diff options
Diffstat (limited to 'src/pkg/os/os_test.go')
| -rw-r--r-- | src/pkg/os/os_test.go | 34 |
1 files changed, 32 insertions, 2 deletions
diff --git a/src/pkg/os/os_test.go b/src/pkg/os/os_test.go index 551b86508..65475c118 100644 --- a/src/pkg/os/os_test.go +++ b/src/pkg/os/os_test.go @@ -567,8 +567,8 @@ func checkSize(t *testing.T, f *File, size int64) { } } -func TestTruncate(t *testing.T) { - f := newFile("TestTruncate", t) +func TestFTruncate(t *testing.T) { + f := newFile("TestFTruncate", t) defer Remove(f.Name()) defer f.Close() @@ -585,6 +585,24 @@ func TestTruncate(t *testing.T) { checkSize(t, f, 13+9) // wrote at offset past where hello, world was. } +func TestTruncate(t *testing.T) { + f := newFile("TestTruncate", t) + defer Remove(f.Name()) + defer f.Close() + + checkSize(t, f, 0) + f.Write([]byte("hello, world\n")) + checkSize(t, f, 13) + Truncate(f.Name(), 10) + checkSize(t, f, 10) + Truncate(f.Name(), 1024) + checkSize(t, f, 1024) + Truncate(f.Name(), 0) + checkSize(t, f, 0) + f.Write([]byte("surprise!")) + checkSize(t, f, 13+9) // wrote at offset past where hello, world was. +} + // Use TempDir() to make sure we're on a local file system, // so that timings are not distorted by latency and caching. // On NFS, timings can be off due to caching of meta-data on @@ -886,6 +904,18 @@ func TestAppend(t *testing.T) { if s != "new|append" { t.Fatalf("writeFile: have %q want %q", s, "new|append") } + s = writeFile(t, f, O_CREATE|O_APPEND|O_RDWR, "|append") + if s != "new|append|append" { + t.Fatalf("writeFile: have %q want %q", s, "new|append|append") + } + err := Remove(f) + if err != nil { + t.Fatalf("Remove: %v", err) + } + s = writeFile(t, f, O_CREATE|O_APPEND|O_RDWR, "new&append") + if s != "new&append" { + t.Fatalf("writeFile: have %q want %q", s, "new&append") + } } func TestStatDirWithTrailingSlash(t *testing.T) { |