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diff --git a/Test/triggers/set-construction-is-a-good-trigger.dfy b/Test/triggers/set-construction-is-a-good-trigger.dfy
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index 00000000..b3dee172
--- /dev/null
+++ b/Test/triggers/set-construction-is-a-good-trigger.dfy
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+// RUN: %dafny /compile:0 /print:"%t.print" /dprint:"%t.dprint" /autoTriggers:1 /printTooltips "%s" > "%t"
+// RUN: %diff "%s.expect" "%t"
+
+// This file ensures that display expressions can be picked as triggers. This is
+// useful for code that checks if a set, sequence, or multiset is a singleton.
+
+method M(s: seq<int>, st: set<int>, mst: multiset<int>)
+  requires exists y :: s == [y]           // Seq#Build(Seq#Empty(): Seq Box, $Box(y#3))
+  requires exists y :: st == {y}          // Set#UnionOne(Set#Empty(): Set Box, $Box(y#4))
+  requires exists y :: mst == multiset{y} // MultiSet#UnionOne(MultiSet#Empty(): MultiSet Box, $Box(y#5))
+{
+}