[TESTS] tests.AddFixtures helper loads additional per-test fixtures

(cherry picked from commit 93a844dd13904c0ba1b7fd4a0a233002194a504b)
(cherry picked from commit 6d6d1a121ce3fc5cf7cd92ad1a38be3bdcbf7088)
(cherry picked from commit 34646f9886bb6b06dc1bd06b44c49c28ddb29aad)
(cherry picked from commit 83801a64cff076618fe14134c90f38b36a60675c)
(cherry picked from commit c9a1e55a80495effb8bd2b45b833943ba19f31d3)
(cherry picked from commit 6c7292419c2cda5cfaef5dde8bdef024dd9841ab)
(cherry picked from commit 5439218f1a3543fe6941a4dfbbe59784940d092c)

models/unittest/fixtures.go

@@ -7,6 +7,7 @@ package unittest
 import (
 	"fmt"
 	"os"
+	"path/filepath"
 	"time"
 
 	"code.gitea.io/gitea/models/db"
@@ -28,6 +29,16 @@ func GetXORMEngine(engine ...*xorm.Engine) (x *xorm.Engine) {
 	return db.DefaultContext.(*db.Context).Engine().(*xorm.Engine)
 }
 
+func OverrideFixtures(opts FixturesOptions, engine ...*xorm.Engine) func() {
+	old := fixturesLoader
+	if err := InitFixtures(opts, engine...); err != nil {
+		panic(err)
+	}
+	return func() {
+		fixturesLoader = old
+	}
+}
+
 // InitFixtures initialize test fixtures for a test database
 func InitFixtures(opts FixturesOptions, engine ...*xorm.Engine) (err error) {
 	e := GetXORMEngine(engine...)
@@ -37,6 +48,12 @@ func InitFixtures(opts FixturesOptions, engine ...*xorm.Engine) (err error) {
 	} else {
 		fixtureOptionFiles = testfixtures.Files(opts.Files...)
 	}
+	var fixtureOptionDirs []func(*testfixtures.Loader) error
+	if opts.Dirs != nil {
+		for _, dir := range opts.Dirs {
+			fixtureOptionDirs = append(fixtureOptionDirs, testfixtures.Directory(filepath.Join(opts.Base, dir)))
+		}
+	}
 	dialect := "unknown"
 	switch e.Dialect().URI().DBType {
 	case schemas.POSTGRES:
@@ -57,6 +74,7 @@ func InitFixtures(opts FixturesOptions, engine ...*xorm.Engine) (err error) {
 		testfixtures.DangerousSkipTestDatabaseCheck(),
 		fixtureOptionFiles,
 	}
+	loaderOptions = append(loaderOptions, fixtureOptionDirs...)
 
 	if e.Dialect().URI().DBType == schemas.POSTGRES {
 		loaderOptions = append(loaderOptions, testfixtures.SkipResetSequences())

models/unittest/testdb.go

@@ -197,6 +197,8 @@ func MainTest(m *testing.M, testOpts *TestOptions) {
 type FixturesOptions struct {
 	Dir   string
 	Files []string
+	Dirs  []string
+	Base  string
 }
 
 // CreateTestEngine creates a memory database and loads the fixture data from fixturesDir

tests/test_utils.go

@@ -267,3 +267,13 @@ func PrintCurrentTest(t testing.TB, skip ...int) func() {
 func Printf(format string, args ...any) {
 	testlogger.Printf(format, args...)
 }
+
+func AddFixtures(dirs ...string) func() {
+	return unittest.OverrideFixtures(
+		unittest.FixturesOptions{
+			Dir:  filepath.Join(filepath.Dir(setting.AppPath), "models/fixtures/"),
+			Base: filepath.Dir(setting.AppPath),
+			Dirs: dirs,
+		},
+	)
+}