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-rw-r--r--test/gleam/set_test.gleam14
1 files changed, 14 insertions, 0 deletions
diff --git a/test/gleam/set_test.gleam b/test/gleam/set_test.gleam
index 06af5dc..e9c24ca 100644
--- a/test/gleam/set_test.gleam
+++ b/test/gleam/set_test.gleam
@@ -107,3 +107,17 @@ pub fn difference_test() {
|> set.to_list
|> should.equal([1])
}
+
+pub fn is_subset_test() {
+ set.is_subset(set.from_list([1, 2, 3, 4]), set.from_list([2, 4]))
+ |> should.be_false()
+
+ set.is_subset(set.from_list([2, 4]), set.from_list([1, 2, 3, 4]))
+ |> should.be_true()
+
+ set.is_subset(set.from_list([1, 2, 3]), set.from_list([4, 5, 6]))
+ |> should.be_false()
+
+ set.is_subset(set.from_list([1, 2]), set.from_list([2, 3, 4]))
+ |> should.be_false()
+}