Merge branch 'python-build-test'

.travis.yml

@@ -1,4 +1,8 @@
 install: git clone https://github.com/sstephenson/bats.git
 script: bats/bin/bats --tap test
-# skips unnecessary Python-specific setup
+after_script:
+  - bats/bin/bats --tap plugins/python-build/test
 language: c
+notifications:
+  email:
+    on_success: never

plugins/python-build/bin/python-build

@@ -913,28 +913,37 @@ use_homebrew_yaml() {
   fi
 }
 
-has_broken_mac_readline() {
-  if [ "$(uname -s)" = "Darwin" ] && ! use_homebrew_readline; then
-    # MacOSX 10.4 has a broken readline.
+configured_with_readline_dir() {
+  # Mac OS X 10.4 has broken readline.
   # https://github.com/yyuu/pyenv/issues/23
-    local retval=1
-    local conftest="$BUILD_PATH/has_broken_mac_readline.h"
-    echo "#include <readline/rlconf.h>" > "$conftest"
-    "${CPP:-cpp}" $CPPFLAGS "$conftest" 1>/dev/null 2>&1 || retval=0
-    rm -f "$conftest"
-    return "$retval"
-  else
-    return 1
+  local arg flag
+  for arg in ${CONFIGURE_OPTS} ${PYTHON_CONFIGURE_OPTS} "${PYTHON_CONFIGURE_OPTS_ARRAY[@]}"; do
+    if [[ "$arg" == "CPPFLAGS="* ]]; then
+      for flag in ${CPPFLAGS} ${arg##CPPFLAGS=}; do
+        if [[ "$flag" == "-I"* ]] && [ -e "${flag##-I}/readline/rlconf.h" ]; then
+          return 0
         fi
+      done
+    fi
+  done
+  return 1
+}
+
+has_broken_mac_readline() {
+  [ "$(uname -s)" = "Darwin" ] &&
+  ! configured_with_readline_dir &&
+  ! use_homebrew_readline
 }
 
 use_homebrew_readline() {
+  if ! configured_with_readline_dir; then
     local libdir="$(brew --prefix readline 2>/dev/null || true)"
     if [ -d "$libdir" ]; then
       package_option python configure CPPFLAGS="-I$libdir/include" LDFLAGS="-L$libdir/lib"
     else
       return 1
     fi
+  fi
 }
 
