mirror of https://github.com/go-gorm/gorm.git
117 lines
2.9 KiB
Go
117 lines
2.9 KiB
Go
package gorm_test
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import (
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"os"
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"reflect"
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"sort"
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"testing"
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)
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type Blog struct {
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ID uint `gorm:"primary_key"`
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Locale string `gorm:"primary_key"`
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Subject string
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Body string
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Tags []Tag `gorm:"many2many:blog_tags;"`
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}
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type Tag struct {
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ID uint `gorm:"primary_key"`
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Locale string `gorm:"primary_key"`
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Value string
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}
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func compareTags(tags []Tag, contents []string) bool {
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var tagContents []string
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for _, tag := range tags {
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tagContents = append(tagContents, tag.Value)
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}
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sort.Strings(tagContents)
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sort.Strings(contents)
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return reflect.DeepEqual(tagContents, contents)
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}
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func TestManyToManyWithMultiPrimaryKeys(t *testing.T) {
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if dialect := os.Getenv("GORM_DIALECT"); dialect != "" && dialect != "sqlite" {
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DB.DropTable(&Blog{}, &Tag{})
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DB.DropTable("blog_tags")
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DB.CreateTable(&Blog{}, &Tag{})
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blog := Blog{
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Locale: "ZH",
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Subject: "subject",
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Body: "body",
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Tags: []Tag{
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{Locale: "ZH", Value: "tag1"},
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{Locale: "ZH", Value: "tag2"},
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},
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}
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DB.Save(&blog)
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if !compareTags(blog.Tags, []string{"tag1", "tag2"}) {
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t.Errorf("Blog should has two tags")
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}
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// Append
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var tag3 = &Tag{Locale: "ZH", Value: "tag3"}
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DB.Model(&blog).Association("Tags").Append([]*Tag{tag3})
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if !compareTags(blog.Tags, []string{"tag1", "tag2", "tag3"}) {
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t.Errorf("Blog should has three tags after Append")
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}
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if DB.Model(&blog).Association("Tags").Count() != 3 {
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t.Errorf("Blog should has three tags after Append")
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}
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var tags []Tag
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DB.Model(&blog).Related(&tags, "Tags")
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if !compareTags(tags, []string{"tag1", "tag2", "tag3"}) {
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t.Errorf("Should find 3 tags with Related")
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}
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var blog1 Blog
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DB.Preload("Tags").Find(&blog1)
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if !compareTags(blog1.Tags, []string{"tag1", "tag2", "tag3"}) {
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t.Errorf("Preload many2many relations")
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}
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// Replace
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var tag5 = &Tag{Locale: "ZH", Value: "tag5"}
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var tag6 = &Tag{Locale: "ZH", Value: "tag6"}
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DB.Model(&blog).Association("Tags").Replace(tag5, tag6)
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var tags2 []Tag
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DB.Model(&blog).Related(&tags2, "Tags")
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if !compareTags(tags2, []string{"tag5", "tag6"}) {
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t.Errorf("Should find 2 tags after Replace")
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}
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if DB.Model(&blog).Association("Tags").Count() != 2 {
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t.Errorf("Blog should has three tags after Replace")
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}
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// Delete
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DB.Model(&blog).Association("Tags").Delete(tag5)
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var tags3 []Tag
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DB.Model(&blog).Related(&tags3, "Tags")
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if !compareTags(tags3, []string{"tag6"}) {
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t.Errorf("Should find 1 tags after Delete")
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}
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if DB.Model(&blog).Association("Tags").Count() != 1 {
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t.Errorf("Blog should has three tags after Delete")
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}
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DB.Model(&blog).Association("Tags").Delete(tag3)
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var tags4 []Tag
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DB.Model(&blog).Related(&tags4, "Tags")
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if !compareTags(tags4, []string{"tag6"}) {
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t.Errorf("Tag should not be deleted when Delete with a unrelated tag")
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}
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// Clear
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DB.Model(&blog).Association("Tags").Clear()
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if DB.Model(&blog).Association("Tags").Count() != 0 {
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t.Errorf("All tags should be cleared")
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}
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}
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}
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