mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-10-31 13:50:01 +00:00
326 lines
9.1 KiB
Go
326 lines
9.1 KiB
Go
/*
|
|
Copyright 2016 The Kubernetes Authors.
|
|
|
|
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 main
|
|
|
|
import (
|
|
"fmt"
|
|
"io/ioutil"
|
|
"math/rand"
|
|
"os"
|
|
"path"
|
|
"path/filepath"
|
|
"testing"
|
|
"time"
|
|
)
|
|
|
|
const (
|
|
// seed for rand.Source to generate data for files
|
|
seed int64 = 42
|
|
|
|
// 1K binary file
|
|
binLen = 1024
|
|
|
|
// Directory of the test package relative to $GOPATH
|
|
testImportDir = "example.com/proj/pkg"
|
|
)
|
|
|
|
var (
|
|
pastHour = time.Now().Add(-1 * time.Hour)
|
|
|
|
// The test package we are testing against
|
|
testPkg = path.Join(testImportDir, "test")
|
|
)
|
|
|
|
// fakegolist implements the `golist` interface providing fake package information for testing.
|
|
type fakegolist struct {
|
|
dir string
|
|
importMap map[string]pkg
|
|
testFiles []string
|
|
binfile string
|
|
}
|
|
|
|
func newFakegolist() (*fakegolist, error) {
|
|
dir, err := ioutil.TempDir("", "teststale")
|
|
if err != nil {
|
|
// test can't proceed without a temp directory.
|
|
return nil, fmt.Errorf("failed to create a temp directory for testing: %v", err)
|
|
}
|
|
|
|
// Set the temp directory as the $GOPATH
|
|
if err := os.Setenv("GOPATH", dir); err != nil {
|
|
// can't proceed without pointing the $GOPATH to the temp directory.
|
|
return nil, fmt.Errorf("failed to set \"$GOPATH\" pointing to %q: %v", dir, err)
|
|
}
|
|
|
|
// Setup $GOPATH directory layout.
|
|
// Yeah! I am bored of repeatedly writing "if err != nil {}"!
|
|
if os.MkdirAll(filepath.Join(dir, "bin"), 0750) != nil ||
|
|
os.MkdirAll(filepath.Join(dir, "pkg", "linux_amd64"), 0750) != nil ||
|
|
os.MkdirAll(filepath.Join(dir, "src"), 0750) != nil {
|
|
return nil, fmt.Errorf("failed to setup the $GOPATH directory structure")
|
|
}
|
|
|
|
// Create a temp file to represent the test binary.
|
|
binfile, err := ioutil.TempFile("", "testbin")
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to create the temp file to represent the test binary: %v", err)
|
|
}
|
|
|
|
// Could have used crypto/rand instead, but it doesn't matter.
|
|
rr := rand.New(rand.NewSource(42))
|
|
bin := make([]byte, binLen)
|
|
if _, err = rr.Read(bin); err != nil {
|
|
return nil, fmt.Errorf("couldn't read from the random source: %v", err)
|
|
}
|
|
if _, err := binfile.Write(bin); err != nil {
|
|
return nil, fmt.Errorf("couldn't write to the binary file %q: %v", binfile.Name(), err)
|
|
}
|
|
if err := binfile.Close(); err != nil {
|
|
// It is arguable whether this should be fatal.
|
|
return nil, fmt.Errorf("failed to close the binary file %q: %v", binfile.Name(), err)
|
|
}
|
|
|
|
if err := os.Chtimes(binfile.Name(), time.Now(), time.Now()); err != nil {
|
|
return nil, fmt.Errorf("failed to modify the mtime of the binary file %q: %v", binfile.Name(), err)
|
|
}
|
|
|
|
// Create test source files directory.
