Add rbenv-install tests

#!/usr/bin/env bats

load test_helper

export RBENV_ROOT="${TMP}/rbenv"

setup() {

  stub rbenv-hooks 'install : true'

  stub rbenv-rehash 'true'

}

stub_ruby_build() {

  stub ruby-build "--lib : $BATS_TEST_DIRNAME/../bin/ruby-build --lib" "$@"

}

@test "install proper" {

  stub_ruby_build 'echo ruby-build "$@"'

  run rbenv-install 2.1.2

  assert_success "ruby-build 2.1.2 ${RBENV_ROOT}/versions/2.1.2"

  unstub ruby-build

  unstub rbenv-hooks

  unstub rbenv-rehash

}

@test "install rbenv local version by default" {

  stub_ruby_build 'echo ruby-build "$1"'

  stub rbenv-local 'echo 2.1.2'

  run rbenv-install

  assert_success "ruby-build 2.1.2"

  unstub ruby-build

  unstub rbenv-local

}

@test "list available versions" {

  stub_ruby_build \

    "--definitions : echo 1.8.7 1.9.3-p0 1.9.3-p194 2.1.2 | tr ' ' $'\\n'"

  run rbenv-install --list

  assert_success

  assert_output <<OUT

Available versions:

  1.8.7

  1.9.3-p0

  1.9.3-p194

  2.1.2

OUT

  unstub ruby-build

}

@test "nonexistent version" {

  stub_ruby_build 'echo ERROR >&2 && exit 2' \

    "--definitions : echo 1.8.7 1.9.3-p0 1.9.3-p194 2.1.2 | tr ' ' $'\\n'"

  run rbenv-install 1.9.3

  assert_failure

  assert_output <<OUT

ERROR

The following versions contain \`1.9.3' in the name:

  1.9.3-p0

  1.9.3-p194

You can list all available versions with \`rbenv install --list'.

If the version you're looking for is not present, first try upgrading

ruby-build. If it's still missing, open a request on the ruby-build

issue tracker: https://github.com/sstephenson/ruby-build/issues

OUT

  unstub ruby-build

}