pull deps in for optimization, maybe slice back out later

overlay/virtqueue/size_test.go

@@ -0,0 +1,59 @@
+package virtqueue
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestCheckQueueSize(t *testing.T) {
+	tests := []struct {
+		name        string
+		queueSize   int
+		containsErr string
+	}{
+		{
+			name:        "negative",
+			queueSize:   -1,
+			containsErr: "too small",
+		},
+		{
+			name:        "zero",
+			queueSize:   0,
+			containsErr: "too small",
+		},
+		{
+			name:        "not a power of 2",
+			queueSize:   24,
+			containsErr: "not a power of 2",
+		},
+		{
+			name:        "too large",
+			queueSize:   65536,
+			containsErr: "larger than the maximum",
+		},
+		{
+			name:      "valid 1",
+			queueSize: 1,
+		},
+		{
+			name:      "valid 256",
+			queueSize: 256,
+		},
+
+		{
+			name:      "valid 32768",
+			queueSize: 32768,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := CheckQueueSize(tt.queueSize)
+			if tt.containsErr != "" {
+				assert.ErrorContains(t, err, tt.containsErr)
+			} else {
+				assert.NoError(t, err)
+			}
+		})
+	}
+}