[Tests] add `nvm version-remote` unit tests.

test/fast/Unit tests/nvm version-remote

@@ -0,0 +1,43 @@
+#!/bin/sh
+
+set -ex
+
+die () { echo $@ ; cleanup ; exit 1; }
+
+cleanup() {
+  unset -f nvm_remote_version
+}
+
+. ../../../nvm.sh
+
+. ../../common.sh
+
+nvm_remote_version() {
+  echo "NVM_VERSION_ONLY:${NVM_VERSION_ONLY-},NVM_LTS:${NVM_LTS-},PATTERN:${PATTERN-}"
+}
+
+OUTPUT="$(nvm version-remote foo)"
+EXPECTED_OUTPUT='NVM_VERSION_ONLY:true,NVM_LTS:,PATTERN:foo'
+[ "${OUTPUT}" = "${EXPECTED_OUTPUT}" ] || die "\`nvm version-remote foo\` called nvm_remote_version with >${OUTPUT}<, expected >${EXPECTED_OUTPUT}<"
+
+OUTPUT="$(nvm version-remote --lts foo)"
+EXPECTED_OUTPUT='NVM_VERSION_ONLY:true,NVM_LTS:*,PATTERN:foo'
+[ "${OUTPUT}" = "${EXPECTED_OUTPUT}" ] || die "\`nvm version-remote --lts foo\` called nvm_remote_version with >${OUTPUT}<, expected >${EXPECTED_OUTPUT}<"
+
+OUTPUT="$(nvm version-remote foo --lts)"
+EXPECTED_OUTPUT='NVM_VERSION_ONLY:true,NVM_LTS:*,PATTERN:foo'
+[ "${OUTPUT}" = "${EXPECTED_OUTPUT}" ] || die "\`nvm version-remote foo --lts\` called nvm_remote_version with >${OUTPUT}<, expected >${EXPECTED_OUTPUT}<"
+
+OUTPUT="$(nvm version-remote --lts=argon foo)"
+EXPECTED_OUTPUT='NVM_VERSION_ONLY:true,NVM_LTS:argon,PATTERN:foo'
+[ "${OUTPUT}" = "${EXPECTED_OUTPUT}" ] || die "\`nvm version-remote --lts=argon foo\` called nvm_remote_version with >${OUTPUT}<, expected >${EXPECTED_OUTPUT}<"
+
+set +ex # needed for stderr
+OUTPUT="$(nvm version-remote --foo bar 2>&1)"
+set -ex
+EXPECTED_OUTPUT='Unsupported option "--foo".'
+EXIT_CODE="$(nvm version-remote --foo bar >/dev/null 2>&1 && echo $? || echo $?)"
+[ "${EXIT_CODE}" = 55 ] || die "\`nvm version-remote --foo bar\` did not exit with code 55, got >${EXIT_CODE}<"
+[ "${OUTPUT}" = "${EXPECTED_OUTPUT}" ] || die "\`nvm version-remote --foo bar\` errored with >${OUTPUT}<, expected >${EXPECTED_OUTPUT}<"
+
+cleanup