xgo/runtime/vm_objects_limit_test.go
Daniel e93f6f6325
limit max object allocations (#129)
- add object.NumObjects()
- add object allocation limit in VM
- delete objects.Break, objects.Continue, objects.ReturnValue
- add Script.SetMaxAllocs()
- update sandbox documentation
- add some tests
- remove duplicate values in compiled constants (fixes #96)
- option to limit the maximum number of objects in compiled bytecode constants
2019-03-06 17:20:05 -08:00

49 lines
1 KiB
Go

package runtime_test
import (
"testing"
"github.com/d5/tengo/objects"
)
func TestObjectsLimit(t *testing.T) {
testAllocsLimit(t, `5`, 0)
testAllocsLimit(t, `5 + 5`, 1)
testAllocsLimit(t, `a := [1, 2, 3]`, 1)
testAllocsLimit(t, `a := 1; b := 2; c := 3; d := [a, b, c]`, 1)
testAllocsLimit(t, `a := {foo: 1, bar: 2}`, 1)
testAllocsLimit(t, `a := 1; b := 2; c := {foo: a, bar: b}`, 1)
testAllocsLimit(t, `
f := func() {
return 5 + 5
}
a := f() + 5
`, 2)
testAllocsLimit(t, `
f := func() {
return 5 + 5
}
a := f()
`, 1)
testAllocsLimit(t, `
a := []
f := func() {
a = append(a, 5)
}
f()
f()
f()
`, 4)
}
func testAllocsLimit(t *testing.T, src string, limit int64) {
expectAllocsLimit(t, src, -1, objects.UndefinedValue) // no limit
expectAllocsLimit(t, src, limit, objects.UndefinedValue)
expectAllocsLimit(t, src, limit+1, objects.UndefinedValue)
if limit > 1 {
expectErrorAllocsLimit(t, src, limit-1, "allocation limit exceeded")
}
if limit > 2 {
expectErrorAllocsLimit(t, src, limit-2, "allocation limit exceeded")
}
}