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-rw-r--r--test/interface/explicit.go41
1 files changed, 26 insertions, 15 deletions
diff --git a/test/interface/explicit.go b/test/interface/explicit.go
index bd1bd19a9..797cec80e 100644
--- a/test/interface/explicit.go
+++ b/test/interface/explicit.go
@@ -8,34 +8,45 @@
package main
-type T struct { a int }
+type T struct {
+ a int
+}
+
var t *T
-type I interface { M() }
+type I interface {
+ M()
+}
+
var i I
-type I2 interface { M(); N(); }
+type I2 interface {
+ M()
+ N()
+}
+
var i2 I2
-type E interface { }
+type E interface{}
+
var e E
func main() {
- e = t; // ok
- t = e; // ERROR "need explicit|need type assertion"
+ e = t // ok
+ t = e // ERROR "need explicit|need type assertion"
// neither of these can work,
// because i has an extra method
// that t does not, so i cannot contain a t.
- i = t; // ERROR "missing|incompatible|is not"
- t = i; // ERROR "missing|incompatible|is not"
+ i = t // ERROR "incompatible|missing M method"
+ t = i // ERROR "incompatible|need type assertion"
+
+ i = i2 // ok
+ i2 = i // ERROR "missing N method"
- i = i2; // ok
- i2 = i; // ERROR "need explicit|need type assertion"
-
- i = I(i2); // ok
- i2 = I2(i); // ERROR "need explicit|need type assertion"
+ i = I(i2) // ok
+ i2 = I2(i) // ERROR "missing N method"
- e = E(t); // ok
- t = T(e); // ERROR "need explicit|need type assertion|incompatible"
+ e = E(t) // ok
+ t = T(e) // ERROR "need explicit|need type assertion|incompatible"
}