 has_broken_mac_openssl() {

plugins/python-build/test/build.bats

@@ -0,0 +1,299 @@
+#!/usr/bin/env bats
+
+load test_helper
+export PYTHON_BUILD_CACHE_PATH="$TMP/cache"
+export MAKE=make
+export MAKE_OPTS="-j 2"
+
+setup() {
+  mkdir -p "$INSTALL_ROOT"
+  stub md5 false
+  stub curl false
+}
+
+executable() {
+  local file="$1"
+  mkdir -p "${file%/*}"
+  cat > "$file"
+  chmod +x "$file"
+}
+
+cached_tarball() {
+  mkdir -p "$PYTHON_BUILD_CACHE_PATH"
+  pushd "$PYTHON_BUILD_CACHE_PATH" >/dev/null
+  tarball "$@"
+  popd >/dev/null
+}
+
+tarball() {
+  local name="$1"
+  local path="$PWD/$name"
+  local configure="$path/configure"
+  shift 1
+
+  executable "$configure" <<OUT
+#!$BASH
+echo "$name: \$@" \${PYTHONOPT:+PYTHONOPT=\$PYTHONOPT} >> build.log
+OUT
+
+  for file; do
+    mkdir -p "$(dirname "${path}/${file}")"
+    touch "${path}/${file}"
+  done
+
+  tar czf "${path}.tar.gz" -C "${path%/*}" "$name"
+}
+
+stub_make_install() {
+  stub "$MAKE" \
+    " : echo \"$MAKE \$@\" >> build.log" \
+    "install : cat build.log >> '$INSTALL_ROOT/build.log'"
+}
+
+assert_build_log() {
+  run cat "$INSTALL_ROOT/build.log"
+  assert_output
+}
+
+@test "yaml is installed for python" {
+  cached_tarball "yaml-0.1.4"
+  cached_tarball "Python-3.2.1"
+
+  stub brew false
+  stub_make_install
+  stub_make_install
+
+  install_fixture definitions/needs-yaml
+  assert_success
+
+  unstub make
+
+  assert_build_log <<OUT
+yaml-0.1.4: --prefix=$INSTALL_ROOT --libdir=$INSTALL_ROOT/lib
+make -j 2
+Python-3.2.1: --prefix=$INSTALL_ROOT --libdir=$INSTALL_ROOT/lib
+make -j 2
+OUT
+}
+
+@test "apply python patch before building" {
+  cached_tarball "yaml-0.1.4"
+  cached_tarball "Python-3.2.1"
+
+  stub brew false
+  stub_make_install
+  stub_make_install
+  stub patch ' : echo patch "$@" >> build.log'
+
+  install_fixture --patch definitions/needs-yaml
+  assert_success
+
+  unstub make
+  unstub patch
+
+  assert_build_log <<OUT
+yaml-0.1.4: --prefix=$INSTALL_ROOT --libdir=$INSTALL_ROOT/lib
+make -j 2
+patch -p0 -i -
+Python-3.2.1: --prefix=$INSTALL_ROOT --libdir=$INSTALL_ROOT/lib
+make -j 2
+OUT
+}
+
+@test "yaml is linked from Homebrew" {
+  cached_tarball "Python-3.2.1"
+
+  brew_libdir="$TMP/homebrew-yaml"
+  mkdir -p "$brew_libdir"
+
+  stub brew "--prefix libyaml : echo '$brew_libdir'" false
+  stub_make_install
+
+  install_fixture definitions/needs-yaml
+  assert_success
+
+  unstub brew
+  unstub make
+
+  assert_build_log <<OUT
+Python-3.2.1: --prefix=$INSTALL_ROOT --libdir=$INSTALL_ROOT/lib CPPFLAGS=-I$brew_libdir/include LDFLAGS=-L$brew_libdir/lib
+make -j 2
+OUT
+}
+
+@test "readline is linked from Homebrew" {
+  cached_tarball "Python-3.2.1"
+
+  readline_libdir="$TMP/homebrew-readline"
+  mkdir -p "$readline_libdir"
+
+  stub brew "--prefix readline : echo '$readline_libdir'"
+  stub_make_install
+
+  run_inline_definition <<DEF
+install_package "Python-3.2.1" "http://python.org/ftp/python/3.2.1/Python-3.2.1.tar.gz"
+DEF
+  assert_success
+
+  unstub brew
+  unstub make
+
+  assert_build_log <<OUT
+Python-3.2.1: --prefix=$INSTALL_ROOT --libdir=$INSTALL_ROOT/lib CPPFLAGS=-I$readline_libdir/include LDFLAGS=-L$readline_libdir/lib
+make -j 2
+OUT
+}
+
+@test "readline is not linked from Homebrew when explicitly defined" {
+  cached_tarball "Python-3.2.1"
+
+  readline_libdir="$TMP/custom"
+  mkdir -p "$readline_libdir/include/readline"
+  touch "$readline_libdir/include/readline/rlconf.h"
+
+  stub brew
+  stub_make_install
+
