test/fast/Running "nvm use x" should not create the "current" symlink if $NVM_SYMLINK_CURRENT is false

#!/bin/sh

set -ex

\. ../../nvm.sh

TEST_NODE_VERSION="v0.10.29"

TEST_COUNT=0
TEST_PASSED=0
TEST_FAILED=0

registerExpectedSymlink() {
  registerResult ${1}
}

registerExpectedNoSymlink() {
  [ $1 -ne 0 ]
  registerResult $?
}

registerResult() {
  result="${1}"

  TEST_COUNT=$(($TEST_COUNT + 1))

  [ ${result} -eq 0 ] \
    && TEST_PASSED=$(($TEST_PASSED + 1)) \
    || TEST_FAILED=$(($TEST_FAILED + 1))
}

cleanup() {
  rm -rf "${NVM_DIR}/${TEST_NODE_VERSION}"
  rm -f "${NVM_DIR}/current"
}

runNvmUse() {
  mkdir "${NVM_DIR}/${TEST_NODE_VERSION}"
  nvm use --delete-prefix "${TEST_NODE_VERSION}" > /dev/null 2>&1
  rmdir "${NVM_DIR}/${TEST_NODE_VERSION}"
}

isCurrentSymlinkPresent() {
  [ -L "${NVM_DIR}/current" ]
}

NVM_SYMLINK_CURRENT=false
cleanup
runNvmUse
isCurrentSymlinkPresent && echo >&2 "Expected 'current' symlink not to be created when NVM_SYMLINK_CURRENT=false!"
registerExpectedNoSymlink $?

NVM_SYMLINK_CURRENT=true
cleanup
runNvmUse
isCurrentSymlinkPresent || echo >&2 "Expected 'current' symlink to be created when NVM_SYMLINK_CURRENT=true!"
registerExpectedSymlink $?

NVM_SYMLINK_CURRENT=garbagevalue
cleanup
runNvmUse
isCurrentSymlinkPresent && echo >&2 "Expected 'current' symlink not to be created when NVM_SYMLINK_CURRENT contains a string!"
registerExpectedNoSymlink $?

NVM_SYMLINK_CURRENT=0
cleanup
runNvmUse
isCurrentSymlinkPresent && echo >&2 "Expected 'current' symlink not to be created when NVM_SYMLINK_CURRENT=0!"
registerExpectedNoSymlink $?

NVM_SYMLINK_CURRENT=1
cleanup
runNvmUse
isCurrentSymlinkPresent && echo >&2 "Expected 'current' symlink not to be created when NVM_SYMLINK_CURRENT=1!"
registerExpectedNoSymlink $?

unset NVM_SYMLINK_CURRENT
cleanup
runNvmUse
isCurrentSymlinkPresent && echo >&2 "Expected 'current' symlink not to be created when NVM_SYMLINK_CURRENT has been unset (default behaviour)!"
registerExpectedNoSymlink $?

cleanup

[ $TEST_FAILED -ne 0 ] && echo "${TEST_COUNT} tested, ${TEST_PASSED} passed, ${TEST_FAILED} failed" && exit 1 || true