1 files changed, 52 insertions, 0 deletions
diff --git a/test/typeparam/listimp.dir/main.go b/test/typeparam/listimp.dir/main.go
new file mode 100644
index 0000000000..985ff59a18
--- /dev/null
+++ b/test/typeparam/listimp.dir/main.go
@@ -0,0 +1,52 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import (
+	"a"
+	"fmt"
+)
+
+func main() {
+	i3 := &a.List[int]{nil, 1}
+	i2 := &a.List[int]{i3, 3}
+	i1 := &a.List[int]{i2, 2}
+	if got, want := i1.Largest(), 3; got != want {
+		panic(fmt.Sprintf("got %d, want %d", got, want))
+	}
+
+	b3 := &a.List[byte]{nil, byte(1)}
+	b2 := &a.List[byte]{b3, byte(3)}
+	b1 := &a.List[byte]{b2, byte(2)}
+	if got, want := b1.Largest(), byte(3); got != want {
+		panic(fmt.Sprintf("got %d, want %d", got, want))
+	}
+
+	f3 := &a.List[float64]{nil, 13.5}
+	f2 := &a.List[float64]{f3, 1.2}
+	f1 := &a.List[float64]{f2, 4.5}
+	if got, want := f1.Largest(), 13.5; got != want {
+		panic(fmt.Sprintf("got %f, want %f", got, want))
+	}
+
+	s3 := &a.List[string]{nil, "dd"}
+	s2 := &a.List[string]{s3, "aa"}
+	s1 := &a.List[string]{s2, "bb"}
+	if got, want := s1.Largest(), "dd"; got != want {
+		panic(fmt.Sprintf("got %s, want %s", got, want))
+	}
+	j3 := &a.ListNum[int]{nil, 1}
+	j2 := &a.ListNum[int]{j3, 32}
+	j1 := &a.ListNum[int]{j2, 2}
+	if got, want := j1.ClippedLargest(), 2; got != want {
+		panic(fmt.Sprintf("got %d, want %d", got, want))
+	}
+	g3 := &a.ListNum[float64]{nil, 13.5}
+	g2 := &a.ListNum[float64]{g3, 1.2}
+	g1 := &a.ListNum[float64]{g2, 4.5}
+	if got, want := g1.ClippedLargest(), 4.5; got != want {
+		panic(fmt.Sprintf("got %f, want %f", got, want))
+	}
+}