+  export PYTHON_CONFIGURE_OPTS="CPPFLAGS=-I$readline_libdir/include LDFLAGS=-L$readline_libdir/lib"
+  run_inline_definition <<DEF
+install_package "Python-3.2.1" "http://python.org/ftp/python/3.2.1/Python-3.2.1.tar.gz"
+DEF
+  assert_success
+
+  unstub brew
+  unstub make
+
+  assert_build_log <<OUT
+Python-3.2.1: --prefix=$INSTALL_ROOT --libdir=$INSTALL_ROOT/lib CPPFLAGS=-I$readline_libdir/include LDFLAGS=-L$readline_libdir/lib
+make -j 2
+OUT
+}
+
+@test "number of CPU cores defaults to 2" {
+  cached_tarball "Python-3.2.1"
+
+  stub uname '-s : echo Darwin'
+  stub sysctl false
+  stub_make_install
+
+  export -n MAKE_OPTS
+  run_inline_definition <<DEF
+install_package "Python-3.2.1" "http://python.org/ftp/python/3.2.1/Python-3.2.1.tar.gz"
+DEF
+  assert_success
+
+  unstub uname
+  unstub make
+
+  assert_build_log <<OUT
+Python-3.2.1: --prefix=$INSTALL_ROOT --libdir=$INSTALL_ROOT/lib
+make -j 2
+OUT
+}
+
+@test "number of CPU cores is detected on Mac" {
+  cached_tarball "Python-3.2.1"
+
+  stub uname '-s : echo Darwin'
+  stub sysctl '-n hw.ncpu : echo 4'
+  stub_make_install
+
+  export -n MAKE_OPTS
+  run_inline_definition <<DEF
+install_package "Python-3.2.1" "http://python.org/ftp/python/3.2.1/Python-3.2.1.tar.gz"
+DEF
+  assert_success
+
+  unstub uname
+  unstub sysctl
+  unstub make
+
+  assert_build_log <<OUT
+Python-3.2.1: --prefix=$INSTALL_ROOT --libdir=$INSTALL_ROOT/lib
+make -j 4
+OUT
+}
+
+@test "custom relative install destination" {
+  export PYTHON_BUILD_CACHE_PATH="$FIXTURE_ROOT"
+
+  cd "$TMP"
+  install_fixture definitions/without-checksum ./here
+  assert_success
+  assert [ -x ./here/bin/package ]
+}
+
+@test "make on FreeBSD defaults to gmake" {
+  cached_tarball "Python-3.2.1"
+
+  stub uname "-s : echo FreeBSD"
+  MAKE=gmake stub_make_install
+
+  MAKE= install_fixture definitions/vanilla-python
+  assert_success
+
+  unstub gmake
+  unstub uname
+}
+
+@test "can use PYTHON_CONFIGURE to apply a patch" {
+  cached_tarball "Python-3.2.1"
+
+  executable "${TMP}/custom-configure" <<CONF
+#!$BASH
+apply -p1 -i /my/patch.diff
+exec ./configure "\$@"
+CONF
+
+  stub apply 'echo apply "$@" >> build.log'
+  stub_make_install
+
+  export PYTHON_CONFIGURE="${TMP}/custom-configure"
+  run_inline_definition <<DEF
+install_package "Python-3.2.1" "http://python.org/ftp/python/3.2.1/Python-3.2.1.tar.gz"
+DEF
+  assert_success
+
+  unstub make
+  unstub apply
+
+  assert_build_log <<OUT
+apply -p1 -i /my/patch.diff
+Python-3.2.1: --prefix=$INSTALL_ROOT --libdir=$INSTALL_ROOT/lib
+make -j 2
+OUT
+}
+
+@test "copy strategy forces overwrite" {
+  export PYTHON_BUILD_CACHE_PATH="$FIXTURE_ROOT"
+
+  mkdir -p "$INSTALL_ROOT/bin"
+  touch "$INSTALL_ROOT/bin/package"
+  chmod -w "$INSTALL_ROOT/bin/package"
+
+  install_fixture definitions/without-checksum
+  assert_success
+
+  run "$INSTALL_ROOT/bin/package" "world"
+  assert_success "hello world"
+}
+
+@test "non-writable TMPDIR aborts build" {
+  export TMPDIR="${TMP}/build"
+  mkdir -p "$TMPDIR"
+  chmod -w "$TMPDIR"
+
+  touch "${TMP}/build-definition"
+  run python-build "${TMP}/build-definition" "$INSTALL_ROOT"
+  assert_failure "python-build: TMPDIR=$TMPDIR is set to a non-accessible location"
+}
+
+@test "non-executable TMPDIR aborts build" {
+  export TMPDIR="${TMP}/build"
+  mkdir -p "$TMPDIR"
+  chmod -x "$TMPDIR"
+
+  touch "${TMP}/build-definition"
+  run python-build "${TMP}/build-definition" "$INSTALL_ROOT"
+  assert_failure "python-build: TMPDIR=$TMPDIR is set to a non-accessible location"
+}

