for k, v := range map[string][]string{
		"table.name":         {"table", "name"},
		"`table`.`name`":     {"table", "name"},
		"'table'.'name'":     {"table", "name"},
		"'table'.name":       {"table", "name"},
		"table1.name_23":     {"table1", "name_23"},
		"`table_1`.`name23`": {"table_1", "name23"},
		"'table23'.'name_1'": {"table23", "name_1"},
		"'table23'.name1":    {"table23", "name1"},
		"'name1'":            {"", "name1"},

		}

		if DB.Migrator().HasConstraint(&User{}, name) {
			t.Fatalf("constraint %v should been deleted", name)
		}

		if err := DB.Migrator().CreateConstraint(&User{}, name); err != nil {
			t.Fatalf("failed to create constraint %v, got error %v", name, err)
		}

		if !DB.Migrator().HasConstraint(&User{}, name) {
			t.Fatalf("failed to found constraint %v", name)
		}
	}
}

	DB.Where("name1 = @name OR name2 = @name OR name3 = @name", sql.Named("name", "jinzhu2")).First(&result2)

	AssertEqual(t, result2, namedUser)

	var result3 NamedUser
	DB.Where("name1 = @name OR name2 = @name OR name3 = @name", map[string]interface{}{"name": "jinzhu2"}).First(&result3)

	AssertEqual(t, result3, namedUser)

	var result4 NamedUser

	}, {
		SQL:          "name1 = @name1 AND name2 = @name2 AND name3 = @name1",
		Vars:         []interface{}{sql.Named("name1", "jinzhu"), sql.Named("name2", "jinzhu2")},
		Result:       "name1 = ? AND name2 = ? AND name3 = ?",
		ExpectedVars: []interface{}{"jinzhu", "jinzhu2", "jinzhu"},
	}, {
		SQL:          "name1 = @name1 AND name2 = @name2 AND name3 = @name1",
		Vars:         []interface{}{map[string]interface{}{"name1": "jinzhu", "name2": "jinzhu2"}},

		{Name: "Name3", DBName: "name3", BindNames: []string{"Name3"}, DataType: schema.String, Tag: `gorm:"<-"`, Creatable: true, Updatable: true, Readable: true},
		{Name: "Name4", DBName: "name4", BindNames: []string{"Name4"}, DataType: schema.String, Tag: `gorm:"<-:create"`, Creatable: true, Updatable: false, Readable: true},

	}

	results := []*schema.Index{
		{
			Name:   "idx_user_indices_name",
			Fields: []schema.IndexOption{{Field: &schema.Field{Name: "Name"}}},
		},
		{
			Name:   "idx_name",
			Class:  "UNIQUE",
			Fields: []schema.IndexOption{{Field: &schema.Field{Name: "Name2", UniqueIndex: "idx_name"}}},
		},
		{
			Name:  "idx_user_indices_name3",
			Type:  "btree",
			Where: "name3 != 'jinzhu'",
			Fields: []schema.IndexOption{{

	}

	var names []string
	DB.Table("users").Where("name like ?", "distinct%").Order("name").Pluck("name", &names)
	AssertEqual(t, names, []string{"distinct", "distinct", "distinct", "distinct-2", "distinct-3"})

	var names1 []string
	DB.Model(&User{}).Where("name like ?", "distinct%").Distinct().Order("name").Pluck("Name", &names1)

	AssertEqual(t, names1, []string{"distinct", "distinct-2", "distinct-3"})

        assertFalse(name1.equals(name2));
    }

    @Test
    void equals_withBothNullScope_shouldReturnTrue() {
        Name name1 = new Name(mockConfig, "TEST", 0x20, null);
        name1.scope = null;
        Name name2 = new Name(mockConfig, "TEST", 0x20, null);
        name2.scope = null;

        assertTrue(name1.equals(name2));
    }

    @Test

        for (String name : expectedNames) {
            bb.put(name.getBytes(StandardCharsets.UTF_16LE));
            bb.putShort((short) 0);
        }

        referral.decode(testBuffer, 0, testBuffer.length);

        assertArrayEquals(expectedNames, referral.getExpandedNames());
    }

		}
		// Symlink will not be added to entries.
		if err := os.Symlink(filepath.Join(dir, name1), filepath.Join(dir, name2)); err != nil {
			t.Fatalf("Unable to create a symlink, %s", err)
		}
		// Add to entries.
		entries = append(entries, name1)
		// Symlinks are preserved for regular files
		entries = append(entries, name2)
	}
	if err := os.MkdirAll(filepath.Join(dir, "mydir"), 0o777); err != nil {