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Use a better test for availability of bzip2

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The version of zip on Mac OS 10.6 is >= 3.0 but was not
compiled with bzip2 support.

This test tries to create an empty zip archive with bzip2 compression
and then checks the error message reported.
This commit is contained in:
Robert Knight 2011-09-05 16:14:26 +01:00
parent 364443be24
commit b8e1561155
1 changed files with 4 additions and 4 deletions
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8
src/tests/test-update.rb
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@ -35,10 +35,10 @@ def replace_vars(src_file,dest_file,vars)
end
def zip_supports_bzip2(zip_tool)
# 'zip -h' returns "Zip <Version>" on the second line
# This will break if the major version exceeds 9
zip_major_version = /Zip ([0-9\.]+)/.match(`#{zip_tool} -h`.lines.to_a[1])[1][0..0].to_i
return zip_major_version >= 3
# Try making an empty zip file with bzip2 compression, if bzip2 is not
# supported, the tool will output an error, otherwise it will output
# "Nothing to do"
return `#{zip_tool} -Z bzip2 testing-bzip2-support.zip`.strip.include?("Nothing to do")
end
BZIP2_AVAILABLE = zip_supports_bzip2(ZIP_TOOL)