plugins/python-build/test/cache.bats

@@ -0,0 +1,90 @@
+#!/usr/bin/env bats
+
+load test_helper
+export PYTHON_BUILD_SKIP_MIRROR=1
+export PYTHON_BUILD_CACHE_PATH="$TMP/cache"
+
+setup() {
+  mkdir "$PYTHON_BUILD_CACHE_PATH"
+}
+
+
+@test "packages are saved to download cache" {
+  stub md5 true
+  stub curl "-C - -o * -*S* http://example.com/* : cp $FIXTURE_ROOT/\${6##*/} \$4"
+
+  install_fixture definitions/without-checksum
+  [ "$status" -eq 0 ]
+  [ -e "${PYTHON_BUILD_CACHE_PATH}/package-1.0.0.tar.gz" ]
+
+  unstub curl
+  unstub md5
+}
+
+
+@test "cached package without checksum" {
+  stub md5 true
+  stub curl
+
+  cp "${FIXTURE_ROOT}/package-1.0.0.tar.gz" "$PYTHON_BUILD_CACHE_PATH"
+
+  install_fixture definitions/without-checksum
+  [ "$status" -eq 0 ]
+  [ -e "${PYTHON_BUILD_CACHE_PATH}/package-1.0.0.tar.gz" ]
+
+  unstub curl
+  unstub md5
+}
+
+
+@test "cached package with valid checksum" {
+  stub md5 true "echo 83e6d7725e20166024a1eb74cde80677"
+  stub curl
+
+  cp "${FIXTURE_ROOT}/package-1.0.0.tar.gz" "$PYTHON_BUILD_CACHE_PATH"
+
+  install_fixture definitions/with-checksum
+  [ "$status" -eq 0 ]
+  [ -x "${INSTALL_ROOT}/bin/package" ]
+  [ -e "${PYTHON_BUILD_CACHE_PATH}/package-1.0.0.tar.gz" ]
+
+  unstub curl
+  unstub md5
+}
+
+
+@test "cached package with invalid checksum falls back to mirror and updates cache" {
+  export PYTHON_BUILD_SKIP_MIRROR=
+  local checksum="83e6d7725e20166024a1eb74cde80677"
+
+  stub md5 true "echo invalid" "echo $checksum"
+  stub curl "-*I* : true" \
+    "-C - -o * -*S* http://?*/$checksum : cp $FIXTURE_ROOT/package-1.0.0.tar.gz \$4"
+
+  touch "${PYTHON_BUILD_CACHE_PATH}/package-1.0.0.tar.gz"
+
+  install_fixture definitions/with-checksum
+  [ "$status" -eq 0 ]
+  [ -x "${INSTALL_ROOT}/bin/package" ]
+  [ -e "${PYTHON_BUILD_CACHE_PATH}/package-1.0.0.tar.gz" ]
+  diff -q "${PYTHON_BUILD_CACHE_PATH}/package-1.0.0.tar.gz" "${FIXTURE_ROOT}/package-1.0.0.tar.gz"
+
+  unstub curl
+  unstub md5
+}
+
+
+@test "nonexistent cache directory is ignored" {
+  stub md5 true
+  stub curl "-C - -o * -*S* http://example.com/* : cp $FIXTURE_ROOT/\${6##*/} \$4"
+
+  export PYTHON_BUILD_CACHE_PATH="${TMP}/nonexistent"
+
+  install_fixture definitions/without-checksum
+  [ "$status" -eq 0 ]
+  [ -x "${INSTALL_ROOT}/bin/package" ]
+  [ ! -d "$PYTHON_BUILD_CACHE_PATH" ]
+
+  unstub curl
+  unstub md5
+}

plugins/python-build/test/checksum.bats

@@ -0,0 +1,70 @@
+#!/usr/bin/env bats
+
+load test_helper
+export PYTHON_BUILD_SKIP_MIRROR=1
+export PYTHON_BUILD_CACHE_PATH=
+
+
+@test "package URL without checksum" {
+  stub md5 true
+  stub curl "-C - -o * -*S* http://example.com/* : cp $FIXTURE_ROOT/\${6##*/} \$4"
+
+  install_fixture definitions/without-checksum
+  [ "$status" -eq 0 ]
+  [ -x "${INSTALL_ROOT}/bin/package" ]
+
+  unstub curl
+  unstub md5
+}
+
+
+@test "package URL with valid checksum" {
+  stub md5 true "echo 83e6d7725e20166024a1eb74cde80677"
+  stub curl "-C - -o * -*S* http://example.com/* : cp $FIXTURE_ROOT/\${6##*/} \$4"
+
+  install_fixture definitions/with-checksum
+  [ "$status" -eq 0 ]
+  [ -x "${INSTALL_ROOT}/bin/package" ]
+
+  unstub curl
+  unstub md5
+}
+
+
+@test "package URL with invalid checksum" {
+  stub md5 true "echo 83e6d7725e20166024a1eb74cde80677"
+  stub curl "-C - -o * -*S* http://example.com/* : cp $FIXTURE_ROOT/\${6##*/} \$4"
+
+  install_fixture definitions/with-invalid-checksum
+  [ "$status" -eq 1 ]
+  [ ! -f "${INSTALL_ROOT}/bin/package" ]
+
+  unstub curl
+  unstub md5
+}
+
+
+@test "package URL with checksum but no MD5 support" {
+  stub md5 false
+  stub curl "-C - -o * -*S* http://example.com/* : cp $FIXTURE_ROOT/\${6##*/} \$4"
+
+  install_fixture definitions/with-checksum
+  [ "$status" -eq 0 ]
+  [ -x "${INSTALL_ROOT}/bin/package" ]
+
+  unstub curl
+  unstub md5
+}
+
+
+@test "package with invalid checksum" {
+  stub md5 true "echo invalid"
+  stub curl "-C - -o * -*S* http://example.com/* : cp $FIXTURE_ROOT/\${6##*/} \$4"
+
+  install_fixture definitions/with-checksum
+  [ "$status" -eq 1 ]
+  [ ! -f "${INSTALL_ROOT}/bin/package" ]
+
+  unstub curl
+  unstub md5
+}

