test AutoFile#Size (happy path)
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13badc1d29
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@ -84,3 +84,40 @@ func TestOpenAutoFilePerms(t *testing.T) {
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t.Errorf("unexpected error %v", e)
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}
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}
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func TestAutoFileSize(t *testing.T) {
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// First, create an AutoFile writing to a tempfile dir
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f, err := ioutil.TempFile("", "sighup_test")
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require.NoError(t, err)
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err = f.Close()
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require.NoError(t, err)
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// Here is the actual AutoFile.
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af, err := OpenAutoFile(f.Name())
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require.NoError(t, err)
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// 1. Empty file
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size, err := af.Size()
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require.Zero(t, size)
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require.NoError(t, err)
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// 2. Not empty file
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data := []byte("Maniac\n")
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_, err = af.Write(data)
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require.NoError(t, err)
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size, err = af.Size()
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require.EqualValues(t, len(data), size)
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require.NoError(t, err)
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// 3. Not existing file
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err = af.Close()
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require.NoError(t, err)
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err = os.Remove(f.Name())
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require.NoError(t, err)
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size, err = af.Size()
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require.EqualValues(t, 0, size, "Expected a new file to be empty")
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require.NoError(t, err)
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// Cleanup
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_ = os.Remove(f.Name())
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}
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