCollationTest < ActiveRecord::TestCase
+      def setup
+        @connection    = stub(create_database: true)
+        @configuration = {
+          "adapter"  => "postgresql",
+          "database" => "my-app-db"
+        }
+
+        ActiveRecord::Base.stubs(:connection).returns(@connection)
+        ActiveRecord::Base.stubs(:establish_connection).returns(true)
+      end
+
+      def test_db_retrieves_collation
+        @connection.expects(:collation)
+        ActiveRecord::Tasks::DatabaseTasks.collation @configuration
+      end
+    end
+
+    class PostgreSQLStructureDumpTest < ActiveRecord::TestCase
+      def setup
+        @connection    = stub(schema_search_path: nil, structure_dump: true)
+        @configuration = {
+          "adapter"  => "postgresql",
+          "database" => "my-app-db"
+        }
+        @filename = "/tmp/awesome-file.sql"
+        FileUtils.touch(@filename)
+
+        ActiveRecord::Base.stubs(:connection).returns(@connection)
+        ActiveRecord::Base.stubs(:establish_connection).returns(true)
+      end
+
+      def teardown
+        FileUtils.rm_f(@filename)
+      end
+
+      def test_structure_dump
+        Kernel.expects(:system).with("pg_dump", "-s", "-x", "-O", "-f", @filename, "my-app-db").returns(true)
+
+        ActiveRecord::Tasks::DatabaseTasks.structure_dump(@configuration, @filename)
+      end
+
+      def test_structure_dump_header_comments_removed
+        Kernel.stubs(:system).returns(true)
+        File.write(@filename, "-- header comment\n\n-- more header comment\n statement \n-- lower comment\n")
+
+        ActiveRecord::Tasks::DatabaseTasks.structure_dump(@configuration, @filename)
+
+        assert_equal [" statement \n", "-- lower comment\n"], File.readlines(@filename).first(2)
+      end
+
+      def test_structure_dump_with_extra_flags
+        expected_command = ["pg_dump", "-s", "-x", "-O", "-f", @filename, "--noop", "my-app-db"]
+
+        assert_called_with(Kernel, :system, expected_command, returns: true) do
+          with_structure_dump_flags(["--noop"]) do
+            ActiveRecord::Tasks::DatabaseTasks.structure_dump(@configuration, @filename)
+          end
+        end
+      end
+
+      def test_structure_dump_with_ignore_tables
+        ActiveRecord::SchemaDumper.expects(:ignore_tables).returns(["foo", "bar"])
+
+        Kernel.expects(:system).with("pg_dump", "-s", "-x", "-O", "-f", @filename, "-T", "foo", "-T", "bar", "my-app-db").returns(true)
+
+        ActiveRecord::Tasks::DatabaseTasks.structure_dump(@configuration, @filename)
+      end
+
+      def test_structure_dump_with_schema_search_path
+        @configuration["schema_search_path"] = "foo,bar"
+
+        Kernel.expects(:system).with("pg_dump", "-s", "-x", "-O", "-f", @filename, "--schema=foo", "--schema=bar", "my-app-db").returns(true)
+
+        ActiveRecord::Tasks::DatabaseTasks.structure_dump(@configuration, @filename)
+      end
+
+      def test_structure_dump_with_schema_search_path_and_dump_schemas_all
+        @configuration["schema_search_path"] = "foo,bar"
+
+        Kernel.expects(:system).with("pg_dump", "-s", "-x", "-O", "-f", @filename,  "my-app-db").returns(true)
+
+        with_dump_schemas(:all) do
+          ActiveRecord::Tasks::DatabaseTasks.structure_dump(@configuration, @filename)
+        end
+      end
+
+      def test_structure_dump_with_dump_schemas_string
+        Kernel.expects(:system).with("pg_dump", "-s", "-x", "-O", "-f", @filename, "--schema=foo", "--schema=bar", "my-app-db").returns(true)
+
+        with_dump_schemas("foo,bar") do
+          ActiveRecord::Tasks::DatabaseTasks.structure_dump(@configuration, @filename)
+        end
+      end
+
+      def test_structure_dump_execution_fails
+        filename = "awesome-file.sql"
+        Kernel.expects(:system).with("pg_dump", "-s", "-x", "-O", "-f", filename, "my-app-db").returns(nil)
+
+        e = assert_raise(RuntimeError) do
+          ActiveRecord::Tasks::DatabaseTasks.structure_dump(@configuration, filename)
+        end
+        assert_match("failed to execute:", e.message)
+      end
+
+      private
+        def with_dump_schemas(value, &block)
+          old_dump_schemas = ActiveRecord::Base.dump_schemas
+          ActiveRecord::Base.dump_schemas = value
+          yield
+        ensure
+          ActiveRecord::Base.dump_schemas = old_dump_schemas
+        end
+
+        def with_structure_dump_flags(flags)
+          old = ActiveRecord::Tasks::DatabaseTasks.structure_dump_flags
+          ActiveRecord::Tasks::DatabaseTasks.structure_dump_flags = flags
+          yield
+        ensure
+          ActiveRecord::Tasks::DatabaseTasks.structure_dump_flags = old
+        end
+    end
+
+    class PostgreSQLStructureLoadTest < ActiveRecord::TestCase
+      def setup
+        @connection    = stub
+        @configuration = {
+          "adapter"  => "postgresql",
+          "database" => "my-app-db"
+        }
+
+        ActiveRecord::Base.stubs(:connection).returns(@connection)
+        ActiveRecord::Base.stubs(:establish_connection).returns(true)
+      end
+
+      def test_structure_load
+        filename = "awesome-file.sql"
+        Kernel.expects(:system).with("psql", "-v", "ON_ERROR_STOP=1", "-q", "-f", filename, @configuration["database"]).returns(true)
+
+        ActiveRecord::Tasks::DatabaseTasks.structure_load(@configuration, filename)
+      end
+
+      def test_structure_load_with_extra_flags
+        filename = "awesome-file.sql"
+        expected_command = ["psql", "-v", "ON_ERROR_STOP=1", "-q", "-f", filename, "--noop", @configuration["database"]]
+
+        assert_called_with(Kernel, :system, expected_command, returns: true) do
+          with_structure_load_flags(["--noop"]) do
+            ActiveRecord::Tasks::DatabaseTasks.structure_load(@configuration, filename)
+          end
+        end
+      end
+
+      def test_structure_load_accepts_path_with_spaces
+        filename = "awesome file.sql"
+        Kernel.expects(:system).with("psql", "-v", "ON_ERROR_STOP=1", "-q", "-f", filename, @configuration["database"]).returns(true)
+
+        ActiveRecord::Tasks::DatabaseTasks.structure_load(@configuration, filename)
+      end
+
+      private
+        def with_structure_load_flags(flags)
+          old = ActiveRecord::Tasks::DatabaseTasks.structure_load_flags
+          ActiveRecord::Tasks::DatabaseTasks.structure_load_flags = flags
+          yield
+        ensure
+          ActiveRecord::Tasks::DatabaseTasks.structure_load_flags = old
+        end
+    end
+  end
+end