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test(clause/joins): add join unit test (#5832)
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package clause_test | ||
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import ( | ||
"sync" | ||
"testing" | ||
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"gorm.io/gorm" | ||
"gorm.io/gorm/clause" | ||
"gorm.io/gorm/schema" | ||
"gorm.io/gorm/utils/tests" | ||
) | ||
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func TestJoin(t *testing.T) { | ||
results := []struct { | ||
name string | ||
join clause.Join | ||
sql string | ||
}{ | ||
{ | ||
name: "LEFT JOIN", | ||
join: clause.Join{ | ||
Type: clause.LeftJoin, | ||
Table: clause.Table{Name: "user"}, | ||
ON: clause.Where{ | ||
Exprs: []clause.Expression{clause.Eq{clause.Column{Table: "user_info", Name: "user_id"}, clause.PrimaryColumn}}, | ||
}, | ||
}, | ||
sql: "LEFT JOIN `user` ON `user_info`.`user_id` = `users`.`id`", | ||
}, | ||
{ | ||
name: "RIGHT JOIN", | ||
join: clause.Join{ | ||
Type: clause.RightJoin, | ||
Table: clause.Table{Name: "user"}, | ||
ON: clause.Where{ | ||
Exprs: []clause.Expression{clause.Eq{clause.Column{Table: "user_info", Name: "user_id"}, clause.PrimaryColumn}}, | ||
}, | ||
}, | ||
sql: "RIGHT JOIN `user` ON `user_info`.`user_id` = `users`.`id`", | ||
}, | ||
{ | ||
name: "INNER JOIN", | ||
join: clause.Join{ | ||
Type: clause.InnerJoin, | ||
Table: clause.Table{Name: "user"}, | ||
ON: clause.Where{ | ||
Exprs: []clause.Expression{clause.Eq{clause.Column{Table: "user_info", Name: "user_id"}, clause.PrimaryColumn}}, | ||
}, | ||
}, | ||
sql: "INNER JOIN `user` ON `user_info`.`user_id` = `users`.`id`", | ||
}, | ||
{ | ||
name: "CROSS JOIN", | ||
join: clause.Join{ | ||
Type: clause.CrossJoin, | ||
Table: clause.Table{Name: "user"}, | ||
ON: clause.Where{ | ||
Exprs: []clause.Expression{clause.Eq{clause.Column{Table: "user_info", Name: "user_id"}, clause.PrimaryColumn}}, | ||
}, | ||
}, | ||
sql: "CROSS JOIN `user` ON `user_info`.`user_id` = `users`.`id`", | ||
}, | ||
{ | ||
name: "USING", | ||
join: clause.Join{ | ||
Type: clause.InnerJoin, | ||
Table: clause.Table{Name: "user"}, | ||
Using: []string{"id"}, | ||
}, | ||
sql: "INNER JOIN `user` USING (`id`)", | ||
}, | ||
{ | ||
name: "Expression", | ||
join: clause.Join{ | ||
// Invalid | ||
Type: clause.LeftJoin, | ||
Table: clause.Table{Name: "user"}, | ||
ON: clause.Where{ | ||
Exprs: []clause.Expression{clause.Eq{clause.Column{Table: "user_info", Name: "user_id"}, clause.PrimaryColumn}}, | ||
}, | ||
// Valid | ||
Expression: clause.Join{ | ||
Type: clause.InnerJoin, | ||
Table: clause.Table{Name: "user"}, | ||
Using: []string{"id"}, | ||
}, | ||
}, | ||
sql: "INNER JOIN `user` USING (`id`)", | ||
}, | ||
} | ||
for _, result := range results { | ||
t.Run(result.name, func(t *testing.T) { | ||
user, _ := schema.Parse(&tests.User{}, &sync.Map{}, db.NamingStrategy) | ||
stmt := &gorm.Statement{DB: db, Table: user.Table, Schema: user, Clauses: map[string]clause.Clause{}} | ||
result.join.Build(stmt) | ||
if result.sql != stmt.SQL.String() { | ||
t.Errorf("want: %s, got: %s", result.sql, stmt.SQL.String()) | ||
} | ||
}) | ||
} | ||
} |