diff --git a/testdata/ffmpeg.d/cmd/prune/main_test.go b/testdata/ffmpeg.d/cmd/prune/main_test.go
new file mode 100644
index 0000000..911696f
--- /dev/null
+++ b/testdata/ffmpeg.d/cmd/prune/main_test.go
@@ -0,0 +1,12 @@
+package main
+
+import (
+	"context"
+	"testing"
+)
+
+func TestRun(t *testing.T) {
+	if err := Run(context.Background(), []string{}); err != nil {
+		t.Fatal(err)
+	}
+}
diff --git a/testdata/ffmpeg.d/cmd/prune/testdata/a.jpg b/testdata/ffmpeg.d/cmd/prune/testdata/a.jpg
new file mode 100755
index 0000000..72b2424
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diff --git a/testdata/ffmpeg.d/cmd/prune/testdata/b.jpg b/testdata/ffmpeg.d/cmd/prune/testdata/b.jpg
new file mode 100755
index 0000000..d093907
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