| // Copyright 2014 Google Inc. All Rights Reserved. |
| // |
| // 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 driver |
| |
| import ( |
| "fmt" |
| "io/ioutil" |
| "net/http" |
| "net/url" |
| "os" |
| "path/filepath" |
| "reflect" |
| "regexp" |
| "runtime" |
| "testing" |
| "time" |
| |
| "github.com/google/pprof/internal/plugin" |
| "github.com/google/pprof/internal/proftest" |
| "github.com/google/pprof/profile" |
| ) |
| |
| func TestSymbolizationPath(t *testing.T) { |
| if runtime.GOOS == "windows" { |
| t.Skip("test assumes Unix paths") |
| } |
| |
| // Save environment variables to restore after test |
| saveHome := os.Getenv(homeEnv()) |
| savePath := os.Getenv("PPROF_BINARY_PATH") |
| |
| tempdir, err := ioutil.TempDir("", "home") |
| if err != nil { |
| t.Fatal("creating temp dir: ", err) |
| } |
| defer os.RemoveAll(tempdir) |
| os.MkdirAll(filepath.Join(tempdir, "pprof", "binaries", "abcde10001"), 0700) |
| os.Create(filepath.Join(tempdir, "pprof", "binaries", "abcde10001", "binary")) |
| |
| obj := testObj{tempdir} |
| os.Setenv(homeEnv(), tempdir) |
| for _, tc := range []struct { |
| env, file, buildID, want string |
| msgCount int |
| }{ |
| {"", "/usr/bin/binary", "", "/usr/bin/binary", 0}, |
| {"", "/usr/bin/binary", "fedcb10000", "/usr/bin/binary", 0}, |
| {"/usr", "/bin/binary", "", "/usr/bin/binary", 0}, |
| {"", "/prod/path/binary", "abcde10001", filepath.Join(tempdir, "pprof/binaries/abcde10001/binary"), 0}, |
| {"/alternate/architecture", "/usr/bin/binary", "", "/alternate/architecture/binary", 0}, |
| {"/alternate/architecture", "/usr/bin/binary", "abcde10001", "/alternate/architecture/binary", 0}, |
| {"/nowhere:/alternate/architecture", "/usr/bin/binary", "fedcb10000", "/usr/bin/binary", 1}, |
| {"/nowhere:/alternate/architecture", "/usr/bin/binary", "abcde10002", "/usr/bin/binary", 1}, |
| } { |
| os.Setenv("PPROF_BINARY_PATH", tc.env) |
| p := &profile.Profile{ |
| Mapping: []*profile.Mapping{ |
| { |
| File: tc.file, |
| BuildID: tc.buildID, |
| }, |
| }, |
| } |
| s := &source{} |
| locateBinaries(p, s, obj, &proftest.TestUI{T: t, Ignore: tc.msgCount}) |
| if file := p.Mapping[0].File; file != tc.want { |
| t.Errorf("%s:%s:%s, want %s, got %s", tc.env, tc.file, tc.buildID, tc.want, file) |
| } |
| } |
| os.Setenv(homeEnv(), saveHome) |
| os.Setenv("PPROF_BINARY_PATH", savePath) |
| } |
| |
| func TestCollectMappingSources(t *testing.T) { |
| const startAddress uint64 = 0x40000 |
| const url = "http://example.com" |
| for _, tc := range []struct { |
| file, buildID string |
| want plugin.MappingSources |
| }{ |
| {"/usr/bin/binary", "buildId", mappingSources("buildId", url, startAddress)}, |
| {"/usr/bin/binary", "", mappingSources("/usr/bin/binary", url, startAddress)}, |
| {"", "", mappingSources(url, url, startAddress)}, |
| } { |
| p := &profile.Profile{ |
| Mapping: []*profile.Mapping{ |
| { |
| File: tc.file, |
| BuildID: tc.buildID, |
| Start: startAddress, |
| }, |
| }, |
| } |
| got := collectMappingSources(p, url) |
| if !reflect.DeepEqual(got, tc.want) { |
| t.Errorf("%s:%s, want %v, got %v", tc.file, tc.buildID, tc.want, got) |
| } |
| } |
| } |
| |
| func TestUnsourceMappings(t *testing.T) { |
| for _, tc := range []struct { |
| file, buildID, want string |
| }{ |
| {"/usr/bin/binary", "buildId", "/usr/bin/binary"}, |
| {"http://example.com", "", ""}, |
| } { |
| p := &profile.Profile{ |
| Mapping: []*profile.Mapping{ |
