Add tests for `rbenv install/uninstall` hooks

#!/usr/bin/env bats

load test_helper

setup() {

  export RBENV_ROOT="${TMP}/rbenv"

  export HOOK_PATH="${TMP}/i has hooks"

  mkdir -p "$HOOK_PATH"

}

@test "rbenv-install hooks" {

  cat > "${HOOK_PATH}/install.bash" <<OUT

before_install 'echo before: \$PREFIX'

after_install 'echo after: \$STATUS'

OUT

  stub rbenv-hooks "install : echo '$HOOK_PATH'/install.bash"

  stub rbenv-rehash "echo rehashed"

  definition="${TMP}/2.0.0"

  cat > "$definition" <<<"echo ruby-build"

  run rbenv-install "$definition"

  assert_success

  assert_output <<-OUT

before: ${RBENV_ROOT}/versions/2.0.0

ruby-build

after: 0

rehashed

OUT

}

@test "rbenv-uninstall hooks" {

  cat > "${HOOK_PATH}/uninstall.bash" <<OUT

before_uninstall 'echo before: \$PREFIX'

after_uninstall 'echo after.'

rm() {

  echo "rm \$@"

  command rm "\$@"

}

OUT

  stub rbenv-hooks "uninstall : echo '$HOOK_PATH'/uninstall.bash"

  stub rbenv-rehash "echo rehashed"

  mkdir -p "${RBENV_ROOT}/versions/2.0.0"

  run rbenv-uninstall -f 2.0.0

  assert_success

  assert_output <<-OUT

before: ${RBENV_ROOT}/versions/2.0.0

rm -rf ${RBENV_ROOT}/versions/2.0.0

rehashed

after.

OUT

  assert [ ! -d "${RBENV_ROOT}/versions/2.0.0" ]

}