|
|
testdir := filepath.Join(dir, "src", testPkg)
|
|
if err := os.MkdirAll(testdir, 0750); err != nil {
|
|
return nil, fmt.Errorf("failed to create test source directory %q: %v", testdir, err)
|
|
}
|
|
|
|
fgl := &fakegolist{
|
|
dir: dir,
|
|
importMap: map[string]pkg{
|
|
"example.com/proj/pkg/test": {
|
|
Dir: path.Join(dir, "src", testPkg),
|
|
ImportPath: testPkg,
|
|
Target: path.Join(dir, "pkg", "linux_amd64", testImportDir, "test.a"),
|
|
Stale: false,
|
|
TestGoFiles: []string{
|
|
"foo_test.go",
|
|
"bar_test.go",
|
|
},
|
|
TestImports: []string{
|
|
"example.com/proj/pkg/p1",
|
|
"example.com/proj/pkg/p1/c11",
|
|
"example.com/proj/pkg/p2",
|
|
"example.com/proj/cmd/p3/c12/c23",
|
|
"strings",
|
|
"testing",
|
|
},
|
|
XTestGoFiles: []string{
|
|
"xfoo_test.go",
|
|
"xbar_test.go",
|
|
"xbaz_test.go",
|
|
},
|
|
XTestImports: []string{
|
|
"example.com/proj/pkg/test",
|
|
"example.com/proj/pkg/p1",
|
|
"example.com/proj/cmd/p3/c12/c23",
|
|
"os",
|
|
"testing",
|
|
},
|
|
},
|
|
"example.com/proj/pkg/p1": {Stale: false},
|
|
"example.com/proj/pkg/p1/c11": {Stale: false},
|
|
"example.com/proj/pkg/p2": {Stale: false},
|
|
"example.com/proj/cmd/p3/c12/c23": {Stale: false},
|
|
"strings": {Stale: false},
|
|
"testing": {Stale: false},
|
|
"os": {Stale: false},
|
|
},
|
|
testFiles: []string{
|
|
"foo_test.go",
|
|
"bar_test.go",
|
|
"xfoo_test.go",
|
|
"xbar_test.go",
|
|
"xbaz_test.go",
|
|
},
|
|
binfile: binfile.Name(),
|
|
}
|
|
|
|
// Create test source files.
|
|
for _, fn := range fgl.testFiles {
|
|
fp := filepath.Join(testdir, fn)
|
|
if _, err := os.Create(fp); err != nil {
|
|
return nil, fmt.Errorf("failed to create the test file %q: %v", fp, err)
|
|
}
|
|
if err := os.Chtimes(fp, time.Now(), pastHour); err != nil {
|
|
return nil, fmt.Errorf("failed to modify the mtime of the test file %q: %v", binfile.Name(), err)
|
|
}
|
|
}
|
|
|
|
return fgl, nil
|
|
}
|
|
|
|
func (fgl *fakegolist) pkgInfo(pkgPaths []string) ([]pkg, error) {
|
|
var pkgs []pkg
|
|
for _, path := range pkgPaths {
|
|
p, ok := fgl.importMap[path]
|
|
if !ok {
|
|
return nil, fmt.Errorf("package %q not found", path)
|
|
}
|
|
pkgs = append(pkgs, p)
|
|
}
|
|
return pkgs, nil
|
|
}
|
|
|
|
func (fgl *fakegolist) chMtime(filename string, mtime time.Time) error {
|
|
for _, fn := range fgl.testFiles {
|
|
if fn == filename {
|
|
fp := filepath.Join(fgl.dir, "src", testPkg, fn)
|
|
if err := os.Chtimes(fp, time.Now(), mtime); err != nil {
|
|
return fmt.Errorf("failed to modify the mtime of %q: %v", filename, err)
|
|
}
|
|
return nil
|
|
}
|
|
}
|
|
return fmt.Errorf("file %q not found", filename)
|
|
}
|
|
|
|
func (fgl *fakegolist) chStale(pkg string, stale bool) error {
|
|
if p, ok := fgl.importMap[pkg]; ok {
|
|
p.Stale = stale
|
|
fgl.importMap[pkg] = p
|
|
return nil
|
|
}
|
|
return fmt.Errorf("package %q not found", pkg)
|
|
}
|
|
|
|
func (fgl *fakegolist) cleanup() {
|
|
os.RemoveAll(fgl.dir)
|
|
os.Remove(fgl.binfile)
|
|
}
|
|
|
|
func TestIsTestStale(t *testing.T) {
|
|
cases := []struct {
|
|
fileMtime map[string]time.Time
|
|
pkgStaleness map[string]bool
|
|
result bool
|
|
}{
|
|
// Basic test: binary is fresh, all modifications were before the binary was built.
