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t.Error("Unexpected error from SizedWriter", err)
}
if buffer.String() != "1234567890" {
t.Error("Unexpected value in wrapped writer", buffer.String())
}
}
func TestSizeWriterLarger(t *testing.T) {
var (
input []byte = []byte("0123456789AB")
buffer bytes.Buffer
writer = SizedWriter(&buffer, 8)
)
count, err := writer.Write(input)
if count != 12 {
t.Error("Unexpected write count from SizedWriter", count)
}
if err != nil {
t.Error("Unexpected error from SizedWriter", err)
}
if buffer.String() != "01234567" {
t.Error("Unexpected value in wrapped writer", buffer.String())
}
count, err = writer.Write(nil)
if count != 0 {
t.Error("Unexpected write count from SizedWriter", count)
}
if err != nil {
t.Error("Unexpected error from SizedWriter", err)
}
if buffer.String() != "0123456789AB" {
t.Error("Unexpected value in wrapped writer", buffer.String())
}
}
func TestSizedWriterError(t *testing.T) {
func TestSizedWriterError1(t *testing.T) {
var (
errorWriter io.Writer = WriterFunc(func([]byte) (int, error) {
return 1, errors.New("Invalid write")
})
writer io.Writer = SizedWriter(errorWriter, 2)
)
count, err := writer.Write([]byte("1"))
if count != 1 {
t.Error("Unexpected write count from SizedWriter", count)
}
if err != nil {
t.Error("Unexpected error from SizedWriter", err)
}
count, err = writer.Write([]byte("2"))
if count != 1 {
t.Error("Unexpected write count from SizedWriter", count)
}
if err == nil {
t.Error("Unexpected lack of error from SizedWriter")
}
}
func TestSizedWriterError2(t *testing.T) {
var (
errorWriter io.Writer = WriterFunc(func([]byte) (int, error) {
return 1, errors.New("Invalid write")
})
writer io.Writer = SizedWriter(errorWriter, 1)
)
count, err := writer.Write([]byte("12"))
if count != 1 {
t.Error("Unexpected write count from SizedWriter", count)
}
if err == nil {
t.Error("Unexpected lack of error from SizedWriter")
}
}
|