1 files changed, 35 insertions, 0 deletions
diff --git a/internal/rosa/builtins_test.go b/internal/rosa/builtins_test.go
new file mode 100644
index 00000000..e18ba461
--- /dev/null
+++ b/internal/rosa/builtins_test.go
@@ -0,0 +1,35 @@
+package rosa
+
+import (
+	"slices"
+	"strconv"
+	"strings"
+	"testing"
+)
+
+func TestSkipGNUTests(t *testing.T) {
+	t.Parallel()
+
+	testCases := []struct {
+		tests []int64
+		want  string
+	}{
+		{[]int64{764}, "1-763 765-"},
+		{[]int64{764, 0xcafe, 37, 9}, "1-8 10-36 38-763 765-51965 51967-"},
+		{[]int64{1, 2, 0xbed}, "3-3052 3054-"},
+		{[]int64{3, 4}, "1-2 5-"},
+	}
+	for _, tc := range testCases {
+		t.Run(strings.Join(slices.Collect(func(yield func(string) bool) {
+			for _, n := range tc.tests {
+				yield(strconv.Itoa(int(n)))
+			}
+		}), ","), func(t *testing.T) {
+			t.Parallel()
+
+			if got := skipGNUTests(tc.tests...); got != tc.want {
+				t.Errorf("skipGNUTests: %q, want %q", got, tc.want)
+			}
+		})
+	}
+}