diff --git a/bin/cp/tests/cp_test.sh b/bin/cp/tests/cp_test.sh
--- a/bin/cp/tests/cp_test.sh
+++ b/bin/cp/tests/cp_test.sh
@@ -293,6 +293,35 @@
 	atf_check -o inline:'Symbolic Link\n' stat -f %SHT baz
 }
 
+atf_test_case hardlink
+hardlink_body()
+{
+	echo "foo" >foo
+	atf_check cp -l foo bar
+	atf_check -o inline:"foo\n" cat bar
+	atf_check_equal "$(stat -f%d,%i foo)" "$(stat -f%d,%i bar)"
+}
+
+atf_test_case hardlink_exists
+hardlink_exists_body()
+{
+	echo "foo" >foo
+	echo "bar" >bar
+	atf_check -s not-exit:0 -e match:exists cp -l foo bar
+	atf_check -o inline:"bar\n" cat bar
+	atf_check_not_equal "$(stat -f%d,%i foo)" "$(stat -f%d,%i bar)"
+}
+
+atf_test_case hardlink_exists_force
+hardlink_exists_force_body()
+{
+	echo "foo" >foo
+	echo "bar" >bar
+	atf_check cp -fl foo bar
+	atf_check -o inline:"foo\n" cat bar
+	atf_check_equal "$(stat -f%d,%i foo)" "$(stat -f%d,%i bar)"
+}
+
 atf_init_test_cases()
 {
 	atf_add_test_case basic
@@ -311,4 +340,7 @@
 	atf_add_test_case sparse_to_dev
 	atf_add_test_case sparse_trailing_hole
 	atf_add_test_case standalone_Pflag
+	atf_add_test_case hardlink
+	atf_add_test_case hardlink_exists
+	atf_add_test_case hardlink_exists_force
 }