How do I mock writing to a gzip file?

Asked Dec 24 '17 at 02:05

Active Dec 24 '17 at 03:47

Viewed 947 times

I can write a normal gzip file:

var b bytes.Buffer
w := gzip.NewWriter(&b)
w.Write([]byte("hello, world\n"))
w.Close()

But I cannot figure out how to mock a gzip file so that I can read that mocked file for my tests:

afero.WriteFile(mfs, "/path/to/file.gz", []byte("here is file"), 0644)

If I try to read this mock gzip file the error I get is:

gzip: invalid header

edited Dec 24 '17 at 03:47

asked Dec 24 '17 at 02:05

user_78361084

Do you want to write `b` to the file like `afero.WriteFile(mfs, "/path/to/file.gz", b.Bytes(), 0644)`? I don't understand the question, but that's one way the code in the question can fit together. – Charlie Tumahai Dec 24 '17 at 03:12
Are you trying to write or read a gzip file? Your question mentions both. – Jonathan Hall Dec 24 '17 at 10:06
Need to write to a gzip file so that my function I am testing can read from that mocked file. – user_78361084 Dec 24 '17 at 16:42
"write a file of gzipped content" https://stackoverflow.com/a/32017845/4466350 – Dec 25 '17 at 13:58
What do you mean by mock? Isn't `b` in your first code snippet a mock? – Arman Ordookhani Dec 27 '17 at 09:36

0 Answers0