oracle: when 'implements' is invoked on a method, show related methods, not types.

Fixes #9972

Change-Id: I25b65a64dcc4d551be3db8566783a9d23d410a2e
Reviewed-on: https://go-review.googlesource.com/5860
Reviewed-by: David Crawshaw <crawshaw@golang.org>

1 files changed, 37 insertions, 0 deletions

diff --git a/oracle/testdata/src/main/implements-methods.golden b/oracle/testdata/src/main/implements-methods.golden
new file mode 100644
index 0000000..11ccaf4
--- /dev/null
+++ b/oracle/testdata/src/main/implements-methods.golden
@@ -0,0 +1,37 @@
+-------- @implements F.f --------
+abstract method func (F).f()
+	is implemented by method (*C).f
+	is implemented by method (D).f
+	is implemented by method (FG).f
+
+-------- @implements FG.f --------
+abstract method func (FG).f()
+	is implemented by method (*D).f
+	implements method (F).f
+
+-------- @implements FG.g --------
+abstract method func (FG).g() []int
+	is implemented by method (*D).g
+
+-------- @implements *C.f --------
+concrete method func (*C).f()
+	implements method (F).f
+
+-------- @implements D.f --------
+concrete method func (D).f()
+	implements method (F).f
+concrete method func (D).f()
+	implements method (FG).f
+
+-------- @implements *D.g --------
+concrete method func (*D).g() []int
+	implements method (FG).g
+
+-------- @implements Len --------
+concrete method func (sorter).Len() int
+	implements method (sort.Interface).Len
+
+-------- @implements I.Method --------
+abstract method func (I).Method(*int) *int
+	is implemented by method (lib.Type).Method
+