buddyinfo_test.go

Documentation: github.com/prometheus/procfs

     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  
    14  package procfs
    15  
    16  import (
    17  	"strings"
    18  	"testing"
    19  )
    20  
    21  func 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  
    44  func TestParseBuddyInfoShort(t *testing.T) {
    45  
    46  	testdata := `Node 0, zone
    47  Node 0, zone
    48  Node 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 := "Error Parsing File: Invalid number of fields, found: [Node 0, zone]", err.Error(); want != got {
    56  		t.Fatalf("Error Parsing File: Invalid number of fields, found: [Node %q, %q]", want, got)
    57  	}
    58  }
    59  
    60  func TestParseBuddyInfoSizeMismatch(t *testing.T) {
    61  
    62  	testdata := `Node 0, zone      DMA      1      0      1      0      2      1      1      0      1      1      3
    63  Node 0, zone    DMA32    759    572    791    475    194     45     12      0      0      0      0      0
    64  Node 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 := "Error Parsing File: mismatch in number of buddyinfo buckets, previous count 11, new count 12", err.Error(); !strings.HasPrefix(got, want) {
    72  		t.Fatalf("Error Parsing File: mismatch in number of buddyinfo buckets, previous count %q, new count %q", want, got)
    73  	}
    74  }
    75
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