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// Copyright 2018 Tobias Klauser
//
// 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 numcpus
import "testing"
func TestParseCPURange(t *testing.T) {
testCases := []struct {
cpus string
n int
}{
{"", 0},
{"0", 1},
{"0-1", 2},
{"0-7", 8},
{"1-7", 7},
{"1-15", 15},
{"0-3,7", 5},
{"0,2-4", 4},
{"0,2-4,7", 5},
{"0,2-4,7-15", 13},
}
for _, tc := range testCases {
n, err := parseCPURange(tc.cpus)
if err != nil {
t.Errorf("failed to parse CPU range: %v", err)
}
if n != tc.n {
t.Errorf("parseCPURange(%q) = %d, expected %d", tc.cpus, n, tc.n)
}
}
str := "invalid"
_, err := parseCPURange(str)
if err == nil {
t.Errorf("parseCPURange(%q) unexpectedly succeeded", str)
}
}
func TestGetFromCPUAffinity(t *testing.T) {
nAffinity, err := getFromCPUAffinity()
if err != nil {
t.Fatalf("getFromCPUAffinity: %v", err)
}
cpus := "online"
nSysfs, err := readCPURange(cpus)
if err != nil {
t.Fatalf("readCPURange(%q): %v", cpus, err)
}
if nAffinity != nSysfs {
t.Errorf("getFromCPUAffinity() = %d, readCPURange(%q) = %d, want the same return value", nAffinity, cpus, nSysfs)
}
}
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