|
|
{
|
|
result: false,
|
|
},
|
|
// A local test file is new, hence binary must be stale.
|
|
{
|
|
fileMtime: map[string]time.Time{
|
|
"foo_test.go": time.Now().Add(1 * time.Hour),
|
|
},
|
|
result: true,
|
|
},
|
|
// Test package is new, so binary must be stale.
|
|
{
|
|
pkgStaleness: map[string]bool{
|
|
"example.com/proj/pkg/test": true,
|
|
},
|
|
result: true,
|
|
},
|
|
// Test package dependencies are new, so binary must be stale.
|
|
{
|
|
pkgStaleness: map[string]bool{
|
|
"example.com/proj/cmd/p3/c12/c23": true,
|
|
"strings": true,
|
|
},
|
|
result: true,
|
|
},
|
|
// External test files are new, hence binary must be stale.
|
|
{
|
|
fileMtime: map[string]time.Time{
|
|
"xfoo_test.go": time.Now().Add(1 * time.Hour),
|
|
"xbar_test.go": time.Now().Add(2 * time.Hour),
|
|
},
|
|
result: true,
|
|
},
|
|
// External test dependency is new, so binary must be stale.
|
|
{
|
|
pkgStaleness: map[string]bool{
|
|
"os": true,
|
|
},
|
|
result: true,
|
|
},
|
|
// Multiple source files and dependencies are new, so binary must be stale.
|
|
{
|
|
fileMtime: map[string]time.Time{
|
|
"foo_test.go": time.Now().Add(1 * time.Hour),
|
|
"xfoo_test.go": time.Now().Add(2 * time.Hour),
|
|
"xbar_test.go": time.Now().Add(3 * time.Hour),
|
|
},
|
|
pkgStaleness: map[string]bool{
|
|
"example.com/proj/pkg/p1": true,
|
|
"example.com/proj/pkg/p1/c11": true,
|
|
"example.com/proj/pkg/p2": true,
|
|
"example.com/proj/cmd/p3/c12/c23": true,
|
|
"strings": true,
|
|
"os": true,
|
|
},
|
|
result: true,
|
|
},
|
|
// Everything is new, so binary must be stale.
|
|
{
|
|
fileMtime: map[string]time.Time{
|
|
"foo_test.go": time.Now().Add(3 * time.Hour),
|
|
"bar_test.go": time.Now().Add(1 * time.Hour),
|
|
"xfoo_test.go": time.Now().Add(2 * time.Hour),
|
|
"xbar_test.go": time.Now().Add(1 * time.Hour),
|
|
"xbaz_test.go": time.Now().Add(2 * time.Hour),
|
|
},
|
|
pkgStaleness: map[string]bool{
|
|
"example.com/proj/pkg/p1": true,
|
|
"example.com/proj/pkg/p1/c11": true,
|
|
"example.com/proj/pkg/p2": true,
|
|
"example.com/proj/cmd/p3/c12/c23": true,
|
|
"example.com/proj/pkg/test": true,
|
|
"strings": true,
|
|
"testing": true,
|
|
"os": true,
|
|
},
|
|
result: true,
|
|
},
|
|
}
|
|
|
|
for _, tc := range cases {
|
|
fgl, err := newFakegolist()
|
|
if err != nil {
|
|
t.Fatalf("failed to setup the test: %v", err)
|
|
}
|
|
defer fgl.cleanup()
|
|
|
|
for fn, mtime := range tc.fileMtime {
|
|
if err := fgl.chMtime(fn, mtime); err != nil {
|
|
t.Fatalf("failed to change the mtime of %q: %v", fn, err)
|
|
}
|
|
}
|
|
|
|
for pkg, stale := range tc.pkgStaleness {
|
|
if err := fgl.chStale(pkg, stale); err != nil {
|
|
t.Fatalf("failed to change the staleness of %q: %v", pkg, err)
|
|
}
|
|
}
|
|
|
|
if tc.result != isTestStale(fgl, fgl.binfile, testPkg) {
|
|
if tc.result {
|
|
t.Errorf("Expected test package %q to be stale", testPkg)
|
|
} else {
|
|
t.Errorf("Expected test package %q to be not stale", testPkg)
|
|
}
|
|
}
|
|
}
|
|
}
|