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forgejo/tests/integration/db_collation_test.go
Gergely Nagy fde08f91fd
[GITEA] tests: A workaround for the MySQL collation tests
Because Forgejo run mysqld with `--innodb-flush-method=nosync` to speed
up the test suite, there are situations where a larger, database-wide
operation does not always fully manifest until later, not even when it
is wrapped in a transaction, nor when we use `FLUSH TABLES` and similar
methods.

In the case of the MySQL collation test, this *sometimes* results in the
database still responding with the old collation to a reader, even after
an `ALTER DATABASE ... COLLATE ...`.

In order to be able to still use the aforementioned flag and enjoy its
benefits, add a five second sleep between `db.ConvertDatabaseTable()`
and `db.CheckCollations()` in the `TestDatabaseCollation()` set of
tests.

This is not a fix - I don't think there is one possible -, but a
workaround. If it breaks again, the correct fix will be to remove the
flag from `mysqld` (it's not a supported flag to begin with).

Signed-off-by: Gergely Nagy <forgejo@gergo.csillger.hu>
(cherry picked from commit af18ed2ba9)
2024-02-05 16:57:55 +01:00

139 lines
5.2 KiB
Go

// Copyright 2023 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package integration
import (
"testing"
"time"
"code.gitea.io/gitea/models/db"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/test"
"code.gitea.io/gitea/tests"
"github.com/stretchr/testify/assert"
"xorm.io/xorm"
)
type TestCollationTbl struct {
ID int64
Txt string `xorm:"VARCHAR(10) UNIQUE"`
}
func TestDatabaseCollation(t *testing.T) {
x := db.GetEngine(db.DefaultContext).(*xorm.Engine)
// there are blockers for MSSQL to use case-sensitive collation, see the comments in db/collation.go
if setting.Database.Type.IsMSSQL() {
t.Skip("there are blockers for MSSQL to use case-sensitive collation")
return
}
// all created tables should use case-sensitive collation by default
_, _ = x.Exec("DROP TABLE IF EXISTS test_collation_tbl")
err := x.Sync(&TestCollationTbl{})
assert.NoError(t, err)
_, _ = x.Exec("INSERT INTO test_collation_tbl (txt) VALUES ('main')")
_, _ = x.Exec("INSERT INTO test_collation_tbl (txt) VALUES ('Main')") // case-sensitive, so it inserts a new row
_, _ = x.Exec("INSERT INTO test_collation_tbl (txt) VALUES ('main')") // duplicate, so it doesn't insert
cnt, err := x.Count(&TestCollationTbl{})
assert.NoError(t, err)
assert.EqualValues(t, 2, cnt)
_, _ = x.Exec("DROP TABLE IF EXISTS test_collation_tbl")
// by default, SQLite3 and PostgreSQL are using case-sensitive collations, but MySQL and MSSQL are not
// the following tests are only for MySQL and MSSQL
if !setting.Database.Type.IsMySQL() && !setting.Database.Type.IsMSSQL() {
t.Skip("only MySQL and MSSQL requires the case-sensitive collation check at the moment")
return
}
t.Run("Default startup makes database collation case-sensitive", func(t *testing.T) {
defer tests.PrintCurrentTest(t)()
r, err := db.CheckCollations(x)
assert.NoError(t, err)
assert.True(t, r.IsCollationCaseSensitive(r.DatabaseCollation))
assert.True(t, r.CollationEquals(r.ExpectedCollation, r.DatabaseCollation))
assert.NotEmpty(t, r.AvailableCollation)
assert.Empty(t, r.InconsistentCollationColumns)
// and by the way test the helper functions
if setting.Database.Type.IsMySQL() {
assert.True(t, r.IsCollationCaseSensitive("utf8mb4_bin"))
assert.True(t, r.IsCollationCaseSensitive("utf8mb4_xxx_as_cs"))
assert.False(t, r.IsCollationCaseSensitive("utf8mb4_general_ci"))
assert.True(t, r.CollationEquals("abc", "abc"))
assert.True(t, r.CollationEquals("abc", "utf8mb4_abc"))
assert.False(t, r.CollationEquals("utf8mb4_general_ci", "utf8mb4_unicode_ci"))
} else if setting.Database.Type.IsMSSQL() {
assert.True(t, r.IsCollationCaseSensitive("Latin1_General_CS_AS"))
assert.False(t, r.IsCollationCaseSensitive("Latin1_General_CI_AS"))
assert.True(t, r.CollationEquals("abc", "abc"))
assert.False(t, r.CollationEquals("Latin1_General_CS_AS", "SQL_Latin1_General_CP1_CS_AS"))
} else {
assert.Fail(t, "unexpected database type")
}
})
if setting.Database.Type.IsMSSQL() {
return // skip table converting tests because MSSQL doesn't have a simple solution at the moment
}
t.Run("Convert tables to utf8mb4_bin", func(t *testing.T) {
defer tests.PrintCurrentTest(t)()
defer test.MockVariableValue(&setting.Database.CharsetCollation, "utf8mb4_bin")()
assert.NoError(t, db.ConvertDatabaseTable())
time.Sleep(5 * time.Second)
r, err := db.CheckCollations(x)
assert.NoError(t, err)
assert.Equal(t, "utf8mb4_bin", r.DatabaseCollation)
assert.True(t, r.CollationEquals(r.ExpectedCollation, r.DatabaseCollation))
assert.Empty(t, r.InconsistentCollationColumns)
_, _ = x.Exec("DROP TABLE IF EXISTS test_tbl")
_, err = x.Exec("CREATE TABLE test_tbl (txt varchar(10) COLLATE utf8mb4_unicode_ci NOT NULL)")
assert.NoError(t, err)
r, err = db.CheckCollations(x)
assert.NoError(t, err)
assert.Contains(t, r.InconsistentCollationColumns, "test_tbl.txt")
})
t.Run("Convert tables to utf8mb4_general_ci", func(t *testing.T) {
defer tests.PrintCurrentTest(t)()
defer test.MockVariableValue(&setting.Database.CharsetCollation, "utf8mb4_general_ci")()
assert.NoError(t, db.ConvertDatabaseTable())
time.Sleep(5 * time.Second)
r, err := db.CheckCollations(x)
assert.NoError(t, err)
assert.Equal(t, "utf8mb4_general_ci", r.DatabaseCollation)
assert.True(t, r.CollationEquals(r.ExpectedCollation, r.DatabaseCollation))
assert.Empty(t, r.InconsistentCollationColumns)
_, _ = x.Exec("DROP TABLE IF EXISTS test_tbl")
_, err = x.Exec("CREATE TABLE test_tbl (txt varchar(10) COLLATE utf8mb4_bin NOT NULL)")
assert.NoError(t, err)
r, err = db.CheckCollations(x)
assert.NoError(t, err)
assert.Contains(t, r.InconsistentCollationColumns, "test_tbl.txt")
})
t.Run("Convert tables to default case-sensitive collation", func(t *testing.T) {
defer tests.PrintCurrentTest(t)()
defer test.MockVariableValue(&setting.Database.CharsetCollation, "")()
assert.NoError(t, db.ConvertDatabaseTable())
time.Sleep(5 * time.Second)
r, err := db.CheckCollations(x)
assert.NoError(t, err)
assert.True(t, r.IsCollationCaseSensitive(r.DatabaseCollation))
assert.True(t, r.CollationEquals(r.ExpectedCollation, r.DatabaseCollation))
assert.Empty(t, r.InconsistentCollationColumns)
})
}