schedstat_test.go

Documentation: github.com/prometheus/procfs

     1  // Copyright 2019 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  	"testing"
    18  )
    19  
    20  func TestSchedstat(t *testing.T) {
    21  	stats, err := getProcFixtures(t).Schedstat()
    22  	if err != nil {
    23  		t.Fatal(err)
    24  	}
    25  
    26  	if len(stats.CPUs) != 2 {
    27  		t.Errorf("expected 2 CPUs, got %v", len(stats.CPUs))
    28  	}
    29  
    30  	var cpu *SchedstatCPU
    31  	for _, cpu = range stats.CPUs {
    32  		if cpu.CPUNum == "0" {
    33  			break
    34  		}
    35  	}
    36  
    37  	if cpu == nil || cpu.CPUNum != "0" {
    38  		t.Error("could not find cpu0")
    39  	}
    40  
    41  	if want, have := uint64(2045936778163039), cpu.RunningNanoseconds; want != have {
    42  		t.Errorf("want RunningNanoseconds %v, have %v", want, have)
    43  	}
    44  
    45  	if want, have := uint64(343796328169361), cpu.WaitingNanoseconds; want != have {
    46  		t.Errorf("want WaitingNanoseconds %v, have %v", want, have)
    47  	}
    48  
    49  	if want, have := uint64(4767485306), cpu.RunTimeslices; want != have {
    50  		t.Errorf("want RunTimeslices %v, have %v", want, have)
    51  	}
    52  }
    53  
    54  func TestProcSchedstat(t *testing.T) {
    55  	p1, err := getProcFixtures(t).Proc(26231)
    56  	if err != nil {
    57  		t.Fatal(err)
    58  	}
    59  
    60  	schedstat, err := p1.Schedstat()
    61  	if err != nil {
    62  		t.Fatal(err)
    63  	}
    64  
    65  	if want, have := uint64(411605849), schedstat.RunningNanoseconds; want != have {
    66  		t.Errorf("want RunningNanoseconds %v, have %v", want, have)
    67  	}
    68  
    69  	if want, have := uint64(93680043), schedstat.WaitingNanoseconds; want != have {
    70  		t.Errorf("want WaitingNanoseconds %v, have %v", want, have)
    71  	}
    72  
    73  	if want, have := uint64(79), schedstat.RunTimeslices; want != have {
    74  		t.Errorf("want RunTimeslices %v, have %v", want, have)
    75  	}
    76  }
    77  
    78  func TestProcSchedstatErrors(t *testing.T) {
    79  	p1, err := getProcFixtures(t).Proc(26232)
    80  	if err != nil {
    81  		t.Fatal(err)
    82  	}
    83  
    84  	_, err = p1.Schedstat()
    85  	if err == nil {
    86  		t.Error("proc 26232 doesn't have schedstat -- should have gotten an error")
    87  	}
    88  
    89  	p2, err := getProcFixtures(t).Proc(26233)
    90  	if err != nil {
    91  		t.Fatal(err)
    92  	}
    93  
    94  	_, err = p2.Schedstat()
    95  	if err == nil {
    96  		t.Error("proc 26233 has malformed schedstat -- should have gotten an error")
    97  	}
    98  }
    99  
   100  // schedstat can have a 2nd line: it should be ignored.
   101  func TestProcSchedstatMultipleLines(t *testing.T) {
   102  	schedstat, err := parseProcSchedstat("123 456 789\n10 11\n")
   103  	if err != nil {
   104  		t.Fatal(err)
   105  	}
   106  	if want, have := uint64(123), schedstat.RunningNanoseconds; want != have {
   107  		t.Errorf("want RunningNanoseconds %v, have %v", want, have)
   108  	}
   109  	if want, have := uint64(456), schedstat.WaitingNanoseconds; want != have {
   110  		t.Errorf("want WaitingNanoseconds %v, have %v", want, have)
   111  	}
   112  	if want, have := uint64(789), schedstat.RunTimeslices; want != have {
   113  		t.Errorf("want RunTimeslices %v, have %v", want, have)
   114  	}
   115  }
   116  
   117  func TestProcSchedstatUnparsableInt(t *testing.T) {
   118  	if _, err := parseProcSchedstat("abc 456 789\n"); err == nil {
   119  		t.Error("schedstat should have been unparsable\n")
   120  	}
   121  
   122  	if _, err := parseProcSchedstat("123 abc 789\n"); err == nil {
   123  		t.Error("schedstat should have been unparsable\n")
   124  	}
   125  
   126  	if _, err := parseProcSchedstat("123 456 abc\n"); err == nil {
   127  		t.Error("schedstat should have been unparsable\n")
   128  	}
   129  }
   130
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