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// Copyright 2020 The gVisor Authors.
//
// 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 tools
import (
"testing"
)
// TestMeminfo checks the Meminfo parser on sample output.
func TestMeminfo(t *testing.T) {
sampleData := `
MemTotal: 16337408 kB
MemFree: 3742696 kB
MemAvailable: 9319948 kB
Buffers: 1433884 kB
Cached: 4607036 kB
SwapCached: 45284 kB
Active: 8288376 kB
Inactive: 2685928 kB
Active(anon): 4724912 kB
Inactive(anon): 1047940 kB
Active(file): 3563464 kB
Inactive(file): 1637988 kB
Unevictable: 326940 kB
Mlocked: 48 kB
SwapTotal: 33292284 kB
SwapFree: 32865736 kB
Dirty: 708 kB
Writeback: 0 kB
AnonPages: 4304204 kB
Mapped: 975424 kB
Shmem: 910292 kB
KReclaimable: 744532 kB
Slab: 1058448 kB
SReclaimable: 744532 kB
SUnreclaim: 313916 kB
KernelStack: 25188 kB
PageTables: 65300 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 41460988 kB
Committed_AS: 22859492 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 63088 kB
VmallocChunk: 0 kB
Percpu: 9248 kB
HardwareCorrupted: 0 kB
AnonHugePages: 786432 kB
ShmemHugePages: 0 kB
ShmemPmdMapped: 0 kB
FileHugePages: 0 kB
FilePmdMapped: 0 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
Hugetlb: 0 kB
DirectMap4k: 5408532 kB
DirectMap2M: 11241472 kB
DirectMap1G: 1048576 kB
`
want := 9319948.0
got, err := parseMemAvailable(sampleData)
if err != nil {
t.Fatalf("parseMemAvailable failed: %v", err)
}
if got != want {
t.Fatalf("parseMemAvailable got %f, want %f", got, want)
}
}
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