github.com/panjjo/go@v0.0.0-20161104043856-d62b31386338/src/compress/gzip/issue14937_test.go (about)

     1  package gzip
     2  
     3  import (
     4  	"internal/testenv"
     5  	"os"
     6  	"path/filepath"
     7  	"runtime"
     8  	"strings"
     9  	"testing"
    10  )
    11  
    12  // Per golang.org/issue/14937, check that every .gz file
    13  // in the tree has a zero mtime.
    14  func TestGZIPFilesHaveZeroMTimes(t *testing.T) {
    15  	if testing.Short() && testenv.Builder() == "" {
    16  		t.Skip("skipping in short mode")
    17  	}
    18  	goroot, err := filepath.EvalSymlinks(runtime.GOROOT())
    19  	if err != nil {
    20  		t.Fatal("error evaluating GOROOT: ", err)
    21  	}
    22  	var files []string
    23  	err = filepath.Walk(goroot, func(path string, info os.FileInfo, err error) error {
    24  		if err != nil {
    25  			return err
    26  		}
    27  		if !info.IsDir() && strings.HasSuffix(path, ".gz") {
    28  			files = append(files, path)
    29  		}
    30  		return nil
    31  	})
    32  	if err != nil {
    33  		if os.IsNotExist(err) {
    34  			t.Skipf("skipping: GOROOT directory not found: %s", runtime.GOROOT())
    35  		}
    36  		t.Fatal("error collecting list of .gz files in GOROOT: ", err)
    37  	}
    38  	if len(files) == 0 {
    39  		t.Fatal("expected to find some .gz files under GOROOT")
    40  	}
    41  	for _, path := range files {
    42  		checkZeroMTime(t, path)
    43  	}
    44  }
    45  
    46  func checkZeroMTime(t *testing.T, path string) {
    47  	f, err := os.Open(path)
    48  	if err != nil {
    49  		t.Error(err)
    50  		return
    51  	}
    52  	defer f.Close()
    53  	gz, err := NewReader(f)
    54  	if err != nil {
    55  		t.Errorf("cannot read gzip file %s: %s", path, err)
    56  		return
    57  	}
    58  	defer gz.Close()
    59  	if !gz.ModTime.IsZero() {
    60  		t.Errorf("gzip file %s has non-zero mtime (%s)", path, gz.ModTime)
    61  	}
    62  }