plugins/python-build/test/fetch.bats

@@ -0,0 +1,14 @@
+#!/usr/bin/env bats
+
+load test_helper
+export PYTHON_BUILD_SKIP_MIRROR=1
+export PYTHON_BUILD_CACHE_PATH=
+
+@test "failed download displays error message" {
+  stub curl false
+
+  install_fixture definitions/without-checksum
+  assert_failure
+  assert_output_contains "> http://example.com/packages/package-1.0.0.tar.gz"
+  assert_output_contains "error: failed to download package-1.0.0.tar.gz"
+}

plugins/python-build/test/fixtures/definitions/needs-yaml

@@ -0,0 +1,2 @@
+install_package "yaml-0.1.4" "http://pyyaml.org/download/libyaml/yaml-0.1.4.tar.gz" --if needs_yaml
+install_package "Python-3.2.1" "http://python.org/ftp/python/3.2.1/Python-3.2.1.tar.gz"

plugins/python-build/test/fixtures/definitions/vanilla-python

@@ -0,0 +1 @@
+install_package "Python-3.2.1" "http://python.org/ftp/python/3.2.1/Python-3.2.1.tar.gz"

plugins/python-build/test/fixtures/definitions/with-checksum

@@ -0,0 +1 @@
+install_package "package-1.0.0" "http://example.com/packages/package-1.0.0.tar.gz#83e6d7725e20166024a1eb74cde80677" copy

plugins/python-build/test/fixtures/definitions/with-invalid-checksum

@@ -0,0 +1 @@
+install_package "package-1.0.0" "http://example.com/packages/package-1.0.0.tar.gz#invalid" copy

plugins/python-build/test/fixtures/definitions/without-checksum

@@ -0,0 +1 @@
+install_package "package-1.0.0" "http://example.com/packages/package-1.0.0.tar.gz" copy

plugins/python-build/test/hooks.bats

@@ -0,0 +1,56 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+setup() {
+  export PYENV_ROOT="${TMP}/pyenv"
+  export HOOK_PATH="${TMP}/i has hooks"
+  mkdir -p "$HOOK_PATH"
+}
+
+@test "pyenv-install hooks" {
+  cat > "${HOOK_PATH}/install.bash" <<OUT
+before_install 'echo before: \$PREFIX'
+after_install 'echo after: \$STATUS'
+OUT
+  stub pyenv-hooks "install : echo '$HOOK_PATH'/install.bash"
+  stub pyenv-rehash "echo rehashed"
+
+  definition="${TMP}/3.2.1"
+  cat > "$definition" <<<"echo python-build"
+  run pyenv-install "$definition"
+
+  assert_success
+  assert_output <<-OUT
+before: ${PYENV_ROOT}/versions/3.2.1
+python-build
+after: 0
+rehashed
+OUT
+}
+
+@test "pyenv-uninstall hooks" {
+  cat > "${HOOK_PATH}/uninstall.bash" <<OUT
+before_uninstall 'echo before: \$PREFIX'
+after_uninstall 'echo after.'
+rm() {
+  echo "rm \$@"
+  command rm "\$@"
+}
+OUT
+  stub pyenv-hooks "uninstall : echo '$HOOK_PATH'/uninstall.bash"
+  stub pyenv-rehash "echo rehashed"
+
+  mkdir -p "${PYENV_ROOT}/versions/3.2.1"
+  run pyenv-uninstall -f 3.2.1
+
+  assert_success
+  assert_output <<-OUT
+before: ${PYENV_ROOT}/versions/3.2.1
+rm -rf ${PYENV_ROOT}/versions/3.2.1
+rehashed
+after.
+OUT
+
+  assert [ ! -d "${PYENV_ROOT}/versions/3.2.1" ]
+}

