1 files changed, 34 insertions, 0 deletions
diff --git a/gopls/internal/lsp/testdata/references/interfaces/interfaces.go b/gopls/internal/lsp/testdata/references/interfaces/interfaces.go
new file mode 100644
index 000000000..6661dcc5d
--- /dev/null
+++ b/gopls/internal/lsp/testdata/references/interfaces/interfaces.go
@@ -0,0 +1,34 @@
+package interfaces
+
+type first interface {
+	common() //@mark(firCommon, "common"),refs("common", firCommon, xCommon, zCommon)
+	firstMethod() //@mark(firMethod, "firstMethod"),refs("firstMethod", firMethod, xfMethod, zfMethod)
+}
+
+type second interface {
+	common() //@mark(secCommon, "common"),refs("common", secCommon, yCommon, zCommon)
+	secondMethod() //@mark(secMethod, "secondMethod"),refs("secondMethod", secMethod, ysMethod, zsMethod)
+}
+
+type s struct {}
+
+func (*s) common() {} //@mark(sCommon, "common"),refs("common", sCommon, xCommon, yCommon, zCommon)
+
+func (*s) firstMethod() {} //@mark(sfMethod, "firstMethod"),refs("firstMethod", sfMethod, xfMethod, zfMethod)
+
+func (*s) secondMethod() {} //@mark(ssMethod, "secondMethod"),refs("secondMethod", ssMethod, ysMethod, zsMethod)
+
+func main() {
+	var x first = &s{}
+	var y second = &s{}
+
+	x.common() //@mark(xCommon, "common"),refs("common", firCommon, xCommon, zCommon)
+	x.firstMethod() //@mark(xfMethod, "firstMethod"),refs("firstMethod", firMethod, xfMethod, zfMethod)
+	y.common() //@mark(yCommon, "common"),refs("common", secCommon, yCommon, zCommon)
+	y.secondMethod() //@mark(ysMethod, "secondMethod"),refs("secondMethod", secMethod, ysMethod, zsMethod)
+
+	var z *s = &s{}
+	z.firstMethod() //@mark(zfMethod, "firstMethod"),refs("firstMethod", sfMethod, xfMethod, zfMethod)
+	z.secondMethod() //@mark(zsMethod, "secondMethod"),refs("secondMethod", ssMethod, ysMethod, zsMethod)
+	z.common() //@mark(zCommon, "common"),refs("common", sCommon, xCommon, yCommon, zCommon)
+}