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sensors: test intermediate states ({,un}loading)
This patch tests the intermediate states that were introduced in the previous patches. Specifically, it tests whether ListTracingPolicies call observes loading/unloading states for the corresponding sensors. It does so by a TestDelayedSensor that implements the SensorIface interface. Signed-off-by: Kornilios Kourtis <kornilios@isovalent.com>
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// SPDX-License-Identifier: Apache-2.0 | ||
// Copyright Authors of Tetragon | ||
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package sensors | ||
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import ( | ||
"fmt" | ||
"testing" | ||
"time" | ||
) | ||
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// A sensor to test the intermediate policy states (loading / unloading) | ||
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func makeTestDelayedSensor(t *testing.T) *TestDelayedSensor { | ||
s := &TestDelayedSensor{ | ||
name: "test-delayed-sensor", | ||
loaded: false, | ||
ch: make(chan struct{}), | ||
} | ||
RegisterPolicyHandlerAtInit("dummy-policyhandler", &dummyHandler{s: s}) | ||
t.Cleanup(func() { | ||
delete(registeredPolicyHandlers, "dummy-policyhandler") | ||
}) | ||
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return s | ||
} | ||
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type TestDelayedSensor struct { | ||
name string | ||
loaded bool | ||
ch chan struct{} | ||
} | ||
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func (tds *TestDelayedSensor) GetName() string { | ||
return tds.name | ||
} | ||
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func (tds *TestDelayedSensor) IsLoaded() bool { | ||
return tds.loaded | ||
} | ||
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func (tds *TestDelayedSensor) Load(_ string) error { | ||
select { | ||
case <-tds.ch: | ||
case <-time.After(10 * time.Second): | ||
return fmt.Errorf("TestDelayedSensor/Load timeout when waiting for unblocking") | ||
} | ||
tds.loaded = true | ||
return nil | ||
} | ||
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func (tds *TestDelayedSensor) Unload() error { | ||
select { | ||
case <-tds.ch: | ||
case <-time.After(10 * time.Second): | ||
return fmt.Errorf("TestDelayedSensor/Unload timeout when waiting for unblocking") | ||
} | ||
tds.loaded = false | ||
return nil | ||
} | ||
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func (tds *TestDelayedSensor) Destroy() { | ||
tds.loaded = false | ||
} | ||
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func (tds *TestDelayedSensor) unblock(t *testing.T) { | ||
select { | ||
case tds.ch <- struct{}{}: | ||
default: | ||
t.Fatalf("unblocked failed: channel does not seem to be empty") | ||
} | ||
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} |
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