plugins/python-build/test/installer.bats

@@ -0,0 +1,49 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+@test "installs python-build into PREFIX" {
+  cd "$TMP"
+  PREFIX="${PWD}/usr" run "${BATS_TEST_DIRNAME}/../install.sh"
+  assert_success ""
+
+  cd usr
+
+  assert [ -x bin/python-build ]
+  assert [ -x bin/pyenv-install ]
+  assert [ -x bin/pyenv-uninstall ]
+
+  assert [ -e share/python-build/2.7.2 ]
+  assert [ -e share/python-build/pypy-2.0 ]
+}
+
+@test "overwrites old installation" {
+  cd "$TMP"
+  mkdir -p bin share/python-build
+  touch bin/python-build
+  touch share/python-build/2.7.2
+
+  PREFIX="$PWD" run "${BATS_TEST_DIRNAME}/../install.sh"
+  assert_success ""
+
+  assert [ -x bin/python-build ]
+  run grep "install_package" share/python-build/2.7.2
+  assert_success
+}
+
+@test "unrelated files are untouched" {
+  cd "$TMP"
+  mkdir -p bin share/bananas
+  chmod g-w bin
+  touch bin/bananas
+  touch share/bananas/docs
+
+  PREFIX="$PWD" run "${BATS_TEST_DIRNAME}/../install.sh"
+  assert_success ""
+
+  assert [ -e bin/bananas ]
+  assert [ -e share/bananas/docs ]
+
+  run ls -ld bin
+  assert_equal "r-x" "${output:4:3}"
+}

plugins/python-build/test/mirror.bats

@@ -0,0 +1,103 @@
+#!/usr/bin/env bats
+
+load test_helper
+export PYTHON_BUILD_SKIP_MIRROR=
+export PYTHON_BUILD_CACHE_PATH=
+export PYTHON_BUILD_MIRROR_URL=http://mirror.example.com
+
+
+@test "package URL without checksum bypasses mirror" {
+  stub md5 true
+  stub curl "-C - -o * -*S* http://example.com/* : cp $FIXTURE_ROOT/\${6##*/} \$4"
+
+  install_fixture definitions/without-checksum
+  echo "$output" >&2
+  [ "$status" -eq 0 ]
+  [ -x "${INSTALL_ROOT}/bin/package" ]
+
+  unstub curl
+  unstub md5
+}
+
+
+@test "package URL with checksum but no MD5 support bypasses mirror" {
+  stub md5 false
+  stub curl "-C - -o * -*S* http://example.com/* : cp $FIXTURE_ROOT/\${6##*/} \$4"
+
+  install_fixture definitions/with-checksum
+  [ "$status" -eq 0 ]
+  [ -x "${INSTALL_ROOT}/bin/package" ]
+
+  unstub curl
+  unstub md5
+}
+
+
+@test "package URL with checksum hits mirror first" {
+  local checksum="83e6d7725e20166024a1eb74cde80677"
+  local mirror_url="${PYTHON_BUILD_MIRROR_URL}/$checksum"
+
+  stub md5 true "echo $checksum"
+  stub curl "-*I* $mirror_url : true" \
+    "-C - -o * -*S* $mirror_url : cp $FIXTURE_ROOT/package-1.0.0.tar.gz \$4"
+
+  install_fixture definitions/with-checksum
+  [ "$status" -eq 0 ]
+  [ -x "${INSTALL_ROOT}/bin/package" ]
+
+  unstub curl
+  unstub md5
+}
+
+
+@test "package is fetched from original URL if mirror download fails" {
+  local checksum="83e6d7725e20166024a1eb74cde80677"
+  local mirror_url="${PYTHON_BUILD_MIRROR_URL}/$checksum"
+
+  stub md5 true "echo $checksum"
+  stub curl "-*I* $mirror_url : false" \
+    "-C - -o * -*S* http://example.com/* : cp $FIXTURE_ROOT/\${6##*/} \$4"
+
+  install_fixture definitions/with-checksum
+  [ "$status" -eq 0 ]
+  [ -x "${INSTALL_ROOT}/bin/package" ]
+
+  unstub curl
+  unstub md5
+}
+
+
+@test "package is fetched from original URL if mirror download checksum is invalid" {
+  local checksum="83e6d7725e20166024a1eb74cde80677"
+  local mirror_url="${PYTHON_BUILD_MIRROR_URL}/$checksum"
+
+  stub md5 true "echo invalid" "echo $checksum"
+  stub curl "-*I* $mirror_url : true" \
+    "-C - -o * -*S* $mirror_url : cp $FIXTURE_ROOT/package-1.0.0.tar.gz \$4" \
+    "-C - -o * -*S* http://example.com/* : cp $FIXTURE_ROOT/\${6##*/} \$4"
+
+  install_fixture definitions/with-checksum
+  echo "$output" >&2
+  [ "$status" -eq 0 ]
+  [ -x "${INSTALL_ROOT}/bin/package" ]
+
+  unstub curl
+  unstub md5
+}
+
+
+@test "default mirror URL" {
+  export PYTHON_BUILD_MIRROR_URL=
+  local checksum="83e6d7725e20166024a1eb74cde80677"
+
+  stub md5 true "echo $checksum"
+  stub curl "-*I* : true" \
+    "-C - -o * -*S* http://?*/$checksum : cp $FIXTURE_ROOT/package-1.0.0.tar.gz \$4" \
+
+  install_fixture definitions/with-checksum
+  [ "$status" -eq 0 ]
+  [ -x "${INSTALL_ROOT}/bin/package" ]
+
+  unstub curl
+  unstub md5
+}

