mirror of
https://github.com/golang/go
synced 2024-10-01 22:28:33 -06:00
65 lines
1.0 KiB
Go
65 lines
1.0 KiB
Go
// Tests of call chaining f(g()) when g has multiple return values (MRVs).
|
|
// See https://code.google.com/p/go/issues/detail?id=4573.
|
|
|
|
package main
|
|
|
|
func assert(actual, expected int) {
|
|
if actual != expected {
|
|
panic(actual)
|
|
}
|
|
}
|
|
|
|
func g() (int, int) {
|
|
return 5, 7
|
|
}
|
|
|
|
func g2() (float64, float64) {
|
|
return 5, 7
|
|
}
|
|
|
|
func f1v(x int, v ...int) {
|
|
assert(x, 5)
|
|
assert(v[0], 7)
|
|
}
|
|
|
|
func f2(x, y int) {
|
|
assert(x, 5)
|
|
assert(y, 7)
|
|
}
|
|
|
|
func f2v(x, y int, v ...int) {
|
|
assert(x, 5)
|
|
assert(y, 7)
|
|
assert(len(v), 0)
|
|
}
|
|
|
|
func complexArgs() (float64, float64) {
|
|
return 5, 7
|
|
}
|
|
|
|
func appendArgs() ([]string, string) {
|
|
return []string{"foo"}, "bar"
|
|
}
|
|
|
|
func h() (i interface{}, ok bool) {
|
|
m := map[int]string{1: "hi"}
|
|
i, ok = m[1] // string->interface{} conversion within multi-valued expression
|
|
return
|
|
}
|
|
|
|
func main() {
|
|
f1v(g())
|
|
f2(g())
|
|
f2v(g())
|
|
if c := complex(complexArgs()); c != 5+7i {
|
|
panic(c)
|
|
}
|
|
if s := append(appendArgs()); len(s) != 2 || s[0] != "foo" || s[1] != "bar" {
|
|
panic(s)
|
|
}
|
|
i, ok := h()
|
|
if !ok || i.(string) != "hi" {
|
|
panic(i)
|
|
}
|
|
}
|