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// Copyright 2014 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package api
import (
"testing"
"time"
info "github.com/google/cadvisor/info/v1"
"github.com/stretchr/testify/assert"
"k8s.io/klog/v2"
)
func init() {
klog.InitFlags(nil)
}
// Checks that expected and actual are within delta of each other.
func inDelta(t *testing.T, expected, actual, delta uint64, description string) {
var diff uint64
if expected > actual {
diff = expected - actual
} else {
diff = actual - expected
}
if diff > delta {
t.Errorf("%s (%d and %d) are not within %d of each other", description, expected, actual, delta)
}
}
// Checks that CPU stats are valid.
func checkCPUStats(t *testing.T, stat info.CpuStats) {
assert := assert.New(t)
assert.NotEqual(0, stat.Usage.Total, "Total CPU usage should not be zero")
assert.NotEmpty(stat.Usage.PerCpu, "Per-core usage should not be empty")
totalUsage := uint64(0)
for _, usage := range stat.Usage.PerCpu {
totalUsage += usage
}
inDelta(t, stat.Usage.Total, totalUsage, uint64((5 * time.Millisecond).Nanoseconds()), "Per-core CPU usage")
inDelta(t, stat.Usage.Total, stat.Usage.User+stat.Usage.System, uint64((500 * time.Millisecond).Nanoseconds()), "User + system CPU usage")
// TODO(rjnagal): Add verification for cpu load.
}
func checkMemoryStats(t *testing.T, stat info.MemoryStats) {
assert := assert.New(t)
assert.NotEqual(0, stat.Usage, "Memory usage should not be zero")
assert.NotEqual(0, stat.WorkingSet, "Memory working set should not be zero")
if stat.WorkingSet > stat.Usage {
t.Errorf("Memory working set (%d) should be at most equal to memory usage (%d)", stat.WorkingSet, stat.Usage)
}
// TODO(vmarmol): Add checks for ContainerData and HierarchicalData
}
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