230 lines
7.7 KiB
Go
230 lines
7.7 KiB
Go
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// Copyright 2017 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package profiler
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import (
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"bytes"
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"testing"
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"cloud.google.com/go/internal/testutil"
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"github.com/google/go-cmp/cmp/cmpopts"
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"github.com/google/pprof/profile"
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)
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type fakeFunc struct {
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name string
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file string
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lineno int
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}
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func (f *fakeFunc) Name() string {
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return f.name
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}
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func (f *fakeFunc) FileLine(_ uintptr) (string, int) {
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return f.file, f.lineno
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}
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var cmpOpt = cmpopts.IgnoreUnexported(profile.Profile{}, profile.Function{},
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profile.Line{}, profile.Location{}, profile.Sample{}, profile.ValueType{})
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// TestRuntimeFunctionTrimming tests if symbolize trims runtime functions as intended.
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func TestRuntimeFunctionTrimming(t *testing.T) {
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fakeFuncMap := map[uintptr]*fakeFunc{
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0x10: &fakeFunc{"runtime.goexit", "runtime.go", 10},
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0x20: &fakeFunc{"runtime.other", "runtime.go", 20},
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0x30: &fakeFunc{"foo", "foo.go", 30},
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0x40: &fakeFunc{"bar", "bar.go", 40},
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}
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backupFuncForPC := funcForPC
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funcForPC = func(pc uintptr) function {
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return fakeFuncMap[pc]
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}
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defer func() {
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funcForPC = backupFuncForPC
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}()
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testLoc := []*profile.Location{
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{ID: 1, Address: 0x10},
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{ID: 2, Address: 0x20},
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{ID: 3, Address: 0x30},
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{ID: 4, Address: 0x40},
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}
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testProfile := &profile.Profile{
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Sample: []*profile.Sample{
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{Location: []*profile.Location{testLoc[0], testLoc[1], testLoc[3], testLoc[2]}},
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{Location: []*profile.Location{testLoc[1], testLoc[3], testLoc[2]}},
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{Location: []*profile.Location{testLoc[3], testLoc[2], testLoc[1]}},
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{Location: []*profile.Location{testLoc[3], testLoc[2], testLoc[0]}},
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{Location: []*profile.Location{testLoc[0], testLoc[1], testLoc[3], testLoc[0]}},
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{Location: []*profile.Location{testLoc[1], testLoc[0]}},
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},
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Location: testLoc,
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}
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testProfiles := make([]*profile.Profile, 2)
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testProfiles[0] = testProfile.Copy()
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testProfiles[1] = testProfile.Copy()
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// Test case for CPU profile.
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testProfiles[0].PeriodType = &profile.ValueType{Type: "cpu", Unit: "nanoseconds"}
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// Test case for heap profile.
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testProfiles[1].PeriodType = &profile.ValueType{Type: "space", Unit: "bytes"}
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wantFunc := []*profile.Function{
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{ID: 1, Name: "runtime.goexit", SystemName: "runtime.goexit", Filename: "runtime.go"},
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{ID: 2, Name: "runtime.other", SystemName: "runtime.other", Filename: "runtime.go"},
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{ID: 3, Name: "foo", SystemName: "foo", Filename: "foo.go"},
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{ID: 4, Name: "bar", SystemName: "bar", Filename: "bar.go"},
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}
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wantLoc := []*profile.Location{
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{ID: 1, Address: 0x10, Line: []profile.Line{{Function: wantFunc[0], Line: 10}}},
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{ID: 2, Address: 0x20, Line: []profile.Line{{Function: wantFunc[1], Line: 20}}},
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{ID: 3, Address: 0x30, Line: []profile.Line{{Function: wantFunc[2], Line: 30}}},
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{ID: 4, Address: 0x40, Line: []profile.Line{{Function: wantFunc[3], Line: 40}}},
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}
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wantProfiles := []*profile.Profile{
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{
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PeriodType: &profile.ValueType{Type: "cpu", Unit: "nanoseconds"},
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Sample: []*profile.Sample{
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{Location: []*profile.Location{wantLoc[1], wantLoc[3], wantLoc[2]}},
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{Location: []*profile.Location{wantLoc[1], wantLoc[3], wantLoc[2]}},
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{Location: []*profile.Location{wantLoc[3], wantLoc[2], wantLoc[1]}},
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{Location: []*profile.Location{wantLoc[3], wantLoc[2]}},
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{Location: []*profile.Location{wantLoc[1], wantLoc[3]}},
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{Location: []*profile.Location{wantLoc[1]}},
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},
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Location: wantLoc,
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Function: wantFunc,
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},
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{
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PeriodType: &profile.ValueType{Type: "space", Unit: "bytes"},
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Sample: []*profile.Sample{
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{Location: []*profile.Location{wantLoc[3], wantLoc[2]}},
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{Location: []*profile.Location{wantLoc[3], wantLoc[2]}},
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{Location: []*profile.Location{wantLoc[3], wantLoc[2], wantLoc[1]}},
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{Location: []*profile.Location{wantLoc[3], wantLoc[2]}},
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{Location: []*profile.Location{wantLoc[3]}},
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{Location: []*profile.Location{wantLoc[0]}},
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},
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Location: wantLoc,
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Function: wantFunc,
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},
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}
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for i := 0; i < 2; i++ {
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symbolize(testProfiles[i])
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if !testutil.Equal(testProfiles[i], wantProfiles[i], cmpOpt) {
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t.Errorf("incorrect trimming (testcase = %d): got {%v}, want {%v}", i, testProfiles[i], wantProfiles[i])
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}
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}
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}
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// TestParseAndSymbolize tests if parseAndSymbolize parses and symbolizes
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// profiles as intended.
