chore: Move httpapi, httpmw, & database into coderd (#568)

* chore: Move httpmw to /coderd directory
httpmw is specific to coderd and should be scoped under coderd

* chore: Move httpapi to /coderd directory
httpapi is specific to coderd and should be scoped under coderd

* chore: Move database  to /coderd directory
database is specific to coderd and should be scoped under coderd

* chore: Update codecov & gitattributes for generated files
* chore: Update Makefile

coderd/database/migrate_test.go

@@ -0,0 +1,77 @@
+//go:build linux
+
+package database_test
+
+import (
+	"database/sql"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"go.uber.org/goleak"
+
+	"github.com/coder/coder/coderd/database"
+	"github.com/coder/coder/coderd/database/postgres"
+)
+
+func TestMain(m *testing.M) {
+	goleak.VerifyTestMain(m)
+}
+
+func TestMigrate(t *testing.T) {
+	t.Parallel()
+
+	if testing.Short() {
+		t.Skip()
+		return
+	}
+
+	t.Run("Once", func(t *testing.T) {
+		t.Parallel()
+
+		db := testSQLDB(t)
+
+		err := database.MigrateUp(db)
+		require.NoError(t, err)
+	})
+
+	t.Run("Twice", func(t *testing.T) {
+		t.Parallel()
+
+		db := testSQLDB(t)
+
+		err := database.MigrateUp(db)
+		require.NoError(t, err)
+
+		err = database.MigrateUp(db)
+		require.NoError(t, err)
+	})
+
+	t.Run("UpDownUp", func(t *testing.T) {
+		t.Parallel()
+
+		db := testSQLDB(t)
+
+		err := database.MigrateUp(db)
+		require.NoError(t, err)
+
+		err = database.MigrateDown(db)
+		require.NoError(t, err)
+
+		err = database.MigrateUp(db)
+		require.NoError(t, err)
+	})
+}
+
+func testSQLDB(t testing.TB) *sql.DB {
+	t.Helper()
+
+	connection, closeFn, err := postgres.Open()
+	require.NoError(t, err)
+	t.Cleanup(closeFn)
+
+	db, err := sql.Open("postgres", connection)
+	require.NoError(t, err)
+	t.Cleanup(func() { _ = db.Close() })
+
+	return db
+}