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// 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 h2() (i interface{}, ok bool) {
ch := make(chan string, 1)
ch <- "hi"
i, ok = <-ch // 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)
}
i, ok = h2()
if !ok || i.(string) != "hi" {
panic(i)
}
}
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