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func TestParseAndSymbolize(t *testing.T) {
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fakeFuncMap := map[uintptr]*fakeFunc{
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0x10: &fakeFunc{"foo", "foo.go", 10},
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0x20: &fakeFunc{"bar", "bar.go", 20},
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}
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backupFuncForPC := funcForPC
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funcForPC = func(pc uintptr) function {
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return fakeFuncMap[pc]
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}
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defer func() {
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funcForPC = backupFuncForPC
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}()
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testLoc := []*profile.Location{
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{ID: 1, Address: 0x10},
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{ID: 2, Address: 0x20},
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}
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testProfile := &profile.Profile{
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SampleType: []*profile.ValueType{
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&profile.ValueType{Type: "cpu", Unit: "nanoseconds"},
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},
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PeriodType: &profile.ValueType{Type: "cpu", Unit: "nanoseconds"},
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Sample: []*profile.Sample{
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{Location: []*profile.Location{testLoc[0], testLoc[1]}, Value: []int64{1}},
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{Location: []*profile.Location{testLoc[1]}, Value: []int64{1}},
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},
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Location: testLoc,
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}
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testProfiles := make([]*profile.Profile, 2)
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testProfiles[0] = testProfile.Copy()
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testProfiles[1] = testProfile.Copy()
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wantFunc := []*profile.Function{
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{ID: 1, Name: "foo", SystemName: "foo", Filename: "foo.go"},
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{ID: 2, Name: "bar", SystemName: "bar", Filename: "bar.go"},
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}
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wantLoc := []*profile.Location{
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{ID: 1, Address: 0x10, Line: []profile.Line{{Function: wantFunc[0], Line: 10}}},
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{ID: 2, Address: 0x20, Line: []profile.Line{{Function: wantFunc[1], Line: 20}}},
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}
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wantProfile := &profile.Profile{
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SampleType: []*profile.ValueType{
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&profile.ValueType{Type: "cpu", Unit: "nanoseconds"},
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},
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PeriodType: &profile.ValueType{Type: "cpu", Unit: "nanoseconds"},
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Sample: []*profile.Sample{
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{Location: []*profile.Location{wantLoc[0], wantLoc[1]}, Value: []int64{1}},
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{Location: []*profile.Location{wantLoc[1]}, Value: []int64{1}},
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},
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Location: wantLoc,
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Function: wantFunc,
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}
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// Profile already symbolized.
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testProfiles[1].Location = []*profile.Location{
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{ID: 1, Address: 0x10, Line: []profile.Line{{Function: wantFunc[0], Line: 10}}},
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{ID: 2, Address: 0x20, Line: []profile.Line{{Function: wantFunc[1], Line: 20}}},
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}
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testProfiles[1].Function = []*profile.Function{
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{ID: 1, Name: "foo", SystemName: "foo", Filename: "foo.go"},
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{ID: 2, Name: "bar", SystemName: "bar", Filename: "bar.go"},
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}
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for i := 0; i < 2; i++ {
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var prof bytes.Buffer
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testProfiles[i].Write(&prof)
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parseAndSymbolize(&prof)
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gotProfile, err := profile.ParseData(prof.Bytes())
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if err != nil {
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t.Errorf("parsing symbolized profile (testcase = %d) got err: %v, want no error", i, err)
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}
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if !testutil.Equal(gotProfile, wantProfile, cmpOpt) {
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t.Errorf("incorrect symbolization (testcase = %d): got {%v}, want {%v}", i, gotProfile, wantProfile)
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}
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}
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}
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func TestIsSymbolizedGoVersion(t *testing.T) {
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for _, tc := range []struct {
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input string
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want bool
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}{
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{"go1.9beta2", true},
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{"go1.9", true},
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{"go1.9.1", true},
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{"go1.10", true},
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{"go1.10.1", true},
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{"go2.0", true},
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{"go3.1", true},
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{"go1.8", false},
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{"go1.8.1", false},
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{"go1.7", false},
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{"devel ", false},
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} {
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if got := isSymbolizedGoVersion(tc.input); got != tc.want {
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t.Errorf("isSymbolizedGoVersion(%v) got %v, want %v", tc.input, got, tc.want)
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}
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}
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}
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