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package kernel
import (
"context"
"testing"
"github.com/containerd/log"
"gotest.tools/v3/assert"
is "gotest.tools/v3/assert/cmp"
)
func TestReadWriteKnobs(t *testing.T) {
for _, k := range []string{
"net.ipv4.neigh.default.gc_thresh1",
"net.ipv4.neigh.default.gc_thresh2",
"net.ipv4.neigh.default.gc_thresh3",
} {
// Check if the test is able to read the value
v, err := readSystemProperty(k)
if err != nil {
log.G(context.TODO()).WithError(err).Warnf("Path %v not readable", k)
// the path is not there, skip this key
continue
}
// Test the write
assert.Check(t, writeSystemProperty(k, "10000"))
newV, err := readSystemProperty(k)
assert.NilError(t, err)
assert.Check(t, is.Equal(newV, "10000"))
// Restore value
assert.Check(t, writeSystemProperty(k, v))
}
}
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