nvm/test/slow/nvm copy-packages/should work as expected

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#!/bin/sh
die () { echo "$@" ; exit 1; }
. ../../../nvm.sh
nvm use 0.10.28
EXPECTED_PACKAGES="autoprefixer bower david eslint grunt-cli grunth-cli http-server jshint marked node-gyp recursive-blame uglify-js yo"
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echo "$EXPECTED_PACKAGES" | xargs npm install -g --quiet
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nvm use 0.10.29
ORIGINAL_PACKAGES=$(npm list -g --depth=0 | tail -n +2 | \grep -o -e ' [^@]*' | cut -c 2- | \grep -v npm | sort | uniq | xargs)
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nvm copy-packages 0.10.28
FINAL_PACKAGES=$(npm list -g --depth=0 | tail -n +2 | \grep -o -e ' [^@]*' | cut -c 2- | \grep -v npm | sort | uniq | xargs)
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[ "$FINAL_PACKAGES" = "$EXPECTED_PACKAGES" ] || die "final packages ($FINAL_PACKAGES) did not match expected packages ($EXPECTED_PACKAGES)"
[ "$ORIGINAL_PACKAGES" != "$FINAL_PACKAGES" ] || die "original packages matched final packages ($ORIGINAL_PACKAGES)"