Simplify fetching tarballs in build tests

#!/usr/bin/env bats

load test_helper

export RUBY_BUILD_CACHE_PATH="$TMP/cache"

setup() {

  mkdir -p "$INSTALL_ROOT"

  stub md5 false

  stub curl false

}

cached_tarball() {

  mkdir -p "$RUBY_BUILD_CACHE_PATH"

  pushd "$RUBY_BUILD_CACHE_PATH" >/dev/null

  tarball "$1"

  popd >/dev/null

}

tarball() {

  local name="$1"

  local path="$TMP/$name"

  local path="$PWD/$name"

  local configure="$path/configure"

  mkdir -p "$path"

OUT

  chmod +x "$configure"

  tar czf "${path}.tgz" -C "$TMP" "$name"

  echo "${path}.tgz"

  tar czf "${path}.tar.gz" -C "${path%/*}" "$name"

}

stub_download() {

  stub curl "-C - -o * -*S* $1 : cp '$(tarball "$2")' \$4"

stub_make_install() {

  stub make \

    ' : echo make "$@" >> build.log' \

    "install : cat build.log >> '$INSTALL_ROOT/build.log'"

}

assert_build_log() {

  run cat "$INSTALL_ROOT/build.log"

  assert_output

}

@test "yaml is installed for ruby" {

  mkdir -p "$INSTALL_ROOT/bin"

  cached_tarball "yaml-0.1.4"

  cached_tarball "ruby-2.0.0"

  stub md5 false

  stub brew false

  stub_download "http://pyyaml.org/*" "yaml-0.1.4"

  stub_download "http://ruby-lang.org/*" "ruby-2.0.0"

  stub make \

    ' : echo make "$@" >> build.log' \

    "install : cp build.log '$INSTALL_ROOT/yaml.log'" \

    ' : echo make "$@" >> build.log' \

    "install : cp build.log '$INSTALL_ROOT/ruby.log'"

  stub_make_install

  stub_make_install

  install_fixture definitions/needs-yaml

  assert_success

  unstub curl

  unstub make

  run cat "$INSTALL_ROOT/yaml.log"

  assert_output <<OUT

  assert_build_log <<OUT

yaml-0.1.4: --prefix=$INSTALL_ROOT

make -j 2

OUT

  run cat "$INSTALL_ROOT/ruby.log"

  assert_output <<OUT

ruby-2.0.0: --prefix=$INSTALL_ROOT

make -j 2

OUT

}

@test "yaml is linked from Homebrew" {

  cached_tarball "ruby-2.0.0"

  brew_libdir="$TMP/homebrew-yaml"

  mkdir -p "$INSTALL_ROOT/bin"

  mkdir -p "$brew_libdir"

  stub md5 false

  stub brew "--prefix libyaml : echo '$brew_libdir'"

  stub_download "http://ruby-lang.org/*" "ruby-2.0.0"

  stub make \

    ' : echo make "$@" >> build.log' \

    "install : cp build.log '$INSTALL_ROOT/ruby.log'"

  stub_make_install

  install_fixture definitions/needs-yaml

  assert_success

  unstub brew

  unstub curl

  unstub make

  run cat "$INSTALL_ROOT/ruby.log"

  assert_output <<OUT

  assert_build_log <<OUT

ruby-2.0.0: --prefix=$INSTALL_ROOT --with-libyaml-dir=$brew_libdir

make -j 2

OUT