move debug test into _testdata

cl/_testdata/debug/in.go

@@ -0,0 +1,35 @@
+package foo
+
+type IFoo interface {
+	Foo(a []int, b string) int
+}
+
+type Foo struct {
+	nexy *Foo
+	data map[string]uint64
+}
+
+func (Foo) Foo(a []int, b string) int {
+	return 1
+}
+
+func fn(a int, b float64) int {
+	return 1
+}
+
+func fn1(fn func(int, float64) int) {
+	fn(1, 1.0)
+}
+
+func fn2() {
+	fn1(fn)
+	ch := make(chan int)
+	go func() {
+		ch <- 1
+	}()
+	<-ch
+
+	f := Foo{}
+	var foo IFoo = f
+	foo.Foo(nil, "")
+}