DockerCLI/cli/command/container/stats_helpers_test.go

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package container
import (
"fmt"
"testing"
"github.com/docker/docker/api/types"
"gotest.tools/v3/assert"
)
func TestCalculateMemUsageUnixNoCache(t *testing.T) {
// Given
stats := types.MemoryStats{Usage: 500, Stats: map[string]uint64{"cache": 400}}
// When
result := calculateMemUsageUnixNoCache(stats)
// Then
assert.Assert(t, inDelta(100.0, result, 1e-6))
}
func TestCalculateMemPercentUnixNoCache(t *testing.T) {
// Given
someLimit := float64(100.0)
noLimit := float64(0.0)
used := float64(70.0)
// When and Then
t.Run("Limit is set", func(t *testing.T) {
result := calculateMemPercentUnixNoCache(someLimit, used)
assert.Assert(t, inDelta(70.0, result, 1e-6))
})
t.Run("No limit, no cgroup data", func(t *testing.T) {
result := calculateMemPercentUnixNoCache(noLimit, used)
assert.Assert(t, inDelta(0.0, result, 1e-6))
})
}
func inDelta(x, y, delta float64) func() (bool, string) {
return func() (bool, string) {
diff := x - y
if diff < -delta || diff > delta {
return false, fmt.Sprintf("%f != %f within %f", x, y, delta)
}
return true, ""
}
}