plugins/python-build/test/stubs/stub

@@ -0,0 +1,109 @@
+#!/usr/bin/env bash
+set -e
+
+status=0
+program="${0##*/}"
+PROGRAM="$(echo "$program" | tr a-z- A-Z_)"
+[ -n "$TMPDIR" ] || TMPDIR="/tmp"
+
+_STUB_PLAN="${PROGRAM}_STUB_PLAN"
+_STUB_RUN="${PROGRAM}_STUB_RUN"
+_STUB_INDEX="${PROGRAM}_STUB_INDEX"
+_STUB_RESULT="${PROGRAM}_STUB_RESULT"
+_STUB_END="${PROGRAM}_STUB_END"
+_STUB_DEBUG="${PROGRAM}_STUB_DEBUG"
+
+if [ -n "${!_STUB_DEBUG}" ]; then
+  echo "$program" "$@" >&${!_STUB_DEBUG}
+fi
+
+[ -e "${!_STUB_PLAN}" ] || exit 1
+[ -n "${!_STUB_RUN}" ] || eval "${_STUB_RUN}"="${TMPDIR}/${program}-stub-run"
+
+
+# Initialize or load the stub run information.
+eval "${_STUB_INDEX}"=1
+eval "${_STUB_RESULT}"=0
+[ ! -e "${!_STUB_RUN}" ] || source "${!_STUB_RUN}"
+
+
+# Loop over each line in the plan.
+index=0
+while IFS= read -r line; do
+  index=$(($index + 1))
+
+  if [ -z "${!_STUB_END}" ] && [ $index -eq "${!_STUB_INDEX}" ]; then
+    # We found the plan line we're interested in.
+    # Start off by assuming success.
+    result=0
+
+    # Split the line into an array of arguments to
+    # match and a command to run to produce output.
+    command=" $line"
+    if [ "$command" != "${command/ : }" ]; then
+      patterns="${command%% : *}"
+      command="${command#* : }"
+    fi
+
+    # Naively split patterns by whitespace for now.
+    # In the future, use a sed script to split while
+    # respecting quoting.
+    set -f
+    patterns=($patterns)
+    set +f
+    arguments=("$@")
+
+    # Match the expected argument patterns to actual
+    # arguments.
+    for (( i=0; i<${#patterns[@]}; i++ )); do
+      pattern="${patterns[$i]}"
+      argument="${arguments[$i]}"
+
+      case "$argument" in
+        $pattern ) ;;
+        * ) result=1 ;;
+      esac
+    done
+
+    # If the arguments matched, evaluate the command
+    # in a subshell. Otherwise, log the failure.
+    if [ $result -eq 0 ] ; then
+      set +e
+      ( eval "$command" )
+      status="$?"
+      set -e
+    else
+      eval "${_STUB_RESULT}"=1
+    fi
+  fi
+done < "${!_STUB_PLAN}"
+
+
+if [ -n "${!_STUB_END}" ]; then
+  # Clean up the run file.
+  rm -f "${!_STUB_RUN}"
+
+  # If the number of lines in the plan is larger than
+  # the requested index, we failed.
+  if [ $index -ge "${!_STUB_INDEX}" ]; then
+    eval "${_STUB_RESULT}"=1
+  fi
+
+  # Return the result.
+  exit "${!_STUB_RESULT}"
+
+else
+  # If the requested index is larger than the number
+  # of lines in the plan file, we failed.
+  if [ "${!_STUB_INDEX}" -gt $index ]; then
+    eval "${_STUB_RESULT}"=1
+  fi
+
+  # Write out the run information.
+  { echo "${_STUB_INDEX}=$((${!_STUB_INDEX} + 1))"
+    echo "${_STUB_RESULT}=${!_STUB_RESULT}"
+  } > "${!_STUB_RUN}"
+
+  exit "$status"
+
+fi

