github.com/sbinet/go@v0.0.0-20160827155028-54d7de7dd62b/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  	"time"
    11  )
    12  
    13  // Per golang.org/issue/14937, check that every .gz file
    14  // in the tree has a zero mtime.
    15  func TestGZIPFilesHaveZeroMTimes(t *testing.T) {
    16  	if testing.Short() && testenv.Builder() == "" {
    17  		t.Skip("skipping in short mode")
    18  	}
    19  	var files []string
    20  	err := filepath.Walk(runtime.GOROOT(), func(path string, info os.FileInfo, err error) error {
    21  		if err != nil {
    22  			return err
    23  		}
    24  		if !info.IsDir() && strings.HasSuffix(path, ".gz") {
    25  			files = append(files, path)
    26  		}
    27  		return nil
    28  	})
    29  	if err != nil {
    30  		if os.IsNotExist(err) {
    31  			t.Skipf("skipping: GOROOT directory not found: %s", runtime.GOROOT())
    32  		}
    33  		t.Fatal("error collecting list of .gz files in GOROOT: ", err)
    34  	}
    35  	if len(files) == 0 {
    36  		t.Fatal("expected to find some .gz files under GOROOT")
    37  	}
    38  	for _, path := range files {
    39  		checkZeroMTime(t, path)
    40  	}
    41  }
    42  
    43  func checkZeroMTime(t *testing.T, path string) {
    44  	f, err := os.Open(path)
    45  	if err != nil {
    46  		t.Error(err)
    47  		return
    48  	}
    49  	defer f.Close()
    50  	gz, err := NewReader(f)
    51  	if err != nil {
    52  		t.Errorf("cannot read gzip file %s: %s", path, err)
    53  		return
    54  	}
    55  	defer gz.Close()
    56  	if !gz.ModTime.Equal(time.Unix(0, 0)) {
    57  		t.Errorf("gzip file %s has non-zero mtime (%s)", path, gz.ModTime)
    58  	}
    59  }