gorm/expecter_result.go
2017-11-20 18:38:57 +08:00

117 lines
2.5 KiB
Go

package gorm
import (
"database/sql/driver"
"fmt"
"reflect"
"github.com/davecgh/go-spew/spew"
sqlmock "gopkg.in/DATA-DOG/go-sqlmock.v1"
)
type ExpectedQuery interface {
Returns(model interface{}) ExpectedQuery
}
type ExpectedExec interface {
Returns(result driver.Result) ExpectedExec
}
// SqlmockQuery implements Query for asserter go-sqlmock
type SqlmockQuery struct {
scope *Scope
query *sqlmock.ExpectedQuery
}
func getRowForFields(fields []*Field) []driver.Value {
var values []driver.Value
for _, field := range fields {
if field.IsNormal {
value := field.Field
// dereference pointers
if field.Field.Kind() == reflect.Ptr {
value = reflect.Indirect(field.Field)
}
// check if we have a zero Value
if !value.IsValid() {
values = append(values, nil)
continue
}
concreteVal := value.Interface()
// if we already have a driver.Value, just append
_, isValuer := concreteVal.(driver.Valuer)
spew.Printf("%s: %v\r\n", field.DBName, isValuer)
if driver.IsValue(concreteVal) {
values = append(values, concreteVal)
} else if valuer, ok := concreteVal.(driver.Valuer); ok {
if convertedValue, err := valuer.Value(); err == nil {
values = append(values, convertedValue)
}
}
}
}
return values
}
func (q *SqlmockQuery) getRowsForOutType(out interface{}) *sqlmock.Rows {
var columns []string
for _, field := range (&Scope{}).New(out).GetModelStruct().StructFields {
if field.IsNormal {
columns = append(columns, field.DBName)
}
}
rows := sqlmock.NewRows(columns)
outVal := indirect(reflect.ValueOf(out))
if outVal.Kind() == reflect.Slice {
outSlice := []interface{}{}
for i := 0; i < outVal.Len(); i++ {
outSlice = append(outSlice, outVal.Index(i).Interface())
}
for _, outElem := range outSlice {
scope := &Scope{Value: outElem}
row := getRowForFields(scope.Fields())
rows = rows.AddRow(row...)
}
} else if outVal.Kind() == reflect.Struct {
scope := &Scope{Value: out}
row := getRowForFields(scope.Fields())
rows = rows.AddRow(row...)
} else {
panic(fmt.Errorf("Can only get rows for slice or struct"))
}
spew.Dump(columns)
spew.Dump(rows)
return rows
}
func (q *SqlmockQuery) Returns(out interface{}) ExpectedQuery {
rows := q.getRowsForOutType(out)
q.query = q.query.WillReturnRows(rows)
return q
}
type SqlmockExec struct {
scope *Scope
exec *sqlmock.ExpectedExec
}
func (e *SqlmockExec) Returns(result driver.Result) ExpectedExec {
e.exec = e.exec.WillReturnResult(result)
return e
}