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-rw-r--r--test/ken/interfun.go59
1 files changed, 59 insertions, 0 deletions
diff --git a/test/ken/interfun.go b/test/ken/interfun.go
new file mode 100644
index 0000000..9432181
--- /dev/null
+++ b/test/ken/interfun.go
@@ -0,0 +1,59 @@
+// 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 interfaces and methods.
+
+package main
+
+type S struct {
+ a,b int;
+}
+
+type I1 interface {
+ f ()int;
+}
+
+type I2 interface {
+ g() int;
+ f() int;
+}
+
+func (this *S) f()int {
+ return this.a;
+}
+
+func (this *S) g()int {
+ return this.b;
+}
+
+func
+main() {
+ var i1 I1;
+ var i2 I2;
+ var g *S;
+
+ s := new(S);
+ s.a = 5;
+ s.b = 6;
+
+ // call structure
+ if s.f() != 5 { panic(11); }
+ if s.g() != 6 { panic(12); }
+
+ i1 = s; // convert S to I1
+ i2 = i1.(I2); // convert I1 to I2
+
+ // call interface
+ if i1.f() != 5 { panic(21); }
+ if i2.f() != 5 { panic(22); }
+ if i2.g() != 6 { panic(23); }
+
+ g = i1.(*S); // convert I1 to S
+ if g != s { panic(31); }
+
+ g = i2.(*S); // convert I2 to S
+ if g != s { panic(32); }
+}