plugins/python-build/test/test_helper.bash

@@ -0,0 +1,123 @@
+export TMP="$BATS_TEST_DIRNAME/tmp"
+
+if [ "$FIXTURE_ROOT" != "$BATS_TEST_DIRNAME/fixtures" ]; then
+  export FIXTURE_ROOT="$BATS_TEST_DIRNAME/fixtures"
+  export INSTALL_ROOT="$TMP/install"
+  PATH=/usr/bin:/usr/sbin:/bin/:/sbin
+  PATH="$BATS_TEST_DIRNAME/../bin:$PATH"
+  PATH="$TMP/bin:$PATH"
+  export PATH
+fi
+
+teardown() {
+  rm -fr "$TMP"/*
+}
+
+stub() {
+  local program="$1"
+  local prefix="$(echo "$program" | tr a-z- A-Z_)"
+  shift
+
+  export "${prefix}_STUB_PLAN"="${TMP}/${program}-stub-plan"
+  export "${prefix}_STUB_RUN"="${TMP}/${program}-stub-run"
+  export "${prefix}_STUB_END"=
+
+  mkdir -p "${TMP}/bin"
+  ln -sf "${BATS_TEST_DIRNAME}/stubs/stub" "${TMP}/bin/${program}"
+
+  touch "${TMP}/${program}-stub-plan"
+  for arg in "$@"; do printf "%s\n" "$arg" >> "${TMP}/${program}-stub-plan"; done
+}
+
+unstub() {
+  local program="$1"
+  local prefix="$(echo "$program" | tr a-z- A-Z_)"
+  local path="${TMP}/bin/${program}"
+
+  export "${prefix}_STUB_END"=1
+
+  local STATUS=0
+  "$path" || STATUS="$?"
+
+  rm -f "$path"
+  rm -f "${TMP}/${program}-stub-plan" "${TMP}/${program}-stub-run"
+  return "$STATUS"
+}
+
+run_inline_definition() {
+  local definition="${TMP}/build-definition"
+  cat > "$definition"
+  run python-build "$definition" "${1:-$INSTALL_ROOT}"
+}
+
+install_fixture() {
+  local args
+
+  while [ "${1#-}" != "$1" ]; do
+    args="$args $1"
+    shift 1
+  done
+
+  local name="$1"
+  local destination="$2"
+  [ -n "$destination" ] || destination="$INSTALL_ROOT"
+
+  run python-build $args "$FIXTURE_ROOT/$name" "$destination"
+}
+
+assert() {
+  if ! "$@"; then
+    flunk "failed: $@"
+  fi
+}
+
+flunk() {
+  { if [ "$#" -eq 0 ]; then cat -
+    else echo "$@"
+    fi
+  } | sed "s:${TMP}:\${TMP}:g" >&2
+  return 1
+}
+
+assert_success() {
+  if [ "$status" -ne 0 ]; then
+    { echo "command failed with exit status $status"
+      echo "output: $output"
+    } | flunk
+  elif [ "$#" -gt 0 ]; then
+    assert_output "$1"
+  fi
+}
+
+assert_failure() {
+  if [ "$status" -eq 0 ]; then
+    flunk "expected failed exit status"
+  elif [ "$#" -gt 0 ]; then
+    assert_output "$1"
+  fi
+}
+
+assert_equal() {
+  if [ "$1" != "$2" ]; then
+    { echo "expected: $1"
+      echo "actual:   $2"
+    } | flunk
+  fi
+}
+
+assert_output() {
+  local expected
+  if [ $# -eq 0 ]; then expected="$(cat -)"
+  else expected="$1"
+  fi
+  assert_equal "$expected" "$output"
+}
+
+assert_output_contains() {
+  local expected="$1"
+  echo "$output" | grep -F "$expected" >/dev/null || {
+    { echo "expected output to contain $expected"
+      echo "actual: $output"
+    } | flunk
+  }
+}