func (r *result) buildQuery(col db.Collection) (db.Result, error) {
var res db.Result
if r.args.where == nil {
res = col.Find(db.Cond{})
} else {
res = col.Find((*r.args.where)...)
}
if r.args.limit != nil {
res = res.Limit(*r.args.limit)
}
if r.args.skip != nil {
res = res.Skip(*r.args.skip)
}
if r.args.sort != nil {
res = res.Sort((*r.args.sort)...)
}
if r.args.fields != nil {
res = res.Select((*r.args.fields)...)
}
if r.args.group != nil {
res = res.Group((*r.args.group)...)
}
return res, nil
}
func TestFibonacci(t *testing.T) {
var err error
var res db.Result
var total uint64
for _, wrapper := range wrappers {
if settings[wrapper] == nil {
t.Fatalf(`No such settings entry for wrapper %s.`, wrapper)
} else {
var sess db.Database
sess, err = db.Open(wrapper, *settings[wrapper])
if err != nil {
t.Fatalf(`Test for wrapper %s failed: %q`, wrapper, err)
}
defer sess.Close()
var col db.Collection
col, err = sess.Collection("fibonacci")
if err != nil {
if wrapper == `mongo` && err == db.ErrCollectionDoesNotExist {
// Expected error with mongodb.
} else {
t.Fatalf(`Could not use collection with wrapper %s: %q`, wrapper, err)
}
}
// Adding some items.
var i uint64
for i = 0; i < 10; i++ {
item := fibonacci{Input: i, Output: fib(i)}
_, err = col.Append(item)
if err != nil {
t.Fatalf(`Could not append item with wrapper %s: %q`, wrapper, err)
}
}
// Testing sorting by function.
res = col.Find(
// 5, 6, 7, 3
db.Or{
db.And{
db.Cond{"input >=": 5},
db.Cond{"input <=": 7},
},
db.Cond{"input": 3},
},
)
// Testing sort by function.
switch wrapper {
case `postgresql`:
res = res.Sort(db.Raw{`RANDOM()`})
case `sqlite`:
res = res.Sort(db.Raw{`RANDOM()`})
case `mysql`:
res = res.Sort(db.Raw{`RAND()`})
}
total, err = res.Count()
if err != nil {
t.Fatalf(`%s: %q`, wrapper, err)
}
if total != 4 {
t.Fatalf("%s: Expecting a count of 4, got %d.", wrapper, total)
}
// Find() with IN/$in
var whereIn db.Cond
switch wrapper {
case `mongo`:
whereIn = db.Cond{"input": db.Func{"$in", []int{3, 5, 6, 7}}}
default:
whereIn = db.Cond{"input": db.Func{"IN", []int{3, 5, 6, 7}}}
}
res = col.Find(whereIn).Sort("input")
total, err = res.Count()
if err != nil {
t.Fatalf(`%s: %q`, wrapper, err)
}
if total != 4 {
t.Fatalf(`Expecting a count of 4.`)
}
res = res.Skip(1).Limit(2)
for {
var item fibonacci
err = res.Next(&item)
if err == nil {
switch item.Input {
case 5:
case 6:
if fib(item.Input) != item.Output {
t.Fatalf(`Unexpected value in item with wrapper %s.`, wrapper)
}
default:
t.Fatalf(`Unexpected item: %v with wrapper %s.`, item, wrapper)
}
} else if err == db.ErrNoMoreRows {
break
} else {
t.Fatalf(`%s: %q`, wrapper, err)
}
}
// Find() with range
res = col.Find(
// 5, 6, 7, 3
db.Or{
db.And{
db.Cond{"input >=": 5},
db.Cond{"input <=": 7},
},
db.Cond{"input": 3},
},
).Sort("-input")
if total, err = res.Count(); err != nil {
t.Fatalf(`%s: %q`, wrapper, err)
}
if total != 4 {
t.Fatalf(`Expecting a count of 4.`)
}
// Skipping.
res = res.Skip(1).Limit(2)
for {
var item fibonacci
err = res.Next(&item)
if err == nil {
switch item.Input {
case 5:
case 6:
if fib(item.Input) != item.Output {
t.Fatalf(`Unexpected value in item with wrapper %s.`, wrapper)
}
default:
t.Fatalf(`Unexpected item: %v with wrapper %s.`, item, wrapper)
}
} else if err == db.ErrNoMoreRows {
break
} else {
t.Fatalf(`%s: %q`, wrapper, err)
}
}
if err = res.Remove(); err != nil {
t.Fatalf(`%s: %q`, wrapper, err)
}
if total, err = res.Count(); err != nil {
t.Fatalf(`%s: %q`, wrapper, err)
}
if total != 0 {
t.Fatalf(`%s: Unexpected count %d.`, wrapper, total)
}
res = col.Find()
total, err = res.Count()
if total != 6 {
t.Fatalf(`%s: Unexpected count %d.`, wrapper, total)
}
var items []fibonacci
err = res.All(&items)
if err != nil {
t.Fatalf(`%s: %q`, wrapper, err)
}
for _, item := range items {
switch item.Input {
case 0:
case 1:
case 2:
case 4:
case 8:
case 9:
if fib(item.Input) != item.Output {
t.Fatalf(`Unexpected value in item with wrapper %s.`, wrapper)
}
default:
t.Fatalf(`Unexpected item: %v with wrapper %s.`, item, wrapper)
}
}
err = res.Close()
if err != nil {
t.Errorf("Failed to close result %s: %q.", wrapper, err)
}
err = sess.Close()
if err != nil {
t.Errorf("Failed to close %s: %q.", wrapper, err)
}
}
}
}