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-rw-r--r--test/func5.go91
1 files changed, 91 insertions, 0 deletions
diff --git a/test/func5.go b/test/func5.go
new file mode 100644
index 0000000..2e058be
--- /dev/null
+++ b/test/func5.go
@@ -0,0 +1,91 @@
+// run
+
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Test functions and goroutines.
+
+package main
+
+func caller(f func(int, int) int, a, b int, c chan int) {
+ c <- f(a, b)
+}
+
+func gocall(f func(int, int) int, a, b int) int {
+ c := make(chan int)
+ go caller(f, a, b, c)
+ return <-c
+}
+
+func call(f func(int, int) int, a, b int) int {
+ return f(a, b)
+}
+
+func call1(f func(int, int) int, a, b int) int {
+ return call(f, a, b)
+}
+
+var f func(int, int) int
+
+func add(x, y int) int {
+ return x + y
+}
+
+func fn() func(int, int) int {
+ return f
+}
+
+var fc func(int, int, chan int)
+
+func addc(x, y int, c chan int) {
+ c <- x+y
+}
+
+func fnc() func(int, int, chan int) {
+ return fc
+}
+
+func three(x int) {
+ if x != 3 {
+ println("wrong val", x)
+ panic("fail")
+ }
+}
+
+var notmain func()
+
+func emptyresults() {}
+func noresults() {}
+
+var nothing func()
+
+func main() {
+ three(call(add, 1, 2))
+ three(call1(add, 1, 2))
+ f = add
+ three(call(f, 1, 2))
+ three(call1(f, 1, 2))
+ three(call(fn(), 1, 2))
+ three(call1(fn(), 1, 2))
+ three(call(func(a, b int) int { return a + b }, 1, 2))
+ three(call1(func(a, b int) int { return a + b }, 1, 2))
+
+ fc = addc
+ c := make(chan int)
+ go addc(1, 2, c)
+ three(<-c)
+ go fc(1, 2, c)
+ three(<-c)
+ go fnc()(1, 2, c)
+ three(<-c)
+ go func(a, b int, c chan int) { c <- a+b }(1, 2, c)
+ three(<-c)
+
+ emptyresults()
+ noresults()
+ nothing = emptyresults
+ nothing()
+ nothing = noresults
+ nothing()
+}