1 files changed, 37 insertions, 0 deletions
diff --git a/gopls/internal/lsp/testdata/implementation/implementation.go b/gopls/internal/lsp/testdata/implementation/implementation.go
new file mode 100644
index 000000000..4c1a22dd4
--- /dev/null
+++ b/gopls/internal/lsp/testdata/implementation/implementation.go
@@ -0,0 +1,37 @@
+package implementation
+
+import "golang.org/lsptests/implementation/other"
+
+type ImpP struct{} //@ImpP,implementations("ImpP", Laugher, OtherLaugher)
+
+func (*ImpP) Laugh() { //@mark(LaughP, "Laugh"),implementations("Laugh", Laugh, OtherLaugh)
+}
+
+type ImpS struct{} //@ImpS,implementations("ImpS", Laugher, OtherLaugher)
+
+func (ImpS) Laugh() { //@mark(LaughS, "Laugh"),implementations("Laugh", Laugh, OtherLaugh)
+}
+
+type Laugher interface { //@Laugher,implementations("Laugher", ImpP, OtherImpP, ImpS, OtherImpS, embedsImpP)
+	Laugh() //@Laugh,implementations("Laugh", LaughP, OtherLaughP, LaughS, OtherLaughS)
+}
+
+type Foo struct { //@implementations("Foo", Joker)
+	other.Foo
+}
+
+type Joker interface { //@Joker
+	Joke() //@Joke,implementations("Joke", ImpJoker)
+}
+
+type cryer int //@implementations("cryer", Cryer)
+
+func (cryer) Cry(other.CryType) {} //@mark(CryImpl, "Cry"),implementations("Cry", Cry)
+
+type Empty interface{} //@implementations("Empty")
+
+var _ interface{ Joke() } //@implementations("Joke", ImpJoker)
+
+type embedsImpP struct { //@embedsImpP
+	ImpP //@implementations("ImpP", Laugher, OtherLaugher)
+}