138942c09e
- Go's deadcode eliminator is quite simple, if you put a public function in a package `aa/bb` that is used only by tests, it would still be built if package `aa/bb` was imported. This means that if such functions use libraries relevant only to tests that those libraries would still be be built and increase the binary size of a Go binary. - This is also the case with Forgejo, `models/migrations/base/tests.go` contained functions exclusively used by tests which (skipping some steps here) imports https://github.com/ClickHouse/clickhouse-go, which is 2MiB. The `code.gitea.io/gitea/models/migrations/base` package is imported by `cmd/doctor` and thus the code of the clickhouse library is also built and included in the Forgejo binary, although entirely unused and not reachable. - This patch moves the test-related functions to their own package, so Go's deadcode eliminator knows not to build the test-related functions and thus reduces the size of the Forgejo binary. - It is not possible to move this to a `_test.go` file because Go does not allow importing functions from such files, so any test helper function must be in a non-test package and file. - Reduction of size (built with `TAGS="sqlite sqlite_unlock_notify" make build`): - Before: 95912040 bytes (92M) - After: 92306888 bytes (89M)
98 lines
2.4 KiB
Go
98 lines
2.4 KiB
Go
// Copyright 2022 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package base
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import (
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"testing"
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migrations_tests "code.gitea.io/gitea/models/migrations/test"
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"code.gitea.io/gitea/modules/timeutil"
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"xorm.io/xorm/names"
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)
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func Test_DropTableColumns(t *testing.T) {
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x, deferable := migrations_tests.PrepareTestEnv(t, 0)
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if x == nil || t.Failed() {
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defer deferable()
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return
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}
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defer deferable()
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type DropTest struct {
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ID int64 `xorm:"pk autoincr"`
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FirstColumn string
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ToDropColumn string `xorm:"unique"`
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AnotherColumn int64
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CreatedUnix timeutil.TimeStamp `xorm:"INDEX created"`
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UpdatedUnix timeutil.TimeStamp `xorm:"INDEX updated"`
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}
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columns := []string{
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"first_column",
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"to_drop_column",
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"another_column",
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"created_unix",
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"updated_unix",
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}
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x.SetMapper(names.GonicMapper{})
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for i := range columns {
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if err := x.Sync(new(DropTest)); err != nil {
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t.Errorf("unable to create DropTest table: %v", err)
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return
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}
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sess := x.NewSession()
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if err := sess.Begin(); err != nil {
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sess.Close()
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t.Errorf("unable to begin transaction: %v", err)
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return
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}
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if err := DropTableColumns(sess, "drop_test", columns[i:]...); err != nil {
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sess.Close()
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t.Errorf("Unable to drop columns[%d:]: %s from drop_test: %v", i, columns[i:], err)
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return
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}
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if err := sess.Commit(); err != nil {
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sess.Close()
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t.Errorf("unable to commit transaction: %v", err)
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return
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}
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sess.Close()
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if err := x.DropTables(new(DropTest)); err != nil {
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t.Errorf("unable to drop table: %v", err)
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return
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}
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for j := range columns[i+1:] {
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if err := x.Sync(new(DropTest)); err != nil {
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t.Errorf("unable to create DropTest table: %v", err)
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return
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}
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dropcols := append([]string{columns[i]}, columns[j+i+1:]...)
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sess := x.NewSession()
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if err := sess.Begin(); err != nil {
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sess.Close()
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t.Errorf("unable to begin transaction: %v", err)
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return
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}
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if err := DropTableColumns(sess, "drop_test", dropcols...); err != nil {
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sess.Close()
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t.Errorf("Unable to drop columns: %s from drop_test: %v", dropcols, err)
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return
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}
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if err := sess.Commit(); err != nil {
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sess.Close()
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t.Errorf("unable to commit transaction: %v", err)
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return
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}
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sess.Close()
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if err := x.DropTables(new(DropTest)); err != nil {
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t.Errorf("unable to drop table: %v", err)
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return
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}
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}
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}
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}
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