1// Copyright 2017 The Prometheus Authors 2// Licensed under the Apache License, Version 2.0 (the "License"); 3// you may not use this file except in compliance with the License. 4// You may obtain a copy of the License at 5// 6// http://www.apache.org/licenses/LICENSE-2.0 7// 8// Unless required by applicable law or agreed to in writing, software 9// distributed under the License is distributed on an "AS IS" BASIS, 10// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 11// See the License for the specific language governing permissions and 12// limitations under the License. 13 14package procfs 15 16import ( 17 "strings" 18 "testing" 19) 20 21func TestBuddyInfo(t *testing.T) { 22 buddyInfo, err := getProcFixtures(t).BuddyInfo() 23 if err != nil { 24 t.Fatal(err) 25 } 26 27 if want, got := "DMA", buddyInfo[0].Zone; want != got { 28 t.Errorf("want Node 0, Zone %s, got %s", want, got) 29 } 30 31 if want, got := "Normal", buddyInfo[2].Zone; want != got { 32 t.Errorf("want Node 0, Zone %s, got %s", want, got) 33 } 34 35 if want, got := 4381.0, buddyInfo[2].Sizes[0]; want != got { 36 t.Errorf("want Node 0, Zone Normal %f, got %f", want, got) 37 } 38 39 if want, got := 572.0, buddyInfo[1].Sizes[1]; want != got { 40 t.Errorf("want Node 0, Zone DMA32 %f, got %f", want, got) 41 } 42} 43 44func TestParseBuddyInfoShort(t *testing.T) { 45 46 testdata := `Node 0, zone 47Node 0, zone 48Node 0, zone 49` 50 reader := strings.NewReader(testdata) 51 _, err := parseBuddyInfo(reader) 52 if err == nil { 53 t.Fatalf("expected error, but none occurred") 54 } 55 if want, got := "invalid number of fields when parsing buddyinfo", err.Error(); want != got { 56 t.Fatalf("wrong error returned, wanted %q, got %q", want, got) 57 } 58} 59 60func TestParseBuddyInfoSizeMismatch(t *testing.T) { 61 62 testdata := `Node 0, zone DMA 1 0 1 0 2 1 1 0 1 1 3 63Node 0, zone DMA32 759 572 791 475 194 45 12 0 0 0 0 0 64Node 0, zone Normal 4381 1093 185 1530 567 102 4 0 0 0 65` 66 reader := strings.NewReader(testdata) 67 _, err := parseBuddyInfo(reader) 68 if err == nil { 69 t.Fatalf("expected error, but none occurred") 70 } 71 if want, got := "mismatch in number of buddyinfo buckets", err.Error(); !strings.HasPrefix(got, want) { 72 t.Fatalf("wrong error returned, wanted prefix %q, got %q", want, got) 73 } 74} 75