| { |
| File: tc.file, |
| BuildID: tc.buildID, |
| }, |
| }, |
| } |
| unsourceMappings(p) |
| if got := p.Mapping[0].File; got != tc.want { |
| t.Errorf("%s:%s, want %s, got %s", tc.file, tc.buildID, tc.want, got) |
| } |
| } |
| } |
| |
| type testObj struct { |
| home string |
| } |
| |
| func (o testObj) Open(file string, start, limit, offset uint64) (plugin.ObjFile, error) { |
| switch file { |
| case "/alternate/architecture/binary": |
| return testFile{file, "abcde10001"}, nil |
| case "/usr/bin/binary": |
| return testFile{file, "fedcb10000"}, nil |
| case filepath.Join(o.home, "pprof/binaries/abcde10001/binary"): |
| return testFile{file, "abcde10001"}, nil |
| } |
| return nil, fmt.Errorf("not found: %s", file) |
| } |
| func (testObj) Demangler(_ string) func(names []string) (map[string]string, error) { |
| return func(names []string) (map[string]string, error) { return nil, nil } |
| } |
| func (testObj) Disasm(file string, start, end uint64) ([]plugin.Inst, error) { return nil, nil } |
| |
| type testFile struct{ name, buildID string } |
| |
| func (f testFile) Name() string { return f.name } |
| func (testFile) Base() uint64 { return 0 } |
| func (f testFile) BuildID() string { return f.buildID } |
| func (testFile) SourceLine(addr uint64) ([]plugin.Frame, error) { return nil, nil } |
| func (testFile) Symbols(r *regexp.Regexp, addr uint64) ([]*plugin.Sym, error) { return nil, nil } |
| func (testFile) Close() error { return nil } |
| |
| func TestFetch(t *testing.T) { |
| const path = "testdata/" |
| |
| // Intercept http.Get calls from HTTPFetcher. |
| httpGet = stubHTTPGet |
| |
| type testcase struct { |
| source, execName string |
| } |
| |
| for _, tc := range []testcase{ |
| {path + "go.crc32.cpu", ""}, |
| {path + "go.nomappings.crash", "/bin/gotest.exe"}, |
| {"http://localhost/profile?file=cppbench.cpu", ""}, |
| } { |
| p, _, _, err := grabProfile(&source{ExecName: tc.execName}, tc.source, 0, nil, testObj{}, &proftest.TestUI{T: t}) |
| if err != nil { |
| t.Fatalf("%s: %s", tc.source, err) |
| } |
| if len(p.Sample) == 0 { |
| t.Errorf("%s: want non-zero samples", tc.source) |
| } |
| if e := tc.execName; e != "" { |
| switch { |
| case len(p.Mapping) == 0 || p.Mapping[0] == nil: |
| t.Errorf("%s: want mapping[0].execName == %s, got no mappings", tc.source, e) |
| case p.Mapping[0].File != e: |
| t.Errorf("%s: want mapping[0].execName == %s, got %s", tc.source, e, p.Mapping[0].File) |
| } |
| } |
| } |
| } |
| |
| // mappingSources creates MappingSources map with a single item. |
| func mappingSources(key, source string, start uint64) plugin.MappingSources { |
| return plugin.MappingSources{ |
| key: []struct { |
| Source string |
| Start uint64 |
| }{ |
| {Source: source, Start: start}, |
| }, |
| } |
| } |
| |
| // stubHTTPGet intercepts a call to http.Get and rewrites it to use |
| // "file://" to get the profile directly from a file. |
| func stubHTTPGet(source string, _ time.Duration) (*http.Response, error) { |
| url, err := url.Parse(source) |
| if err != nil { |
| return nil, err |
| } |
| |
| values := url.Query() |
| file := values.Get("file") |
| |
| if file == "" { |
| return nil, fmt.Errorf("want .../file?profile, got %s", source) |
| } |
| |
| t := &http.Transport{} |
| t.RegisterProtocol("file", http.NewFileTransport(http.Dir("testdata/"))) |
| |
| c := &http.Client{Transport: t} |
| return c.Get("file:///" + file) |
| } |