Typed rows via manual assembly

result.go

@@ -1,14 +1,14 @@
 package sqlmock
 
 import (
-    "database/sql/driver"
+	"database/sql/driver"
 )
 
 // Result satisfies sql driver Result, which
 // holds last insert id and rows affected
 // by Exec queries
 type result struct {
-	insertID int64
+	insertID     int64
 	rowsAffected int64
 }
 

rows.go

@@ -40,6 +40,27 @@ func (r *rows) Next(dest []driver.Value) error {
 	return nil
 }
 
+func (r *rows) AddRow(values ...interface{}) {
+	if len(values) != len(r.cols) {
+		panic("Expected number of values to match number of columns")
+	}
+
+	row := make([]driver.Value, len(r.cols))
+	for i, v := range values {
+		row[i] = v
+	}
+
+	r.rows = append(r.rows, row)
+}
+
+// NewRows allows Rows to be created manually to use
+// any of the types sql/driver.Value supports
+func NewRows(columns []string) *rows {
+	rs := &rows{}
+	rs.cols = columns
+	return rs
+}
+
 // RowsFromCSVString creates Rows from CSV string
 // to be used for mocked queries. Returns sql driver Rows interface
 func RowsFromCSVString(columns []string, s string) driver.Rows {

sqlmock_test.go

@@ -4,6 +4,7 @@ import (
 	"database/sql"
 	"fmt"
 	"testing"
+	"time"
 )
 
 func TestMockQuery(t *testing.T) {
@@ -48,6 +49,57 @@ func TestMockQuery(t *testing.T) {
 	}
 }
 
+func TestMockQueryTypes(t *testing.T) {
+	db, err := sql.Open("mock", "")
+	if err != nil {
+		t.Errorf("an error '%s' was not expected when opening a stub database connection", err)
+	}
+
+	columns := []string{"id", "timestamp", "sold"}
+
+	timestamp := time.Now()
+	rs := NewRows(columns)
+	rs.AddRow(5, timestamp, true)
+
+	ExpectQuery("SELECT (.+) FROM sales WHERE id = ?").
+		WithArgs(5).
+		WillReturnRows(rs)
+
+	rows, err := db.Query("SELECT (.+) FROM sales WHERE id = ?", 5)
+	if err != nil {
+		t.Errorf("error '%s' was not expected while retrieving mock rows", err)
+	}
+	defer rows.Close()
+	if !rows.Next() {
+		t.Error("it must have had one row as result, but got empty result set instead")
+	}
+
+	var id int
+	var time time.Time
+	var sold bool
+
+	err = rows.Scan(&id, &time, &sold)
+	if err != nil {
+		t.Errorf("error '%s' was not expected while trying to scan row", err)
+	}
+
+	if id != 5 {
+		t.Errorf("expected mocked id to be 5, but got %d instead", id)
+	}
+
+	if time != timestamp {
+		t.Errorf("expected mocked time to be %s, but got '%s' instead", timestamp, time)
+	}
+
+	if sold != true {
+		t.Errorf("expected mocked boolean to be true, but got %v instead", sold)
+	}
+
+	if err = db.Close(); err != nil {
+		t.Errorf("error '%s' was not expected while closing the database", err)
+	}
+}
+
 func TestTransactionExpectations(t *testing.T) {
 	db, err := sql.Open("mock", "")
 	if err != nil {