nvm/test/fast/Unit tests/nvm_compute_checksum

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#!/bin/sh
set -ex
die () { echo $@ ; exit 1; }
. ../../../nvm.sh
set +x
OUTPUT="$(nvm_compute_checksum 2>&1 >/dev/null || echo)"
EXIT_CODE="$(nvm_compute_checksum >/dev/null 2>&1 || echo $?)"
set -x
EXPECTED_OUTPUT='Provided file to checksum is empty.'
[ "${OUTPUT}" = "${EXPECTED_OUTPUT}" ] || die "expected >${EXPECTED_OUTPUT}<, got >${OUTPUT}<"
[ "${EXIT_CODE}" = 2 ] || die "expected to exit with code 2, got ${EXIT_CODE}"
set +x
OUTPUT="$(nvm_compute_checksum foo 2>&1 >/dev/null || echo)"
EXIT_CODE="$(nvm_compute_checksum foo >/dev/null 2>&1 || echo $?)"
set -x
EXPECTED_OUTPUT='Provided file to checksum does not exist.'
[ "${OUTPUT}" = "${EXPECTED_OUTPUT}" ] || die "expected >${EXPECTED_OUTPUT}<, got >${OUTPUT}<"
[ "${EXIT_CODE}" = 1 ] || die "expected to exit with code 1, got ${EXIT_CODE}"